DE19941179A1 - Suction and inlet device for internal combustion engine comprises two suction and inlet valves per cylinder together with swirl regulation valve unit between cylinder head and suction and inlet distributor - Google Patents

Abstract

A branch wall area (56) divides into first and second branch suction and inlet distributor channels (14.1, 14.2) corresponding to the number of suction and inlet valves per cylinder. Independent first and second swirl regulation valve channels (12.1, 12.2) are provided within the swirl regulating valve unit (8). The cross-sectional shape of the first swirl regulation valve channel (12.1) is circular and that of the second swirl regulation valve channel (12.2) is elliptical.

Description

This invention relates to an intake device for a combustion tion motor and in particular a suction or intake device for one Internal combustion engine, which can reduce the resistance of the intake air if an intake or inlet channel is split or branched, and the one vortex using a swirl control valve unit.

In an internal combustion engine, especially in an internal combustion engine for Motor vehicles, a suction or intake manifold is attached to a cylinder head builds, and is an intake or inlet port of the cylinder head with a Intake or inlet manifold of the intake manifold in connection to one Intake or inlet channel to form.

Some of the internal combustion engines have a swirl control valve unit (also referred to as an "SCV" unit) between the cylinder head and the intake or inlet manifold used.

The above intake device for a combustion motor is published in Japanese Patent Application Laid-Open 5-180,091 light. Exhaust gas recirculation is part of the engine's cylinder head design direction (here an EGR device (EGR = exhaust recirculation gas) for supply Ren part of the exhaust gas within an exhaust port, as exhaust gas circulating gas, provided to intake and intake systems for each cylinder. On Volume area is near a contact area between a suction or inlet manifold flange and a closure valve body. A Partition for dividing the volume area into two isolated chambers, one upper and a lower chamber, is provided within the volume range, around a connection area between the two isolated chambers allow. The exhaust gas recirculation gas is from a sixth exhaust gas recirculation Feed channel from to the lower isolated chamber of the volume area guided. The exhaust gas circulating gas is isolated from the lower chamber of the Volume range from to a first branch suction or inlet channel  each cylinder supplied via a connection path. A first exhaust gas roller supply channel is arranged parallel to an oil supply channel, and the exhaust gas circulating gas is cooled by the oil, thereby causing the distribution of the exhaust gas circulating gas is standardized to each cylinder and the rise the intake or inlet temperature, which is introduced by introducing the exhaust gas Gases caused is reduced.

Furthermore, a suction or the inlet device is also in the open Japanese Patent Application 6-117,260. With this suction An intake device for an engine, in which two intake ports, i. H. on primary connection and a secondary connection, provided for each cylinder is an intake control valve on an intake tube provided on the side of the secondary connector. A valve actuator wave can pass through the intake pipe on the side of the extend secondary connection. An intake control valve is connected to the valve drive shaft. The suction or inlet pipe is on the Side of the primary port away from the valve drive shaft whereby in the intake or intake device for an engine the intake or Intake resistance of the intake or intake control valve is reduced.

Furthermore, an intake device is also disclosed in the Japanese Patent Application 7-229 424. With this suction or Intake device for an engine in which an intake control valve for variable regulation of a surface of an intake or inlet channel within an intake duct in connection with a plurality of Intake or inlet valve openings is provided, is in the intake or Inlet channel by means of a membrane in a second channel in connection with a Intake or inlet valve opening and in a first channel in connection with the other suction or inlet valve openings limited or divided. A second Control valve is provided to completely close the second channel when the amount of intake air is small, and to completely shut it off open if the amount of intake or intake air is large. First rain lungsventil is provided to close the first channel in a state so if the amount of intake or intake air is small, only a part of the is open on the upper wall side or on the outer wall side of the first channel, and to open it fully when the amount of intake air is large, which creates a stronger movement or vortex,  without increasing the intake or intake resistance.

Furthermore, an intake device is also disclosed in the Japanese Patent Application 8-177,659. With this suction or The intake manifold for an internal combustion engine is the intake manifold one of an adhesive structure, the two divided elements, an upper and an lower element, which is on the dividing surface between the two External walls attached to the dividing surface of the central partition brought and arranged in contact or are not glued with release a distance on the dividing surface of the central partition, whereby the Height dimension of the partition wall no dimension control of high accuracy makes necessary. The partition does not require a thickness for one Vibration deposition is necessary to reduce the thickness and the Intake and inlet manifolds to be compact.

Furthermore, a suction or intake device is also disclosed in the japani patent application 9-189 271. At this intake or inlet distributor for an engine is an intake or inlet made of plastic distributor provided where a junction for low speed with a smaller channel cross-sectional area than with a branch for a high one Speed for guiding suction or intake at the curved outside of the junction is designed for high speed is. The intake manifold is in an upper manifold and sides plates made of plastic, divided, and mutually deposited Partition areas are designed so that they branch out for a low Speed are facing to ensure sufficient strength Afford.

Furthermore, an intake device is also disclosed in the Japanese Utility Model Application 6-34 162. With this suction or intake device for a 2-valve internal combustion engine is an intake or Inlet port with respect to the two intake valves on one single cylinder open to the side of the cylinder head. On Branch pipe for branching an intake or inlet pipeline from an air cleaner out in two suction or inlet connections is with the side in connected to the cylinder head, with a branch separation area to Branch a channel that is connected to the intake or inlet pipe  of the branch pipe communicates in two channels connected to the two Suction and inlet ports communicate from the branch tube is formed from separately. The branch separation area is within of the branch pipe attached.

Furthermore, there is an intake device for a combustion motor also disclosed in Japanese Patent Application Laid-Open 61-187 524 beard.

Incidentally, the conventional intake extends device for an internal combustion engine, an intake or inlet channel of one Storage tank of an intake or intake manifold from towards the cylinder head. That is, an intake manifold within the intake distributor and have an intake or intake port within the cylinder head one channel per cylinder, and the number of intake and intake valves per cylinder is occasionally one.

In the case where the number of intake valves per cylinder is less than two, for example two, an intake port 110 ( FIG. 18) is in a first and a second intake port 110-1 and 110-2 branched. The first and second intake and inlet ports 110-1 and 110-2 are connected to a combustion chamber, not shown.

In a conventional internal combustion engine 202 ( FIG. 19), a swirl control valve unit 208 is arranged between a cylinder head 204 and an intake manifold 206 . The intake manifold 206 is not provided on the inside with a branch wall area for branching an intake manifold channel 214 into two channels. Here, a branch wall area 256 is formed within the swirl control valve unit 208 . Consequently, when the internal combustion engine is running, the boundary layer of the intake or intake is expanded so as to avoid a wall surface 256 a, which is arranged upstream of the branch wall region 256 , as shown in FIGS. 20 and 21. By expanding the boundary layer, the diameters d1 and d2 of the first and second SCV channels 212-1 and 212-2 of the swirl control valve channels (hereinafter referred to as "SCV channel") within the swirl control valve unit 208 are reduced, so that the actual channel areas of the first and second SCV channels 212-1 and 212-2 decrease and the channel resistance increases, resulting in a disadvantage in practical use.

To overcome or minimize the night part specified above is according to of the present invention a suction device for an Internal combustion engine provided with a 2-valve intake or intake system, which has two intake and intake valves per cylinder. A vortex regulation valve unit is between the cylinder head and the intake or intake manifold used. A branch wall area branches part of an intake or inlet manifold channel within the intake or inlet manifold into one first and a second branch intake manifold according to the number of intake and intake valves per cylinder. Independent first and second swirl control valve channels in connection with the first and second branch intake ports are within the Vortex control valve unit provided. The cross-sectional shape of the first Swirl control valve channel is formed into a circular shape, and the cross-sectional shape of the second swirl control valve channel is one elliptical shape. The elliptical shape of the second vortex rain aeration valve channel supports the generation of a vortex of the intake or Intake air. This design reduces the resistance of the intake or inlet air.

In another embodiment, a branch wall area branches, the one in cross section converges toward the upstream side has a swirling control valve channel within the swirl Control valve unit in independent first and second swirl control valve channels corresponding to the number of intake or intake valves per cylinder, the are provided within the vortex control valve unit.

In another intake or intake device for an internal combustion engine is an intermediate element between an intake manifold and an Vortex control valve unit provided. A branching wall area that a cross converging in cross section toward the upstream side cut, branches an intermediate element channel within the Intermediate element in first and second intermediate element channels according to the Number of intake or intake valves per cylinder that are in between elements are provided. By providing the branch wall area  within the intermediate element, the intake manifold and the Vortex control valve unit can be used without deformation.

Furthermore, there is an intake device for a combustion motor created, in which a branch wall area a vortex rain Aeration valve channel within the swirl control valve unit in independent first and second swirl control valve channels according to the number of intake or intake valves per cylinder branches within the vortex control valve unit are provided. One branch support element, one converging in cross section toward the upstream side Shape and has a cap shape is at the end of the upstream Side of the branch wall area within the swirl control valve unit attached. In this training or arrangement, it is through Use the separately formed branch support member not necessary, the intake manifold and the swirl control deform valve unit.

The invention is further described in detail below by way of example only going and described with reference to the drawings in which demonstrate:

Fig. 1 is a schematic sectional view of a suction or Einlaßvorrich processing for an internal combustion engine with the representation of one embodiment of this invention;

Fig. 2 is a sectional view taken along the line II-II of Fig. 1;

Fig. 3 is a sectional view taken along the line III-III of Fig. 1;

Fig. 4 is a sectional view taken along the line IV-IV of Fig. 1;

Fig. 5 is a sectional view taken along the line VV of Fig. 1;

Fig. 6 is a sectional view taken along the line VI-VI of Fig. 1;

Fig. 7 is a perspective installation view of an intake manifold and a swirl control valve unit;

Fig. 8 is a rear view of a swirl control valve unit;

Fig. 9 is a schematic installation view in a state in which a swirl control valve unit, cut along the line IX-IX of Fig. 8, is inserted between a cylinder head and an intake manifold;

Fig. 10 is a front view of a flange portion of a suction or inlet manifold;

Fig. 11 is a sectional view taken along the line XI-XI of Fig. 10;

Fig. 12 is a sectional view taken along the line XII-XII of Fig. 10;

Fig. 13 is a sectional view taken along the line of XIII-XIII of Fig. 11;

Fig. 14 is a sectional view taken along the line of XIV-XIV of Fig. 11;

Fig. 15 is an enlarged schematic sectional view in a state in which a swirl control valve unit between a cylinder head and an intake manifold is used, showing a second embodiment of this invention;

FIG. 16 is an enlarged schematic sectional view in a state where a swirl control valve unit head between a cylinder and a suction or inlet manifold is used, with the representation of a third embodiment of this invention;

17 is an enlarged schematic sectional view of a wall portion branching within a swirl control valve unit showing a fourth embodiment of this invention.

Fig. 18 is a schematic sectional view of an intake device of the prior art for an internal combustion engine which does not have a swirl control valve unit inserted;

Fig. 19 is a schematic sectional view of an intake device of the prior art for an internal combustion engine which does not have a swirl control valve unit inserted;

Fig. 20 is an enlarged view of an area along the line XX of Fig. 19;

Fig. 21 is a sectional view taken along line XXI-XXI of Fig. 19.

Hereinafter, the embodiments of the present invention will be described in detail with reference to FIGS. 1 to 14.

Referring to FIG. 1, 7 and 9, reference numeral 2 designate a combustion motor, the numeral 4 a cylinder head, and reference numeral 6 a suction or inlet manifold. The internal combustion engine 2 has a cylinder block (not shown). The cylinder head 4 is attached to the upper surface of the cylinder block, and a cylinder head cover (not shown) is attached to the upper surface of the cylinder head 4 , and an oil pan (not shown) is attached to the lower surface of the cylinder block.

A swirl control valve unit 8 is inserted between the cylinder head 4 and the intake manifold 6 in the internal combustion engine 2 . An intake port 10 within the cylinder head 4 , a swirl control valve passage (hereinafter referred to as an "SCV passage") 12 within the swirl control valve unit 8, and an intake manifold 14 within the intake manifold 6 are in communication with each other to form an intake duct 16 .

