WO2023006048A1 - Integrated throttle valve assembly, engine module, and vehicle - Google Patents

Abstract

An integrated throttle valve assembly, comprising: a throttle valve (900) comprising a main valve body in which an airflow passage is formed, and a throttle valve plate rotatably provided in the main valve body, the throttle valve plate dividing the main valve body into an air inlet portion and an air outlet portion; and a sub-valve assembly (200) comprising a valve cover capable of being in linkage with the throttle valve plate to control the opening of an airflow passage of the sub-valve assembly. The integrated throttle valve assembly can reduce costs, simplify the structure, and improve reliability. Also disclosed are an engine module and a vehicle.

Description

Integrated throttle assembly and engine module and vehicle technical field

The present disclosure relates to an integrated throttle assembly and an engine module, in particular, to an integrated throttle assembly integrated with a sub-valve assembly, an engine module and a vehicle having the integrated throttle assembly.

Background technique

Generally, ignition-type engines (eg, ignition-type gasoline engines and ignition-type natural gas engines) use a throttle valve to control the amount of intake air to the engine, thereby controlling engine load.

FIG. 1 is a schematic diagram showing a conventional engine throttle valve and an intake pipeline. As shown in FIG. 1 , intake air of the engine enters from an air filter 100 and is connected to a compressor 102 of a turbocharger through a pipeline 101 . The pressure of the compressed air increases, and at the same time, the density and temperature increase, and then the compressed air enters the intercooler 104 through the pipeline for proper cooling, thereby further increasing the intake air density. Intercooler 104 is connected to throttle valve 107 through line 105 . The throttle valve 107 changes the flow resistance of the intake air by controlling the degree of opening and closing, thereby controlling the intake air pressure. Next, the air is connected to the intake manifold of the engine 110 through the pipeline 108, and enters the engine 110 to burn and perform work. The combusted exhaust gas is collected through the exhaust manifold 111 , enters the turbine 116 of the turbocharger to do work, and drives the compressor 102 . In addition, the waste gas release valve 115 of the turbocharger is connected in parallel with the turbine 116. When the engine exhausts too much, the waste gas release valve 115 is opened to release part of the exhaust gas and avoid the overspeed of the turbocharger. Thereafter, the exhaust gas is purified by the exhaust aftertreatment system 117 and finally exits the system through the muffler 118 .

In Fig. 1, the Exhaust Gas Recirculation (EGR) system is also included, and the Exhaust Gas Recirculation (EGR) system is the part that connects the exhaust gas and intake air of the engine. It should be noted that there is a turbocharger in Figure 1. If there is no turbocharger, the EGR system can also be connected and used in the same way. Here, before the exhaust gas flows into the turbine 116, it flows into the EGR cooler 113 (which can cool the recirculated exhaust gas to avoid unnecessary combustion abnormality caused by excessively high intake air temperature) through the pipeline 112, and then passes through the EGR valve 114 The flow of exhaust gas in the EGR system is controlled and then directed to the throttle valve 107 to mix with the intake air. EGR systems reduce NOx formation by reintroducing exhaust gas back into the intake system, thereby reducing peak temperatures during combustion. In addition, it can also increase the working fluid participating in the combustion, thereby improving fuel consumption.

In FIG. 1 , a recirculation valve (RCV) 106 is also included, and the recirculation valve 106 is usually provided in a turbocharged gasoline engine (sometimes, a supercharged natural gas engine is also used). When the engine is working at high speed and high load, the turbocharger rotates at high speed and provides supercharging pressure through the compressor 102 . At this time, if the engine output is suddenly reduced (such as emergency braking), the throttle valve 107 will be closed immediately, but the turbocharger speed will not be reduced immediately, and the compressor 102 is still compressing air at a high speed, causing the outlet of the compressor 102 to reach the throttle. The air pressure between the air valves 107 rises rapidly, and in severe cases, the impeller of the air compressor 102 will be deformed and fractured. At this time, recirculation can be set in the pipeline between the post-pressure (between the outlet of the compressor 102 and the throttle valve 107) and the pre-pressure (between the filter 100 and the inlet of the compressor 102) valve 106, and release the high-pressure air through the recirculation valve 106 to avoid failure of related components or functions.

With the implementation of more and more stringent emission regulations, the aftertreatment requirements of compression ignition engines are getting higher and higher, and the catalytic converters used in aftertreatment generally require a minimum operating temperature to ensure the basic catalytic conversion efficiency. In order to maintain high exhaust gas temperature, most of the current compression ignition engines have been equipped with a throttle valve. In this way, when the engine is working at a small load, the intake air can be reduced by properly closing the throttle, thereby increasing the exhaust temperature.

Contents of the invention

According to some embodiments of the present disclosure, there is provided an integrated throttle assembly, including: a throttle, the throttle includes a main valve body formed with a main air flow passage and a throttle valve plate rotatably arranged in the main valve body , the throttle valve plate divides the main valve body into an air inlet part and an air outlet part; a sub-valve assembly is formed with a sub-air flow channel, and the sub-valve assembly includes a valve cover, and the valve cover can be connected with the throttle The gate valve slices are linked to control the opening degree of the sub-airflow channels of the sub-valve assembly.

The sub-valve assembly includes a sub-valve body, on which is formed a controlled opening for communicating the sub-air flow channel in the sub-valve body with the outside, when the valve cover moves relative to the sub-valve body, The controlled opening can be opened or closed.

The sub-valve assembly also includes a return member for exerting a force to make the bonnet close the controlled opening of the sub-valve body, the return member is connected between the bonnet and the sub-valve body between, or connected between the bonnet and the main valve body.

According to some embodiments of the present disclosure, an engine module is provided, including an engine and the above-mentioned integrated throttle assembly, wherein the exhaust pipe of the engine is connected with the sub-valve assembly so that a part of the engine exhausts According to some embodiments of the present disclosure, an engine module is provided, including: an engine, a turbocharger, and the integrated throttle assembly, the sub-valve body is connected to the air inlet portion of the throttle and the intake port of the turbocharger.

According to some embodiments of the present disclosure, there is provided an engine module, including: an engine, a turbocharger, and the integrated throttle assembly, the exhaust pipe of the engine is connected to the first sub-valve assembly, so that A part of the exhaust gas of the engine can enter the air outlet portion of the main valve body through the first sub-valve assembly; the second sub-valve assembly is connected between the air inlet portion of the throttle and the turbocharger between the intake ports of the device.

According to some embodiments of the present disclosure, there is provided a vehicle including the aforementioned integrated throttle assembly.

Description of drawings

Those of ordinary skill in the art will better understand the presently disclosed concept from the following description with reference to the following drawings, wherein, unless otherwise indicated, like reference numerals refer to like parts throughout the various drawings, wherein:

Fig. 1 is the schematic diagram of existing engine throttle valve and intake pipeline;

2A-2E are schematic diagrams illustrating Example 1 of an integrated throttle assembly according to some embodiments of the present disclosure;

3A-3D are schematic diagrams illustrating Example 2 of an integrated throttle assembly according to some embodiments of the present disclosure;

4A-4C are schematic illustrations of Example 3 illustrating an integrated throttle assembly according to some embodiments of the present disclosure;

5A-5C are schematic diagrams illustrating a cooling assembly for an integrated throttle assembly according to some embodiments of the present disclosure;

5D-5F are schematic diagrams illustrating another example of a cooling assembly for an integrated throttle assembly according to one or more embodiments of the present disclosure;

6A and 6B are schematic diagrams illustrating Example 4 of an integrated throttle assembly according to some embodiments of the present disclosure;

6C is a schematic diagram illustrating Example 5 of an integrated throttle assembly according to some embodiments of the present disclosure;

7A-7E are schematic diagrams illustrating Example 6 of an integrated throttle assembly according to some embodiments of the present disclosure;

8A-8C are schematic diagrams illustrating Example 7 of an integrated throttle assembly according to some embodiments of the present disclosure;

9A-9C are example 8 schematic diagrams illustrating an integrated throttle assembly according to some embodiments of the present disclosure.

Detailed ways

In the control structure shown in FIG. 1 , the EGR valve 114 and the RCV valve 106 usually have their own independent control channels, and the engine control unit needs to set up separate lines and control the EGR valve 114 and the RCV valve 106 respectively through separate control signals. . This means that the EGR valve and the RCV valve need to be equipped with devices for converting electrical signals into mechanical motions and related mechanical actuators, which may result in complex structures and control circuits or control methods.

Embodiments of the present disclosure provide an integrated throttle assembly to simplify engine throttle control.

An integrated throttle assembly according to the present disclosure may include a throttle (also referred to as a main valve assembly) and a sub-valve assembly connected to the throttle. The throttle may include a main valve body (also referred to as a throttle body) and a throttle plate for partitioning the interior of the main valve body into an air inlet portion and an air outlet portion. The sub-valve assembly may include a sub-valve body and a valve cover disposed on the sub-valve body. The sub-valve body is connected with the main valve body, and the sub-airflow channel of the sub-valve assembly communicates with the main airflow channel of the throttle, and the valve cover can be actuated by the throttle valve plate to move relative to the sub-valve body, thereby controlling the flow of the sub-valve assembly. The opening degree of the sub-airflow channel controls the flow of air flowing between the sub-valve assembly and the main valve assembly.

According to some embodiments of the present disclosure, an opening or a through hole may be formed on a side wall of the main valve body forming the air inlet portion to allow the air inlet portion to communicate with the sub-airflow channel of the sub-valve assembly through the opening or through hole. According to some embodiments of the present disclosure, an opening or a through hole may be formed on a side wall of the main valve body forming the air outlet portion, so that the sub-airflow channel of the sub-valve assembly communicates with the air outlet portion through the opening or through hole.

Below, several examples of the integrated throttle assembly of some embodiments of the present disclosure will be described with reference to the accompanying drawings.

Example1: Throttle integrated EGR valve

Example 1 of the integrated throttle assembly will be described in detail below with reference to FIGS. 2A to 2E .

In Example 1, the integrated throttle assembly may include a throttle valve 900 (ie, a main valve assembly) and an EGR valve 200 integrated into the throttle valve 900 (ie, a sub-valve assembly), and in FIGS. 2A and 2E , Some components of the throttle valve 900 are transparentized or omitted in order to show the detailed structure of the components disposed in the throttle valve 900 .

Throttle valve 900 (main valve assembly)

Referring to FIG. 2A, the throttle valve 900A may include a main valve body 901A, a throttle valve plate 930A disposed inside the main valve body 901A, and a throttle valve plate rotating shaft 940A. The throttle valve plate 930A is rotatably mounted on the main valve through the throttle valve plate rotating shaft 940A. Inside body 901A. The throttle valve plate 930A divides the interior of the throttle valve 900A into an air inlet portion 910A and an air outlet portion 920A, and the throttle valve plate rotating shaft 940A can be driven to rotate by a throttle driver (for example, a drive motor, etc.), so that it is connected to the throttle valve plate rotating shaft 940A The throttle valve plate 930A rotates to adjust the opening of the throttle valve 900A, thereby adjusting the amount of air entering the air outlet portion 920A from the air inlet portion 910A. As an example, the main valve body 901A may be generally cylindrical, the throttle valve plate 930A may be circular, and the throttle valve plate rotating shaft 940A may be arranged along one diameter of the circle. For another example, the main valve body 901A can be an elliptical cylinder, the throttle valve plate 930A can be in the shape of a corresponding elliptical plate, and the throttle valve plate rotating shaft 940A can be arranged along the major axis or the minor axis of the ellipse.

When the engine has an air intake demand, the throttle driver can rotate the throttle valve plate rotating shaft 940A at a certain angle according to the air intake demand to open the throttle valve plate 930A. At this time, the throttle valve plate 930A is no longer tightly connected to the inner wall of the throttle valve 900A contact, but has a certain gap (ie, opening angle) with the inner wall of the throttle valve 900A, so that the air introduced into the air inlet portion 910A of the throttle valve 900A can enter the air outlet portion 920A through the opening angle of the throttle valve plate 930A, and It ends up in the intake manifold of the engine (as described earlier). When there are different intake requirements, the throttle valve plate 930A may have different opening angles.

EGR valve 200 (sub-valve assembly)

2A to 2C, the EGR valve 200 may include a sub-valve body 210 and a valve cover 220, the sub-valve body 210 is provided with a sub-airflow passage, the valve cover 220 is connected to the sub-valve body 210, and can cover the sub-valve body 210. The opening of the sub-air flow channel, and can move between the valve fully open position and the valve fully closed position relative to the sub-valve body 210 to adjust the coverage area of the valve cover 220 at the sub-air flow channel opening of the sub-valve body 210, thereby The opening degree of the airflow channel of the sub-valve body 210 is controlled.

The sub-valve body 210 can be fixed to the throttle valve 900A or other components (for example, the exhaust pipe 112 or the extension pipe 560 described below) as a fixing part, and the valve cover 220 can be linked with the throttle valve plate 930A to control air flow based on the throttle valve. The opening of the gate valve plate 930A moves relative to the sub-valve body 210, thereby changing the opening of the EGR valve 200, thereby adjusting the amount of exhaust gas discharged from, for example, the engine exhaust manifold to be reintroduced into the engine intake manifold. flow.

The EGR valve 200 further includes a return member 230 connected between the sub-valve body 210 and the valve cover 220 so that the valve cover 220 can maintain the valve fully closed position relative to the sub-valve body 210 . When the valve cover 220 is linked with the throttle valve plate 930A to gradually move from the valve fully closed position to the valve fully open position, it is necessary to overcome the restoring force of the return member 230, and when the throttle valve plate 930 acts on the valve cover 220 When the force is removed, the valve cover 220 can return to the fully closed position of the valve under the action of the return member 230 .

The full-valve open position and the fully-closed position of the valve cover 220 relative to the sub-valve body 210 may respectively correspond to the throttle plate 930A of the throttle valve 900A rotating to a first predetermined angle range relative to the main valve body 901A (for example, the throttle valve has a The opening angle of the throttle valve plate 930A with a larger air intake amount) and the second predetermined angle range (for example, the opening angle of the throttle valve plate 930A with a smaller air intake amount). When the throttle valve plate 930A gradually rotates from the first predetermined angle position along the first direction (for example, counterclockwise direction) to the second predetermined angle to gradually increase the air intake amount of the throttle valve, the throttle valve plate 930A pushes the valve cover 220 to be able to Constantly overcoming the restoring force of the return member 230 makes the valve cover 220 gradually move from the valve fully closed position to the valve fully open position. When the throttle valve plate 930A rotates in the second direction (for example, clockwise) from a second predetermined angle to gradually reduce the air intake amount of the throttle valve (that is, gradually close the throttle valve 900A), the valve cover 220 is in the position of the return member 230 Under the action of the valve, it gradually moves towards the fully closed position of the valve.

As an example, the sub-valve body 210 may be formed with a controlled opening for communicating the sub-air flow channel of the sub-valve body 210 with the interior of the main valve body 901A, and a control opening is provided on the valve cover 220 . When the sub-valve body 210 moves, the control opening can completely overlap, partially overlap or completely stagger with the controlled opening, thereby changing the opening degree of the sub-air flow channel of the sub-valve body 210 . As an example, the valve cover 220 can be formed into a plate shape, and a through hole (ie, a control opening) that completely corresponds to the shape of the controlled opening of the sub-valve body 210 is opened on the valve cover 220, and the control opening and the controlled opening are formed on the valve cover 220. When the openings are completely staggered, a part of the valve cover 220 can completely cover the controlled opening.

Next, the detailed structure of the EGR valve in Example 1 will be described in detail with reference to FIGS. 2A-2D.

As shown in FIG. 2A , a through hole can be opened on the side wall of the main valve body 901A forming the air outlet portion 920A, and the through hole allows the air outlet portion 920A of the throttle valve 900A to communicate with the outside of the throttle valve 900A. EGR valve 200 is provided at a position corresponding to the through hole on the side wall of throttle valve 900A. The sub-valve body 210 of the EGR valve 200 can be connected to the side wall of the throttle valve 900A, and a sub-airflow passage allowing the exhaust gas of the engine to pass can be formed on the sub-valve body 210, and the sub-airflow passage can be opened in the main valve body 901A. The through hole on the side wall communicates with the air outlet portion 920A. For example, a pipe line 112 (or an extension pipe 560 described below) may be formed at the through hole, and the EGR valve 200 may be fixed on the pipe line 112 so that, for example, by fixing the pipe line 112 to the main valve body 901A The sub-valve body 210 of the EGR valve 200 is fixed to the side wall.

Specifically, at least a portion of the sub-valve body 210 may protrude into the throttle valve 900A, so that engine exhaust gas may enter the air outlet portion 920A of the throttle valve 900A through the sub-airflow passage of the sub-valve body 210 . Specifically, the controlled opening 216 of the sub-valve body 210 is located in the air outlet portion 920A of the throttle valve 900A, and the valve cover 220 is also located in the air outlet portion 920A of the throttle valve 900A and covers the controlled opening 216 . The valve cover 220 can be actuated by the throttle valve 900A, so that it can move relative to the sub-valve body 210 and have different strokes, so as to control the area of the controlled opening 216 to be opened, thereby controlling the opening degree of the sub-airflow passage. When the actuating force acting on the valve cover 220 is removed, the valve cover 220 can be restored to the original position by the return member 230 .

As shown in FIG. 2B , the sub-valve body 210 may include a base plate 212 and a pressure plate 213 , and the base plate 212 and the pressure plate 213 may form a sandwich structure and be fixedly connected to each other by fasteners or the like. The pressing plate 213 can be pressed tightly on the base plate 212, and a housing space for accommodating the valve cover 220 can be formed between the base plate 212 and the pressing plate 213, and the pressing plate 213 can also press and assist the fixing of the valve cover 220 And so on, which is conducive to the formation of a sub-valve assembly with a stable structure. The pressing plate 213 may be formed in a plate shape and is mainly used to limit the valve cover 220 on the base plate 212 and prevent the valve cover 220 from falling off from the base plate 212, but the specific shape of the pressing plate 213 is not limited thereto.

As an example, a connection plate 211 may be fixedly provided on the pipe port of the exhaust pipeline 112 connected to the EGR valve 200 , and the EGR valve 200 may be connected to the exhaust pipeline 112 by being installed on the connection plate 211 . A connection plate opening 214 may be formed in the connection plate 211, and the connection plate opening 214 may be at least partially aligned with the outlet of the exhaust line 112 (or the extension tube 560 described below) to receive air from the exhaust line 112. Engine exhaust.

In some embodiments of the present disclosure, a platen opening 215 may be formed in the platen 213 , and a controlled opening 216 may be formed in the base plate 212 , the platen opening 215 may make the controlled opening 216 on the base plate 212 fully exposed. The connection plate opening 214 and the pressure plate opening 215 can at least partially overlap each other and not block the controlled opening 216 on the base plate 212, so that the engine exhaust can pass through the connection plate opening 214, the controlled opening 216, the control opening 226 and The overlapping portion of the platen opening 215 enters the air outlet portion 920A of the throttle valve 900A. In addition, the controlled opening 216 may also at least partially overlap with both the connecting plate opening 214 and the pressing plate opening 215 . As an example, in the EGR valve 200, the connection plate opening 214 and the pressure plate opening 215 may have the same shape and may completely overlap, and the connection plate opening 214 may completely overlap the nozzle section of the exhaust pipe 112, thereby allowing The maximum amount of engine exhaust gas flows through the connection plate opening 214 and the pressure plate opening 215 into the throttle valve 900A. Although it is shown in the drawings that the connection plate opening 214 and the pressure plate opening 215 can have completely corresponding shapes, the present disclosure is not limited thereto, and the connection plate opening 214 and the pressure plate opening 215 can be set to have different shapes and different shapes as required. overlapping area.

In an example, the controlled opening 216 may include a plurality of sub-controlled openings (for example, two or more), and the outer contour jointly formed by the plurality of sub-controlled openings 216 may be consistent with the outer contour of the connection plate opening 214 and the pressure plate opening 215. The contours are corresponding, so that the engine exhaust gas entering through the connection plate opening 214 can enter the pressure plate opening 215 through a plurality of sub-controlled openings 216 . In addition, the maximum overlapping area between the connecting plate opening 214 and the pressing plate opening 215 may be greater than the area of the controlled opening 216 . By setting the controlled opening 216 as a plurality of sub-controlled openings 216 and arranging the plurality of sub-controlled openings 216 along the moving direction of the valve cover 220, the stroke of the valve cover 220 from fully closed valve to fully opened valve can be shortened. . However, the present disclosure is not limited thereto, and although two sub-controlled openings 216 are shown in FIG. 2B , only one sub-controlled opening 216 may be provided as needed.

In addition, a guide portion 217 may be formed on the base plate 212 for guiding the movement of the valve cover 220 and positioning the valve cover 220 during installation. As an example, the guide part 217 may be a recess recessed downward from the upper surface of the base plate 212 and may have a shape corresponding to the main body of the valve cover 220 . However, the structure of the guide portion 217 is not limited thereto, and may also be formed, for example, in a shape protruding from the upper surface of the base plate 212 , as long as it is capable of mounting, positioning and/or guiding movement of the valve cover 220 .

A return member 230 may also be provided between the valve cover 220 and the sub-valve body 210 to limit the valve cover 220 at the fully closed position of the valve. The return member 230 may be a return spring, and the two ends of the return spring are respectively hung on the valve cover 220 and the base plate 212 . As an example, an outwardly extending support arm 218 may also be provided on a laterally outer edge of the base plate 212, the support arm 218 may serve as a fixed end of the return member 230, and the movable end of the return member 230 may be connected to The extension arm 228 of the bonnet 220 , described below, moves with the movement of the bonnet 220 . As an example, the return member 230 may include two return springs, respectively disposed on both sides of the sub-valve body 210, and a pair of support arms 218 may be symmetrically disposed on both sides of the base plate 212, so that the EGR valve 200 Can move stably, reduce motion impact and noise.

The valve cover 220 can receive a mechanical signal determined by the opening angle of the throttle valve 900A, and convert the mechanical signal into a corresponding movement displacement of the valve cover 220 . In addition, the valve cover 220 can be located at the initial position with the return member 230 in the absence of a driving force from the throttle valve 900A. In the initial position, the valve cover 220 can completely cover the controlled opening 216, so that the valve is in a fully closed state.

The valve cover 220 can be disposed in the sub-valve body 210 (for example, can be disposed between the pressure plate 213 of the sub-valve body 210 and the base plate 212 ), and the valve cover 220 can move in the guide portion 217 of the base plate 212 . A control opening 226 may be provided on the valve cover 220, and the control opening 226 of the valve cover 220 may have a shape corresponding to the controlled opening 216 of the sub-valve body 210 (for example, the outer contour of the control opening 226 may be the same as the controlled opening 216 corresponding to the outline). When the valve cover 220 has different moving positions or displacements, the control opening 226 and the controlled opening 216 may form different overlapping regions/areas to allow different flows of engine exhaust gas into the throttle valve. As an example, the control opening 226 includes a plurality of sub-control openings. Correspondingly, two sub-control openings 216 can be set on the sub-valve body 210, so that when the valve cover 220 has a certain displacement (as shown in FIG. 2D ), the two sub-control openings The control opening 226 completely overlaps with the two sub-controlled openings 216, thereby forming the maximum engine exhaust inflow, and when the valve cover 220 has another displacement (as shown in FIG. 2C ), the two sub-control openings 226 overlap with the two sub-controlled openings. The control openings 216 are completely staggered or offset from each other so as not to allow engine exhaust to pass through the EGR valve 200 into the throttle valve 900A.

In order to prevent the bonnet 220 from falling off from the sub-valve body 210, a travel limit groove can also be formed at the end of the guide part 217, and the width of the travel limit groove can be greater than the width of the guide part 217 (for example, the stroke limit groove can be Through the entire base plate 212 in the direction of movement perpendicular to the valve cover 220), extension arms 228 are also formed on both lateral sides of the valve cover 220. Protrude outward. In the fully closed position of the valve, the extension arm 228 can contact the stop end defining the guide portion 217 , thereby preventing the valve cover 220 from moving further and preventing the valve cover 220 from falling off from the sub-valve body 210 .

Specifically, the extension arms 228 can extend outward from both sides of the valve cover 220 so that the valve cover 220 can form a T-shaped structure. The extension arm 228 can extend to the outside of the base plate 212, so that when the valve cover 220 moves in the guide portion 217, the extension arm 228 can be moved by the protrusion on the base plate 212 (or the side end of the guide portion 217). blocking, thereby assisting in limiting the displacement of the valve cover 220 . In addition, a groove is also formed at the end of the extension arm 228 through which the movable end of the return member 230 (eg, a spring) can be connected to the valve cover 220 .

As mentioned above, the return member 230 can have a fixed end, and the fixed end of the return member 230 can be connected to the support arm 218 . Therefore, when the throttle valve 900A is gradually opened from the closed state, the opening angle of the throttle valve 900A gradually increases. At this time, the valve cover 220 can resist the restoring force of the return member 230 and move synchronously with the throttle valve 900A. Therefore, the valve cover 220 The movement displacement will also gradually increase. In addition, when the throttle valve 900A is gradually closed from the open state, the force applied by the throttle valve 900A to the valve cover 220 gradually decreases, and the valve cover 220 gradually returns to the valve fully closed position under the restoring force of the return member 230 .

In the above, the return member 230 may be a spring (eg, a tension spring) or other elastic member or return member, as long as it can provide a return force for the valve cover 220 . In addition, although the drawings show a pair of extension arms 228 and a pair of support arms 218, the present disclosure is not limited thereto, and one or more extension arms 228 and one or more support arms may also be provided as required. 218.

A valve cover driver 950A may also be provided on the throttle valve 900A. The valve cover driver 950A can be fixedly connected to the throttle valve plate 930A or the throttle valve plate shaft 940A so as to move synchronously with the throttle valve 900A, and the valve cover driver 950A can also have different threads to drive the valve cover 220 Different strokes of the valve cover 220 can be realized.

As an example, the valve cover driver 950A may be a cam fixedly arranged on the throttle valve plate 930A and synchronously moved with the throttle valve plate 930A, and the cam may have a curved outer profile corresponding to the stroke of the EGR valve 200 . When the EGR valve 200 is working, the cam can contact the valve cover 220 of the EGR valve 200 to push and squeeze the valve cover 220 to move relative to the sub-valve body 210 to gradually open the controlled opening 216 .

The EGR valve 200 according to the present disclosure may further include a drag reducing member 240 for reducing frictional resistance when the valve cover 220 is driven by the throttle valve 900A, thereby reducing the driving resistance of the throttle valve 900A. The drag reducing member 240 may be a roller or a needle bearing. In this case, the roller or needle bearing may be supported on one end of the valve cover 220 through a rotating shaft, and may roll relative to the valve cover 220 .

Specifically, the valve cover driving member 950A can be formed as a cam, and the cam has a gradually changing radius relative to the throttle valve plate rotating shaft 940A in the contact area with the drag reducing member 240 . During the rotation of the throttle plate rotating shaft 940A, the cam squeeze valve cover 220 moves relative to the sub-valve body 210 . As an example, the bonnet driver 950A can be formed as a meniscus cam, and the distance between the outer contour of the cam and the throttle valve plate rotating shaft 940A changes in a curve shape, for example, the distance between the two ends of the cam and the throttle valve plate is small, and The distance between the middle part of the cam and the throttle valve plate is gradually larger. The cam contacts the valve cover 220 through the curved outer contour, thereby pushing the valve cover 220 to move. When the EGR valve 200 is working, the cam can be in close contact with the drag reducing member 240 of the EGR valve 200 as a rolling wheel or a needle bearing, and at the same time, different displacements of the valve cover 220 can be achieved through the curved outer profile of the cam. However, the present disclosure is not limited thereto, and the drag reducing member 240 may be omitted without affecting the operation of the EGR valve 200 (eg, without causing sticking). Alternatively, other types of drag reducing members 240 may be provided as long as the driving resistance of the throttle valve 900 to the valve cover 220 can be reduced.

In addition, the curved outer profile of the cam can be designed according to different engine types. For example, in a diesel engine, except for a part of the small load area, the throttle valve of the diesel engine is fully open in most states, so the corresponding The curved profile of the cam only works near full opening.

2A and 2E illustrate different working states of the integrated throttle assembly according to Example 1, respectively.

Referring to FIG. 2A , when the throttle valve 900A is closed, the EGR valve 200 may be in a closed state (ie, in an initial position). The bonnet driver 950A (eg, a cam) may have minimal threading. In other words, the drag reducing member 240 on the bonnet 220 may abut at the position where the radius of the operating position of the bonnet driver 950A is the smallest. The bonnet 220 of the EGR valve 200 is tightly pressed against the bonnet driver 950A under the restoring force of the return member 230 , and the EGR valve 200 may also have minimal or no displacement. At this time, the control opening 226 of the valve cover 220 and the controlled opening 216 of the sub-valve body 210 are completely deviated or staggered, so the exhaust gas of the engine cannot enter the throttle valve 900A.

As the throttle plate 930A is rotated in one direction (eg, counterclockwise) from the closed position, the throttle valve 900A is gradually opened. Specifically, the radius of the valve cover driver (for example, a cam) at the position where the valve cover 220 is in contact with the valve cover 220 gradually increases, and the squeeze valve cover 220 moves in a direction gradually away from the throttle valve plate rotation axis 940A. Therefore, the valve cover The driving member 950A can push the valve cover 220 to move in the guide portion 217 . When the valve cover 220 moves, the overlapping area of the control opening 226 and the controlled opening 216 gradually increases, so that the engine exhaust gas passing through the EGR valve 200 also gradually increases.

Referring to FIG. 2E, when the throttle valve 900A is fully opened (that is, the throttle valve 900A has the maximum opening angle and intake air volume), the control opening 226 of the EGR valve 200 completely overlaps the controlled opening 216 to allow the maximum amount of engine exhaust. Air enters throttle valve 900A. In this case, the location where the bonnet driver 950A contacts the bonnet 220 may be at the largest radius of the bonnet driver 950A (eg, a cam).

When the throttle valve plate 930 rotates in the opposite direction, the radius of the part where the valve cover driver 950A (for example, a cam) contacts the valve cover 220 gradually decreases, so that the valve cover 220 gradually approaches the throttle valve under the action of the return member 230 The gate valve plate rotating shaft 940A gradually covers the controlled opening 216 .

Example2: Throttle integrated EGR valve

Example 2 of the integrated throttle assembly according to some embodiments of the present disclosure will be described in detail below with reference to FIGS. 3A to 3D .

