CN201218150Y - Feedback-controlled exhaust gas recirculation valve for automobiles - Google Patents
Feedback-controlled exhaust gas recirculation valve for automobiles Download PDFInfo
- Publication number
- CN201218150Y CN201218150Y CNU2008200994801U CN200820099480U CN201218150Y CN 201218150 Y CN201218150 Y CN 201218150Y CN U2008200994801 U CNU2008200994801 U CN U2008200994801U CN 200820099480 U CN200820099480 U CN 200820099480U CN 201218150 Y CN201218150 Y CN 201218150Y
- Authority
- CN
- China
- Prior art keywords
- center hole
- pressure chamber
- valve
- diaphragm
- main spring
- 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.)
- Ceased
Links
- 239000007789 gas Substances 0.000 abstract description 9
- 239000002912 waste gas Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The utility model provides an automobile feedback-controlled waste-gas recycling valve, which relates to the automobile tail-gas emission control technology. A valve core shaft conduit (3) is in interference fit with an upper end face hole of a valve seat (2), a valve core shaft (4) is arranged in the valve core shaft conduit (3), the lower end of the valve core shaft (4) is riveted after passing through a bottom valve (1), and the upper end of the valve core shaft (4) orderly passes through the center hole of a gasket A (5) center hole, the center hole of a bottom cover (6) of a pressure chamber, a center hole of a gasket B (7), a center hole of a gasket C (8), the center hole of a secondary spring (9), the interference fit of a center hole of secondary spring seat (10), the center hole of a lower pressure plate (11) of a film chamber, the center hole of a film (12), a center hole of an upper pressure plate (13) of the film chamber, and the interference fit of the center hole of a film locking sleeve (14); a main spring-leaf retainer (15), a main spring (16), and an upper cover (17) of a pressure chamber are placed on the upper end face of the film locking sleeve (14), the outer circle edge of the upper cover (17) of the pressure chamber is turned over for fastening and connecting with the outer circle edge of the bottom cover (6) of the pressure chamber. The utility model has the advantages of simple and compact structure, convenient production and assembly, good air tightness, high stability and reliability, low cost, and the like.
Description
One, technical field
The utility model relates to motor vehicle exhaust emission improvement technology, especially a kind of automobile feedback control type exhaust gas recirculation valve.
Two, background technique
Along with the quickening of social rhythm, this facility of automobile, the social agency of the traffic tool is more very important efficiently, and the diesel car in the automobile is widely used owing to having high thermal efficiency, low CO and HC discharging.But diesel engine has the shortcoming of high NOx and high particulate emission.In the face of more and more stricter Abgasgesetz, reduce the discharging of diesel engine, become the problem that people in recent years make great efforts to study.
High temperature and oxygen enrichment are the major influence factors that NOx generates.At present, generally adopt a kind of gas recirculation system to reach the oxygen content that reduces in engine combustion temperatures and the air inlet in the world, and then reduce the NOx discharging.So-called exhaust gas recirculation is under the prerequisite that guarantees engine power performance, the part of the waste gas that motor is discharged is sent suction tude again back to, after the fresh air mixing, enter cylinder once more, reduced cylinder temperature, dilute the oxygen concentration in the mixed gas, the speed of burning is slowed down, thereby reduced a kind of device of the discharge amount of NOx.
At present, domestic most employing vacuum conditions controlling type waste gas circulating valve, its control accuracy is not high, and it is not ideal to improve emission behaviour.
Three, summary of the invention
The purpose of this utility model provides a kind of simple in structure, adopts the automobile exhaust gas recirculation valve of high-precision position feedback type control.
Technological scheme that the purpose of this utility model adopts is, by valve seat, poppet shaft, pressure chamber's bottom, inferior spring, diaphragm, main spring, pressure chamber's loam cake is formed, interference fit has the poppet shaft conduit in its valve seat upper end face, in the poppet shaft catheter tube poppet shaft is housed, rivet after passing the bottom valve center hole poppet shaft lower end, the upper end is passed pad A center hole successively, pressure chamber's bottom center hole, pad B center hole, pad C center hole, inferior spring spring center hole, inferior spring seat center hole interference fit, diaphragm chamber's press table center hole, the diaphragm center hole, diaphragm chamber's top board center hole, diaphragm locking axle sleeve center hole interference fit, diaphragm locking axle sleeve upper-end surface is placed with the main spring seat ring, main spring seat ring upper-end surface is placed with main spring, the main spring upper-end surface is placed with pressure chamber's loam cake, and loam cake outer circumferential edge flange interlock pressure chamber bottom outer circumferential edge in pressure chamber's connects.
The utility model, mounting hole, pressure chamber's bottom mounting hole, pad A sheet arc gap and the engagement of valve seat upper-end surface mounting hole internal thread on the screw bolt passes pad B sheet.
The circular arc conical surface pastes mutually between the utility model, bottom valve and valve seat.
When the utility model uses, the valve seat lower end surface connects engine exhaust pipe, the side connects engine air inlet tube, the vacuum pump connecting tube that connects of pressure chamber's loam cake connects vacuum pump, working conditions change according to motor, the gas pressure of pilot pressure chamber, because the lower end of diaphragm communicates with atmosphere, when the pressure of the top of diaphragm the time less than atmospheric pressure, will produce a power that makes progress, this is made every effort to overcome the power of clothes main spring and produces motion, drive poppet shaft and bottom valve and move together, in the time of the power that makes progress greater than diaphragm when the power of main spring, poppet shaft and bottom valve move downward under the effect of spring force again, form corresponding exhaust gas recirculation valve opening, make the waste gas of outlet pipe feed back to engine air inlet tube, carry out the closed loop correction by position transducer again, and then effectively control ER EGR Rate.
