CN208982189U - A kind of bypass valve arrangement for gas recirculation system - Google Patents
A kind of bypass valve arrangement for gas recirculation system Download PDFInfo
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- CN208982189U CN208982189U CN201821390468.6U CN201821390468U CN208982189U CN 208982189 U CN208982189 U CN 208982189U CN 201821390468 U CN201821390468 U CN 201821390468U CN 208982189 U CN208982189 U CN 208982189U
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Abstract
The utility model discloses a kind of bypass valve arrangements for gas recirculation system, including shell and it is mounted on the intracorporal valve block of shell, valve rod, the actuator of driving stem rotation is installed on shell, valve block is mounted on valve rod and rotates synchronously with valve rod, when so that valve block is located at first position after valve rod rotation, the air inlet of by-passing valve is connected in the open state with gas outlet, when so that valve block is located at the second position after valve rod rotation, the air inlet of by-passing valve is not connected to gas outlet to be in close state, valve block is butterfly-type valve block, the middle part of butterfly-type valve block and valve rod are integrally welded, partition groove is provided in shell, intermediate bulkhead is installed in partition groove, valve block is tight against on intermediate bulkhead when valve block is located at first position, valve block is tight against in the inside of shell when valve block is located at the second position.Using the design of butterfly valve block, the torque that the high pressure exhaust gas of by-passing valve valve block two sides generates is cancelled out each other, and the torque needed when opening or closing by-passing valve is smaller.
Description
Technical field
The utility model relates to automobile technical fields, and in particular to a kind of by-passing valve knot for gas recirculation system
Structure.
Background technique
Gas recirculation system refers to the exhaust gas being discharged that automobile engine is burnt, and guidance to inlet manifold participates in burning
To reduce chamber temperature, and then a kind of system of improvement burning situation reduction oxynitrides discharge of poisonous waste.The system
It substantially include EGR (Exhaust Gas Recirculation；Gas recirculation system) valve, by-passing valve, three, cooler be main
Component.Wherein, the effect of by-passing valve is that cooler heat exchange can be avoided, and is introduced directly into the high-temp waste gas of EGR valve to air inlet
Manifold reduces low temperature, low speed discharge of poisonous waste, while improving the fuel economy of low speed, underload to reach acceleration heat engine
Purpose.In the related technology, the valve structure design and installation layout of traditional by-passing valve is more general, and by-passing valve valve block is single
Side valve piece, valve block two sides gas pressure cannot balance, and need high torque in the valve block for opening or closing by-passing valve；And it sends out
There are pressure pulses for motivation exhaust, the valve block of by-passing valve can be caused to generate resonance, valve block is not closed completely, and eventually results in amount of leakage
Larger or abnormal sound, influences engine performance.
Utility model content
It is more reasonable that the technical problems to be solved in the utility model is to provide a kind of valve structure design and installation layout,
To the lesser bypass valve arrangement of engine performance impacts.
The technical solution of the utility model is to provide a kind of bypass valve arrangement for gas recirculation system, including shell
Body and it is mounted on the intracorporal valve block of shell, valve rod, the actuator of driving stem rotation, the valve block peace are installed on the shell
Rotated synchronously on valve rod with valve rod, when the valve rod rotation after so that the valve block is located at first position when, by-passing valve into
Port be connected to gas outlet it is in the open state, when the valve rod rotation after so that the valve block is located at the second position when, by-passing valve
Air inlet be not connected to and be in close state with gas outlet, the valve block is butterfly-type valve block, the middle part of the butterfly-type valve block and institute
It is integrally welded to state valve rod, partition groove is provided in the shell, intermediate bulkhead, the valve are installed in the partition groove
Piece is located at when first position that the valve block is tight against on the intermediate bulkhead, and the valve block is tight when the valve block is located at the second position
It is against the inside of the shell.
The bypass valve arrangement for having the beneficial effect that the application of technical solutions of the utility model is applied to the exhaust gas of engine again
The circulatory system, using the design of butterfly valve block, compared to traditional unilateral valve block, in the application scenarios of gas recirculation system
In, the torque that the high pressure exhaust gas of by-passing valve valve block two sides generates is cancelled out each other, the torque needed when opening or closing by-passing valve compared with
It is small.When valve rod rotation makes valve block be located at first position, valve block side, which resists intermediate bulkhead, is connected by-passing valve, rotates in valve rod
When valve block being made to be located at the second position, valve block side, which resists case inside, closes by-passing valve, and the design layout of valve block can mitigate
Valve block resonance, valve block is more tight when closing, and mitigates leakage rate and the influence to engine performance.
Further, Upper shaft sleeve and Lower shaft sleeve positioned opposite are installed, the top of the valve rod passes through on the shell
The Upper shaft sleeve carries out radial positioning, and the lower end of the valve rod carries out radial positioning by the Lower shaft sleeve.
Further, lip-shaped sealed ring is cased on the valve rod, it is close by lip type between the valve rod top and Upper shaft sleeve
Seal is sealed, and riveting has the gasket that lip-shaped sealed ring is fixed on the shell.
Further, counter sink is provided on the shell, the Lower shaft sleeve press fitting is in the counter sink, the lower axle
Cover the circlip for being equipped in the counter sink of inside and carrying out axially position to valve rod.
Further, at least one salient point is provided on the intermediate bulkhead, the intermediate bulkhead passes through the salient point mistake
It is full of and is fitted in the partition groove.
Further, the intermediate bulkhead is stainless steel pressing, and the intermediate bulkhead is trapezoidal.
Further, actuator bracket is installed, the actuator is mounted on institute by actuator bracket on the shell
It states on shell, the actuator is vacuum plastic actuator.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is that figure is moved towards in the valve structure of traditional by-passing valve and air inlet；
Fig. 2 is the basic principle figure of engine exhaust-gas recirculating system；
Fig. 3 is the EGR valve of engine exhaust-gas recirculating system and the structure chart of by-passing valve；
Fig. 4 is the location status schematic diagram of by-passing valve switch state lower disc；
Fig. 5 is the partial cutaway schematic of by-passing valve；
Fig. 6 is side view and the front view of valve block；
Fig. 7 is side view and the front view of intermediate bulkhead；
Fig. 8 is the structural schematic diagram of actuator.
Wherein, appended drawing reference are as follows:
1, shell, 2, valve block, 3, valve rod, 4, actuator, 4a, shell, 4b, lid, 4c, connecting rod, 4d, mudhole, 4e, gas
Mouth, 5, intermediate bulkhead, 6, Upper shaft sleeve, 7, Lower shaft sleeve, 8, lip-shaped sealed ring, 9, gasket, 10, circlip, 11, actuator bracket.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
Refering to Figure 1, its by-passing valve valve block is unilateral valve block, valve block two sides gas in the structure design of traditional by-passing valve
Body pressure cannot balance, and need to overcome biggish power when opening the valve block of by-passing valve.To improve above-mentioned technical problem, such as Fig. 2
Shown in~Fig. 8, the utility model provides a kind of bypass valve arrangement for gas recirculation system, including shell 1 and peace
Valve block 2, valve rod 3 in shell 1, the actuator 4 of the rotation of driving stem 3 is equipped on shell 1, and valve block 2 is mounted on valve rod 3
On rotated synchronously with valve rod 3, when so that valve block 2 is located at first position X after the rotation of valve rod 3, the air inlet of by-passing valve and gas outlet
Be connected to it is in the open state, when so that valve block 2 is located at second position Y after the rotation of valve rod 3, the air inlet of by-passing valve with gas outlet not
Connection is in close state, and in the present embodiment, as shown in the picture, valve block 2 is butterfly-type valve block, the middle part of butterfly-type valve block and valve rod 3
It is integrally welded, it is provided with partition groove in shell 1, intermediate bulkhead 5 is installed in partition groove, valve block 2 is located at first position X
When valve block 2 tight against on intermediate bulkhead 5, valve block 2 is tight against in the inside of shell 1 when valve block 2 is located at second position Y.