The integrated throttle assembly of Example 2 may include a throttle valve 900B and an EGR valve 300 integrated into the throttle valve 900B. In FIGS. 3A to 3D , some components of the throttle valve 900B and the EGR valve 300 are transparentized or omitted in order to illustrate the components disposed in the throttle valve 900B and the EGR valve 300 .

The throttle valve 900B of the integrated throttle valve assembly in Example 2 has a similar structure to the throttle valve 900A of the integrated throttle valve assembly of Example 1, and the description will not be repeated.

EGR valve 300 (sub-valve assembly)

The EGR valve 300 includes a sub-valve body 310 and a valve cover 320, and the sub-valve body 310 is fixed to the throttle valve 900B or other components (for example, the exhaust pipe 112) as a fixing member, and is arranged in relation to the throttle valve 900B. The position corresponding to the through hole 921B on the side wall. On the sub-valve body 310, a sub-air flow passage and a corresponding passage opening (that is, a controlled opening) that allow the exhaust gas of the engine to pass can be formed. One end of the sub-valve body 310 extends into the inside of the throttle valve 900B through the through hole 921B. It can enter the air outlet portion 920B of the throttle valve 900B through the passage opening of the sub-valve body 310 . The valve cover 320 can be actuated by the throttle valve 900B so as to have different movement displacements relative to the sub-valve body 310 to control the valve opening of the EGR valve 300 . The valve cover 320 can be restored to the initial position by the return member, so that the valve cover 320 can close the channel opening of the sub-valve body 310 when the force exerted by the throttle valve plate 930B on the valve cover 320 is removed.

The sub-valve body 310 may have a cylindrical structure, and the sub-valve body 310 of the cylindrical structure may penetrate into the throttle valve 900B through the through hole 921B on the side wall of the throttle valve 900B, so that the first end of the sub-valve body 310 ( The channel outlet port) 311 is located in the throttle valve 900B, while the second end (channel inlet port) 312 of the sub-valve body 310 is located outside the throttle valve 900B. In addition, a controlled opening 316 is formed on the first end 311 of the sub-valve body 310 , and the second end 312 of the sub-valve body 310 can communicate with the exhaust pipe 112 to receive the engine exhaust from the exhaust pipe 112 . and engine exhaust gas entering the sub-valve body 310 may flow through the controlled opening 316 into the air outlet portion 920B of the throttle valve 900B. Although the sub-valve body 310 shown in the drawings has a cylindrical structure, the structure or formation of the sub-valve body 310 is not limited thereto, but may also be formed in other shapes or structures.

The valve cover 320 may include a valve stem 321 and a valve 326 . One end of the valve stem 321 can receive a mechanical signal determined by the opening angle of the throttle valve 900B, and convert the mechanical signal into a movement displacement of the valve cover 320 or the valve stem 321 . The other end of the valve rod 321 can extend into the sub-valve body 310 through the controlled opening 316 on the sub-valve body 310 and be connected to the valve 326 . The valve 326 can be used to block the controlled opening 316 or open the controlled opening 316 from inside the sub-valve body 310 . Accordingly, the size of the air valve 326 may be equal to or greater than the size of the air controlled opening 316 .

In addition, the valve 326 may have various shapes, such as a cone shape, a disk shape, etc., as needed. As an example, the controlled opening 316 is formed as a cone or a circle, so as to conform to and match the outer contour of the valve 326 .

The EGR valve 300 may further include a return member (not shown) connected between the valve cover 320 and the sub-valve body 310 so that the valve cover 320 is in a tendency to close the controlled opening 316 on the sub-valve body 310 . In the initial position, the valve 326 of the valve cover 320 completely covers the controlled opening 316 , and when the throttle valve plate 930B rotates, the valve cover 320 can be pushed to overcome the force of the return member to open the controlled opening 316 . Similar to the solution described in Example 1, the return member can also be a return spring, which can be connected between the inner end of the sub-valve body 310 and the valve stem 321. It will not be described in detail here.

In addition, the EGR valve 300 may further include a drag reducing member 340 for reducing the frictional resistance when the valve cover 320 is driven by the throttle valve 900B, thereby reducing the driving resistance of the throttle valve 900B. The structure of the drag reducing member 340 is similar to that of the drag reducing member 240 of the integrated throttle assembly in Example 1, so the description will not be repeated. Correspondingly, a valve cover driver 950B may also be provided on the throttle valve 900B. The structure of the valve cover driver 950B of the integrated throttle assembly in Example 2 is similar to that of the valve cover driver 950A of the integrated throttle assembly in Example 1. Therefore, the description will not be repeated.

3A and 3D show different working states of the integrated throttle assembly in Example 2, respectively.

Referring to FIG. 3A , when the throttle valve 900B is closed, the EGR valve 300 may be in a closed state (ie, in an initial position). The valve cover driver 950B (for example, a cam) may have the smallest movement stroke, the cam may contact the valve cover 320 at the position with the smallest radius, and the valve 326 of the valve cover 320 of the EGR valve 300 may be compressed under the action of the return member The controlled opening 316 of the sub-valve body 310 forms a sealing relationship with the controlled opening 316 of the sub-valve body 310 , so exhaust gas from the engine cannot enter the throttle valve 900 .

The throttle valve 900B gradually opens as the throttle plate 930B rotates in one direction from the closed position. The thread of the bonnet driver 950B fixedly connected to the throttle plate 930B can be gradually increased. For example, the valve cover driver 950B can be formed as a cam, and the cam can be formed in a meniscus shape with both ends connected to the throttle valve plate 930B. the rout. As the throttle valve plate 930B rotates, the middle portion of the cam gradually contacts the top end of the valve cap 320 , thereby pushing the valve cap 320 toward the sub-valve body 310 . Therefore, the valve cover driver 950B can push the valve cover 220 to move in the valve stem 321 so that the valve stem 321 has a gradually increasing lift. When the valve cover 320 or the valve stem 321 moves, the gap between the valve 326 and the inner wall of the sub-valve body 310 also gradually increases, thereby gradually opening the controlled opening 316 of the sub-valve body 310. Therefore, the engine through the EGR valve 300 The displacement is also gradually increased.

3D, when the throttle valve 900B is fully opened (that is, the throttle valve 900B has the maximum opening angle and intake air volume), the valve 326 of the EGR valve 300 can fully open the controlled opening 316 to allow the maximum amount of engine exhaust Into the air outlet portion 920B of the throttle valve 900B. In this case, the bonnet driver 950 may have a maximum travel range.

When the bonnet driver 950B is a cam, the outer profile of the cam, the lift of the valve stem 321, and the gap between the valve 326 and the first end 311 of the sub-valve body 310 are all functions of the throttle angle, so To achieve the purpose of having different flow areas under different throttle openings.

Example3: Throttle integrated EGR valve

Example 3 of the integrated throttle assembly according to some embodiments of the present disclosure will be described in detail below with reference to FIGS. 4A to 4C .

In Example 3, the integrated throttle assembly may include a throttle valve 900C and an EGR valve 400 integrated into the throttle valve 900C. In FIGS. 4A to 4C , some components of the throttle valve 900C and the EGR valve 400 are transparentized or omitted, so as to illustrate components disposed in the throttle valve 900C and the EGR valve 400 .

The throttle 900C of the integrated throttle assembly of Example 3 differs from the throttle 900A of the integrated throttle assembly of Example 1 in that the throttle 900C does not have a separate valve cover driver 950A, but utilizes a throttle Gate valve plate 930C directly drives EGR valve 400 .

EGR valve 400 (sub-valve assembly)

The EGR valve 400 includes a sub-valve body 410 and a valve cover 420. The sub-valve body 410 is fixed to the throttle valve 900C or other components (for example, the exhaust pipe 112) as a fixture, and passes through the side wall of the throttle valve 900C. The through hole 921C communicates with the inside of the throttle valve 900C. An inlet and an outlet that allow engine exhaust to pass through can be formed on the sub-valve body, the inlet end is connected to the exhaust pipe 112 , and the outlet end is connected to the throttle valve 900C and can communicate with the through hole 921C. The sub-valve body 410 may be formed as a pipe connected to the through hole 921C, and connected to the side wall of the throttle valve 900C. Furthermore, the sub-valve body 410 can be integrated with the through hole 921C, in other words, the through hole 921C itself can be used as a sub-valve body, as the most simplified sub-valve body structure (for example, referring to the structure shown in FIG. 4C ). At this time, the through hole 921C is the controlled opening. Engine exhaust can enter the air outlet portion 920C of the throttle valve 900C through the through hole 921C, mix with the air introduced through the throttle valve 900C, and then enter the engine. The valve cover 420 can be fixedly connected to the throttle valve 900C, so that it can move synchronously with the throttle valve 900C to have different motion strokes relative to the sub-valve body 410 (or the through hole 921C), so as to control the opening of the through hole 921C.

As an optional solution, the sub-valve body can be arranged on the inner wall of the throttle valve 900C at the through hole 921C, the sub-valve body can have a base and a connecting seat, the base is used to guide the movement of the valve cover 420 to reduce frictional resistance, The connecting seat is used to fix the base to the throttle valve 900C or connect to the exhaust pipe through the through hole 921C, and is used to receive engine exhaust.

Specifically, the connection seat may have a tubular structure, and one end of the connection seat may protrude from the throttle valve 900C through the through hole 921C to be connected to the exhaust pipe 112 . The other end of the connecting base can be integrally connected with the base.

The base can be arranged on the inner wall of the main valve body 901C and has a shape (for example, can have an arc surface) adapted to the inner wall of the main valve body 901C, and a guide structure is provided on the bottom surface of the base for use in In order to guide the movement of the valve cover 420.

The valve cover 420 can be fixedly connected with the throttle valve plate 930C so as to move synchronously with the throttle valve plate 930C. The valve cover 420 may be a fan-shaped box structure formed by two fan-shaped side plates 421 and one arc-shaped plate 422, and one end of the two fan-shaped side plates 421 and one end of one arc-shaped plate 422 are fixedly connected to the throttle valve plate 930C , and can form a sealing relationship with the throttle valve plate 930C. The other ends of the two fan-shaped side plates 421 and the other end of one arc-shaped plate 422 can constitute the outlet of the valve cover 420 .

A control opening 426 may be formed on the arc-shaped plate 422 , and a guide protrusion may be formed at a position where the arc-shaped plate 422 intersects with the two fan-shaped side plates 421 to move in the guide groove of the base. In addition, the curved plate 422 can have a protruding portion 423 relative to the fan-shaped side plate 421, so as to guide the engine exhaust, so as to guide the airflow to flow along the inner surface of the curved plate 422, and break the fluid boundary layer to form turbulent flow , to avoid airflow noise.

In another embodiment, the sub-valve body can be omitted without affecting the operation of the EGR valve 400 (for example, without causing sticking), the through hole 921C is used as the controlled opening, and the arc shape of the valve cover 420 is used Plate 422 forms a sealing relationship with the inner wall of throttle valve 900C.

4A and 4C show different working states of the integrated throttle assembly in Example 3, respectively.

4A, when the throttle valve 900C is closed, the arc-shaped plate 422 of the valve cover 420 completely seals the controlled opening on the base of the sub-valve body (or, the through hole 921C on the side wall of the throttle valve 900C), so Exhaust from the engine cannot enter the throttle valve 900C.

When the throttle plate 930C rotates in one direction, the throttle valve 900C gradually opens. The stroke of the valve cover 420 fixedly connected with the throttle valve plate 930C can be gradually increased, so that the control opening 426 of the valve cover 420 and the controlled opening of the sub-valve body 410 (or the through hole 921C on the side wall of the throttle valve 900C) The overlapping area of the EGR valve 400 is gradually increased, so the amount of engine exhaust gas passing through the EGR valve 400 is also gradually increased.

Referring to FIG. 4C, when the opening angle of the throttle valve 900C reaches a predetermined angle, the control opening 426 of the valve cover 420 completely overlaps the controlled opening of the sub-valve body (or, the through hole 921C on the side wall of the throttle valve 900C). When , the maximum amount of engine exhaust gas is allowed to enter throttle valve 900C.

In the above description, the predetermined angle, the overlapping area between the control opening 426 of the valve cover 420 and the controlled opening of the sub-valve body (or, the through hole 921C on the side wall of the throttle valve 900C), and the size of the controlled opening are Can be changed as needed.

As mentioned above, before the engine exhaust gas is introduced into the throttle valve, it needs to be cooled by the EGR cooler 113, so as to avoid excessive exhaust gas temperature from increasing the temperature of the air inside the throttle valve, thereby avoiding abnormal combustion. Therefore, another aspect of the present disclosure is to provide a cooling assembly to cool engine exhaust gas entering into the EGR valve 200 , 300 or 400 according to the above examples while improving fuel efficiency.

The cooling assembly according to some embodiments of the application will be described in detail below with reference to FIGS. 5A to 5C , and in FIGS. 5A to 5C , some parts of the throttle valve 900A and the cooling assembly are transparentized or omitted for ease of illustration. Components in the throttle valve 900A and cooling assembly.

FIG. 5A shows a schematic diagram of a cooling assembly 500A according to one example.

Referring to FIG. 5A , a cooling assembly 500A may include an inner tube 510A and an outer tube 520A. Inner tube 510A may be used to receive engine exhaust and direct it into an EGR valve (eg, EGR valve 200 , EGR valve 300 , or EGR valve 400 ) according to some embodiments of the presently disclosed application, between outer tube 520A and inner tube 510A. A passage is formed for receiving a cooling medium (for example, coolant) to cool engine exhaust gas flowing in the inner pipe 510A.

The inner tube 510A may have an inner tube inlet 511A for receiving engine exhaust from the exhaust line 112 and an inner tube outlet 512A, and the engine exhaust entering from the inner tube inlet 511A may pass through the inner tube 510A then exits the inner tube outlet 512A. The inner pipe inlet 511A may be connected to an exhaust line connected to an engine manifold, or to a volute of a turbocharger, for example by a line connection or the like. Inner tube outlet 512A may also be connected to the EGR valve via a line connection.

The outer tube 520A may have an outer tube inlet 521A and an outer tube outlet 522A. The outer tube inlet 521A may be disposed on a sidewall of the outer tube 520A proximate the EGR valve (ie, disposed proximate the inner tube outlet 512A). Outer pipe outlet 522A may be disposed on a side wall of outer pipe 520A away from the EGR valve (ie, disposed near inner pipe inlet 511A) for discharging cooling medium. By setting the positions of each outlet and inlet, the hot air flow and the cooling medium flow countercurrently, thereby improving the cooling efficiency. However, the positions of the outer tube inlet 521A and the outer tube outlet 522A are not limited thereto, and the positional relationship between the outer tube inlet 521A and the outer tube outlet 522A can be set in other ways as required.

The inner tube 510A can be sleeved in the outer tube 520A, preferably, the inner tube 510A can be supported in the outer tube 520A by a bracket 530A, so that there is a gap between the outer wall of the inner tube 510A and the outer tube 520A, thereby ensuring the flow channel of the cooling medium . The position and number of the brackets 530A can be set as needed, so that the inner tube 510A is stably supported in the outer tube 520A. In addition, the distribution of the brackets 530A can also be designed as required to ensure that the outer tube 520A will not contact the inner tube 510A when the inner tube 510A and the outer tube 520A are accidentally bent. In addition, the bracket 530A may have a plurality of through holes to ensure smooth flow of the cooling medium.

FIG. 5B shows a schematic diagram of a cooling assembly 500B according to another example.

