CN205101142U - Be applied to exhaust pressure release structure of electronic EGR valve - Google Patents
Be applied to exhaust pressure release structure of electronic EGR valve Download PDFInfo
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- CN205101142U CN205101142U CN201520898604.2U CN201520898604U CN205101142U CN 205101142 U CN205101142 U CN 205101142U CN 201520898604 U CN201520898604 U CN 201520898604U CN 205101142 U CN205101142 U CN 205101142U
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- egr valve
- valve body
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- exhaust pressure
- guide sleeve
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Abstract
The utility model discloses a be applied to exhaust pressure release structure of electronic EGR valve, including setting up the air vent on electronic EGR valve uide bushing, the inner intercommunication uide bushing of air vent sets up the internal channel of centibar, is provided with valve body air guide hole on the valve body that corresponds with the air vent outer end, air vent and valve body air guide hole constitute intercommunication uide bushing internal channel and the external air conduction channel of valve body. The utility model discloses can protect the sealing washer, prolong the life of sealing washer, guarantee electronic EGR valve and can normally work under adverse circumstances for a long time.
Description
Technical field
The utility model relates to technical field of automobile engine, the exhaust pressure relief structure particularly in a kind of EGR valve.
Background technique
The principle of gas recirculation system is after being mixed with fresh air by the part high-temp waste gas that motor is discharged, and introduces gas handling system and participates in burning again, thus improve combustion performance, to reduce NO in engine exhaust
xformation and the discharge amount of refuse, reduce the pollution to air.
Electric EGR valve is one and installs and be used for the electromechanical integrated product of the amount of exhaust gas recirculation controlling to feed back to gas handling system on the engine, be that Exhaust gas recirculation device can normally work most important, most crucial parts, the reliable and stable work of electric EGR valve directly affects the ride quality of motor.But in actual moving process, valve rod due to EGR valve needs to carry out in the presence of a harsh environment moving back and forth or rotary motion for a long time, easily cause burnup particulate matter or the clean petrol and diesel oil of unburned to be axially leaked to valve body outside to leak, affect the normal operation of valve; Therefore the sealing configuration in EGR valve on valve rod just plays very important effect to the leakage of EGR valve.Traditional valve stem seal mode be at the two ends being up and down positioned at guide sleeve respectively setting-in together with the seal ring of center-pole interference fit, stop the generation of leakage.But in electric EGR valve running, seal ring was once lose efficacy, and superheated vapor and the waste gas with corrosion will enter the inner chamber of EGR valve, produce corrosion failure, thus cause whole transmission system to lose efficacy to the component in body cavity.If design a kind of structure can protected seal ring, inherently extend the working life of seal ring, just can ensure that electric EGR valve can normally work for a long time in the presence of a harsh environment.
Summary of the invention
The utility model technical issues that need to address are to provide and are a kind ofly applied to the exhaust pressure relief structure can protected seal ring in electric EGR valve, to extend the working life of seal ring, ensure that electric EGR valve can normally work for a long time in the presence of a harsh environment.
For solving the problems of the technologies described above, technical solution adopted in the utility model is as follows.
A kind of exhaust pressure relief structure being applied to electric EGR valve, comprise the vent be arranged on electric EGR valve guide sleeve, the inner of vent is communicated with the internal channel that guide sleeve arranges center-pole, the valve body corresponding with vent outer end is provided with valve body gas port, described vent forms with valve body gas port the air guide channel being communicated with guide sleeve internal channel and the valve body external world.
Above-mentioned a kind of exhaust pressure relief structure being applied to electric EGR valve, described vent is horizontally set on the guide sleeve below second seal ring.
Above-mentioned a kind of exhaust pressure relief structure being applied to electric EGR valve, described vent is provided with four altogether, and four vents become criss-cross construction to arrange.
Above-mentioned a kind of exhaust pressure relief structure being applied to electric EGR valve, the below that vent outer end is close to by described guide sleeve is provided with the O RunddichtringO preventing gas from refluxing at valve inner.