Specifically, the bypass valve arrangement of the application is applied to the gas recirculation system of engine, using butterfly valve block
Design, compared to traditional unilateral valve block, in the application scenarios of gas recirculation system, the high pressure of 2 two sides of by-passing valve valve block
The torque that exhaust gas generates is cancelled out each other, and the torque needed when opening or closing by-passing valve is smaller.Make valve block 2 in the rotation of valve rod 3
When first position, 2 side of valve block, which resists intermediate bulkhead 5, is connected by-passing valve, so that valve block 2 is located at second in the rotation of valve rod 3
When setting, 2 side of valve block, which resists, closes by-passing valve on the inside of shell 1, and the design layout of valve block 2 can mitigate valve block resonance, valve block 2
It is more tight when closing, mitigate leakage rate and the influence to engine performance.During actual implementation, valve block 2 has several
Welding window increases weld length and intensity, is combined together by the valve rod of laser welding and by-passing valve, reduces sub- assembly
Assembly process.In actual production process, the by-passing valve valve block of the application designs convenient for the depanning of valve chest, convenient for being made into die casting
Part, and tradition bypass valve housing can only be made into casting, cost variance is very big.Wherein, left arrow shown in Fig. 1 is bypass mould
Formula trend, right upper portion arrow are refrigerating mode trend, and lower right side arrow is air inlet to middle part is bypass valve block.Wherein, scheme
Top shown in 2 is exhaust manifold, and lower part is inlet manifold, and left part upper valve is EGR valve, and left part left end is by-passing valve, under EGR valve
Even cooler.Wherein, left side shown in Fig. 3 is EGR valve, and right side is by-passing valve.
It is improved as one of which, in the present embodiment, Upper shaft sleeve 6 and Lower shaft sleeve 7 positioned opposite is installed on shell 1,
The top of valve rod 3 carries out radial positioning by Upper shaft sleeve 6, and the lower end of valve rod 3 carries out radial positioning, Upper shaft sleeve 6 by Lower shaft sleeve 7
With 7 mating reaction of Lower shaft sleeve, the installation and limit to valve rod 3 are sufficiently stable.
It is improved as another kind, is cased with lip-shaped sealed ring 8 on valve rod 3, pass through lip type between 3 top of valve rod and Upper shaft sleeve 6
Sealing ring 8 is sealed, and riveting has the gasket 9 that lip-shaped sealed ring 8 is fixed on shell 1.
As one of embodiment, counter sink is provided on shell 1, Lower shaft sleeve 7 is pressed the Lower shaft sleeve in counter sink
The circlip 10 for carrying out axially position to valve rod 3 is installed in the counter sink of 7 insides, work that is firm and playing exhaust gas sealing is installed
With.
At least one salient point is preferably provided on intermediate bulkhead 5 as one of, intermediate bulkhead 5 passes through salient point interference
It is fitted in partition groove.Preferably, intermediate bulkhead 5 can be stainless steel stamping parts, practical as one of embodiment
Intermediate bulkhead 5 can be trapezoidal when design.
In the present embodiment, actuator bracket 11 is installed on shell 1, actuator 4 is mounted on shell by actuator bracket 11
On body 1, actuator 4 is vacuum plastic actuator.
As one of optimization design, as shown in Fig. 7, in the present embodiment, actuator 4 may include shell 4a, lid
Sub- 4b, connecting rod 4c are provided with mudhole 4d on the shell 4a of actuator 4, are provided with gas nozzle 4e on the lid 4b of actuator 4, outside
Shell 4a and lid 4b are rotatablely connected and constitute inner chamber body, one end of the connecting rod 4c of actuator 4 be rotatably installed in inner chamber body and by
External starter controls rotation at gas nozzle 4e.Tri- shell 4a, lid 4b, connecting rod 4c components can be assembled into different phases
To angle, to realize that different gas nozzles directions, connecting rod pin bore axis to the relative angular position relationship mudhole between, meet
The requirement on different application boundary.
The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to
Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to
Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and
Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (7)
1. a kind of bypass valve arrangement for gas recirculation system, including shell and it is mounted on the intracorporal valve block of shell, valve rod,
The actuator of driving stem rotation is installed, the valve block is mounted on valve rod and rotates synchronously with valve rod, works as institute on the shell
State after valve rod rotation when the valve block being made to be located at first position, the air inlet of by-passing valve be connected to gas outlet it is in the open state,
When so that the valve block is located at the second position after valve rod rotation, the air inlet of by-passing valve is not connected in closing with gas outlet
State, it is characterised in that: the valve block is butterfly-type valve block, and the middle part of the butterfly-type valve block and the valve rod are integrally welded, institute
It states and is provided with partition groove in shell, intermediate bulkhead is installed in the partition groove, the valve block is located at first position when institute
Valve block is stated tight against on the intermediate bulkhead, the valve block is located at when the second position valve block tight against in the shell
Side.
2. a kind of bypass valve arrangement for gas recirculation system according to claim 1, it is characterised in that: the shell
Upper shaft sleeve and Lower shaft sleeve positioned opposite are installed on body, the top of the valve rod carries out radial positioning by the Upper shaft sleeve,
The lower end of the valve rod carries out radial positioning by the Lower shaft sleeve.
3. a kind of bypass valve arrangement for gas recirculation system according to claim 2, it is characterised in that: the valve
It is cased with lip-shaped sealed ring on bar, is sealed between the valve rod top and Upper shaft sleeve by lip-shaped sealed ring, on the shell
Riveting has the gasket that lip-shaped sealed ring is fixed.
4. a kind of bypass valve arrangement for gas recirculation system according to claim 2, it is characterised in that: the shell
Counter sink is provided on body, the Lower shaft sleeve press fitting is equipped in the counter sink on the inside of the Lower shaft sleeve in the counter sink
The circlip of axially position is carried out to valve rod.
5. a kind of bypass valve arrangement for gas recirculation system according to claim 1, it is characterised in that: in described
At least one salient point is provided on spacing board, the intermediate bulkhead is fitted in the partition groove by the salient point interference.
6. a kind of bypass valve arrangement for gas recirculation system according to claim 5, it is characterised in that: in described
Spacing board is stainless steel pressing, and the intermediate bulkhead is trapezoidal.
7. a kind of bypass valve arrangement for gas recirculation system according to claim 1, it is characterised in that: the shell
Actuator bracket is installed, the actuator is installed on the housing by actuator bracket, and the actuator is true on body
Empty plastics actuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821390468.6U CN208982189U (en) | 2018-08-28 | 2018-08-28 | A kind of bypass valve arrangement for gas recirculation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821390468.6U CN208982189U (en) | 2018-08-28 | 2018-08-28 | A kind of bypass valve arrangement for gas recirculation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208982189U true CN208982189U (en) | 2019-06-14 |
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ID=66782514
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821390468.6U Active CN208982189U (en) | 2018-08-28 | 2018-08-28 | A kind of bypass valve arrangement for gas recirculation system |
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| Country | Link |
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| CN (1) | CN208982189U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026453A (en) * | 2018-08-28 | 2018-12-18 | 博格华纳排放系统（宁波）有限公司 | A kind of bypass valve arrangement for gas recirculation system |
-
2018
- 2018-08-28 CN CN201821390468.6U patent/CN208982189U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026453A (en) * | 2018-08-28 | 2018-12-18 | 博格华纳排放系统（宁波）有限公司 | A kind of bypass valve arrangement for gas recirculation system |
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