CN109611244A - Exhaust gas recirculation valve - Google Patents
Exhaust gas recirculation valve Download PDFInfo
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- CN109611244A CN109611244A CN201910104996.3A CN201910104996A CN109611244A CN 109611244 A CN109611244 A CN 109611244A CN 201910104996 A CN201910104996 A CN 201910104996A CN 109611244 A CN109611244 A CN 109611244A
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- gear
- exhaust gas
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- 230000007246 mechanism Effects 0.000 claims abstract description 113
- 230000005540 biological transmission Effects 0.000 claims abstract description 68
- 230000033001 locomotion Effects 0.000 claims abstract description 9
- 238000010276 construction Methods 0.000 claims description 8
- 230000002265 prevention Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 47
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 18
- 238000010586 diagram Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229960004424 carbon dioxide Drugs 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000837 restrainer Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/52—Systems for actuating EGR valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/52—Systems for actuating EGR valves
- F02M26/53—Systems for actuating EGR valves using electric actuators, e.g. solenoids
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanically-Actuated Valves (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The present invention provides a kind of exhaust gas recirculation valve, the exhaust gas recirculation valve includes that shell and setting are provided with shell air flue on the intracorporal transmission mechanism of the shell, torsional spring and position-limit mechanism, the shell, is provided with valve on the shell air flue；The transmission mechanism is for driving the valve motion, to adjust the gas flow in the shell air flue；The torsional spring is connect with transmission mechanism, it is used to drive the transmission mechanism to be reset to target position by resetting torsion, the reset torsion of the target location torsional spring is 0, the position-limit mechanism is used to drive the transmission mechanism to prevent the transmission mechanism from being reset to target position when resetting towards assigned direction when the torsional spring, when so that torsional spring being limited mechanism prevention, the reset torsion of torsional spring is greater than 0, effectively reduces clamping stagnation risk under conditions of high/low temperature between valve and shell air flue.
Description
Technical field
The present invention relates to valve design technical field, in particular to a kind of exhaust gas recirculation valve.
Background technique
With the increase year by year of automobile quantity, the harm of vehicle exhaust bring is increasingly severe.Contain one in vehicle exhaust
Carbonoxide, hydrocarbon, nitrogen oxides and particle.Wherein, nitrogen oxides not only threatens people's health, but also can be serious
Environment is polluted, such as causes photochemical fog.Each emission regulation proposes to be strict with to the discharge of nitrogen oxides as a result,.EGR
(Exhaust Gas Recirculation, abbreviation EGR, exhaust gas recycling) as the technology that can effectively reduce nitrogen oxides,
It is widely used in automobile engine.
EGR is directed to the inlet end of air flue by the exhaust gas that suitable engine is discharged, and at inlet end and sucks
Fresh air mix to dilute fresh air, the fresh air after dilution enters combustion chamber, pass through reduce peak combustion temperatures
Achieve the purpose that reduce discharge nitrogen oxides with combustion pressure to inhibit the generation of nitrogen oxides.
EGR valve (exhaust gas recirculation valve) is the device for controlling exhaust gas and entering engine chamber, in general, in EGR valve
It is arranged by the valve shaft of direct current generator driving and to provide the torsional spring of restoring force, is controlled by the cooperation of valve shaft and torsional spring
The open state of valve processed, to control the flow of exhaust gas.However, due to expanding with heat and contract with cold under high/low temperature condition, valve and shell
The problem of being easy to appear clamping stagnation between body air flue, so that it is unable to operate normally.Additionally, it is provided the torsional spring of restoring force exists in valve
Into or when leaving and blocking shell air flue state restoring force can not be provided, and in no restoring force, valve will can not block shell
Body air flue (that is, valve, which can not return to it, defaults initial position), so that there are gaps between valve and shell air flue part, causes sky
The overproof risk of gas leakage amount.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of exhaust gas recirculation valve, including shell and setting described
The intracorporal transmission mechanism of shell, torsional spring and position-limit mechanism are provided with shell air flue on the shell, are provided on the shell air flue
Valve；The transmission mechanism is for driving the valve motion, to adjust the gas flow in the shell air flue；The torsional spring
It is connect with transmission mechanism, is used to that the transmission mechanism to be driven to be reset to target position, the reset of the target location torsional spring
Torsion is 0, and the position-limit mechanism is used to drive the transmission mechanism to prevent the biography when resetting towards assigned direction when the torsional spring
Motivation structure is reset to target position.
Optionally, the transmission mechanism has initial position, and the initial position is that the driving transmission mechanism rotates
Starting point, and the terminal for driving transmission mechanism to reset towards assigned direction for the torsional spring, in the initial position, the torsional spring
It resets torsion and is greater than 0, and the valve blocks the shell air flue.
Optionally, the transmission mechanism includes gear and driving wheel, and the gear is connect with the driving wheel, the torsional spring
Axial thread along the driving wheel is wrapped on the driving wheel, and is located at the side of the gear.
Further, the position-limit mechanism is located on the inner wall of the shell, and is located at the side of the gear, when described
When gear is located at the initial position, the position-limit mechanism is abutted each other with the gear.
Further, the position-limit mechanism along transmission wheel radial length at least more than between the gear and shell most
Wide arc gap, and it is less than the shell along the distance of transmission wheel radial to the driving wheel outer wall.
Further, the position-limit mechanism has a support construction, and the support construction is arranged at the position restrainer
Structure is on the surface of the gear.
Further, there is an opening, the driving wheel is located at the opening of described shell one end in the axial direction of the shell
It is interior, and it is located at the side of the shell air flue.
It further, further include driving equipment, the driving equipment is located at the side of the opening, is used to drive described
Transmission mechanism rotation.
Further, the gear includes sector gear.
It further, further include valve and valve shaft, one end of the valve shaft is connect with the valve, the valve shaft
The other end connect with the gear.
It further, further include control system, the control system and the driving equipment communicate to connect, for controlling
It states driving equipment and drives the gear and driving wheel rotation.
Compared with prior art, the beneficial effects of the present invention are: a kind of exhaust gas recirculation valve provided by the invention includes shell
Body and setting are provided with shell air flue, institute on the intracorporal transmission mechanism of the shell, torsional spring and position-limit mechanism, the shell
It states and is provided with valve on shell air flue；The transmission mechanism is for driving the valve motion, to adjust in the shell air flue
Gas flow；The torsional spring is connect with transmission mechanism, is used to drive the transmission mechanism to be reset to mesh by resetting torsion
Cursor position, the reset torsion of the target location torsional spring are 0, and the position-limit mechanism is used to drive the transmission when the torsional spring
Mechanism prevents the transmission mechanism from being reset to target position when resetting towards assigned direction, so that torsional spring is limited means block
When, the reset torsion of torsional spring is greater than 0, effectively reduce when the ambient temperature changes due to valve expanding with heat and contract with cold caused by and
Clamping stagnation risk between shell air flue.
Further, it sets and prevents position-limit mechanism at torsional spring reset as the initial position of transmission mechanism, at this location,
The reset torsion of the torsional spring is greater than 0, and the valve blocks the shell air flue, to eliminate in target location valve
The risk that exhaust leak amount is overproof caused by shell air flue can not be blocked.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of exhaust gas recirculation valve；
Fig. 2 is a kind of structural schematic diagram of exhaust gas recirculation valve of one embodiment of the invention.
Description of symbols:
10- shell；21- driving wheel；22- gear；23- torsional spring；30- valve shaft；40- valve；50- driving equipment；60- shell
Body air flue；
100- shell；110- shell air flue；
200- transmission mechanism, 210- driving wheel；220- gear；
300- torsional spring；
400- valve；
500- valve shaft；
600- driving equipment；
700- position-limit mechanism；710- support construction.
Specific embodiment
Fig. 1 is a kind of structural schematic diagram of exhaust gas recirculation valve.As described in Figure 1, traditional exhaust gas recirculation valve includes shell
Driving wheel 21 and torsional spring 23 in the shell 10 is arranged in body 10, and the shell air flue 60 on the shell 10 is arranged in, described
It is provided with valve 40 on shell air flue 60, gear 22 is connected on the driving wheel 21, the valve 40 passes through the valve shaft
30 connect with gear 22, and the side of the shell 10 is provided with a driving equipment 50, and the driving equipment 50 drives the gear
22 drive the driving wheel 21 to rotate towards first direction, and the gear 22 is driven to drive the valve in the shell air flue 60
It is middle to be rotated towards first direction.The torsional spring 23 is wrapped on the driving wheel 21 along the axial screw of the driving wheel 21, and position
In the side of the gear, the both ends of the torsional spring are, for example, to be respectively sleeved on two convex ribs that the shell is arranged in, institute
It states torsional spring and driving equipment 50 drives the gear 22 to drive the driving wheel 21 towards assigned direction (i.e. first direction is reversed)
It is reset to target position, in target location, the reset torsion of the torsional spring 23 is 0, and the valve 40 is in the shell air flue
The shell air flue 60 is blocked in 60, to control the exhaust gas flow for being passed through shell air flue 60, to realize ER EGR Rate
Accurate control.
Inventor is the study found that the valve default closed position (i.e. target position) of exhaust gas recirculation valve is the shell gas
The position that road closes entirely, in order to guarantee that valve is in default closed position, it is 0 that reset torsion of the torsional spring at this, which is usually arranged, i.e.,
Torsional spring does not pass through driving wheel and exerts a force to valve shaft, at this location, since variation of ambient temperature is larger, causes shell and valve
It expands with heat and contract with cold, causes and occur clamping stagnation risk between valve and shell air flue.
Inventor also found, since the both ends of torsional spring are set on the convex ribs of shell, so that existing between torsional spring and convex ribs
Certain gap, when valve does not reach default closed position (target position) also, the reset torsion of torsional spring has taken the lead in being zeroed,
That is, the gap between torsional spring and convex ribs causes driving wheel that can be freely rotated within a certain angle, so that valve shaft band movable valve
It can be freely rotated in certain angle, to cause between valve and shell air flue that there are gaps, exhaust gas defaulted
It can circulate at closed position, there are the overproof risks of exhaust leak amount.
Based on the studies above, a kind of exhaust gas recirculation valve provided by the invention includes shell and is arranged in the shell
Interior transmission mechanism, torsional spring and position-limit mechanism is provided with shell air flue on the shell, is provided with valve on the shell air flue
Door；The transmission mechanism is for driving the valve motion, to adjust the gas flow in the shell air flue；The torsional spring with
Transmission mechanism connection is used to drive the transmission mechanism to be reset to target position, the target location by resetting torsion
The reset torsion of torsional spring is 0, and the position-limit mechanism is used for when the torsional spring drives the transmission mechanism to reset towards assigned direction
The transmission mechanism is prevented to be reset to target position, so that the reset torsion of torsional spring is greater than when torsional spring is limited means block
0, it effectively reduces when the ambient temperature changes due to the clamping stagnation wind between valve caused by expanding with heat and contract with cold and shell air flue
Danger.
Core of the invention thought is to provide a kind of exhaust gas recirculation valve, with reduce when the ambient temperature changes by
The valve caused by expanding with heat and contract with cold and the clamping stagnation risk between shell air flue.
To realize above-mentioned thought, the present invention provides a kind of exhaust gas recirculation valve, the exhaust gas recirculation valve include shell,
And setting is provided with shell air flue, the shell on the intracorporal transmission mechanism of the shell, torsional spring and position-limit mechanism, the shell
Valve is provided on body air flue；The transmission mechanism is for driving the valve motion, to adjust the gas in the shell air flue
Body flow；The torsional spring is connect with transmission mechanism, is used to drive the transmission mechanism to be reset to target position by resetting torsion
It sets, the reset torsion of the target location torsional spring is 0, and the position-limit mechanism is used to drive the transmission mechanism when the torsional spring
The transmission mechanism is prevented to be reset to target position when resetting towards assigned direction.
To keep the purpose of the present invention, advantages and features clearer, below in conjunction with attached drawing to exhaust gas proposed by the present invention again
Circulating valve is described in further detail.It should be noted that attached drawing is all made of very simplified form and uses non-accurate ratio
Example, only for the purpose of facilitating and clarifying the purpose of the embodiments of the invention.
As used in the present disclosure, singular "a", "an" and "the" includes plural reference, removes non-content
In addition it explicitly points out outer.As used in the present disclosure, term "or" is usually to be made with including the meaning of "and/or"
, in addition in addition non-content explicitly points out.
Fig. 2 is a kind of structural schematic diagram of exhaust gas recirculation valve of the present embodiment.As shown in Fig. 2, present embodiments providing
A kind of exhaust gas recirculation valve is e.g. used for the exhaust gas recirculation valve of engine.The exhaust gas recirculation valve includes shell 100,
The shell 100 is, for example, aluminum enclosure, and the shell 100 is, for example, to be in the form of a column structure.Have extremely in the axial direction of the shell 100
A few opening, e.g. two openings, one of opening with shell air flue for connecting, another opening is for preventing
Multiple components of exhaust gas recirculation valve.The shell 100 is radially provided with a shell air flue 110, the shell air flue
110 run through the shell 100, and the shell air flue 110 is, for example, the exhaust gas of engine discharge and the fresh air mixing of sucking
The opening of circulation passage afterwards, i.e., the described shell air flue 110 is located on the side wall of the shell 100.It should be noted that described
Shell air flue 110 the shell 100 be radially not limited in axially vertical direction, can also with it is axial have it is certain
Angle direction.
The exhaust gas recirculation valve further includes transmission mechanism 200, and the transmission mechanism 200 is arranged in the shell 100,
And it is located at another opening of the shell 100.The transmission mechanism 200 be, for example, include driving wheel 210 and gear 220,
The driving wheel 210 and gear 220 connect, and, the driving wheel 210 and gear 220 can the transfers in the shell 100
It is dynamic.The driving wheel 210 is, for example, to be in the form of a column, and the driving wheel 210 is located at another opening in the shell 100, and
Positioned at the side of the shell air flue 110.The driving wheel 210 is provided with a through-hole along its axial direction, the through-hole and the shell
Air flue 110 is connected to.The driving wheel 210 includes first part and second part along its axial direction, and the gear 220 is, for example, sector
Gear, the gear 220 are connected to the first part of the driving wheel 210, and the gear 220 drives 210 turns of the driving wheel
It is dynamic, and the gear 220 has target position and initial position, in no external force when on the gear 220, the gear
220 are located at the target location.Spiral wound has torsional spring 300, the torsional spring 300 on the second part of the driving wheel 210
Both ends be limited on the shell 100, on the inner wall of the shell 100, specific is, for example, that limit exists for e.g. limit
On the convex ribs of the inner wall of the shell 100.The torsional spring is for driving the transmission mechanism 200 to be reset to target position, into one
Step, the torsional spring 300 is used to drive the gear 220 to be reset to target position, the mesh by the reset torsion of its own
The reset torsion of torsional spring is 0 at cursor position.When the gear 220 is located at initial position, the reset torsion of the torsional spring 300
Greater than 0, when the driving gear 220 leaves initial position and is, for example, the first direction (negative side of assigned direction along a direction
To) rotation when, the reset torsion on the torsional spring 300 can be gradually increased.
Since the reset torsion on the torsional spring 300 is greater than 0, the prevention torsional spring 300 is needed to drive the driver
Structure 200 is, for example, that second direction is reset on the target position that reset torsion is 0, and the gear 220 is hindered towards assigned direction
Initial position is only rested on, the exhaust gas recirculation valve further includes position-limit mechanism 700, and the position-limit mechanism 700 is for working as institute
Stating torsional spring 300 drives the transmission mechanism 200 to prevent the transmission mechanism 200 from being reset to target position when resetting towards assigned direction
It sets.The position-limit mechanism 700 is, for example, to be located in the shell 100 (to be e.g. located at the shell of 220 side of gear
100 inner walls), and abutted each other with the gear 220 for being located at initial position.From the foregoing, it will be observed that in the gear 220 and position-limit mechanism
700 when abutting each other, the gear 220 and driving wheel 210 are static, and the reset torsion of the torsional spring 300 is greater than 0, effectively
It reduces when the ambient temperature changes due to the clamping stagnation wind caused by expanding with heat and contract with cold between valve 400 and shell air flue 110
Danger.
In the present embodiment, the position-limit mechanism 700 is along the radial length of driving wheel 210 at least more than the gear 220
With the maximal clearance between shell 100, and it is radial to 210 outer wall of driving wheel along driving wheel 210 to be less than the shell 100
Length.Meanwhile in order to reduce gear 220 and when driving wheel 210 is blocked in initial position position-limit mechanism 700 caused by it
Physical damnification, the position-limit mechanism 700 against the gear 220 surface shape preferably with the gear 220 against described
The shape on the surface of position-limit mechanism 700 is identical, and is parallel to each other.Optionally, the position-limit mechanism also has a support construction
710, the support construction 710 is used to support the position-limit mechanism 700 to assist the gear 220 and position-limit mechanism 700 mutual
Against.The support construction 710 is arranged on the surface that the position-limit mechanism 700 leans face with gear 220.Institute
The material for stating position-limit mechanism 700 and support construction 710 is heat-resisting material, preferably identical with 100 material of shell
Aluminium.Preferably, the position-limit mechanism 700 and the shell 100 are integrally formed.In other embodiments, the position-limit mechanism supports
Shape of the surface shape preferably with the gear against the surface of the position-limit mechanism by the gear can also be different, can
To be designed position-limit mechanism according to actual needs against the surface shape of the gear.The shape of the position-limit mechanism does not limit
It is fixed, e.g. for a several columnar projections of column strip collectively constitute strip or several circular protrusions or
Mesa-shaped protrusion collectively constitutes the strip of the combination formation of strip or several shapes, is also possible to the convex of an above-mentioned shape
It rises.Preferably, chamfering is all had between each connection surface of the position-limit mechanism.
The exhaust gas recirculation valve further includes valve 400 and valve shaft 500, and the valve shaft 500 is located at the driving wheel
In 210 through-hole, the valve shaft 500 includes first end and second end, the first end of the valve shaft 500 and the driving wheel
210 connections, so that the transmission mechanism 200 drives valve motion to adjust the gas flow in the shell air flue, specifically,
The first end of the valve shaft 500 is connect with the gear 220；The second end of the valve shaft 500 and the valve 400 connect
It connects, valve shaft 500 is allowed to drive the valve 400 to rotate in the shell air flue 110 in rotation.The valve
400 be located at the shell air flue 110 in, the valve 400 be, for example, plate valve, it is preferred that the shape of the valve 400 with
The shape in the section of the shell air flue 110 radially is identical.When the position-limit mechanism 700 abuts each other (institute with gear 220
State gear 220 and be located at initial position) when, the valve 400 is in the shell air flue 110 often in the closure shell air flue
110 position (i.e. shell air flue close entirely position), so that the gas of 400 two sides of valve can not circulate, it is known that, the gear
220 when being located at initial position, and the reset torsion of the torsional spring is greater than 0, and the valve blocks the shell air flue, to eliminate
In target location valve it can not block the risk that exhaust leak amount is overproof caused by shell air flue.It needs, though
So in the present embodiment, the valve rotates in shell air flue to change the gas flow in shell air flue, but at other
In embodiment, the valve can also change the gas flow in shell air flue, the present invention couple by modes such as movement, deformations
This is not construed as limiting.
The exhaust gas recirculation valve further includes driving equipment 600, and the driving equipment 600 is, for example, linear motor, described
The side that another is open described in the shell 100 is arranged in driving equipment 600, to drive the transmission mechanism 200 to rotate,
Specifically, the driving equipment 600 is by driving the gear 220 to drive initial position of the driving wheel 210 from gear 220
Be rotated in a first direction, at this point, the torsional spring 300 with the rotation of driving wheel 210 generate increasing reset torsion (that is,
The driving wheel 210 is pullled along the counter-rotational restoring force of first direction), it is rotated in a first direction in the gear 220 stopping
Afterwards, the reset torsion of the torsional spring 300 drives the driving wheel 210 to reset along assigned direction (that is, first direction rotates backward)
When to initial position, due to position-limit mechanism 700 blocking and stop continuing to reset to target position.In the whole process, described
Transmission mechanism 200 rotates in shell air flue 110 with movable valve 500.
