CN105221297A - A kind of exhaust pressure relief structure being applied to electric EGR valve - Google Patents
A kind of exhaust pressure relief structure being applied to electric EGR valve Download PDFInfo
- Publication number
- CN105221297A CN105221297A CN201510769040.7A CN201510769040A CN105221297A CN 105221297 A CN105221297 A CN 105221297A CN 201510769040 A CN201510769040 A CN 201510769040A CN 105221297 A CN105221297 A CN 105221297A
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- China
- Prior art keywords
- egr valve
- vent
- guide sleeve
- electric egr
- valve body
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The invention discloses 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.The present invention can protect seal ring, extends 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.
Description
Technical field
The present invention 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 technical issues that need to address of the present invention 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, the technical solution used in the present invention 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, the invention technological progress is as follows.
The present invention 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 invention;
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 present invention 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 present invention 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.
Working principle of the present invention 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 |
|---|---|---|---|
| CN201510769040.7A CN105221297A (en) | 2015-11-12 | 2015-11-12 | A kind of exhaust pressure relief structure being applied to electric EGR valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510769040.7A CN105221297A (en) | 2015-11-12 | 2015-11-12 | A kind of exhaust pressure relief structure being applied to electric EGR valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105221297A true CN105221297A (en) | 2016-01-06 |
Family
ID=54990498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510769040.7A Pending CN105221297A (en) | 2015-11-12 | 2015-11-12 | A kind of exhaust pressure relief structure being applied to electric EGR valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105221297A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1122562A (en) * | 1997-07-01 | 1999-01-26 | Hino Motors Ltd | Exhaust gas recirculation device |
| US20100243938A1 (en) * | 2009-03-31 | 2010-09-30 | Keihin Corporation | Fluid passage valve and method of assembling same |
| CN102230430A (en) * | 2011-06-03 | 2011-11-02 | 浙江九隆机械有限公司 | EGR (Exhaust Gas Recirculation) valve |
| CN104100418A (en) * | 2014-07-08 | 2014-10-15 | 无锡隆盛科技股份有限公司 | Pressure relief structure of electric EGR (exhaust gas recirculation) valve |
-
2015
- 2015-11-12 CN CN201510769040.7A patent/CN105221297A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1122562A (en) * | 1997-07-01 | 1999-01-26 | Hino Motors Ltd | Exhaust gas recirculation device |
| US20100243938A1 (en) * | 2009-03-31 | 2010-09-30 | Keihin Corporation | Fluid passage valve and method of assembling same |
| CN102230430A (en) * | 2011-06-03 | 2011-11-02 | 浙江九隆机械有限公司 | EGR (Exhaust Gas Recirculation) valve |
| CN104100418A (en) * | 2014-07-08 | 2014-10-15 | 无锡隆盛科技股份有限公司 | Pressure relief structure of electric EGR (exhaust gas recirculation) valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160106 |
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| WD01 | Invention patent application deemed withdrawn after publication |