CN204827718U - Engine exhaust is circulation canal valve again - Google Patents
Engine exhaust is circulation canal valve again Download PDFInfo
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- CN204827718U CN204827718U CN201520599652.1U CN201520599652U CN204827718U CN 204827718 U CN204827718 U CN 204827718U CN 201520599652 U CN201520599652 U CN 201520599652U CN 204827718 U CN204827718 U CN 204827718U
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- valve
- valve rod
- exhaust
- hole
- blind hole
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Abstract
The utility model provides an engine exhaust is circulation canal valve again, includes valve rod and valve seat circle, valve rod and valve seat circle take shape through the forging and pressing is integrative. Be equipped with 2-3 rings of sealing washer mounting grooves on valve rod hole contacting area's the excircle in valve rod and valve cap body, the sealing washer is installed at the sealing washer mounting groove, and the sealing washer is used for strengthening valve rod hole contacting area's in valve rod and the valve cap body leakproofness, prevents that engine exhaust from revealing out the cylinder head. Be equipped with the blind hole in the pole portion of valve rod, the blind hole is used for alleviateing the weight of whole valve, impact load when reducing the valve and taking a seat. The tail end of valve rod pole portion blind hole is equipped with the screw hole, is connected with external device through the screw hole.
Description
Technical field
The utility model 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 purpose of this utility model be overcome prior art above-mentioned deficiency and a kind of engine exhaust recirculation line valve is provided.
The technical solution of the utility model 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 utility model 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 utility model 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;
The channel valve structural representation that accompanying drawing 3 provides for the utility model;
The working state schematic representation of the channel valve that accompanying drawing 4 provides for the utility model 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 |
|---|---|---|---|
| CN201520599652.1U CN204827718U (en) | 2015-08-11 | 2015-08-11 | Engine exhaust is circulation canal valve again |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520599652.1U CN204827718U (en) | 2015-08-11 | 2015-08-11 | Engine exhaust is circulation canal valve again |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204827718U true CN204827718U (en) | 2015-12-02 |
Family
ID=54685327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520599652.1U Active CN204827718U (en) | 2015-08-11 | 2015-08-11 | Engine exhaust is circulation canal valve again |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204827718U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003362A (en) * | 2015-08-11 | 2015-10-28 | 湖南天雁机械有限责任公司 | Valve for engine exhaust gas recirculation path |
| CN107859544A (en) * | 2017-10-27 | 2018-03-30 | 江苏金山动力科技有限公司 | A kind of valve guide bushing of fast cooling |
-
2015
- 2015-08-11 CN CN201520599652.1U patent/CN204827718U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003362A (en) * | 2015-08-11 | 2015-10-28 | 湖南天雁机械有限责任公司 | Valve for engine exhaust gas recirculation path |
| CN107859544A (en) * | 2017-10-27 | 2018-03-30 | 江苏金山动力科技有限公司 | A kind of valve guide bushing of fast cooling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |