CN105003362A - Valve for engine exhaust gas recirculation path - Google Patents
Valve for engine exhaust gas recirculation path Download PDFInfo
- Publication number
- CN105003362A CN105003362A CN201510488177.5A CN201510488177A CN105003362A CN 105003362 A CN105003362 A CN 105003362A CN 201510488177 A CN201510488177 A CN 201510488177A CN 105003362 A CN105003362 A CN 105003362A
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- China
- Prior art keywords
- valve
- valve rod
- exhaust
- valve stem
- seal ring
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Abstract
A valve for an engine exhaust gas recirculation path comprises a valve stem and a valve seat ring, wherein the valve stem and the valve seat ring are integrally formed through forging and pressing; 2-3 circles of seal ring mounting grooves are formed in an excircle at a part, contacted with a valve stem hole in a valve cover body, of the valve stem, and seal rings are mounted in the seal ring mounting grooves and used for enhancing the sealing performance of part, contacted with the valve stem hole in the valve cover body, of the valve stem and preventing tail gas of an engine from leaking out of a cylinder cover; a blind hole is formed in a stem part of the valve stem and used for reducing the weight of the whole valve and reducing the impact load of the valve during seating; a threaded hole is formed in the tail end of the blind hole in the stem part of the valve stem, and the valve stem is connected with an external device through the threaded hole.
Description
Technical field
The present invention relates to a kind of technical field of engines, particularly a kind of valve on engine exhaust recirculation line.
Background technique
Motor exhaust pollutant mainly comprises: carbon monoxide, hydrocarbon, oxynitrides, sulfur dioxide, soot dust granule (some heavy metal compound, lead compound, black smoke and mist of oil), foul smell (formaldehyde etc.).Along with growing with each passing day of automobile pollution, the harm of motor exhaust to human health and the pollution to environment are also with increasing intensity daily, to this, corresponding rule and standard have all been formulated in countries in the world, to automobile noxious emission is controlled in lower level, in order to meet emission standard, must purify to motor exhaust the Exhaust gas purifying device being arranged on external engine has multiple, such as TAC system, secondary air injection system, catalyst and exhaust gas recycling system etc.
Exhaust gas recirculatioon refers to that the partial tail gas motor is discharged can deliver to intake valve manifold, and again enters cylinder together with incoming mixture, and the exhausted air quantity of recirculation is controlled automatically by exhaust-gas-recirculation valve.Channel valve in existing exhaust gas recycling system and valve cap working state are as shown in Figure 1, channel valve 1 is arranged in the intrinsic valve rod hole of valve cap 2, the intrinsic exhaust gas recirculation passages 2-2 of valve cap 2 is connected with intake valve manifold, and the other end is connected with exhaust valve.
When exhaust-gas-recirculation valve is opened, opened by exhaust-gas-recirculation valve control channel valve 1, the tail gas that motor is discharged enters from the suction port 2-1 valve cap 2, part tail gas enters intake manifold through exhaust gas recirculation passages 2-2, be exhausted recirculation, another part tail gas is discharged through exhaust valve, and exhaust-gas-recirculation valve is once close, and exhaust gas recirculatioon stops immediately.
Existing channel valve 1 as shown in Figure 2, comprises valve rod 1-1 and valve seat ring 1-2, valve rod 1-1 and valve seat ring 1-2 integrally formed by forging and stamping, is provided with the annular slot 1-1-1 be connected with external means at the tail end of valve rod 1-1.
There is following problem in existing channel valve:
1, the bar portion of channel valve is solid, Heavy Weight, and during work, inertial force increases, and when taking a seat, impact load increases, and not only increase the wearing and tearing of valve seat ring, noise is also large;
2, the bar portion of channel valve and valve cap intrinsic valve rod hole sealing poor, easily cause motor exhaust to leak out cylinder head;
3, channel valve is connected with external means by the annular slot of bar portion tail end, and this linkage structure is not firm, is easily out of order at work.
Summary of the invention
The object of the invention is to overcome the above-mentioned deficiency of prior art and a kind of engine exhaust recirculation line valve is provided.
Technological scheme of the present invention is: a kind of engine exhaust recirculation line valve, comprises valve rod and valve seat ring, and it is integrally formed that valve rod and valve seat ring pass through forging and stamping.
The cylindrical of valve rod and valve cap body internal valve rod aperture contact position is provided with 2 ~ 3 and encloses seal ring mounting groove, seal ring is arranged on seal ring mounting groove, seal ring is used for strengthening the sealing of valve rod and valve cap body internal valve rod aperture contact position, prevents motor exhaust from leaking out cylinder head.
Be provided with blind hole in the bar portion of valve rod, blind hole is used for alleviating the weight of whole valve, reduces impact load when valve is taken a seat.
The tail end of valve rod bar portion blind hole is provided with tapped hole, is connected with external means by tapped hole.
During use, channel valve is arranged in the intrinsic valve rod hole of valve cap, the intrinsic exhaust gas recirculation passages of valve cap is connected with intake valve manifold, the other end is connected with exhaust valve, channel valve is connected with external means by the tapped hole of valve rod tail end, drives channel valve to move up and down in the valve rod hole of valve cap control to enter the tail gas amount of motor by exhaust-gas-recirculation valve control external means.
When exhaust-gas-recirculation valve is opened, by exhaust-gas-recirculation valve control channel valve open, the tail gas that motor is discharged enters from the suction port valve cap, part tail gas enters intake manifold through exhaust gas recirculation passages, be exhausted recirculation, another part tail gas is discharged through exhaust valve, and exhaust-gas-recirculation valve is once close, and exhaust gas recirculatioon stops immediately.
The present invention compared with prior art has following features:
1, be provided with seal ring at valve rod, enhance the sealing of valve rod and valve cap body internal valve rod aperture contact position, prevent motor exhaust from leaking out cylinder head.
2, the bar portion of valve rod is hollow, alleviates the weight of whole valve, decreases impact load when valve is taken a seat.
3, the tail end of valve rod is provided with tapped hole, is connected with external means by tapped hole, strengthens the connection reliability of valve and external means.
Below in conjunction with the drawings and specific embodiments, detailed construction of the present invention is further described.
Accompanying drawing explanation
Accompanying drawing 1 is the working state schematic representation of existing channel valve and valve cap;
Accompanying drawing 2 is existing channel valve structural representation;
Accompanying drawing 3 is channel valve structural representation provided by the invention;
Accompanying drawing 4 is the working state schematic representation of channel valve provided by the invention and valve cap.
Embodiment
A kind of engine exhaust recirculation line valve, comprises valve rod 1-1 and valve seat ring 1-2, valve rod 1-1 and valve seat ring 1-2 integrally formed by forging and stamping.
The cylindrical of valve rod 1-1 and valve cap 2 body internal valve rod aperture contact position is provided with 3 circle seal ring mounting groove 1-1-2, seal ring 3 is arranged on seal ring mounting groove 1-1-2, seal ring 3 is used for strengthening the sealing of valve rod 1-1 and valve cap 2 body internal valve rod aperture contact position, prevents motor exhaust from leaking out cylinder head.
Be provided with blind hole 1-1-3 in the bar portion of valve rod 1-1, blind hole 1-1-3 is used for alleviating the weight of whole valve, reduces impact load when valve is taken a seat.
The tail end of valve rod 1-1 bar portion blind hole 1-1-3 is provided with tapped hole 1-1-4, is connected with external means by tapped hole 1-1-4.
During use, channel valve 1 is arranged in the intrinsic valve rod hole of valve cap 2, the intrinsic exhaust gas recirculation passages 2-2 of valve cap 2 is connected with intake valve manifold, the other end is connected with exhaust valve, channel valve 1 is connected with external means by the tapped hole 1-1-4 of valve rod 1-1 tail end, drives channel valve 1 to move up and down in the valve rod hole of valve cap 2 control to enter the tail gas amount of motor by exhaust-gas-recirculation valve control external means.