Referring to FIG. 5B , a cooling assembly 500B may include an inner tube 510B and an outer tube 520B. Inner tube 510B may be used to receive engine exhaust gas and direct it into an EGR valve (eg, EGR valve 200 , EGR valve 300 , or EGR valve 400 ) according to some embodiments of the present disclosure, between outer tube 520B and inner tube 510B. Passages are formed operable to receive a cooling medium (eg, coolant) to cool engine exhaust gas flowing in the inner tube 510B.

The inner tube 510B may have an inner tube inlet 511B for receiving engine exhaust from the exhaust line 112 and an inner tube outlet 512B, and the engine exhaust entering from the inner tube inlet 511B may pass through the inner tube The tubing then exits the inner tube outlet 512B. The inner tube inlet 511B may be connected to an exhaust line connected to an engine manifold, or to a volute of a turbocharger, through, for example, a line connection 550B. Inner tube outlet 512B may also be connected to the EGR valve via line connection 550B.

Additionally, the inner tube 510B may include a first inner tube segment 515B, a second inner tube segment 517B, and a third inner tube segment 519B. As an example, the first inner pipe section 515B and the third inner pipe section 519B may be straight lines formed of a hard material (for example, metal), while the second inner pipe section 517B may be made of a soft material (for example, rubber) or A curved pipe formed from a hard material such as metal. In this case, both ends of the second inner pipe section 517B may be connected to the first inner pipe section 515B and the third inner pipe section 519B, respectively, using connectors 540B such as clamps. By forming the second inner pipe section 517B as a curved pipe, it is advantageous to save the arrangement space for the cooling components, and furthermore, since the overall length of the cooling components may not be reduced, sufficient cooling of the exhaust gas of the engine may be ensured.

The outer tube 520B may have an outer tube inlet 521B and an outer tube outlet 522B. Outer pipe inlet 521B may be disposed on the side wall of outer pipe 520B near the EGR valve (ie, disposed near inner pipe outlet 512B) for receiving cooling medium and facilitating more efficient cooling of engine exhaust that is about to enter the EGR valve. The outer pipe outlet 522B may be disposed on the side wall of the outer pipe 520B away from the EGR valve (ie, disposed near the inner pipe inlet 511B) for discharging the cooling medium. However, the positions of the outer tube inlet 521B and the outer tube outlet 522B are not limited thereto, and the positional relationship between the outer tube inlet 521B and the outer tube outlet 522B can also be set in other ways as required.

Additionally, the outer tube 520B may include a first outer tube segment 525B, a second outer tube segment 527B, and a third outer tube segment 529B. As an example, the first outer pipe section 525B and the third outer pipe section 529B may be straight lines formed of a hard material (eg, metal), while the second outer pipe section 527B may be made of a soft material (eg, rubber) or A curved pipe formed from a hard material such as metal. In this case, both ends of the second outer pipe section 527B may be connected to the first outer pipe section 525B and the third outer pipe section 529B, respectively, using connectors 540B such as clamps. The curved shape of the second outer pipe section 527B may be the same as the curved shape of the second inner pipe section 517B to ensure adequate cooling of the engine exhaust.

The inner tube 510B can be sleeved in the outer tube 520B. Preferably, the inner tube 510B can be supported in the outer tube 520B by a bracket 530B. The position, quantity and distribution of the brackets 530B can be set as required, so that the inner tube 510B is stably supported in the outer tube 520B. In addition, the bracket 530B may have a plurality of through holes to ensure smooth flow of the cooling medium. As an example, at least the bend of the second inner tube section 517B is braced 530B to ensure that the outer tube 520B of soft material does not contact the inner tube 510B, thereby avoiding poor cooling caused by direct contact of the outer tube 520B with the inner tube 510B.

FIG. 5C shows a schematic diagram of cooling assembly 500B coupled to an integrated throttle assembly (eg, EGR valve 200 ).

The sub-valve body 210 of the EGR valve 200 in Example 1 and the sub-valve body 310 of the EGR valve 300 in Example 2 are fixed to the exhaust line 112 as fixtures. In order to facilitate the fixed connection between the sub-valve bodies 210 and 310 and the cooling assembly, a sub-valve body extension pipe 560 may be provided additionally.

One end of the sub-valve body extension tube 560 can be fixedly connected to the sub-valve body of the EGR valve 200 or 400 , and the other end of the sub-valve body extension tube 560 can be fixedly connected to the pipeline connector 550B of the outer tube 520B.

During normal operation of the EGR valve, engine exhaust gas enters the inner tube 510B from the inner tube inlet 511B and flows to the inner tube outlet 512B. At the same time, the cooling medium enters from the outer pipe inlet 521B, flows out from the outer pipe outlet 522B, and continuously circulates between the inner pipe 510B and the outer pipe 520B to cool the engine exhaust gas flowing in the inner pipe 510B. In addition, the overall temperature of the cooling assembly can be ensured to be lower than the temperature of the engine coolant, so the cooling assembly 500B may not be thermally wrapped.

It should be noted that by following the cooling assemblies 500A and 500B in the above examples, it is possible to effectively reduce costs while cooling the engine exhaust. In addition, relatively low-cost materials can be used for the materials of related components (eg, inner tube, outer tube, cooling medium, etc.).

It should be understood that engine load conditions may require or allow different temperatures of engine exhaust gas to enter the throttle. Therefore, it may be advantageous to adjust the cooling effectiveness of the temperature of the cooling medium entering the EGR valve according to the load situation of the engine, which may allow cost reduction.

For example, when the engine is working at low to medium loads, the intake air volume of the engine is not the main conflict, so the EGR air flow can be allowed to be less cooled; while when the engine is working at high loads, it may be required that the engine exhaust gas entering the EGR valve go through a relatively small amount of air. Sufficient cooling to avoid engine exhaust affecting the intake air temperature in the throttle valve, thereby increasing intake air density and improving power output.

Therefore, the present disclosure also provides another cooling assembly 500C. The cooling assembly 500C has two sets of cooling medium passages to open different cooling passages at different opening angles of the throttle valve.

Referring to FIGS. 5D to 5F , the cooling assembly 500C may have a first pipeline 510C and a second pipeline 520C. The first pipeline 510C can communicate with, for example, one of the two controlled openings 216 of the EGR valve 200 (hereinafter referred to as the first controlled opening), and the second pipeline 520C can communicate with, for example, the two controlled openings of the EGR valve 200 The other of 216 (hereinafter referred to as the second controlled opening) communicates. Therefore, engine exhaust gas passing through the first line 510C can only enter the throttle through the EGR valve when the first controlled opening at least partially overlaps with the control opening, while the second line 520C can only enter the throttle when the second controlled opening at least partially overlaps with the control opening. The control opening at least partially overlaps the control opening through the EGR valve into the throttle valve.

5D and 5E, when the engine load is low (that is, the opening angle of the throttle valve 900A is smaller than the first predetermined angle), the engine exhaust can only pass through the overlapping area between the first controlled opening and the control opening into throttle valve 900A. At this time, since the intake air volume of the engine is not the main conflict, the first pipeline 510C may not be cooled to take into account the cost. The first predetermined angle can be set according to engine type, fuel type, vehicle power performance and the like.

Referring to FIG. 5F, when the engine load is high (that is, the opening angle of the throttle valve 900 is greater than the first predetermined angle), the engine exhaust gas can enter the throttle valve 900 through the overlapping area between the second controlled opening and the control opening. middle. Proper cooling of the engine exhaust gas may be beneficial at this time due to the increased intake air demand of the engine and the increased engine exhaust gas being allowed to pass. Therefore, the second line 520C can be properly cooled to balance cost and engine requirements.

Example 4: Throttle Integrated EGR Valve

The EGR valves in the above-mentioned Example 1, Example 2 and Example 3 are used to introduce the engine exhaust gas into the air outlet portion of the throttle valve, and the engine exhaust gas introduced into the air outlet portion generally has a high pressure, therefore, according to the above-mentioned Example 1, Example The EGR valves of 2 and 3 may also be referred to as high-pressure EGR valves. Alternatively, the engine exhaust gas can also be introduced into the intake line before the air inlet portion of the throttle valve via the EGR valve, in which case the engine exhaust gas introduced into the intake line before the air inlet portion of the throttle valve generally has a low pressure , Therefore, this EGR valve can also be called a low-pressure EGR valve.

Example 4 of the EGR valve according to some embodiments of the present disclosure will be described in detail below with reference to FIGS. 6A to 6B . Wherein, some components of the throttle valve 900D and the EGR valve 600 are transparentized or omitted, so as to illustrate components disposed in the throttle valve 900D and the EGR valve 600 .

Throttle valve 900D (main valve assembly)

Referring to FIG. 6A , the throttle valve 900D may include a main valve body 901D, a throttle valve plate 930D disposed inside the main valve body 901D, and a throttle valve plate rotating shaft 940D that drives the throttle valve plate 930D to rotate, and the throttle valve plate 930D passes through the throttle valve plate rotating shaft 940D It is rotatably installed in the main valve body 901D. The throttle valve plate 930D divides the interior of the throttle valve 900D into an air inlet portion 910D and an air outlet portion 920D, and the throttle valve plate rotating shaft 940D can be driven to rotate by a throttle driver (for example, a drive motor, etc.), so that the throttle valve plate rotating shaft 940D The connected throttle valve plate 930D rotates to adjust the opening degree of the throttle valve 900D, thereby adjusting the amount of air entering the air outlet portion 920D from the air inlet portion.

The throttle valve plate rotating shaft 940D in Example 4 may have an extension shaft 960D, which may be a rotating shaft provided outside the throttle valve 900D and linked with the throttle valve plate rotating shaft 940D.

EGR valve 600 (sub-valve assembly)

6A and 6B, the EGR valve 600 may include a sub-valve body 610 and a valve cover 620, the sub-valve body 610 may be fixedly connected to the main valve body 901D of the throttle valve, the sub-valve body 610 is provided with an air passage, and the valve cover 620 is linked with the extension shaft 960D and can move relative to the sub-valve body 210 between the valve full-open position and the valve full-close position, so as to control the opening degree of the airflow channel of the sub-valve body 610 .

The sub-valve body 610 may have a cylindrical structure, and the central axis of the cylindrical-shaped sub-valve body 610 may be perpendicular to the central axis of the main valve body 901D. The first end of the sub-valve body 610 of cylindrical structure can be provided with a shaft hole to allow the extension shaft 960D to pass through the shaft hole. , the pipeline 109 after the turbine 116, or the pipeline 112 before the turbine 116) communicates. Optionally, the sub-valve body 610 may have a cylindrical structure with both ends open, specifically, the first end of the sub-valve body 610 may be fully opened and may be fixedly connected to the main valve body 901D of the throttle valve 900D, and the sub-valve body The first end of 610 and the main valve body 901D are sealed to each other, and the second end of the sub-valve body 610 can communicate with the exhaust pipe of the engine.

In addition, a controlled opening 616 can also be provided on the side wall of the sub-valve body 610, and the controlled opening 616 makes the inside of the sub-valve body 610 and the intake pipeline of the throttle valve (for example, the pipeline 101 shown in FIG. 1 , 108 or 105) are connected.

The valve cover 620 can be sleeved in the sub-valve body 610 and can be linked with the extension shaft 960D. As an example, the bonnet 620 may also have a cylindrical structure, and the first end of the bonnet 620 of the cylindrical structure is fixedly connected to the extension shaft 960D so as to move synchronously with the extension shaft 960D. The second end of the valve cover 620 can also be fully opened to communicate with the engine exhaust pipe and allow engine exhaust to enter the interior of the valve cover 620 through the second end of the valve cover 620 .

In addition, a control opening 626 can also be provided on the side wall of the valve cover 620. The control opening 626 can at least partially overlap with the controlled opening 616 so as to at least partially open the controlled opening 616, and the control opening 626 can overlap with the controlled opening. 616 are fully staggered, thereby closing the charged opening 616.

The outer sidewall of the valve cover 620 may be in close contact with the inner wall of the valve body 610 to form a seal to prevent engine exhaust from leaking into the gap between the sub-valve body 610 and the valve cover 620 .

In the example shown in the drawings, the valve cover 620 is disposed inside the sub-valve body 610 and fixedly connected with the extension shaft 960D. However, the present solution is not limited thereto. The bonnet 620 is also sleeved on the outer periphery of the sub-valve body 610, and the second end of the bonnet 620 can protrude a predetermined distance relative to the second end of the sub-valve body 610, so that the protruding part The inner surface of the shaft 960D is connected to the extension shaft 960D, as long as the relative rotation of the two can be realized to adjust the engine displacement that can flow into the intake pipeline of the throttle valve.

When the throttle valve 900D is closed, the side wall of the valve cover 620 completely seals the controlled opening 616 of the sub-valve body 610 , so the exhaust gas of the engine cannot enter the throttle valve 900D.

When the throttle plate rotating shaft 940D rotates in one direction, the throttle valve 900D is gradually opened. The rotation angle of the extension shaft 960D fixedly connected with the throttle valve plate shaft 940D and the valve cover 620 can gradually increase, so that the overlapping area between the control opening 626 of the valve cover 620 and the controlled opening 616 of the sub-valve body 610 gradually increases. The engine displacement of the EGR valve 600 is also gradually increased.

When the opening angle of the throttle valve 900D reaches a predetermined angle, the control opening 626 of the valve cover 620 completely overlaps the controlled opening 616 of the sub-valve body, at this time, the maximum amount of engine exhaust gas is allowed to enter the throttle valve 900D.

In the above description, the predetermined angle, the overlapping area between the control opening 626 of the valve cover 620 and the controlled opening 616 of the sub-valve body, and the size of the controlled opening can obviously be changed according to needs, and in different applications Obviously different area ratios are possible.

Example 5: EGR valve 600A (sub-valve assembly)

6C shows a schematic diagram of Example 5 of the integrated throttle assembly according to some embodiments of the present disclosure. In this Example 5, some components of the throttle valve 900E and the EGR valve 600A are transparentized or omitted in order to show components provided in the throttle valve 900E and the EGR valve 600A.

The difference between the integrated throttle assembly in Example 5 and the integrated throttle assembly in Example 4 lies in that the structure of the EGR valve is different. The structure of the throttle valve 900E is similar to that of the throttle valve 900D, and the corresponding description is omitted here.

In this Example 4, the EGR valve 600A may include a sub valve body 610A and a valve cover 620A. The sub-valve body 610A may have a cylindrical structure and be arranged outside the main valve body 901E of the throttle valve 900E. 610A may be arranged in parallel with main valve body 901E. Both ends of the sub-valve body 610A are open to connect with the engine exhaust pipeline (for example, for example, the pipeline 109 after the turbine 116, or the pipeline 112 before the turbine 116) and the intake pipeline of the throttle valve (for example, as The pipelines 101, 108 or 105) shown in FIG. 1 are in communication with each other.

The valve cover 620A is formed in a sheet shape, is provided inside the sub-valve body 610A, and has the same shape and size as the inner cavity section of the sub-valve body 610A. For example, both the sub-valve body 610A and the valve cover 620A are circular. The extension shaft 960E penetrates the sub-valve body 610A, and the valve cover 620A is fixedly connected to the extension shaft 960E to move synchronously with the extension shaft 960E. The valve cover 620A divides the sub-valve body 610A into two parts, that is, a first part communicated with the exhaust pipe of the engine and a second part communicated with the intake pipe of the throttle valve.

When the throttle valve 900E is closed, the edge of the valve cover 620A closely contacts the inner wall of the sub-valve body 610A, so that the first part and the second part of the sub-valve body 610A are completely disconnected, so the exhaust gas of the engine cannot enter the throttle valve 900E.

When the throttle plate shaft 940E rotates in one direction, the throttle valve 900E gradually opens. The displacement of the extension shaft 960E fixedly connected with the throttle valve plate rotation shaft 940E and the valve cover 620A can gradually increase, so that there is a gradually larger gap between the edge of the valve cover 620A and the inner wall of the sub-valve body 610A, so that the EGR valve 600A The engine displacement is also gradually increased.

In the above description, the relationship between the rotation angle of the throttle valve plate shaft 940E, the rotation angle of the valve cover 620A, and the size of the gap between the valve cover 620A and the sub-valve body 610A can obviously be changed according to needs. Obviously, there may be different correspondences in different applications.

The EGR valves 600 and 600A described above with reference to FIGS. 6A to 6C are obviously applicable to both high-pressure EGR valves and low-pressure EGR valves.

Example 6: Throttle Integrated RCV Valve

Example 6 of the integrated throttle assembly according to some embodiments of the present disclosure will be described in detail below with reference to FIGS. 7A to 7D .

The integrated throttle assembly of Example 6 may include a throttle valve 900F and an RCV valve 700 integrated into the throttle valve 900F. In FIGS. 7A to 7D , some components of the throttle valve 900F and the RCV valve 700 are transparentized or omitted in order to illustrate the components disposed in the throttle valve 900F and the RCV valve 700 .

Throttle valve 900F (main valve assembly)

7A and 7B, the throttle valve 900F may include a main valve body (throttle valve body) 901F and a throttle valve plate 930F disposed in the main valve body 901F, and the throttle valve plate 930F may be connected to the main valve through a throttle valve plate rotating shaft 940F. Body 901F. The throttle valve plate 930F divides the throttle valve 900F into an air inlet portion 910F and an air outlet portion 920F, and the throttle valve plate rotating shaft 940F can be driven to rotate by a throttle driver (for example, a driving mechanism including a driving motor, a reduction gear, etc.), so that The throttle plate 930F connected to the throttle plate shaft 940F can adjust the amount of air entering the air outlet portion 920F from the air inlet portion 910F.

As an example, when the engine has an air intake demand, the throttle driver can rotate the throttle valve plate rotating shaft 940F in a certain direction (for example, clockwise) by a certain angle according to the intake air demand, so as to open the throttle valve plate 930F, so that the The pure air introduced into the air inlet portion 910F of the throttle valve 900F may enter the air outlet portion 920F through the opening angle of the throttle valve plate 930F, and then enter into the engine.

In addition, a first through hole 960F may be provided on a side wall of the main valve body 901F forming the air inlet portion 910F, and a second through hole 970F may be provided on a side wall of the main valve body 901F forming the air outlet portion 920F. . That is, the first through hole 960F and the second through hole 970F are located upstream and downstream of the throttle plate 930F, respectively. The first through hole 960F communicates the air inlet portion 910F of the throttle valve 900F with the outside of the side wall of the main valve body 901F, and the second through hole 970F communicates the air outlet portion 920F of the throttle valve 900F with the outside of the side wall of the main valve body 901F.

RCV valve 700 (sub-valve assembly)

The RCV valve 700 is attached to the side wall of the throttle valve body 901F. Referring to FIGS. 7A to 7C , the RCV valve 700 may include a valve cover 720 and a sub-valve body 730 . The sub-valve body 730 constitutes the main body of the RCV valve 700 and is fixedly connected to the throttle valve 900F. The valve cover 720 is at least partially disposed in the air outlet portion 920F of the throttle valve 900F and can be driven by the throttle valve plate 930F, the valve cover 720 communicates or closes the second through hole 970F on the air outlet portion 920F with the sub-valve body 730, The sub valve body 730 communicates the first through hole 960F on the air inlet portion 910F with the outside.

The sub-valve body 730 can be arranged to correspond to the position of the throttle plate rotating shaft 940F of the throttle valve 900F, and can be fixedly connected to the outer wall of the throttle valve 900F, or can be integrally formed with the throttle valve 900F. In addition, the sub-valve body 730 is also provided with a pressure relief channel (including a pressure relief cavity and a pressure relief outlet) communicating with the outside and a control valve plate 733 of the pressure relief channel. The control valve plate 733 of the pressure relief channel selectively releases the pressure The channel is separated from or communicates with the air inlet portion 910F.

The sub-valve body 730 may include a valve inner ring 731 , a valve outer ring 732 , a control valve plate 733 , a pretension member 734 and a valve housing 739 . The valve inner ring 731 and the valve outer ring 732 are located between the pretension member 734 and the main valve body 901F and are both formed in a cylindrical shape. The valve inner ring 731 is sleeved in the valve outer ring 732 and coaxially arranged with the valve outer ring 732 , and is separated from the valve inner ring 731 by a predetermined gap. The axial directions of the valve inner ring 731 and the valve outer ring 732 are perpendicular to the axial direction of the main valve body 901F. Both the first end of the valve inner ring 731 and the first end of the valve outer ring 732 are connected to the outer wall of the main valve body 901F, thereby forming a pressure relief chamber between the outer wall of the valve inner ring 731 and the inner wall of the valve outer ring 732 . The valve housing 739 is disposed on the second end of the valve outer ring 732 such that the outer surface of the valve outer ring 732 is at least partially exposed. A pressure relief outlet 736 may be provided on the valve outer ring 732 , and the pressure relief outlet 736 may be provided on the side wall of the valve outer ring 732 facing the air inlet side of the throttle valve 900F. The pressure relief outlet 736 can be connected with any pipeline before the compressor of the turbocharger (of course, it should be after the air filter), so the pressure communicated with the pressure relief outlet 736 is always the pre-pressure pressure (that is, low pressure). That is, under normal conditions, the pressure between the valve outer ring 732 and the valve inner ring 731 should be low pressure.

The control valve plate 733 can be a diaphragm and covers the second end of the inner ring 731 of the valve and the second end of the outer ring 732 of the valve so as to seal between the outer wall of the inner ring 731 of the valve and the inner wall of the outer ring 732 of the valve. pressure relief chamber. A pre-tightening member 734 is provided on the outer side of the control valve plate (or diaphragm) 733 , and the diaphragm is tightly abutted against the second end of the valve inner ring 731 by the pre-tightening member 734 . As an example, one end of the pretension member 734 is fixedly connected to the valve housing 739, and the other end of the pretension member 734 abuts against the inner ring 731 of the valve with a predetermined pretension force. The inner chamber of the diaphragm, and the pretensioning member 734 is disposed in the inner chamber of the diaphragm. Since the diaphragm separates the valve inner ring 731 and the valve outer ring 732 , the valve inner ring 731 and the valve outer ring 732 are sealed or not communicated with each other through the diaphragm. As an example, the pre-tightening member 734 may be a coil spring, and a limit post is provided on the valve housing 739 at a position corresponding to the coil spring, and the limit post extends into the coil spring to position the coil spring.

In addition, there may also be a diaphragm opening 735 with a diameter d on the diaphragm, which communicates both sides of the diaphragm and may communicate with the interior of the valve inner ring 731 to allow the air inlet portion through the throttle valve 900F The air at 910F is filled into the inner chamber of the diaphragm through the first through hole 960F, the interior of the valve inner ring 731 and the diaphragm opening 735 . Since the air in the air inlet portion 910F of the throttle valve 900F has a boost pressure and the valve outer ring 732 has a low pressure, the pressurized air charged into the inner cavity of the diaphragm can further compress the diaphragm inside the valve body The part between the ring 731 and the valve outer ring 732, and make the valve inner ring 731 and the valve outer ring 732 have a stronger seal.

A sub-air flow passage 737 may be formed in the valve housing 739, and an outlet end and an inlet end of the sub-air flow passage 737 communicate with the first through hole 960F and the second through hole 970F, respectively. In addition, the sub-air flow channel 737 also communicates the inner chamber of the diaphragm with the air outlet portion 920F. As an example, the sub-air flow channel 737 may be formed by a pipe, an inlet end of the pipe may communicate with the second through hole 970F, and an outlet end of the pipe may extend into the cavity of the diaphragm and communicate with the first through hole 960F.

The valve cover 720 can be a pressing plate as shown in FIG. 7C, and can open the sub-air flow channel 737 through the driving of the throttle valve plate 930F, and the return member 724 can use the restoring force to restore the valve cover 720 to the original position (that is, close the sub-airflow channel 737). Inlet end of airflow channel 737).

As mentioned above, the inlet end of the sub-airflow passage 737 communicates with the second through hole 970F of the throttle valve 900F (for example, the second through hole 970F of the throttle valve 900F can be used as the inlet end of the pressure passage 722), and the outlet end of the pressure passage 722 It communicates with the inner cavity of the diaphragm of the sub-valve body 730 . Therefore, the sub-airflow channel 737 can be used to communicate the air outlet portion 920F with the diaphragm inner cavity of the sub-valve body 730, so that the air pressure in the air outlet portion 920F can be used to rapidly reduce the air pressure in the diaphragm inner cavity under certain circumstances. , thereby moving the diaphragm away from the end of the valve inner ring 731 , resulting in communication between the air inlet portion 910F of the throttle valve and the pressure relief outlet 736 .

As an example, the diameter D of the inlet end of the sub-airflow channel 737 (or the second through hole 970F) can be made much larger than the diameter d of the diaphragm opening 735, for example, D≧3d. As an example, d=1mm, D=3mm. Since the area of the diaphragm opening 735 is much smaller than the area of the inlet end of the sub-airflow passage 737, when the valve cover 720 rotates to open the inlet end of the sub-airflow passage 737, the pressure in the inner cavity of the diaphragm will quickly approach the air of the throttle valve 900F Intake air pressure (throttle plate downstream pressure) in outlet portion 920F, thereby causing diaphragm 33 to move away from the end of valve inner ring 731 , places air inlet portion 910F in communication with pressure relief outlet 736 .

The valve cover 720 can be provided with a protrusion, and when the valve cover 720 is in the first position, the protrusion can block the inlet end of the sub-air flow passage 737, and when the pressure plate 721 is in the second position, the protrusion can be connected with the sub-air flow. The inlet ends of the passage 737 are separated to allow passage of air in the air outlet portion 920F of the throttle valve 900F into the sub airflow passage 737 . Alternatively, the inlet end of the sub-airflow passage 737 can also be provided with a flange, and a recess is formed on the valve cover 720, and the flange of the inlet end of the sub-airflow passage 737 cooperates with the recess of the valve cover 720 to form a sealing area, thereby being able to Better sealing of the inlet end of the sub-airflow channel.

In addition, one end of the valve cover 720 may abut/contact the throttle plate 930F, while the other end of the valve cover 720 may rotate, for example, about its axis of rotation, so that when the throttle plate 930F rotates in one direction (eg, counterclockwise), , the throttle valve plate 930F can push the valve cover 720 to rotate counterclockwise around its rotation axis (for example, can rotate to the above-mentioned second position), so that the concave part of the valve cover 720 is separated from the flange of the inlet end of the sub-airflow passage 737 to open Sub-airflow channel 737.

The return member 724 is used to provide a restoring force for the valve cover 720 to return to the original position. As an example, the return member 724 may be a preloaded spring, and one end of the return member 724 may be connected to the valve cover 720 and the other end of the return member 724 may be fixed to the valve housing 739 .

Referring to FIG. 7B and FIG. 7D , different working states of the integrated throttle assembly in Example 6 are shown respectively.

Referring to FIG. 7B , the throttle valve 900F is in a normal working state, and the throttle valve plate 930F can be rotated clockwise by a predetermined angle according to the needs of the driver/vehicle to allow different amounts of intake air to enter the intake manifold of the engine. At this time, the valve cover 720 of the RCV valve 700 is always in a closed state under the action of the return member 724, so that the concave portion on the valve cover 720 is always blocked on the flange of the sub-air flow channel 737. Since the inner ring 731 of the valve and the outer ring 732 of the valve are connected with the turbocharger and any pipeline before it through the pressure relief outlet 736, the pressure here is always the pre-pressure pressure. The pressure upstream of the throttle plate 930F through the diaphragm opening 735 equalizes the pressure in the diaphragm cavity of the diaphragm with the pre-pressure pressure (ie, boost pressure). Therefore, the diaphragm of the RCV valve 700 always presses the diaphragm part between the valve inner ring 731 and the valve outer ring 732 under the action of the pressurized air from the diaphragm opening 735 and the pre-tightening member 734, so that the valve inner ring 731 and the valve outer ring 732 are sealed or not communicated with each other.

Referring to FIG. 7E , when the opening of the throttle valve 900F is suddenly and greatly reduced, for example, during sudden braking, the pressure of the air inlet portion 910F is greater than the pressure of the air outlet portion 920F. At this time, the throttle valve plate 930F can be rotated counterclockwise by a predetermined small angle, and the valve cover 720 of the RCV valve 700 can be pushed away by the throttle valve plate 930F, so that the concave part of the valve cover 720 is separated from the flange on the inlet end of the sub-airflow channel 737 to open the sub-airflow channel 737. When the sub-airflow passage 737 is opened, the pressure in the diaphragm cavity will drop rapidly to close to the intake pressure in the air outlet portion 920F of the throttle valve 900F.

At this time, since the throttle valve plate 930F rotates counterclockwise at a small angle, the intake air pressure in the air outlet portion 920F is very small, resulting in pressure imbalance on both sides of the diaphragm, and the air from the air inlet portion 910F of the throttle valve 900F increases. The compressed air makes the diaphragm overcome the pre-tightening force of the pre-tightening member 734, and the diaphragm leaves the second end of the valve inner ring 731, thereby opening the pressure relief channel and the pressure relief chamber, and then the inside of the valve inner ring 731 of the RCV valve 700 It communicates with the pressure relief chamber between the valve outer ring 732, thereby allowing the air with pressurized pressure from the air inlet portion 910F to pass through the gap (pressure relief chamber) between the valve inner ring 731 and the valve outer ring 732 and the pressure relief outlet 736 Return to any line preceding the compressor of the turbocharger. In the above manner, the high pressure of the air in the air inlet portion 910F of the throttle valve 900F can be released to avoid damage to the turbocharger.

It should be noted that the angle by which the throttle plate 930F turns counterclockwise. Assume that when the throttle valve 900F is working normally (throttle valve plate 930F rotates clockwise), the opening angle of the throttle valve plate 930F at idle speed is 5°, then when it rotates counterclockwise to open the sub-air flow channel 737 of the RCV valve 700, the opening angle of the throttle valve plate 930F is counterclockwise The rotation angle should be slightly larger than 5°, for example, smaller than 10°, so as to ensure that the air flow passing through the throttle valve plate 930F can make the engine idle normally without causing excessively high idle speed.

Example 7: Throttle integrated RCV valve)

Example 7 of the integrated throttle assembly according to some embodiments of the present disclosure will be described in detail below with reference to FIGS. 8A to 8C .

The integrated throttle valve assembly in Example 7 may include a throttle valve 900H and an RCV valve 700H integrated into the throttle valve 900H, and in FIGS. Omitted for ease of illustration of components provided in the throttle valve 900H and the RCV valve 700H.

Throttle valve 900H (main valve assembly)

Referring to FIGS. 8A to 8C , the throttle valve 900H may include a main valve body (throttle valve body) 901H and a throttle valve plate 930H provided in the main valve body 901H, and the throttle valve plate 930H divides the throttle valve 900H into an air inlet portion 910H and an air inlet portion 910H. Air outlet portion 920H. The throttle plate 930H is rotatably mounted in the main valve body 901H via a throttle plate shaft 940H. The first end of the throttle plate rotating shaft 940H may protrude outward by a predetermined length relative to the outer wall of the main valve body 901H, and the second end of the throttle plate rotating shaft 940H may be connected to a throttle driver, for example.

In addition, a first through hole 960H may be provided on a side wall of the main valve body 901H forming the air inlet portion 910F, and a second through hole 970H may be provided on a side wall of the main valve body 901H forming the air outlet portion 920H. . That is, the first through hole 960H and the second through hole 970H are located upstream and downstream of the throttle plate 930H, respectively, and the first through hole 960H communicates the air inlet portion 910H of the throttle valve 900H with the outside of the side wall of the main valve body 901H. , the second through hole 970H allows the air outlet portion 920H of the throttle valve 900H to communicate with the outside of the side wall of the main valve body 901H.

RCV valve 700H (sub-valve assembly)

The RCV valve 700H is disposed on the side wall of the throttle valve body 901H, and can be connected with the first end of the throttle valve plate rotating shaft 940H. The RCV valve 700H may include a valve cover 720H and a sub-valve body 730H. The sub-valve body 730H constitutes the main body of the RCV valve 700H and is fixedly connected to the throttle valve 900H, and communicates the first through hole 960H on the air inlet portion 910H with the outside through the sub-airflow channel inside the sub-valve body 730H. The valve cover 720H can be linked with the throttle valve plate rotating shaft 940H, so that the air outlet portion 920H can communicate with the sub-airflow channel inside the sub-valve body 730H. In addition, the valve cover 720H can also separate the air outlet portion 920F and the interior of the sub-valve body 730H from each other under the action of the return member.

The structure of the sub-valve body 730H is similar to that of the sub-valve body 730 of Example 6 above, so the detailed description of the parts with the same structure will be omitted here. The difference from the structure in Example 6 above is that the lower part of the sub-valve body 730H is formed with a bonnet accommodating chamber, and the inlet end of the sub-air flow passage 737 and the bonnet 720H are both arranged in the bonnet accommodating chamber, and the bonnet accommodating chamber has It faces the opening of the throttle valve body 901H and communicates with the second through hole 970H.

The RCV valve 700H may also include a valve cover driver 950H for driving the valve cover 720H open. The valve cover driving member 950H is arranged in the valve cover accommodating cavity, and can move under the drive of the throttle valve plate rotating shaft 940H. The bonnet 720H can be driven by the bonnet driving member 950H to link with the throttle valve plate rotating shaft 940H to open the sub-airflow passage 737 of the sub-valve body 730H, so that the sub-airflow passage 737 passes through the second through hole 970H and the air outlet part 920H connected. In addition, the valve cover 720H can also close the sub-air flow channel 737 under the restoring force of the return member 724H.

The bonnet driver 950H may be formed in a single plate shape, and may include an insertion part 951H and an extension part 952H extending from the insertion part 951H. One side of the inserting portion 951H can be inserted into the inserting groove 941H formed at the first end of the throttle plate shaft 940H, and the extension portion 952H can extend from the other side of the inserting portion 951H to the valve cover 720H. The valve cover 720H is generally formed in a plate shape, and the surface of the valve cover 720H may extend along the radial direction of the throttle plate rotating shaft 940H and be parallel to the axis of the throttle plate rotating shaft 940H. In the radial direction of the throttle valve plate rotating shaft 940H, the extension part 952H can have an overlapping part with the valve cover 720H, and the overlapping part of the extension part 952H can be in contact with the valve cover 720H, which can be used to drive the valve cover 720H to open the sub-airflow passage 737. Therefore, the valve cover driver 950H rotates with the rotation of the throttle plate shaft 940H, and the valve cover 720H can be pushed by the overlapping portion between the extension portion 952H and the valve cover 720H to open the sub-airflow passage 737 .

The valve cover 720H may also be connected to a return member 724H, which may be a return spring or the like. One end of the return member 724H may be fixedly connected (eg, fixedly connected to the sub-valve body), and the other end of the return member 724H may be connected to the bonnet 720H and may apply a restoring force to the bonnet 720H so that the bonnet 720H remains in the Close the position of the sub air flow channel 737. As an example, a connecting block 741H may be provided on the sub-valve body 730H near the sub-air flow channel 737 (for example, the connecting block 741H may extend from the side wall of the sub-air flow channel 737 toward the throttle valve plate rotating shaft 940H), and the return member 724H The connection block 741H and the valve cover 720H are elastically connected together. The return member 724H may be a coil spring and may be in a stretched state, so as to have a restoring force to make the valve cover 720H press against the inlet of the sub-airflow channel 737 .

In addition, a guide member for guiding the movement of the valve cover 720H may also be provided on the sub-valve body 730H, so as to improve the stability of the movement of the valve cover 720H. For example, a guide groove can be formed on the sub-valve body 730H, and a guide protrusion can be provided on the valve cover 720H, and the movement of the valve cover 720H can be guided through the cooperation of the guide groove and the guide protrusion, so that the The deflection occurs when the sub-airflow channels 737 are formed, and the movement resistance is reduced at the same time.

Referring to FIGS. 8A and 8C , different operating states of the integrated throttle assembly in Example 7 are shown.

Referring to Fig. 8A, the throttle valve 900F is in a normal working state, and the throttle valve plate 930F can be rotated by a predetermined angle in a first direction (for example, clockwise direction) according to the driver/vehicle demand, so as to allow different amounts of intake air to enter the intake air of the engine. in the manifold. At this time, since the valve cover driving part 950H is spaced apart from the connecting block 741H in the length direction of the throttle valve plate rotating shaft 940H, during the process of the throttle valve plate rotating shaft 940H rotating along the first direction, the valve cover driving part 950H The movement path is not interfered by the connection block 741H or the sub-valve body, so that the bonnet driver 950H can rotate in the first direction (eg, clockwise direction) as the throttle valve plate rotation shaft 940H rotates.

The valve cover 720H is always in a closed state under the action of the return member 724H. Since the inner ring 731 of the valve and the outer ring 732 of the valve are connected with the turbocharger and any pipeline before it through the pressure relief outlet 736, the pressure here is always the pre-pressure pressure. The pressure upstream of the throttle plate 930F through the diaphragm opening 735 equalizes the pressure in the diaphragm cavity of the diaphragm with the pre-pressure pressure (ie, boost pressure). Therefore, the diaphragm of the RCV valve 700 always presses the diaphragm part between the valve inner ring 731 and the valve outer ring 732 under the action of the pressurized air from the diaphragm opening 735 and the pre-tightening member 734, so that the valve inner ring 731 and the valve outer ring 732 are sealed or not communicated with each other.

Referring to FIG. 8C, when the opening of the throttle valve 900H is suddenly and greatly reduced, for example, during sudden braking, the pressure of the air inlet portion 910H is greater than the pressure of the air outlet portion 920H. At this time, the throttle valve plate 930H can be rotated by a predetermined small angle in a second direction (for example, counterclockwise) opposite to the first direction, and the valve cover driver 950H will push the valve cover 720H, thereby pushing open the valve of the RCV valve 700H. The cover 720H, so that the valve cover 720H can overcome the restoring force of the return member 724H and open the sub-air flow channel 737 . When the sub-air flow passage 737 is opened, the pressure in the diaphragm cavity will drop rapidly to close to the intake pressure in the air outlet portion 920H of the throttle valve 900H.

Example 8: Throttle Integrated RCV Valve

Example 8 of the integrated throttle assembly according to some embodiments of the present disclosure will be described in detail below with reference to FIGS. 9A to 9C .

The integrated throttle assembly in Example 8 may include a throttle valve 900G and an RCV valve 800 integrated into the throttle valve 900G, and in FIGS. Components provided in throttle valve 900G are shown.

Throttle valve 900G (main valve assembly)

Referring to FIG. 9A , the throttle valve 900G may include a main valve body 901G and a throttle valve plate 930G disposed in the main valve body 901G, and the throttle valve plate 930G is installed in the main valve body 901G through a throttle valve plate rotating shaft 940G. The throttle valve plate 930G divides the throttle valve 900G into an air inlet portion 910G and an air outlet portion 920G, and the throttle valve plate rotating shaft 940G can be driven to rotate by a throttle driver (for example, a drive motor, etc.), thereby synchronizing with the throttle valve plate rotating shaft 940G The moving throttle plate 930G can regulate the amount of air entering the air outlet portion 920G from the air inlet portion 910G.

As an example, as shown in FIG. 9B, when the engine has an air intake demand, the throttle driver can rotate the throttle valve plate rotating shaft 940G by a certain angle in a certain direction (for example, clockwise) according to the air intake demand, so as to open the throttle valve. The gate valve plate 930G, so that the pure air introduced into the air inlet portion 910G of the throttle valve 900G can enter the air outlet portion 920G through the opening angle of the throttle valve plate 930G.

In addition, referring to FIG. 9C , a first through hole 960G may be provided on the side wall of the main valve body 901G corresponding to the air inlet portion 910G. external connectivity.

RCV valve 800 (sub-valve assembly)

Referring to FIG. 9A , the RCV valve 800 may include a sub valve body 810 and a valve cover 820 . One end of the sub-valve body 810 can be connected to, for example, the pipeline 101 between the filter 100 and the compressor 102, so as to communicate with unpressurized air. The other end of the sub-valve body 810 may be connected to a valve cover 820 which may be located in an air inlet portion 910G of the throttle valve 900G. Specifically, one end of the RCV valve 800 protrudes into the air inlet portion 910G through the first through hole 960G provided on the side wall of the air inlet portion 910G of the throttle valve 900G. The valve cover 820 can have different movement displacements relative to the sub-valve body 810 through the actuation of the throttle valve plate 930G, so as to open the airflow passage of the RCV valve 800 . In addition, the valve cover 820 can also be restored to an initial position by a return member (eg, an elastic element, a damper, etc.), so as to close the airflow channel of the RCV valve 800 .

The sub-valve body 810 is fixed to, for example, the intake pipe 101 in FIG. A controlled opening 816 may be formed on the sub-valve body 810 . The sub-valve body 810 may have a pipe shape, a barrel shape, or other shapes.

The bonnet 820 may be disposed on the sub-valve body 810 and may slide relative to the sub-valve body 810. As an example, a guide member (for example, a guide pin and a slide groove) cooperating with each other may be provided on the bonnet 820 and the sub-valve body 810, to realize the relative movement of the two. The valve cover 820 may include a protrusion 821 and a control opening 826 . The protrusion 821 can protrude into the throttle valve 900G and contact the throttle valve plate 930G to be driven by the throttle valve plate 930G, so that the valve cover 820 opens the controlled opening 816 of the sub-valve body 810 .

Specifically, the protrusion 821 can be driven by the throttle valve plate 930G to drive the valve cover 820 from a position where its control opening 826 does not overlap the controlled opening 816 of the sub-valve body 810 at all (ie, the RCV valve 800 is closed) to its position. The position where the control opening 826 at least partially overlaps the controlled opening 816 (ie, the RCV valve 800 is open). As an example, the controlled opening 816 and the control opening 826 can have the same shape and size, and the controlled opening 816 can completely overlap the control opening 826 when the valve cover 820 is driven to a predetermined position. However, the present disclosure is not limited thereto, and the controlled opening 816 and the control opening 826 can also be formed to have different shapes and/or sizes as required, and the stroke of the valve cover 820 can be designed as required to accommodate the difference of the throttle valve plate 930G. driving angle.

9B and 9C show different working states of the integrated throttle assembly in Example 8, respectively.

Referring to FIG. 9B , the throttle valve 900G is in a normal working state, and the throttle valve plate 930G can be controlled to rotate a predetermined angle in the first direction (for example, clockwise) according to the driver/vehicle demand, so as to allow different amounts of intake air to enter the engine. in the intake manifold. At this time, the RCV valve 800 can always maintain a closed state under the restoring force of the elastic element (not shown).

Referring to FIG. 9C , when the opening of the throttle valve 900G suddenly decreases greatly, the throttle valve plate 930G can be rotated by a predetermined small angle in a second direction (for example, counterclockwise) opposite to the first direction, and the throttle valve plate 930G can overcome the The restoring force of the elastic element drives the protrusion 821 of the valve cover 820 and makes the valve cover 820 slide on the sub-valve body 810, so that the valve cover 820 slides from the position where the controlled opening 816 and the control opening 826 on the sub-valve body 810 are completely staggered. To a position where the controlled opening 816 at least partially overlaps the control opening 826 (eg, slide to a position where the controlled opening 816 fully overlaps the control opening 826 ) causes the RCV valve 800 to open. At this time, air at boost pressure from the air inlet portion 910G is allowed to return to any line preceding the compressor of the turbocharger via the overlapping area between the controlled opening 816 and the control opening 826 .

Note the angle by which throttle plate 930G is rotated in the second direction. Assuming that the throttle valve 900G works normally (throttle valve plate 930G rotates clockwise), and the opening angle of the throttle valve plate 930G at idle speed is 5°, then when it rotates counterclockwise to open the control opening 826 of the RCV valve 800, it rotates counterclockwise The angle should be slightly greater than 5° (for example, less than 10°), so as to ensure that the air flow through the throttle valve plate 930G can make the engine idle normally without causing excessively high idle speed.

Although only a single sub-valve assembly (i.e., only an EGR valve or only an RCV valve) is integrated in the integrated throttle assembly described above, the present disclosure is not limited thereto, and an EGR valve and an EGR valve can also be integrated on the throttle as required. RCV valve both.

As an example, an integrated throttle assembly may include a throttle, a first sub-valve assembly, and a second sub-valve assembly. Similar to the throttle valves in Examples 1 to 8 above, the throttle valve may include a main valve body forming a main air flow passage and a throttle valve plate rotatably arranged in the main valve body, and the throttle valve plate divides the main valve body into an air inlet part and air outlet part.

The first sub-valve assembly may be disposed on the side wall of the main valve body corresponding to the air outlet portion, and may have a first sub-airflow passage and a first valve cover, the first sub-airflow passage communicates with the air outlet portion of the throttle valve , the first valve cover can be linked with the throttle valve plate to control the opening degree of the first sub-airflow channel of the first sub-valve assembly. For example, the first sub-valve assembly may be an EGR valve according to the above examples.

The second sub-valve assembly may be disposed on the side wall of the main valve body corresponding to the air inlet portion, and may have a second sub-airflow passage and a second valve cover, the second sub-airflow passage communicates with the air inlet portion of the throttle valve , the second valve cover can be linked with the throttle valve plate to control the opening degree of the second sub-airflow channel of the second sub-valve assembly. For example, the second sub-valve assembly may be the RVC valve in the example above.

Engine Module with Integrated Throttle Assembly

The present disclosure also provides an engine module having an integrated throttle assembly integrated with an EGR valve according to the above example, and the engine module may further include an intake line and an exhaust line.

The air intake line can connect the air outlet portion of the throttle valve and the engine to supply clean air to the engine. An exhaust line connects the engine and the sub-body of the integrated throttle assembly to send a portion of engine exhaust gas into the sub-body to return through the integrated throttle assembly into the air outlet portion of the throttle.

As an example, referring again to FIG. 1 , an integrated throttle assembly with an integrated EGR valve according to the examples described above may be used to replace both throttle valve 107 and EGR valve 114 in FIG. 1 .