The intake or inlet manifold 6 has, as shown in FIGS . 7 and 9, a storage tank 22 on the upstream side with a throttle body mounting surface 20 for attaching a throttle body 18 , a flange area 24 on the downstream side, on the swirl control valve Unit 8 is attached, and a plurality of (e.g. three) branch pipes (first of the third pipe) 96-1 , 96-2 and 96-3 for connection between the storage tank 22 and the flange portion 24th

A first reinforcement rib 28-1 is provided on one side of the first branch pipe 26-1 , a second reinforcement rib 28-2 is between the first and second branch pipes 26-1 and 26-2 on the other side of the first branch pipe 26-1 provided, and a third reinforcing rib 28-3 is provided between the second and third branch pipes 26-2 and 26-3 .

The positions on the upstream sides of the second and third ribs 28-2 and 28-3 are substantially at a central portion between the first and second branch pipes 26-1 and 26-2 and between the second under the third branch pipe 26- 2 and 26-3 positioned.

In Fig. 7 and 9, 30 refer to the reference characters a first seal, which is inserted between the cylinder head 4 and the swirl control valve unit 8, the reference numeral 32, a second seal, the lung valve unit between the vortex Rege 8 and the intake or inlet manifold 6 , and reference numeral 34 is an actuator for a swirl control valve (also referred to as "SCV"), which will be described later.

The swirl control valve unit 8 is attached to the back surface, ie the surface to which the flange portion 24 is attached of the suction or inlet manifold 6, a projecting outer circumferential wall portion 36 and on the inner side of the outer peripheral wall portion 36 having an SCV-channel Wall area 38 formed to form the SCV channel 12 , as shown in Fig. 8.

An injector attachment seat portion 40 for attaching an injector (not shown) to be aligned with a combustion chamber (not shown), a feed tube attachment boss 42 for attaching a feed tube (not shown), and an air duct 44 for supporting the injector are on the top Surface of the swirl control valve unit 8 attached; a negative pressure introduction path 46 is arranged on the lower surface of the swirl control valve unit 8 ; and a unidirectional valve 48 is provided in the middle of the vacuum introduction path 46 .

In Fig. 8, reference numeral 50 denotes a first vacuum tank, 52 a second vacuum tank, and 54 a swirl control valve (also referred to as "SCV") disposed on one of the SCV channels 12 , that is, within a first SCV channel 12-1 , described below.

When the internal combustion engine 2 is of a construction in which the number of intake valves (not shown) per cylinder is two, that is, a 2-valve intake system, the intake port is 10 in branches a first and a second suction or inlet connection 10-1 or 10-2 .

A first branch wall portion 56 for branching a portion of the intake manifold 14 within the intake manifold 6 into a first and a second branch intake manifold 14-1 and 14-2 corresponding to FIG Number of intake or intake valves per cylinder is provided within the intake or intake manifold 6 . The SCV channel 12 , ie, the respective independent first and second SCV channels 12-1 and 12-2 in conjunction with the first and second branch intake and inlet manifold channels 14-1 and 14-2, are within the swirl control valve unit 8 is provided to form the cross-sectional shape of the first SCV channel 12-1 into a cylindrical shape and to form the cross-sectional shape of the second SCV channel 12-2 into an elliptical shape.

In detail, the branch wall portion 56 is provided from the flange portion 24 on the downstream side toward the upstream side within the intake manifold 6 as shown in FIG. 1. The branch wall portion 56 is formed into a shape converging in cross section toward the upstream side.

The intake manifold 6 , as shown in Fig. 1, has an intake manifold 14 , which is circular in cross section, on the side of the storage tank 22 of the intake manifold 6 , a first branch suction - Inlet manifold 14-1 , which is circular in cross section and branched through the branch wall portion 56 , and a second branch suction or inlet manifold 14-2 , which is elliptical in cross section and its short axis in the direction of Closing to and moving away from the first branch suction manifold 14-1 and having its long axis the same length as the diameter of the first branch suction manifold 14-1 .

Furthermore, the swirl control valve unit 8 , as set in FIG. 1, has a first SCV channel 12-1 with the same cross-sectional shape in connection with the first branch suction or inlet distributor channel 14-1 and a second SCV channel 12-2 with the elliptical cross-sectional shape, which is the same cross-sectional shape, in connection with the second branch intake manifold 14-2 .

Furthermore, as shown in FIG. 1, the cylinder head 4 has a first intake port 10-1 in connection with the first SCV channel 12-1 and a second intake port 10-2 in connection with the second SCV channel 12-2 .

The shape of the intake duct 16 is further described in detail. The cross-sectional shape of the intake duct 16 on the part directly below the storage tank 22 of the intake manifold 6 has a single circular cross-section, as shown in FIG. 2.

As it moves toward the downstream end of the intake manifold 6 , the shape of the channel having a single circular shape gradually increases with the distance between the centers of a plurality of channels to an elliptical cross-sectional shape as shown in Fig. 3 Darge is. Therefore, the area of the channel in front of the part directly above the branching wall area 56 increases , an elliptical cross-sectional shape of the size appears in which the first two circular cross-sectional shapes lie side by side, as shown in FIG. 4.

The first branch intake duct 14-1 , which is branched by the branch wall portion 56 , maintains a circular cross-sectional shape with the diameter D1 as shown in Figs. 11 and 14, while the second branch intake - or inlet manifold 14-2 is changed or tapered along the downstream direction to an elliptical cross-sectional shape, the short diameter DS of which extends along a path away from the center of the first branch intake manifold 14-1 and whose long diameter DL having the same length as the diameter D1 of the first branch manifold 14-1 extends in a direction along a path perpendicular to the short diameter path DS, as shown in Figs. 8, 11 and 13 is.

The first SCV channel 12-1 maintains the same cross-sectional shape as the end on the downstream side of the first branch intake manifold 14-1 , as shown in FIGS . 1 and 5, while the second SCV channel 12-2 maintains an elliptical cross-sectional shape that is the same cross-sectional shape as the end on the downstream side of the second branch intake manifold 14-2 , as shown in FIGS . 1 and 5.

Furthermore, a first suction port 10-1 in connection with the first SCV channel 12-1 has the shape of the downstream end formed into a circular cross-sectional shape as shown in Fig. 6, and becomes that port drawn into the shape of a taper when approaching the downstream side so as to have a small circular cross-sectional shape from a circular cross-sectional shape as shown in FIG. 1. A second intake port 10-2 in connection with the second SCV channel 12-2 has the same elliptical cross-sectional shape at the downstream end as shown in Fig. 6 and when moving forward toward the downstream end, the swirl control valve unit channel is drawn in the shape of a taper so as to have a small circular cross-sectional shape from an elliptical cross-sectional shape as shown in FIG. 1. The reference character 58 denotes a combustion chamber which is formed in the internal combustion engine 2 .

The method of operation is described below.

When the engine 2 is running, after the swirl control valve unit 8 between the cylinder head 4 and the intake or inlet manifold has been inserted into the internal combustion engine 2 6 flows intake air, which at the storage tank 22 of the intake or inlet manifold 6 from an Luftreini ger (not shown) has arrived, through the intake or intake manifold 14 down.

Intake air that has arrived at the branch wall portion 56 is smoothly divided by the branch wall portion 56 formed into a shape converging in cross section toward the upstream side, which air through the first and the first second branch intake and inlet manifold 14-1 and 14-2 flows down.

Here, the intake air that flows through the first branch intake air intake 14-1 meets the first intake port 10-1 of the intake port 10 through the first SCV channel 12-1 of the swirl control valve unit 8 , and this air is introduced into the combustion chamber 58 .

Furthermore, the intake air that passes through the second branch intake intake manifold 14-1 at the second intake port 10-2 of the intake port 10 through the second SCV channel 12 -2 of the swirl control valve unit 8 and this air is introduced into the combustion chamber 58 .