Owing to have employed above technological scheme, acquired by the utility model, technological progress is as follows.
The utility model can effectively be discharged to High Temperature High Pressure waste gas and the tiny particulate matter of part in air, engine exhaust is stoped to enter EGR valve inside cavity, effectively prevent the destruction of high pressure exhaust gas to seal ring teflon part and driving and transmission component, extend the working life of seal ring, improve the reliability of electric EGR valve, provide guarantee for electric EGR valve can normally work for a long time in the presence of a harsh environment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that the A-A of guide sleeve is to sectional view.
Wherein: 1. center-pole, 2. second seal ring, 3. valve body gas port, 4.O RunddichtringO, 5. guide sleeve, 51. internal channels, 52. vents, 6. first seal ring, 7. body cavity.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further elaborated.
A kind of exhaust pressure relief structure being applied to electric EGR valve, comprise the vent be arranged on electric EGR valve guide sleeve 5, the inner of vent is communicated with the internal channel that guide sleeve arranges center-pole, the valve body corresponding with vent outer end is provided with valve body gas port 3, vent forms with valve body gas port the air guide channel being communicated with guide sleeve internal channel and the valve body external world.In the present embodiment, vent is provided with four altogether, on the guide sleeve that four vents become criss-cross construction to be arranged on below second seal ring, as shown in Figure 2.
The utility model refluxes at valve inner for preventing gas, and the below being close to vent outer end at guide sleeve is provided with O RunddichtringO 4, as shown in Figure 1.
Utility model works principle is: in electric EGR valve running, part high-temp waste gas can moving back and forth along center-pole, by on guide sleeve first to after seal ring 6, enter the criss-crossing air guide channel on guide sleeve, because valve body gas port directly leads to air, according to the characteristic that pressurized gas flow to low pressure direction, pressurized gas in valve body can directly be discharged to valve body outside, achieve exhaust pressure relief function, protect second seal ring, effectively prevent oil, water, gas enters body cavity 7, protect the component of valve inner further, improve valve reliability of operation and working life.
Claims (4)
1. one kind is applied to the exhaust pressure relief structure of electric EGR valve, it is characterized in that: comprise the vent be arranged on electric EGR valve guide sleeve (5), the inner of vent is communicated with the internal channel that guide sleeve arranges center-pole, the valve body corresponding with vent outer end is provided with valve body gas port (3), described vent forms with valve body gas port the air guide channel being communicated with guide sleeve internal channel and the valve body external world.
2. a kind of exhaust pressure relief structure being applied to electric EGR valve according to claim 1, is characterized in that: described vent is horizontally set on the guide sleeve below second seal ring.
3. a kind of exhaust pressure relief structure being applied to electric EGR valve according to claim 1, it is characterized in that: described vent is provided with four altogether, four vents become criss-cross construction to arrange.
4. a kind of exhaust pressure relief structure being applied to electric EGR valve according to any one of claims 1 to 3, is characterized in that: the below that vent outer end is close to by described guide sleeve is provided with the O RunddichtringO (4) preventing gas from refluxing at valve inner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520898604.2U CN205101142U (en) | 2015-11-12 | 2015-11-12 | Be applied to exhaust pressure release structure of electronic EGR valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520898604.2U CN205101142U (en) | 2015-11-12 | 2015-11-12 | Be applied to exhaust pressure release structure of electronic EGR valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205101142U true CN205101142U (en) | 2016-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520898604.2U Active CN205101142U (en) | 2015-11-12 | 2015-11-12 | Be applied to exhaust pressure release structure of electronic EGR valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN205101142U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11598233B2 (en) * | 2018-07-11 | 2023-03-07 | Bayerische Motoren Werke Aktiengesellschaft | Diagnosable connector device of a ventilating device for an internal combustion engine |
-
2015
- 2015-11-12 CN CN201520898604.2U patent/CN205101142U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11598233B2 (en) * | 2018-07-11 | 2023-03-07 | Bayerische Motoren Werke Aktiengesellschaft | Diagnosable connector device of a ventilating device for an internal combustion engine |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |