CN201679583U - EGR valve with central rod provided with protective cover device - Google Patents
EGR valve with central rod provided with protective cover device Download PDFInfo
- Publication number
- CN201679583U CN201679583U CN2010201514279U CN201020151427U CN201679583U CN 201679583 U CN201679583 U CN 201679583U CN 2010201514279 U CN2010201514279 U CN 2010201514279U CN 201020151427 U CN201020151427 U CN 201020151427U CN 201679583 U CN201679583 U CN 201679583U
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- CN
- China
- Prior art keywords
- central rod
- center
- pole
- valve body
- seat
- Prior art date
- 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.)
- Expired - Fee Related
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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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- Exhaust-Gas Circulating Devices (AREA)
Abstract
The utility model discloses an EGR valve with a central rod provided with a protective cover device, comprising an upper seat, a lower seat, a valve body and a valve core in the valve body, wherein the valve core is connected at the bottom end of the central rod; the top end of the central rod is connected with a film; one side of the upper seat is provided with a gas through pipe; the bottom of the valve body is a gas inlet; the position on the central rod, close to the bottom end, is provided with a filter net seat which is internally provided with a filter net; the position of the bottom end of the central rod, which is connected with the valve core, is provided with a protective cover; a carbon block is arranged above the filter net seat on the central rod; a spring is arranged between the film and the upper seat; the adopted central rod provided with the protective cover device can greatly reduce the problem of carbon accumulation of the central rod, the protective cover is coincided with the filter net seat, at the moment, the valve core is separated from the valve body, so waste gas flows in a valve body cavity, only a little amount of waste gas flows to the central rod from the gap, the accumulated carbon is very little relatively, the central rod is not easy to be clamped, the waste gas can be subject to considerable resistance when flowing in a channel between the central rod and the filter net, so the flow of the waste gas can be greatly reduced, thus reducing leakage amount, being capable of protecting the air environment and prolonging the service life of a leather film.
Description
Technical field
The utility model relates to the valve in a kind of automobile engine tail gas discharging waste gas recirculating system, also is the valve in the egr system, belongs to engine exhaust emission control gear technical field.
Background technique
The EGR valve plays the EGR gas flow and regulates control action in vehicle engine exhaust gas recirculation system.The major function of EGR valve is the size that changes magnetic force by the electric current of the vacuum electromagnetic regulator coil that changes control EGR degree of vacuum, reaches different degree of vacuum, impels EGR valve suction port switch size, thereby regulates exhaust gas flow.Make waste gas with return cylinder after fresh air mixes and carry out recirculation, be used to reduce NO
XDischarge amount.
When the vacuum chamber of EGR valve is subjected to certain negative pressure, the EGR valve is in open mode, the automobile exhaust gas outlet pipe is subjected to certain pressure discharge section waste gas and flows in the EGR valve base chamber, because waste gas is burning cmpletely not, the long-term use can form carbon deposit, is formed at the outer surface of valve base cavity and center-pole, and the filter screen of Spielpassung is stuck with it to make center-pole, produce the slack phenomenon of motion, influence the performance of EGR.
Summary of the invention
Technical problem to be solved in the utility model provides and a kind ofly prevents that center-pole is stuck and cause motion not smooth; Can reduce simultaneously the EGR valve of the leakage of the exhaust gas flow between center-pole and the filter screen.
The technical solution of the utility model is:
A kind of EGR valve of center-pole band guard apparatus, comprise the spool in the seat of honour, following, valve body, valve body, spool connects the bottom of center-pole, the top of center-pole connects film, one side at the seat of honour is provided with breathing pipe, the bottom of valve body is a suction port, be provided with the filtration reticulum near the place, bottom on the center-pole, filter in the reticulum and be provided with filter screen, center-pole bottom and spool joint are provided with guard shield.
Filter the reticulum top on the center-pole and be provided with the charcoal piece.
Be provided with spring between the film and the seat of honour.
Beneficial effect: the center-pole long-term work easily forms carbon deposit, and the filter screen of Spielpassung is stuck or motion is not smooth with it to cause center-pole; Adopt center-pole band guard apparatus can reduce the center-pole carbon-collecting problem in a large number, guard shield overlaps with filtering reticulum, and this moment, spool separated with valve body, waste gas therefrom flows in the valve body chamber, have only seldom that part waste gas flows to center-pole from the gap, carbon deposit is relatively very few, is difficult for allowing center-pole stuck.Make waste gas flow into the passage between center-pole and the filter screen, be subjected to suitable resistance, can reduce the flow of waste gas in a large number, thereby reduce leakage rate, the working life that can protect air ambient, strengthens epithelium.
Description of drawings
Fig. 1 is an EGR valve arrangement schematic representation of the prior art;
Structural representation when Fig. 2 is the utility model off position;
Structural representation when Fig. 3 is the utility model working state.
Among the figure, 1-valve body, 2-spool, 3-center-pole, 4-guard shield, 5-filter following of reticulum, 6-filter screen, 7-charcoal piece, 8-breathing pipe, 9-spring, 10-film, 11-lower cover, the 12-seat of honour, 13-.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
A kind of EGR valve of center-pole band guard apparatus, comprise the spool 2 in the seat of honour 12, following 13, valve body 1, valve body 1, spool 2 connects the bottom of center-pole 3, the top of center-pole 3 connects film 10, one side at the seat of honour 12 is provided with breathing pipe 8, the bottom of valve body 1 is a suction port, be provided with filtration reticulum 5 near the place, bottom on the center-pole 3, filter in the reticulum 5 and be provided with filter screen 6, center-pole 3 bottoms and spool 2 joints are provided with guard shield 4.
Filter reticulum 5 tops on the described center-pole 3 and be provided with charcoal piece 7.
12 at the film 10 and the seat of honour are provided with spring 9.
Center-pole 3 bottoms, spool 2, guard shield 4 adopts the mode of revolving riveting to form subassembly, center-pole 3 tops, film 10, the seat of honour 12, following seat 13 adopts the mode of revolving riveting to form parts, when breathing pipe 8 is connected negative pressure, whole parts move upward, this moment, waste gas entered from the bottom air inlet of valve body 1, again from opening of valve body 1 and spool 2 flows to valve body 1 chamber the mouth in, guard shield 4 overlaps with 5 of filter screens, to the signal arrow, waste gas can only be walked around guard shield 4 as Fig. 3 exhaust flow, flows into a small amount of from the little gap of guard shield 4 tops and filtration reticulum 5, even if long-term the use, carbon deposit is also relatively very few, can remove by filter screen 6, can not make center-pole 3 and charcoal piece 7 stuck; Compare, in Fig. 1, when not having guard shield, in EGR valve when work,, exhaust flow is illustrated arrow in as figure, center-pole 3 appearance large size contact large quantity of exhaust gas, and long-term the use, carbon deposit increases, and very easy center-pole 3 and the charcoal piece 7 of allowing is stuck, the EGR defective valve;
Because between center-pole 3 and the charcoal piece 7 is Spielpassung, waste gas can only be walked around guard shield 4 and flow in the gap between center-pole 3 and the charcoal piece 7, this moment, flow reduced, flow velocity also reduces greatly simultaneously, the waste gas that leaks into from the gap in lower cover 11 chambeies also reduces relatively, and then the temperature in lower cover 11 chambeies just can not be too high, but the working life of enhanced film 10, it is to communicate with atmosphere that while lower cover 11 has three through holes, and inflow exhaust gas reduces can be to reducing the pollution in the atmosphere; Compare among Fig. 1, when no guard shield, when the EGR valve is worked, exhaust flow is illustrated arrow in as Fig. 1, the flow of waste gas and flow velocity are all very big, directly the gap between center-pole 3 and charcoal piece 7 in inflow lower cover 11 chambeies, then the temperature in lower cover 11 chambeies is higher relatively, reduce the working life of film 10, and exhausted air quantity is big relatively, increases the pollution to air.
Claims (3)
1. the EGR valve of a center-pole band guard apparatus, comprise the spool (2) in the seat of honour (12), following (13), valve body (1), the valve body (1), spool (2) connects the bottom of center-pole (3), the top of center-pole (3) connects film (10), one side at the seat of honour (12) is provided with breathing pipe (8), the bottom of valve body (1) is a suction port, center-pole (3) is gone up near the place, bottom and is provided with filtration reticulum (5), filter in the reticulum (5) and be provided with filter screen (6), it is characterized in that: described center-pole (3) bottom and spool (2) joint are provided with guard shield (4).
2. the EGR valve of center-pole band guard apparatus according to claim 1 is characterized in that: described center-pole (3) is provided with charcoal piece (7) above going up and filtering reticulum (5).
3. the EGR valve of center-pole band guard apparatus according to claim 2 is characterized in that: be provided with spring (9) between described film (10) and the seat of honour (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201514279U CN201679583U (en) | 2010-04-06 | 2010-04-06 | EGR valve with central rod provided with protective cover device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201514279U CN201679583U (en) | 2010-04-06 | 2010-04-06 | EGR valve with central rod provided with protective cover device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201679583U true CN201679583U (en) | 2010-12-22 |
Family
ID=43344629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201514279U Expired - Fee Related CN201679583U (en) | 2010-04-06 | 2010-04-06 | EGR valve with central rod provided with protective cover device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201679583U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080610A (en) * | 2011-03-08 | 2011-06-01 | 无锡隆盛科技有限公司 | EGR (exhaust gas recirculation) valve with tight protective device |
| CN103649512A (en) * | 2011-05-11 | 2014-03-19 | 皮尔伯格有限责任公司 | Valve device for an internal combustion engine |
| CN104454252A (en) * | 2014-11-21 | 2015-03-25 | 无锡隆盛科技股份有限公司 | Vacuum actuator |
-
2010
- 2010-04-06 CN CN2010201514279U patent/CN201679583U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080610A (en) * | 2011-03-08 | 2011-06-01 | 无锡隆盛科技有限公司 | EGR (exhaust gas recirculation) valve with tight protective device |
| CN103649512A (en) * | 2011-05-11 | 2014-03-19 | 皮尔伯格有限责任公司 | Valve device for an internal combustion engine |
| US9410469B2 (en) | 2011-05-11 | 2016-08-09 | Pierburg Gmbh | Valve device for an internal combustion engine |
| CN104454252A (en) * | 2014-11-21 | 2015-03-25 | 无锡隆盛科技股份有限公司 | Vacuum actuator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 214028 South Road, New District, Jiangsu, Wuxi, No. 231-3 Patentee after: Wuxi Longsheng Technology Co., Ltd. Address before: 214028 South Road, New District, Jiangsu, Wuxi, No. 231-3 Patentee before: Wuxi Longsheng Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101222 Termination date: 20150406 |
|
| EXPY | Termination of patent right or utility model |