When the swirl control valve 54 located in the center of the first SCV channel 12-1 of the swirl control valve unit 8 is operated to be closed, the effective intake 16 is only on the side of the second SCV channel 12-2 , which has an elliptical cross-sectional shape to effectively create a vortex within the combustion chamber 58 .

Thereby, a part of the intake manifold 14 within the intake manifold 6 can be branched into the first and second intake manifolds 14-1 and 14-2 by the branch wall portion 56 , respectively, and can the resistance of the intake or intake air at branching can be reduced in comparison with the prior art.

Furthermore, the second SCV channel 12-2 of the swirl control valve unit 8 is formed into an elliptical cross-sectional shape, whereby a swirl can be effectively generated using the second SCV channel 12-2 , which has an elliptical cross-sectional shape when the swirl is generated becomes.

The branch wall portion 56 is integrally formed within the intake manifold 6 , whereby the constitution is not arbitrarily complicated and can be easily manufactured to maintain low cost and economy.

Furthermore, the intake manifold 6 has an intake manifold 14 , which is circular in cross section, on the side of the storage tank 22 of the intake manifold 6 , a first branching intake manifold 14- 1 , which is circular in cross-section and which branches through branch wall portion 56 , and a second branch suction duct 14-2 which is elliptical in cross-section and which has its short axis in the direction of closure to that moving the first branch suction duct 14-1 towards and away from it and having its long axis the same length as the diameter of the first branch suction duct 14-1 . The swirl control valve unit 8 has a first SCV channel 12-1 , which has the same cross-sectional shape, in connection with the first branching intake duct 14-1 and a second SCV channel 12-2 , which is an elliptical Has cross-sectional shape, which is the same cross-sectional shape, in connection with the second branch intake manifold 14-2 . The cylinder head 4 has a first intake port 10-1 in connection with the first SCV channel 12-1 and a second intake port 10-2 in connection with the second SCV channel 12-2 . This makes the cross-sectional shape of the intake duct 16 smooth so that the resistance of the intake air can be reduced and, when the swirl control valve 54 is opened, the intake air can be distributed substantially equally can what is advantageous in practical use.

The present invention is not based on the above embodiment limited form, but can be modified many times, as below is discussed.

For example, while in the above embodiment of this invention, the branch wall portion 56 is formed inside the intake manifold 6 , it should be noted that the constitution can be used in which the branch wall portion 64 is provided within the swirl control valve unit 62 is as shown in Fig. 15.

D. h., When the swirl control valve unit 62 is inserted between the cylinder head 4 and the intake or inlet manifold 6 in the engine 2, the branch wall portion 64 for branching the first and second SCV-channel 12-1 and See 12-2 of the swirl control valve unit 62 , and the branch wall portion 64 is formed into a shape converging in cross section toward the upstream, as shown in FIG. 15.

Here, the SCV-channel 12 of the swirl control valve unit 62 is branched into the first and into the second SCV-channel 12-1 and 12-2 by means of the branch wall portion 64, and the resistance of the intake air when branched, compared to that of the prior art technology are reduced, which is advantageous for practical use. Further , when the second SCV channel 12-2 formed into an elliptical cross-sectional shape is used in the swirl control valve unit 62 , the swirl can be effectively generated by the second SCV channel 12-2 having an elliptical cross-sectional shape become. Furthermore, the branch wall portion 64 is integrally formed within the swirl control valve unit 62 , whereby the formation or arrangement is not complicated and can be easily manufactured to maintain low cost and economy.

While in the embodiment ( Fig. 1) of this invention and another embodiment ( Fig. 15), the constitution or arrangement in which the branch wall portion is provided on the intake manifold or on the swirl control valve unit is used further note that an arrangement may be used in which an intermediate member 72 is provided between the intake manifold 6 and the swirl control valve unit 8 and the branch wall portion 74 is provided within the intermediate member 72 as shown in FIG . 16 is shown.

That is, the branch wall portion 74 is formed into a shape converging in cross section toward the upstream side, and an intermediate member passage 76 within the intermediate member 72 is into a first and a second intermediate member passages 76-1 and 76-2 branched by the branch wall portion 74 as shown in FIG. 16.

Then, the intermediate duct 76 within the intermediate 72 can be branched into the first and second intermediate duct 76-1 and 76-2 by the branch wall portion 74 , and the resistance of the intake air when branched can be compared with be reduced from that of the prior art, which is advantageous in practical use. Furthermore, the branch wall portion 74 is integrally formed within the intermediate member 72 , whereby the intake manifold 6 and the swirl control valve unit 8 can be used without being deformed. When the second SCV channel, which is formed into an elliptical cross-sectional shape, is used, the vortex can be generated effectively by means of the second SCV channel, which has an elliptical cross-sectional shape. The arrangement or training is not complicated and can be easily manufactured to maintain low costs and economy.

Further, it is possible to use an arrangement in which, as shown in Fig. 17, a branch wall portion 82 for branching the swirl control valve channel 12 within the swirl control valve unit 8 into independent first and second swirl control valve channels 12-1 and 12-2 are provided. A branch support member 84 having a cross-sectional shape converging toward the upstream side is attached to the upstream end of the branch wall portion 82 .

The branching support element 84 is provided on a thin-walled intermediate element 86 , for example on a seal, and projects from the thin-walled intermediate element 86 on the side of the intake manifold 6 .

Here, the branching support member 84 , which is formed separately, is used, whereby it is not necessary at all to deform the intake manifold 6 and the swirl control valve unit 8 . It is possible to cope quickly with the change in design. The constitution and arrangement is not arbitrarily complicated and can be easily manufactured to maintain low cost and economy. When the second SCV channel formed into an elliptical cross-sectional shape of the swirl control valve unit 8 is used, the swirl can be generated effectively, and the attachment operation for the branching support member 84 is easy, which is advantageous in practical use .

Instead of interposing the thin-walled intermediate member 86 over the entire area between the intake manifold 6 and the swirl control valve unit 8 , when the branch wall portion 84 is attached, the thin-walled intermediate member 86 can only be between the independent first and second swirlers. Control valve channels 12-1 and 12-2 are used to prevent the branching support member 84 from falling down.

Although a particularly preferred embodiment of the invention is described in detail For explanatory purposes, it should be noted that changes conditions and modifications of the disclosed device, including another wide arrangement of parts, within the scope of the present inven manure.

Claims (12)