The present disclosure also provides an engine module having an integrated throttle assembly integrated with an RCV valve according to the above example, and the engine module may further include an intake pipeline, an exhaust pipeline and a turbocharger.

The intake line is connected to the air inlet portion of the throttle valve to send clean air into the throttle valve, and the exhaust line is connected to the engine and turbocharger. Similar to the turbocharger shown in Figure 1, the turbocharger may include a compressor and a turbine, and the turbine uses the engine exhaust in the exhaust pipeline to perform work to drive the compressor to work. The clean air from the filter is further compressed and sent to the intake line.

As an example, the pressure relief outlet of the integrated throttle assembly according to the above examples 6 and 7 and the sub-valve body of the integrated throttle assembly in example 8 can communicate with the intake pipe after the filter and before the compressor, And it can also communicate with the air inlet portion of the throttle valve, so as to selectively connect the air inlet portion of the throttle valve with the intake pipe after the filter and before the compressor.

As an example, an integrated throttle assembly incorporating an RCV valve according to the examples described above may be used to replace both throttle valve 107 and RCV valve 106 in FIG. 1 .

According to another aspect, the present disclosure also provides an engine module having an integrated throttle assembly integrating both the EGR valve and the RCV valve, the engine module may further include an intake line, an exhaust line, and a turbocharger.

The intake line is connected to the air inlet part of the throttle valve to send clean air into the throttle valve, and the intake line is also connected to the air outlet part of the throttle valve and the engine to send clean air into the engine.

The exhaust line connects the engine and the turbocharger. Similar to the turbocharger shown in Figure 1, the turbocharger may include a compressor and a turbine, and the turbine uses the engine exhaust in the exhaust pipeline to perform work to drive the compressor to work. The clean air from the filter is further compressed and sent to the intake line.

The exhaust line can also connect the engine and the first sub-valve assembly of the integrated throttle assembly to send a portion of the engine exhaust gas into the first sub-valve assembly to return to the air outlet of the throttle through the first sub-valve assembly Ministry. In addition, a second sub-valve assembly may communicate with the intake line after the filter and before the compressor, and may also communicate with the air inlet portion of the throttle to selectively connect the air inlet portion of the throttle with the filter. Then it communicates with the intake pipeline before the compressor.

As an example, referring again to FIG. 1 , an integrated throttle assembly that integrates both the EGR valve and the RCV valve may be used to replace all three throttle valve 107 , EGR valve 114 , and RCV valve 106 in FIG. 1 .

A number of examples of the present disclosure have been described above with reference to the accompanying drawings, but the solution of the present disclosure is not limited thereto, components in each example can be combined with each other to form a new example, all within the disclosure scope of the present disclosure.

According to some embodiments of the present disclosure, there is provided an integrated throttle assembly, including: a throttle, the throttle includes a main valve body formed with a main air flow passage and a throttle valve plate rotatably arranged in the main valve body , the throttle valve plate divides the main valve body into an air inlet part and an air outlet part; a sub-valve assembly is formed with a sub-air flow channel, and the sub-valve assembly includes a valve cover, and the valve cover can be connected with the throttle The gate valve slices are linked to control the opening degree of the sub-airflow channels of the sub-valve assembly.

According to some embodiments of the present disclosure, the sub-valve assembly includes a sub-valve body, on which a controlled opening for communicating the sub-air flow channel in the sub-valve body with the outside is formed, and when the valve cover is opposite to the When the sub-valve moves, it can open or close the controlled opening.

According to some embodiments of the present disclosure, the sub-valve assembly further includes a return member for exerting a force to make the valve cover close the controlled opening of the sub-valve body, the return member is connected to the valve between the cover and the sub-valve body, or between the valve cover and the main valve body.

According to some embodiments of the present disclosure, a first through hole is formed on the side wall forming the air outlet portion or the side wall forming the air inlet portion of the main valve body, and the controlled The opening communicates with the interior of the main valve body through the first through hole, and the valve cover is at least partially disposed inside the main valve body.

According to some embodiments of the present disclosure, the main valve body is in the shape of a cylinder with both ends open, and the throttle valve further includes a throttle valve plate rotating shaft arranged in the main valve body, and the throttle valve plate rotating shaft is installed vertically In the main air flow channel of the main valve body, the throttle valve plate is rotatably connected to the main valve body through the valve plate rotating shaft, and the throttle valve also includes a valve for driving the valve cover A cover driving part, the valve cover driving part is connected with the throttle valve plate and drives the valve cover to move relative to the sub-valve body, wherein the valve cover driving part is a cam, and the cam is fixedly connected to the On the throttle valve plate, the cam has a curved outer profile, and presses the valve cover through the outer profile.

According to some embodiments of the present disclosure, the sub-valve body includes a base plate and a pressure plate, the valve cover is movably arranged between the base plate and the pressure plate, and the controlled opening is formed on the On the base plate, a control opening is formed on the valve cover, and a pressure plate opening is provided on the pressure plate, and the pressure plate opening can fully expose the controlled opening, and as the valve cover is relatively to the sub With the movement of the valve body, the control opening and the controlled opening completely overlap, partially overlap or completely stagger.

According to some embodiments of the present disclosure, the control opening includes a plurality of sub-control openings, the plurality of sub-control openings are arranged at intervals in the moving direction of the valve cover, the controlled opening includes a plurality of sub-controlled openings, the The plurality of sub-control openings correspond to the plurality of sub-controlled openings one-to-one and can completely overlap and partially overlap with the plurality of sub-controlled openings as the valve cover moves relative to the sub-valve body. overlap or completely stagger.

According to some embodiments of the present disclosure, a guide groove for guiding the movement of the valve cover is provided on the base plate, and the return member is a return spring provided on both sides of the sub-valve assembly, so One end of the return member is connected to extension arms extending from both sides of the valve cover, and the other end of the return member is connected to support arms extending from both sides of the base plate.

According to some embodiments of the present disclosure, the sub-valve body has a cylindrical structure, the controlled opening is formed on one end side wall of the sub-valve body, and the other end of the sub-valve body forms the sub-airflow The entrance and exit of the channel; the valve cover includes a valve stem and a valve, one end of the valve stem can receive the extrusion of the outer profile of the cam, and the other end of the valve stem extends into the sub-valve body and is connected to the A valve, the valve blocks the controlled opening or opens the controlled opening from inside the sub-valve body according to the movement of the valve stem.

According to some embodiments of the present disclosure, the integrated throttle assembly further includes a drag reducing member connected to one end of the valve cover, the drag reducing member is in rolling contact with the cam, and the drag reducing member is a roller or a roller A needle bearing, the cam is in the shape of a meniscus, is arranged around the rotation axis of the valve plate and has a radius that varies relative to the rotation axis of the valve plate.

According to some embodiments of the present disclosure, a controlled opening is formed on the side wall of the main valve body forming the air outlet portion, and the controlled opening forms the sub-airflow channel or communicates with the sub-airflow channel , the valve cover includes an arc-shaped plate on which a control opening is formed, one end of the arc-shaped plate is connected to the throttle valve plate, and as the throttle valve plate rotates, the arc-shaped plate The control opening on the plate completely overlaps, partially overlaps or completely staggers with the controlled opening, so as to control the opening degree of the controlled opening.

According to some embodiments of the present disclosure, the valve cover further includes two fan-shaped side plates connected on both sides of the arc-shaped plate to form a fan-shaped box structure, and one end of the two fan-shaped side plates and one end of the arc-shaped plate One end is fixedly connected to the throttle valve plate, and the other end of the two fan-shaped side plates and the other end of the arc-shaped plate form the inlet and outlet of the airflow channel of the sub-valve assembly.

According to some embodiments of the present disclosure, the main valve body is a cylinder with openings at both ends, and the throttle valve further includes a throttle valve plate rotating shaft arranged in the main valve body, and the throttle valve plate rotating shaft is installed vertically In the main airflow passage of the main valve body, the throttle valve plate is rotatably connected to the main airflow passage through the valve plate rotating shaft, and the integrated throttle assembly also includes One end of the rotating shaft integrally extends to the extension shaft outside the main valve body, the sub-valve body is fixedly arranged on the outside of the main valve body, the valve cover is connected to the extension shaft, and along with the throttle valve The rotation of the blade rotating shaft opens or closes the sub-airflow channels.

According to some embodiments of the present disclosure, the sub-valve assembly has one of the following structures: both the sub-valve body and the valve cover are cylinders with openings at both ends, and the sub-valve body is sleeved on the The outside of the bonnet, or the bonnet is sleeved on the outside of the sub-valve body, one end of the sub-valve body is fixed and sealed to the side wall of the main valve body, and the side wall of the cylinder of the bonnet A control opening is formed on the cylinder side wall of the sub-valve body, and a controlled opening communicating with the sub-airflow channel is formed on the side wall of the cylinder of the sub-valve body. As the extension shaft rotates, the control opening is completely connected to the controlled opening. Staggered, partially overlapped or completely overlapped; the sub-valve body is a cylinder with open ends, arranged in parallel with the cylinder of the main valve body, and the extension axis extends to the inside of the cylinder of the sub-valve body, so The valve cover is a plate-shaped valve plate, which is fixedly connected to the extension shaft to open or close the sub-air flow channel.

According to some embodiments of the present disclosure, the sub-valve body is connected to the outer wall of the main valve body, a first through hole is formed on the side wall of the main valve body forming the air inlet portion, and A second through hole is formed on the side wall of the main valve body forming the air outlet portion, and the sub-airflow channel is formed in the sub-valve body, and the outlet end and the inlet end of the sub-airflow channel are respectively connected to the The first through hole communicates with the second through hole; the valve cover is arranged at a position corresponding to the second through hole, and selectively opens or closes the inlet end of the sub-air flow channel, wherein the The sub-valve body is also provided with a pressure relief passage communicating with the outside and a pressure relief passage control valve plate, the pressure relief passage control valve plate selectively separates or communicates the pressure relief passage with the sub-air flow passage, wherein, The inlet end of the sub-airflow channel forms the controlled opening of the sub-valve body, the controlled opening communicates with the air outlet part through the second through hole, and the valve cover is connected to the throttle valve plate. linkage to open or close the controlled opening.

According to some embodiments of the present disclosure, the sub-valve body further includes a valve housing, a pre-tensioning member disposed inside the valve housing, and a valve inner ring and a valve outer ring located between the pre-tensioning member and the main valve body; The pressure relief channel is formed in the valve housing and includes a pressure relief cavity and a pressure relief outlet, the first end of the inner ring of the valve and the first end of the outer ring of the valve are connected to the side wall of the main valve body, And the first end of the inner ring of the valve communicates with the first through hole, the outer ring of the valve is sleeved on the outer side of the inner ring of the valve and is separated from the inner ring of the valve by a predetermined gap to form the pressure relief chamber, And the pressure relief outlet is formed on the outer wall of the outer ring of the valve; the control valve plate of the pressure relief channel is a diaphragm, and the diaphragm is arranged between the pre-tensioning member and the second end of the inner ring of the valve Between the valve housing and the diaphragm, a diaphragm inner chamber is formed, the outlet end of the sub-air flow channel communicates with the diaphragm inner chamber, and the diaphragm leans against the valve through a pre-tensioning member. On the second end of the inner ring, so that the inner ring of the valve and the pressure relief chamber are sealed from each other, the diaphragm opening formed on the diaphragm communicates both sides of the diaphragm to allow the air entering the air inlet part to pass through the first The through hole, the interior of the valve inner ring and the diaphragm opening fill the diaphragm cavity.

According to some embodiments of the present disclosure, the valve cover is pivotally connected to the main valve body and is at least partially located in the air outlet portion, when the throttle valve plate is rotated in the first direction from the throttle closed position by a predetermined amount. Angle, the valve cover part is driven by the throttle valve plate, so that the valve cover opens the controlled opening of the sub-valve body, and when the throttle valve plate moves from the throttle closed position to the second direction opposite to the first direction When rotating in the direction, the valve cover closes the controlled opening of the sub-valve body, the valve cover is a pressure plate, the pressure plate is arranged in the air outlet part, and covers the inlet end of the sub-air flow channel, so The return member is connected between the sub-valve body and the pressure plate, the pressure plate is provided with a sealing area, when the pressure plate is driven by the throttle valve plate to push the pressure plate, the sealing area and the inlet end of the sub-air flow separate to open the sub-airflow channel, and when the pressure plate returns to the original position by the return member, the sealing area blocks the inlet end of the sub-airflow channel.

According to some embodiments of the present disclosure, a valve cover housing cavity is formed on the valve housing, and the valve cover is movably arranged on the valve housing and extends into the valve cover housing cavity. The inlet end of the air flow channel and the bonnet are all arranged in the bonnet accommodating cavity, the bonnet accommodating cavity has an opening towards the throttle valve body and communicates with the second through hole, and the throttle valve plate rotating shaft has a The extension end in the bonnet accommodating cavity, the sub-valve assembly also includes a bonnet driving member arranged on the extension end, when the throttle valve plate rotating shaft rotates in the first direction, the bonnet driving member and the The valve cover contacts and pushes the valve cover to open the inlet end of the sub-airflow passage, and when the throttle valve plate rotating shaft rotates in the second direction opposite to the first direction, the valve cover is in the position of the return member. The inlet end of the sub-airflow channel is covered under the restoring force.

According to some embodiments of the present disclosure, the first through hole is disposed on the side wall of the main valve body forming the air inlet portion, the valve cover is provided with a protrusion and a control opening, and the protrusion passes through the first through hole. A through hole protrudes into the air inlet portion, and when the throttle valve plate rotates in the first direction from the closed position of the throttle valve, the control opening on the valve cover and the empty opening on the sub-valve body interact with each other. Staggered and non-overlapping, when the throttle valve plate is rotated by a predetermined angle in a second direction opposite to the first direction from the closed position of the throttle valve, the throttle valve plate is in contact with the protrusion to push the valve cover to move, thereby Open the charged opening.

According to some embodiments of the present disclosure, the integrated throttle assembly further includes a cooling pipeline connected to the sub-valve assembly, the cooling pipeline includes: an outer pipe having an outer pipe inlet for receiving a cooling medium and The outlet of the outer pipe used to discharge the cooling medium, the inlet and the outlet of the outer pipe are arranged on the side wall of the outer pipe; the inner pipe is sleeved in the outer pipe, and the integrated throttle assembly The sub-airflow channel of the sub-valve body communicates with the bracket, which is arranged between the inner tube and the outer tube to support the inner tube in the outer tube.

According to some embodiments of the present disclosure, the outer pipe has a first outer pipe section, a second outer pipe section and a third outer pipe section, the first outer pipe section and the third outer pipe section are straight pipes formed of metal materials, the second outer pipe section The second outer pipe section is a curved pipeline formed by soft material, and the soft material is rubber.

According to some embodiments of the present disclosure, there are two controlled openings, including a first controlled opening and a second controlled opening, and the integrated throttle assembly further includes a cooling pipeline connected to the sub-valve assembly , There are two cooling pipelines, including a first cooling pipeline and a second cooling pipeline, respectively communicating with the first controlled opening and the second controlled opening.

According to some embodiments of the present disclosure, the sub-valve assembly includes: a first sub-valve assembly having a first sub-air flow channel and disposed on a side wall of the main valve body corresponding to the air outlet portion, the The first sub-airflow channel communicates with the air outlet of the throttle valve; the second sub-valve assembly has a second sub-airflow channel and is arranged on the side wall of the main valve body corresponding to the air inlet, so that The second sub-airflow passage communicates with the air inlet portion of the throttle valve.