The utlity model has simple and compact for structurely, make easy to assemblyly, good airproof performance, reliability height, cost are low, can realize high-precision ER EGR Rate control, and then effectively reduce characteristics such as entering of NOx.
Four, description of drawings
Further specify the utility model below in conjunction with accompanying drawing.
Fig. 1 is the utility model profile sectional structure schematic representation;
Fig. 2 is each part assembly structure schematic representation of the utility model.
Among the figure: 10-spring seat 11-of the 1-bottom valve 2-valve seat 3-poppet shaft conduit 4-poppet shaft 5-pad A 6-bottom 7-of pressure chamber pad B 8-9-spring of the pad C press table 12-of the diaphragm chamber diaphragm 13-top board 14-of diaphragm chamber diaphragm locking axle sleeve 15-main spring seat ring 16-main spring 17-pressure chamber loam cake
Five, embodiment
As Fig. 1, shown in Figure 2 by valve seat 2, poppet shaft 4, pressure chamber's bottom 6, inferior spring 9, diaphragm 12, main spring 16, pressure chamber's loam cake 17 is formed, interference fit has in poppet shaft conduit 3 poppet shaft conduits 3 pipes poppet shaft 4 is housed in its valve seat 2 upper end faces, rivet after passing bottom valve 1 center hole poppet shaft 4 lower ends, the upper end is passed pad A5 center hole successively, pressure chamber's bottom 6 center holes, pad B7 center hole, pad C8 center hole, inferior spring 9 spring center holes, inferior spring seat 10 center hole interference fit, diaphragm chamber's press table 11 center holes, diaphragm 12 center holes, diaphragm chamber's top board 13 center holes, diaphragm locking axle sleeve 14 center hole interference fit, diaphragm locking axle sleeve 14 upper-end surfaces are placed with main spring seat ring 15, main spring seat ring 15 upper-end surfaces are placed with main spring 16, main spring 16 upper-end surfaces are placed with pressure chamber's loam cake 17, and pressure chamber's loam cake 17 outer circumferential edge flange pressure chamber's bottom 6 outer circumferential edge that interlock connect.Mounting hole, pressure chamber's bottom 6 mounting holes, pad A5 sheet arc gap and valve seat 2 upper-end surface mounting hole internal thread engagements on the screw bolt passes pad B7 sheet.The circular arc conical surface pastes mutually between bottom valve 1 and the valve seat 2.
Claims (3)
1, a kind of automobile feedback control type exhaust gas recirculation valve, by valve seat (2), poppet shaft (4), pressure chamber's bottom (6), inferior spring (9), diaphragm (12), main spring (16), pressure chamber's loam cake (17) is formed, it is characterized in that interference fit has poppet shaft conduit (3) in the face of valve seat (2) upper end, in poppet shaft conduit (3) pipe poppet shaft (4) is housed, rivet after passing bottom valve (1) center hole poppet shaft (4) lower end, the upper end is passed pad A (5) center hole successively, pressure chamber's bottom (6) center hole, pad B (7) center hole, pad C (8) center hole, inferior spring (9) spring center hole, inferior spring seat (10) center hole interference fit, diaphragm chamber's press table (11) center hole, diaphragm (12) center hole, diaphragm chamber's top board (13) center hole, diaphragm locking axle sleeve (14) center hole interference fit, diaphragm locking axle sleeve (14) upper-end surface is placed with main spring seat ring (15), main spring seat ring (15) upper-end surface is placed with main spring (16), main spring (16) upper-end surface is placed with pressure chamber's loam cake (17), and pressure chamber's loam cake (17) outer circumferential edge flange pressure chamber's bottom (6) outer circumferential edge that interlocks connects.
2, a kind of automobile feedback control type exhaust gas recirculation valve according to claim 1 is characterized in that mounting hole on screw bolt passes pad B (7) sheet, pressure chamber's bottom (6) mounting hole, pad A (5) sheet arc gap and the engagement of valve seat (2) upper-end surface mounting hole internal thread.
3, a kind of automobile feedback control type exhaust gas recirculation valve according to claim 1 is characterized in that the circular arc conical surface pastes mutually between bottom valve (1) and the valve seat (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200994801U CN201218150Y (en) | 2008-07-18 | 2008-07-18 | Feedback-controlled exhaust gas recirculation valve for automobiles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200994801U CN201218150Y (en) | 2008-07-18 | 2008-07-18 | Feedback-controlled exhaust gas recirculation valve for automobiles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201218150Y true CN201218150Y (en) | 2009-04-08 |
Family
ID=40540987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200994801U Ceased CN201218150Y (en) | 2008-07-18 | 2008-07-18 | Feedback-controlled exhaust gas recirculation valve for automobiles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201218150Y (en) |
-
2008
- 2008-07-18 CN CNU2008200994801U patent/CN201218150Y/en not_active Ceased
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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 | ||
| CP03 | Change of name, title or address |
Address after: 401122 Chongqing district by the North District of Chongqing Jin Avenue, No. 9 Patentee after: China Automotive Engineering Research Institute Co., Ltd. Address before: 400039 Chongqing Jiulongpo Chen Ping Tian Cun in No. 101 Patentee before: China Automotive Engineering Research Institute Co., Ltd. |
|
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20140725 Decision number of declaring invalidation: 23345 Granted publication date: 20090408 |