When exhaust-gas-recirculation valve is opened, opened by exhaust-gas-recirculation valve control channel valve 1, the tail gas that motor is discharged enters from the suction port 2-1 valve cap 2, part tail gas enters intake manifold through exhaust gas recirculation passages 2-2, be exhausted recirculation, another part tail gas is discharged through exhaust valve, and exhaust-gas-recirculation valve is once close, and exhaust gas recirculatioon stops immediately.
Claims (1)
1. an engine exhaust recirculation line valve, comprises valve rod and valve seat ring, and it is integrally formed that valve rod and valve seat ring pass through forging and stamping, it is characterized in that:
The cylindrical of valve rod and valve cap body internal valve rod aperture contact position is provided with 2 ~ 3 and encloses seal ring mounting groove, seal ring is arranged on seal ring mounting groove, seal ring is used for strengthening the sealing of valve rod and valve cap body internal valve rod aperture contact position, prevents motor exhaust from leaking out cylinder head;
Be provided with blind hole in the bar portion of valve rod, blind hole is used for alleviating the weight of whole valve, reduces impact load when valve is taken a seat;
The tail end of valve rod bar portion blind hole is provided with tapped hole, is connected with external means by tapped hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510488177.5A CN105003362A (en) | 2015-08-11 | 2015-08-11 | Valve for engine exhaust gas recirculation path |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510488177.5A CN105003362A (en) | 2015-08-11 | 2015-08-11 | Valve for engine exhaust gas recirculation path |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105003362A true CN105003362A (en) | 2015-10-28 |
Family
ID=54376179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510488177.5A Pending CN105003362A (en) | 2015-08-11 | 2015-08-11 | Valve for engine exhaust gas recirculation path |
Country Status (1)
| Country | Link |
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| CN (1) | CN105003362A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111980775A (en) * | 2019-05-23 | 2020-11-24 | 马勒国际有限公司 | Gas exchange valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201106507Y (en) * | 2007-10-01 | 2008-08-27 | 绵阳新晨动力机械有限公司 | Internal combustion engine exhaust gas recirculation valve |
| JP4390291B1 (en) * | 2008-09-18 | 2009-12-24 | 株式会社 吉村カンパニー | Method for manufacturing valve head part of hollow engine valve and hollow engine valve |
| CN104165074A (en) * | 2014-09-01 | 2014-11-26 | 湖南天雁机械有限责任公司 | Hollow rod engine valve with internal threads |
| CN204827718U (en) * | 2015-08-11 | 2015-12-02 | 湖南天雁机械有限责任公司 | Engine exhaust is circulation canal valve again |
-
2015
- 2015-08-11 CN CN201510488177.5A patent/CN105003362A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201106507Y (en) * | 2007-10-01 | 2008-08-27 | 绵阳新晨动力机械有限公司 | Internal combustion engine exhaust gas recirculation valve |
| JP4390291B1 (en) * | 2008-09-18 | 2009-12-24 | 株式会社 吉村カンパニー | Method for manufacturing valve head part of hollow engine valve and hollow engine valve |
| CN102159799A (en) * | 2008-09-18 | 2011-08-17 | 三菱重工业株式会社 | Method of manufacturing umbrella portion of hollow engine valve, and hollow engine valve |
| CN104165074A (en) * | 2014-09-01 | 2014-11-26 | 湖南天雁机械有限责任公司 | Hollow rod engine valve with internal threads |
| CN204827718U (en) * | 2015-08-11 | 2015-12-02 | 湖南天雁机械有限责任公司 | Engine exhaust is circulation canal valve again |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111980775A (en) * | 2019-05-23 | 2020-11-24 | 马勒国际有限公司 | Gas exchange valve |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151028 |
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| WD01 | Invention patent application deemed withdrawn after publication |