CN201412239Y - Reversal EGR valve with displacement sensor - Google Patents
Reversal EGR valve with displacement sensor Download PDFInfo
- Publication number
- CN201412239Y CN201412239Y CN2009200447876U CN200920044787U CN201412239Y CN 201412239 Y CN201412239 Y CN 201412239Y CN 2009200447876 U CN2009200447876 U CN 2009200447876U CN 200920044787 U CN200920044787 U CN 200920044787U CN 201412239 Y CN201412239 Y CN 201412239Y
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- China
- Prior art keywords
- valve
- port
- gate
- less
- egr
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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.)
- 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
Abstract
The utility model discloses a valve for tail gas exhaust gas recirculation system of an automobile engine, namely a valve for EGR system; the valve comprises a valve body, a sealed cavity body part inthe valve body, a valve rod in the valve body and a valve gate connected with the valve rod; the lower end of the valve body is provided with a valve gate port, the valve gate can be closed with thevalve gate port, the aperture of the upper end port of the valve gate port is less than the aperture of the lower end port, the upper end diameter of the valve gate is less than the lower end diameter, the aperture of the upper end port of the valve gate port is less than the lower end diameter of the valve gate, a displacement sensor is arranged on the upper end of the valve body, and the displacement sensor is connected with the valve rod in a valve seat through a displacement sensor mandrel. As the aperture of the upper end port of the valve gate port is less than the lower end diameter ofthe valve gate, and when the clutch is pressed for acceleration, upward force is applied on the valve gate on the lower end of the EGR valve seat so that the valve gate closed with the valve gate portcannot be opened and the waste gas cannot flow into, and the dark smoke situation is avoided.
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.
When the anxious acceleration of gas, the EGR valve should be in closed condition, but the vehicle that some exhaust pressure is big, the pressure of outlet pipe directly acts on EGR valve valve rod, valve rod is subjected to power upwards, therefore can the moving upward of EGR valve valve rod, and suction port then is opened, thereby there is waste gas to flow into, causes the over-emitting black exhaust phenomenon.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of can prevent that gas is anxious and quicken the time, and waste gas flows into valve body, avoids the EGR valve of over-emitting black exhaust phenomenon.
The technical solution of the utility model is:
A kind of inverted EGR valve with displacement transducer, comprise the Seal cage parts in valve body, the valve body, valve rod in the valve body, be connected the valve on the valve rod, the lower end of valve body is a valve port, valve can with the valve port closure, the upper end-hole bore of valve port is less than the bore of lower end mouth, and the upper end diameter of described valve is less than lower end diameter, and the upper end-hole bore of described valve port is less than the lower end diameter of valve.
The upper end of valve body is provided with displacement transducer, and described displacement transducer is connected on the valve rod in the valve body by the displacement transducer push rod.
Beneficial effect: because the upper end-hole bore of valve port is less than the bore of lower end mouth, the upper end diameter of valve is less than lower end diameter, the upper end-hole bore of valve port is again less than the lower end diameter of valve, so when throttle quickens, when EGR valve body lower end valve is subjected to upwards power, can't back down the valve with the valve port closure, waste gas can't flow into, and has avoided the generation of over-emitting black exhaust phenomenon.When EGR valve reverse operation, the displacement transducer push rod simultaneously can reversing motion, and reflect that with signal pattern the working stroke of EGR is the air inflow size, thereby feed back to ECU (Electrical Control Unit) ECU, ECU can judge in view of the above that whether the EGR valve is in best path increment and controls, and makes the EGR valve be in best lift amount.
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, setting sleeve, the last setting sleeve of 5-, 6 loam cakes, the big film of 7-, 8-lower cover, 9-valve rod, 10-locking nut, 11-spring, 12-valve, 13-vacuum tube, 14-displacement transducer, 15-displacement transducer push rod, 16-valve body, 17-valve port, 18-Seal cage parts under following of 1-film, the little film of 2-, 3-vacuum lower cover member, the 4-.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
A kind of inverted EGR valve with displacement transducer, comprise the Seal cage parts 18 in valve body 16, the valve body 16, valve rod 9 in the valve body 16, be connected the valve 12 on the valve rod 9, the lower end of valve body 16 is a valve port 17, valve 12 can with valve port 17 closures, the upper end-hole bore of valve port 17 is less than the bore of lower end mouth, and the upper end diameter of described valve 12 is less than lower end diameter, and the upper end-hole bore of described valve port 17 is less than the lower end diameter of valve 12.
The upper end of described valve seat 16 is provided with displacement transducer 14.
Described displacement transducer 14 is connected on the valve rod 9 in the valve body 16 by displacement transducer push rod 15.
As Fig. 2 is this practical off position: following 1 of film, little film 2, vacuum lower cover member 3, and process closes up, the flanging assembling forms sealing, and following setting sleeve 4, little film 2, upward setting sleeve 5 interference assembling form sealing; Loam cake 6, big film 7, cap assembly 3 under the vacuum, lower cover 8 is through closing up, the flanging assembling, form sealing, assemble by locking nut 10 between valve rod 9 and the big film 7, form sealing, die cavity between big film 7 and the little film 2 forms an integral body, owing to be between valve rod 9 and the big film 7 by locking nut 10 lockings, so valve rod 9 also holds together with whole die cavity, when loam cake 6 assembles with lower cover 8 flanging, make the spring 11 preloading power in the die cavity, and the rebounding force of this precompression forces die cavity to drive valve rod 9 and valve 12 moves upward, wherein valve rod 9 is in aggregates with valve 12 laser bonding, is closed condition so form the original state of valve.Displacement transducer 14 brushes are connected on the displacement transducer push rod 15, when the EGR valve is in closed condition, valve rod 9 does not move, because valve rod 9 links to each other with displacement transducer push rod 15, so displacement transducer push rod 15 does not move, brush is in the fixed position of thick-film resistor, keeps a stable magnitude of voltage, the signal value that corresponding output is certain
Fig. 3 is this practical working state: when vacuum tube 13 is connected vacuum pressure, die cavity between big film 7 and the little film 2 just forms a Seal cage, when spring 11 is subjected to vacuum pressure greater than precompression itself, 11 on spring drives Seal cage and valve rod 9, valve 12 down move, make the air inlet open of EGR valve, waste gas enters the EGR valve and carries out recirculation.When the EGR valve is in running order, valve rod 9 moves downward, because valve rod 9 links to each other with displacement transducer push rod 15, so displacement transducer push rod 15 also moves downward in succession, thereby displacement transducer 14 brushes slide on thick-film resistor, and magnitude of voltage is constantly changed, the signal value that corresponding output is different.The working stroke that reflects the EGR valve is the air inflow size, thereby feeds back to ECU (Electrical Control Unit) ECU, and ECU can judge in view of the above that whether the EGR valve is in best path increment and controls, and makes the EGR valve be in best lift amount.
Claims (3)
1. inverted EGR valve with displacement transducer, comprise Seal cage parts (18), the valve rod (9) in the valve body (16) in the valve body (16), valve body (16), be connected the valve (12) on the valve rod (9), the lower end of valve body (16) is valve port (17), valve (12) can with valve port (17) closure, it is characterized in that: the upper end-hole bore of described valve port (17) is less than the bore of lower end mouth, the upper end diameter of described valve (12) is less than lower end diameter, and the upper end-hole bore of described valve port (17) is less than the lower end diameter of valve (12).
2. the inverted EGR valve of band displacement transducer according to claim 1 is characterized in that: the upper end of described valve body (16) is provided with displacement transducer (14).
3. the inverted EGR valve of band displacement transducer according to claim 2 is characterized in that: described displacement transducer (14) is connected on the interior valve rod (9) of valve body (16) by displacement transducer push rod (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200447876U CN201412239Y (en) | 2009-05-27 | 2009-05-27 | Reversal EGR valve with displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200447876U CN201412239Y (en) | 2009-05-27 | 2009-05-27 | Reversal EGR valve with displacement sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201412239Y true CN201412239Y (en) | 2010-02-24 |
Family
ID=41714123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200447876U Expired - Fee Related CN201412239Y (en) | 2009-05-27 | 2009-05-27 | Reversal EGR valve with displacement sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201412239Y (en) |
Cited By (2)
| 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 |
| CN102840061A (en) * | 2011-06-22 | 2012-12-26 | 爱三工业株式会社 | Egr valve |
-
2009
- 2009-05-27 CN CN2009200447876U patent/CN201412239Y/en not_active Expired - Fee Related
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 |
| CN102840061A (en) * | 2011-06-22 | 2012-12-26 | 爱三工业株式会社 | Egr valve |
| CN102840061B (en) * | 2011-06-22 | 2015-06-17 | 爱三工业株式会社 | Egr valve |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100224 Termination date: 20180527 |