1. Intake or intake device for an internal combustion engine with a 2-valve intake or intake system, which has two intake or intake valves per cylinder, and with a swirl control valve unit ( 8 ) between a cylinder head ( 4th ) and a suction or inlet distributor ( 6 ) is used, comprising: a branching wall area ( 56 ) which forms part of a suction or inlet distributor channel ( 14 ) within the suction or inlet distributor ( 6 ) in the first and second branch intake manifold ( 14-1 , 14-2 ) branches corresponding to the number of intake valves per cylinder, independent first and second swirl control valve channels ( 12-1 , 12-2 ) which within the Vortex control valve unit ( 8 ) are provided in connection with the first and second branch intake and inlet manifold channels ( 14-1 , 14-2 ), the cross-sectional shape of the first vortex control valve channel ( 12-1 ) in a kr is formed in an ice-like shape and the cross-sectional shape of the second swirl control valve channel ( 12-2 ) is formed in an elliptical shape. 2. An intake device for an internal combustion engine according to claim 1, wherein the intake manifold ( 14 ) comprises a circular cross-sectional shape on one side of a storage tank ( 22 ) of the intake manifold ( 6 ), wherein the first branch intake manifold ( 14-1 ), which has a circular cross-sectional shape, is branched by means of the branch wall portion ( 56 ) and the second branch intake manifold ( 14-2 ), which is an elliptical Cross-sectional shape, a short diameter (DS) along a path that extends through and away from the center of the first branch intake manifold ( 14-1 ) and a long diameter (DL) that is the same length how the diameter of the first branch suction or inlet manifold ( 14-1 ) has; the first swirl control valve channel ( 12-1 ), which has the same cross-sectional shape, in connection with the first branch suction or inlet manifold ( 14-1 ) and the second swirl control valve channel ( 12-2 ), which have the same cross-sectional shape communicates with the second branch intake manifold ( 14-2 ); and the cylinder head ( 4 ) which has a first intake port ( 10-1 ) in communication with the first swirl control valve passage ( 12-1 ), and a second intake port ( 10- 2 ), which is connected to the second swirl control valve channel ( 12-2 ). 3. Intake or intake device for an internal combustion engine with an intake or intake valve system, which has two intake or intake valves per cylinder, and with a swirl control valve unit ( 8 ), which is between a cylinder head ( 4 ) and an intake. or inlet distributor ( 6 ) is used, comprising: a branching wall area ( 56 ), which has a cross-sectional shape converging towards an upstream side, for branching a swirl control valve channel ( 12 ) within the swirl control valve unit ( 8 ) in the first and second swirl control valve channels ( 12-1 , 12-3 ) according to the number of intake and intake valves per cylinder. 4. Intake or intake device for an internal combustion engine with an intake or intake valve system, which has two intake or intake valves per cylinder, and with a swirl control valve unit ( 8 ), which is between a cylinder head ( 4 ) and an intake. or inlet distributor ( 6 ) is used, comprising: an intermediate element ( 72 ) which is provided between the intake or inlet distributor ( 6 ) and the swirl control valve unit ( 8 ) and which has a branching wall region ( 74 ), which is equipped with a cross-sectional shape converging towards an upstream side, for branching an intermediate element channel ( 76 ) within the intermediate element ( 72 ) into first and second intermediate element channels ( 76-1 , 76-2 ) corresponding to the number of suction or Intake valves per cylinder. 5. intake or intake device for an internal combustion engine with a 2-valve intake or intake system, which has two intake or intake valves per cylinder, and with a swirl control valve unit ( 8 ), which is between a cylinder head ( 4th ) and an intake or inlet manifold ( 6 ) is used, comprising: a branching wall area ( 56 ) which has a swirl control valve channel ( 12 ) within the swirl control valve unit ( 8 ) in independent first and second swirl control valve channels ( 12-1 , 12-2 ) branches according to the number of intake and intake valves per cylinder, and a branching sub support member ( 84 ) having a cross-sectional shape converging toward an upstream side and that on an upstream side the branch wall portion ( 56 ) of the swirl control valve unit ( 8 ) is attached. 6. An intake device for an internal combustion engine according to claim 3, wherein the cross-sectional shape of the second swirl control valve channel ( 12-2 ) comprises an elliptical shape. 7. An intake device for an internal combustion engine according to claim 4, wherein the cross-sectional shape of the second intermediate element channel ( 76-2 ) comprises an elliptical shape. 8. An intake device for an internal combustion engine according to claim 5, wherein the second swirl control valve channel ( 12-2 ) comprises an elliptical shape. 9. Intake or intake system for an internal combustion engine with at least two valves per cylinder and with a swirl control valve unit ( 8 ) which is inserted between a cylinder head ( 4 ) and an intake or intake manifold ( 6 ), comprising:
an intake duct ( 16 ) which extends through the intake manifold ( 6 ), the swirl control unit ( 8 ) and the cylinder head ( 4 ), a branching wall area ( 56 ) which the Suction or inlet channel ( 16 ) into at least first and second branch suction or inlet channels ( 16-1 , 16-2 ) along a length thereof;
wherein the first branch suction duct ( 16-1 ) has a circular cross-sectional shape and the second branch suction duct ( 16-2 ) has an elliptical cross-sectional shape at least at a downstream end thereof. 10. intake system for an internal combustion engine according to claim 9, wherein the branch wall region ( 56 ) comprises a part of the intake manifold ( 6 ). 11. An intake system for an internal combustion engine according to claim 9, wherein the branch wall region ( 56 ) comprises a part of the swirl control valve unit ( 8 ). 12. Intake system according to claim 10, wherein the second branching intake duct ( 16-2 ) has a circular cross-sectional shape where the branch wall region ( 56 ) begins, the intake duct ( 16 ), the second intake duct ( 16-2 ) is tapered to form the elliptical cross-sectional shape that has a long diameter with the same length corresponding to the diameter of the first branch intake duct ( 16-1 ) having.