The exhaust gas recirculation valve further includes a control system (not shown), and the control system is set with the driving
Standby 600 communication connection drives the transmission mechanism to rotate, to adjust in shell air flue 110 for controlling the driving equipment 600
Gas flow.
In conclusion in a kind of exhaust gas recirculation valve provided by the invention, the exhaust gas recirculation valve include shell and
Setting is provided with shell air flue, the shell gas on the intracorporal transmission mechanism of the shell, torsional spring and position-limit mechanism, the shell
Valve is provided on road；The transmission mechanism is for driving the valve motion, to adjust the gas stream in the shell air flue
Amount；The torsional spring is connect with transmission mechanism, is used to drive the transmission mechanism to be reset to target position by resetting torsion, institute
The reset torsion for stating target location torsional spring is 0, and the position-limit mechanism is used to drive the transmission mechanism towards finger when the torsional spring
Determine to prevent the transmission mechanism from being reset to target position when direction resets, when so that torsional spring being limited mechanism prevention, torsional spring is answered
Position torsion is greater than 0, effectively reduce when the ambient temperature changes due to valve expanding with heat and contract with cold caused by and shell air flue it
Between clamping stagnation risk.
Further, it sets and prevents position-limit mechanism at torsional spring reset as the initial position of transmission mechanism, at this location,
The reset torsion of the torsional spring is greater than 0, and the valve blocks the shell air flue, to eliminate in target location valve
The risk that exhaust leak amount is overproof caused by shell air flue can not be blocked.
In addition, it should be noted that, unless stated otherwise or point out, the otherwise term " first " in specification, "
Two " description is used only for distinguishing various components, element, step etc. in specification, without being intended to indicate that various components, member
Logical relation or ordinal relation between element, step etc..
It is understood that although the present invention has been disclosed in the preferred embodiments as above, above-described embodiment not to
Limit the present invention.For any person skilled in the art, without departing from the scope of the technical proposal of the invention,
Many possible changes and modifications all are made to technical solution of the present invention using the technology contents of the disclosure above, or are revised as
With the equivalent embodiment of variation.Therefore, anything that does not depart from the technical scheme of the invention are right according to the technical essence of the invention
Any simple modifications, equivalents, and modifications made for any of the above embodiments still fall within the range of technical solution of the present invention protection
It is interior.
Claims (11)
1. a kind of exhaust gas recirculation valve, which is characterized in that including shell and be arranged in the intracorporal transmission mechanism of the shell, torsion
Spring and position-limit mechanism are provided with shell air flue on the shell, are provided with valve on the shell air flue；The transmission mechanism is used
In driving the valve motion, to adjust the gas flow in the shell air flue；The torsional spring is connect with transmission mechanism, is used
In driving the transmission mechanism to be reset to target position, the reset torsion of the target location torsional spring is 0, the position-limit mechanism
For preventing the transmission mechanism from being reset to target position when the torsional spring drive transmission mechanism is resetted towards assigned direction.
2. exhaust gas recirculation valve as described in claim 1, which is characterized in that the transmission mechanism has initial position, described
Initial position is the starting point of the driving transmission mechanism rotation, and drives transmission mechanism to reset towards assigned direction for the torsional spring
Terminal, in the initial position, the reset torsion of the torsional spring is greater than 0, and the valve blocks the shell air flue.
3. exhaust gas recirculation valve as described in claim 1, which is characterized in that the transmission mechanism includes gear and driving wheel,
The gear is connect with the driving wheel, and the torsional spring is wrapped on the driving wheel along the axial thread of the driving wheel, and
Positioned at the side of the gear.
4. exhaust gas recirculation valve as claimed in claim 3, which is characterized in that the position-limit mechanism is located at the inner wall of the shell
On, and it is located at the side of the gear, when the gear is located at initial position, the position-limit mechanism is mutually supported with the gear
It leans on.
5. exhaust gas recirculation valve as claimed in claim 4, which is characterized in that length of the position-limit mechanism along transmission wheel radial
At least more than the maximal clearance between the gear and shell, and it is less than the shell outside transmission wheel radial to the driving wheel
The distance of wall.
6. exhaust gas recirculation valve according to any one of claims 1 to 5, which is characterized in that the position-limit mechanism has one
Support structure, the support construction are arranged at the position-limit mechanism on the surface of the gear.
7. exhaust gas recirculation valve according to any one of claims 1 to 5, which is characterized in that have in the axial direction of the shell
One opening, the driving wheel are located in the opening of described shell one end, and are located at the side of the shell air flue.
8. exhaust gas recirculation valve as described in any of claims 7, which is characterized in that it further include driving equipment, the drive
Dynamic equipment is located at the side of the opening, is used to that the transmission mechanism to be driven to rotate.
9. exhaust gas recirculation valve according to any one of claims 1 to 5, which is characterized in that the gear includes sector
Wheel.
10. exhaust gas recirculation valve according to any one of claims 1 to 5, which is characterized in that it further include valve and valve shaft,
One end of the valve shaft is connect with the valve, and the other end of the valve shaft is connect with the gear.
11. exhaust gas recirculation valve according to any one of claims 1 to 5, which is characterized in that it further include control system, it is described
Control system and the driving equipment communicate to connect, and drive the gear and driving wheel rotation for controlling the driving equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910104996.3A CN109611244A (en) | 2019-02-01 | 2019-02-01 | Exhaust gas recirculation valve |
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| CN201910104996.3A CN109611244A (en) | 2019-02-01 | 2019-02-01 | Exhaust gas recirculation valve |
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| CN109611244A true CN109611244A (en) | 2019-04-12 |
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| CN201910104996.3A Pending CN109611244A (en) | 2019-02-01 | 2019-02-01 | Exhaust gas recirculation valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377340A (en) * | 2021-01-18 | 2021-02-19 | 宁波协诺机电有限公司 | Electric actuator, turbocharging system and commercial vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1641203A (en) * | 2003-10-24 | 2005-07-20 | 库帕-标准汽车（德国）有限责任公司 | Exhaust gas recirculation valve |
| CN101054934A (en) * | 2006-04-12 | 2007-10-17 | 株式会社电装 | Throttle valve control device and method for throttle valve control |
| CN202970959U (en) * | 2012-12-14 | 2013-06-05 | 宜宾天瑞达汽车零部件有限公司 | Rotary type exhaust gas recirculation (EGR) valve |
| CN203702380U (en) * | 2013-12-20 | 2014-07-09 | 联创汽车电子有限公司 | Electric control EGR (Exhaust Gas Recirculation) valve with built-in controller |
| CN106255820A (en) * | 2014-04-01 | 2016-12-21 | 法雷奥电机控制系统公司 | Including the valve of the valve body improved with for the method manufacturing such valve |
| CN106460681A (en) * | 2014-04-22 | 2017-02-22 | 法雷奥电机控制系统公司 | Fluid flow valve |
-
2019
- 2019-02-01 CN CN201910104996.3A patent/CN109611244A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1641203A (en) * | 2003-10-24 | 2005-07-20 | 库帕-标准汽车（德国）有限责任公司 | Exhaust gas recirculation valve |
| CN100359153C (en) * | 2003-10-24 | 2008-01-02 | 库帕-标准汽车（德国）有限责任公司 | exhaust gas recirculation valve |
| CN101054934A (en) * | 2006-04-12 | 2007-10-17 | 株式会社电装 | Throttle valve control device and method for throttle valve control |
| CN202970959U (en) * | 2012-12-14 | 2013-06-05 | 宜宾天瑞达汽车零部件有限公司 | Rotary type exhaust gas recirculation (EGR) valve |
| CN203702380U (en) * | 2013-12-20 | 2014-07-09 | 联创汽车电子有限公司 | Electric control EGR (Exhaust Gas Recirculation) valve with built-in controller |
| CN106255820A (en) * | 2014-04-01 | 2016-12-21 | 法雷奥电机控制系统公司 | Including the valve of the valve body improved with for the method manufacturing such valve |
| CN106460681A (en) * | 2014-04-22 | 2017-02-22 | 法雷奥电机控制系统公司 | Fluid flow valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377340A (en) * | 2021-01-18 | 2021-02-19 | 宁波协诺机电有限公司 | Electric actuator, turbocharging system and commercial vehicle |
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Application publication date: 20190412 |