According to some embodiments of the present disclosure, the sub-valve assembly is an EGR valve for an engine system.

According to some embodiments of the present disclosure, the sub-valve assembly is an RCV valve of an engine system.

According to some embodiments of the present disclosure, there is provided a vehicle including at least one of the aforementioned EGR valve and RCV valve.

The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present disclosure, unless otherwise specified, "plurality" means two or more.

In the description of the present disclosure, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediary, and it can be the internal communication of two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present disclosure in specific situations.

The features, structures, or characteristics described in this disclosure may be combined in any suitable manner in one or more embodiments. In the description above, numerous specific details were provided in order to give a thorough understanding of embodiments of the present disclosure. However, one skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details, or that other methods, components, materials, etc. may be employed. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the present disclosure.

Industrial Applicability

The integrated throttle assembly provided by the present disclosure integrates at least one of the EGR valve and/or RCV valve into the throttle, and uses the mechanical signal of the throttle to drive, so that the structure can be simplified, Significantly reduce costs and increase the reliability of vehicle operation.

Claims (29)

An integrated throttle assembly comprising: A throttle valve, including a main valve body formed with a main air flow channel and a throttle valve plate rotatably arranged in the main valve body, the throttle valve plate divides the main valve body into an air inlet part and an air outlet part; The sub-valve assembly is formed with a sub-airflow passage, and the sub-valve assembly includes a valve cover, and the valve cover can be linked with the throttle valve plate to control the opening degree of the sub-airflow passage of the sub-valve assembly. The integrated throttle assembly according to claim 1, wherein the sub-valve assembly comprises a sub-valve body, on which a controlled opening for communicating the sub-air flow channel in the sub-valve body with the outside is formed, When the valve cover moves relative to the sub-valve body, the controlled opening can be opened or closed. The integrated throttle assembly according to claim 2, wherein the sub-valve assembly further comprises a return member for exerting a force to make the valve cover close the controlled opening of the sub-valve body, the return A positioning member is connected between the valve cover and the sub-valve body, or between the valve cover and the main valve body. The integrated throttle assembly according to claim 3, wherein a first through hole is formed on the side wall forming the air outlet portion or the side wall forming the air inlet portion of the main valve body, the The controlled opening of the sub-valve body communicates with the interior of the main valve body through the first through hole, and the valve cover is at least partially disposed inside the main valve body. The integrated throttle assembly according to claim 4, wherein the main valve body is in the shape of a cylinder with both ends open, and the throttle valve further includes a throttle valve plate rotating shaft arranged in the main valve body, and the throttle body is The rotating shaft of the gate valve plate is installed perpendicular to the main airflow channel of the main valve body, the throttle valve plate is rotatably connected to the main valve body through the rotating shaft of the valve plate, and the throttle valve also includes a A bonnet driving member for driving the bonnet, the bonnet driving member is connected with the throttle valve plate and drives the bonnet to move relative to the sub-valve body, wherein the bonnet driving member is a cam, The cam is fixedly connected to the throttle valve plate, the cam has a curved outer profile, and presses the valve cover through the outer profile. The integrated throttle assembly according to claim 5, wherein the sub-valve body includes a base plate and a pressure plate, and the valve cover is movably arranged between the base plate and the pressure plate, the The controlled opening is formed on the base plate, the control opening is formed on the valve cover, and a pressure plate opening is provided on the pressure plate, and the pressure plate opening can fully expose the controlled opening, along with the When the valve cover moves relative to the sub-valve body, the control opening and the controlled opening completely overlap, partially overlap or completely stagger. The integrated throttle assembly according to claim 6, wherein the control opening includes a plurality of sub-control openings, the plurality of sub-control openings are arranged at intervals in the moving direction of the valve cover, and the controlled openings include a plurality of sub-control openings. controlled openings, the plurality of sub-control openings correspond to the plurality of controlled openings one-to-one, and as the valve cover moves relative to the sub-valve body, the plurality of sub-control openings and the plurality of sub-controlled openings can be Control openings are completely overlapped, partially overlapped or completely staggered. The integrated throttle assembly according to claim 6, wherein a guide groove for guiding the movement of the valve cover is provided on the base plate, and the return member is provided on the sub-valve assembly. Return springs on both sides, one end of the return member is connected to an extension arm extending from both sides of the valve cover, and the other end of the return member is connected to a support extending from both sides of the base plate arm. The integrated throttle assembly according to claim 5, wherein the sub-valve body has a cylindrical structure, the controlled opening is formed on one end side wall of the sub-valve body, and the sub-valve body The other end forms the entrance and exit of the sub-airflow channel, The valve cover includes a valve stem and a valve, one end of the valve stem can receive the extrusion of the cam, the other end of the valve stem extends into the sub-valve body and is connected to the valve, the The valve blocks the controlled opening or opens the controlled opening from inside the sub-valve body according to the movement of the valve stem. The integrated throttle assembly according to claim 5, wherein the integrated throttle assembly further comprises a drag reducing member connected to one end of the valve cover, the drag reducing member is in rolling contact with the cam, the The drag reducing member is a roller or a needle bearing, and the cam is in the shape of a meniscus, arranged around the rotation axis of the valve plate and has a radius that changes relative to the rotation axis of the valve plate. The integrated throttle assembly according to claim 1, wherein a controlled opening is formed on the side wall of the main valve body forming the air outlet portion, and the controlled opening forms the sub-airflow channel or In communication with the sub-airflow channel, the valve cover includes an arc-shaped plate on which a control opening is formed, and one end of the arc-shaped plate is connected to the throttle valve plate, and the throttle valve plate Rotation, the control opening on the arc-shaped plate completely overlaps, partially overlaps or completely staggers with the controlled opening, thereby controlling the opening of the controlled opening. The integrated throttle assembly according to claim 11, wherein the valve cover further comprises two fan-shaped side plates connected on both sides of the arc-shaped plate, thereby forming a fan-shaped box structure, one end of the two fan-shaped side plates And one end of the arc-shaped plate is fixedly connected to the throttle valve plate, and the other ends of the two fan-shaped side plates and the other end of the arc-shaped plate form the inlet and outlet of the air flow channel of the sub-valve assembly. The integrated throttle assembly according to claim 2, wherein the main valve body is a cylindrical body with openings at both ends, and the throttle valve further includes a throttle valve plate rotating shaft arranged in the main valve body, and the throttle body The shaft of the valve plate is installed perpendicular to the main air flow channel of the main valve body, the throttle valve plate is rotatably connected to the main air flow channel through the shaft of the valve plate, and the integrated throttle assembly is also It includes an extension shaft integrally extending from one end of the throttle valve plate shaft to the outside of the main valve body, the sub-valve body is fixedly arranged outside the main valve body, and the valve cover is connected to the extension shaft , to open or close the sub-air flow channel with the rotation of the throttle valve plate rotation shaft. The integrated throttle assembly according to claim 13, wherein the sub-valve assembly has one of the following structures: Both the sub-valve body and the valve cover are cylinders with openings at both ends, the sub-valve body is sleeved outside the valve cover, or the valve cover is sleeved outside the sub-valve body, the One end of the sub-valve body is fixed and sealed to the side wall of the main valve body, a control opening is formed on the side wall of the cylinder body of the valve cover, and a control opening is formed on the side wall of the cylinder body of the sub-valve body. The controlled opening communicated with the sub-airflow channel, as the extension shaft rotates, the controlled opening is completely staggered, partially overlapped or completely overlapped with the controlled opening; The sub-valve body is a cylinder with openings at both ends, arranged parallel to the cylinder of the main valve body, the extension shaft extends to the inside of the cylinder of the sub-valve body, and the valve cover is a sheet valve , fixedly connected to the extension shaft, to open or close the sub-air flow channel. The integrated throttle assembly according to claim 3, wherein the sub-valve body is connected to an outer side wall of the main valve body, and is formed on a side wall of the main valve body forming the air inlet portion. There is a first through hole, a second through hole is formed on the side wall of the main valve body forming the air outlet portion, the sub-airflow channel is formed in the sub-valve body, and the outlet of the sub-airflow channel end and the inlet end communicate with the first through hole and the second through hole respectively, The valve cover is arranged at a position corresponding to the second through hole, and selectively opens or closes the inlet end of the sub-air flow channel, wherein a pressure relief channel communicating with the outside is also provided in the sub-valve body and a pressure relief channel control valve plate, the pressure relief channel control valve plate selectively separates or communicates the pressure relief channel with the sub-air flow channel, wherein the inlet end of the sub-air flow channel forms the sub-valve body The controlled opening communicates with the air outlet portion through the second through hole, and the valve cover is linked with the throttle valve plate to open or close the controlled opening. The integrated throttle assembly according to claim 15, wherein the sub-valve body further comprises a valve housing, a pre-tension member disposed inside the valve housing, and a valve body located between the pre-tension member and the main valve body ring and valve outer ring, The pressure relief passage is formed in the valve housing and includes a pressure relief cavity and a pressure relief outlet, the first end of the valve inner ring and the first end of the valve outer ring are connected to the side wall of the main valve body , and the first end of the inner ring of the valve communicates with the first through hole, the outer ring of the valve is sleeved outside the inner ring of the valve and is separated from the inner ring of the valve by a predetermined gap to form the pressure relief chamber , and the pressure relief outlet is formed on the outer wall of the outer ring of the valve, The pressure relief channel control valve plate is a diaphragm, and the diaphragm is arranged between the pre-tensioning member and the second end of the inner ring of the valve, and a valve is formed between the valve housing and the diaphragm. Diaphragm inner cavity, the outlet end of the sub-air flow passage communicates with the diaphragm inner cavity, and the diaphragm abuts against the second end of the valve inner ring through the pre-tightening member, so that the valve inner ring and the pressure relief The cavities are sealed to each other, and the diaphragm opening formed on the diaphragm communicates both sides of the diaphragm to allow the air entering the air inlet part to be filled into the diaphragm through the first through hole, the inside of the inner ring of the valve and the diaphragm opening. in the lumen. The integrated throttle assembly of claim 16 , wherein said valve cover is pivotally connected to a main valve body and at least partially positioned within said air outlet portion after said throttle valve plate is closed from a throttle valve. When the position is rotated by a predetermined angle in the first direction, the valve cover part is driven by the throttle valve plate, so that the valve cover opens the controlled opening of the sub-valve body, and when the throttle valve plate moves from the closed position of the throttle valve to the When the second direction opposite to the first direction rotates, the valve cover closes the controlled opening of the sub-valve body, The valve cover is a pressure plate, the pressure plate is arranged in the air outlet part, and covers the inlet end of the sub-airflow passage, the return member is connected between the sub-valve body and the pressure plate, The pressure plate is provided with a sealing area, and when the pressure plate is driven by the throttle valve plate to push the pressure plate, the sealing area is separated from the inlet end of the sub-airflow passage to open the sub-airflow passage, when the pressure plate passes through the return member When returning to the initial position, the sealing area blocks the inlet end of the sub-airflow channel. The integrated throttle assembly according to claim 16, wherein a valve cover housing cavity is formed on the valve housing, and the valve cover is movably arranged on the valve housing and extends into the In the bonnet accommodating cavity, the inlet end of the sub-air flow channel and the bonnet are both arranged in the bonnet accommodating cavity, and the bonnet accommodating cavity has an opening facing the throttle valve body and communicates with the second through hole. The valve plate rotating shaft has an extension end extending into the valve cover accommodating cavity, and the sub-valve assembly further includes a valve cover driving member arranged on the extending end, when the throttle valve plate rotating shaft rotates in the first direction, the The bonnet driving member contacts the bonnet and pushes the bonnet to open the inlet end of the sub-airflow passage, and when the throttle valve plate rotating shaft rotates in a second direction opposite to the first direction, the The valve cover covers the inlet end of the sub-air flow channel under the restoring force of the returning member. The integrated throttle assembly according to claim 4, wherein the first through hole is provided on the side wall of the main valve body forming the air inlet portion, and the valve cover is provided with a protrusion and a control opening, The protrusion protrudes into the air inlet portion through the first through hole, and when the throttle valve plate rotates in the first direction from the throttle closed position, the control opening on the valve cover and the sub-valve The empty openings on the body are staggered and do not overlap each other. When the throttle valve plate rotates at a predetermined angle from the closed position of the throttle valve in the second direction opposite to the first direction, the throttle valve plate contacts the protrusion to push The valve cover moves, thereby opening the controlled opening. The integrated throttle assembly according to any one of claims 1-12, wherein the integrated throttle assembly further comprises a cooling pipeline connected to the sub-valve assembly, the cooling pipeline comprising: an outer pipe having an outer pipe inlet for receiving a cooling medium and an outer pipe outlet for discharging the cooling medium, the outer pipe inlet and the outer pipe outlet being arranged on the side wall of the outer pipe; an inner tube, sleeved in the outer tube, communicated with the sub-airflow channel of the sub-valve body of the integrated throttle assembly, A bracket is arranged between the inner tube and the outer tube to support the inner tube in the outer tube. The integrated throttle assembly according to claim 20, wherein the outer pipe has a first outer pipe section, a second outer pipe section and a third outer pipe section, and the first outer pipe section and the third outer pipe section are formed of a metal material For a straight pipeline, the second outer pipe section is a curved pipeline made of soft material, and the soft material is rubber. The integrated throttle assembly according to any one of claims 2-8, wherein there are two controlled openings, including a first controlled opening and a second controlled opening, and the integrated throttle assembly It also includes cooling pipelines connected to the sub-valve assembly. There are two cooling pipelines, including a first cooling pipeline and a second cooling pipeline, respectively connected to the first controlled opening and the second controlled opening. The opening is connected. The integrated throttle assembly according to any one of claims 1-3, wherein the sub-valve assembly comprises: The first sub-valve assembly has a first sub-airflow channel and is arranged on the side wall of the main valve body corresponding to the air outlet part, and the first sub-airflow channel communicates with the air outlet part of the throttle valve ; The second sub-valve assembly has a second sub-airflow channel and is arranged on the side wall of the main valve body corresponding to the air inlet part, and the second sub-airflow channel communicates with the air inlet part of the throttle valve . The integrated throttle assembly according to any one of claims 1-12, wherein the sub-valve assembly is an EGR valve for an engine system. The integrated throttle assembly according to any one of claims 13-19, wherein the sub-valve assembly is an RCV valve of an engine system. An engine module comprising an engine and an integrated throttle assembly according to claim 24, Wherein, the exhaust pipe of the engine is connected to the sub-valve assembly, so that a part of the exhaust gas of the engine can enter the air outlet portion of the main valve body through the sub-valve assembly. An engine module comprising: an engine, a turbocharger and an integrated throttle assembly according to claim 25, The sub-valve body is connected between an air inlet portion of the throttle valve and an intake port of the turbocharger. An engine module, the engine module comprising: an engine, a turbocharger, and the integrated throttle assembly according to claim 23, the exhaust pipe of the engine is connected to the first sub-valve assembly, so that the A part of the exhaust gas of the engine can enter the air outlet portion of the main valve body through the first sub-valve assembly; the second sub-valve assembly is connected between the air inlet portion of the throttle and the turbocharger between the intake ports. A vehicle, characterized in that the vehicle comprises the integrated throttle assembly according to any one of claims 1-25.

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