CN103883434A - Spring structure of electric EGR valve applied to gasoline engine - Google Patents
Spring structure of electric EGR valve applied to gasoline engine Download PDFInfo
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- CN103883434A CN103883434A CN201410156005.3A CN201410156005A CN103883434A CN 103883434 A CN103883434 A CN 103883434A CN 201410156005 A CN201410156005 A CN 201410156005A CN 103883434 A CN103883434 A CN 103883434A
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- spring
- egr valve
- electric egr
- truncated
- cone
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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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Abstract
The invention discloses a spring structure of an electric EGR valve applied to a gasoline engine. A spring with which a center rod is sleeved is of a circular-truncated-cone-shape structure. The upper end of the circular-truncated-cone-shaped spring is connected with an end cover of the center rod, and the lower end of the circular-truncated-cone-shaped spring is connected with a lower magnetic plate assembly. The diameter of the cross section of the upper end of the circular-truncated-cone-shaped spring is smaller than that of the cross section of the lower end of the circular-truncated-cone-shaped spring. The spring structure of the electric EGR valve applied to the gasoline engine is simple, convenient to assemble and reliable in performance, and the problem that the spring cannot be stretched or reset in the working process of the electric EGR valve is solved.
Description
Technical field
The present invention relates to petrol engine exhaust emission control device technical field, particularly the spring improved structure of electric EGR valve in a kind of petrol engine exhaust emissions gas recirculation system.
Background technique
Electric EGR valve plays the executive component effect that regulates EGR gas flow in petrol engine gas recirculation system.The structure of petrol engine electric engine EGR valve as shown in Figure 1, in the course of the work, after sensor unit 18 energisings, coil 15 produces induction field, even iron 13 just moves downward in even iron guide sleeve 14, the lower dead center 20 that down moves to lower magnetic sheet assembly 9 with center-pole 3 and center-pole end cap 12, now valve is opened completely.Valve spring 11 in the time entirely opening is compressed to greatest extent, and then spring 11 starts return, and valve cuts out gradually, goes round and begins again and has just formed the working procedure of valve.In the whole working procedure of valve, spring 11 plays a part cut-off valve.
Existing petrol engine electric EGR valve spring 11 is all cylinder type, as shown in Figure 2, what it was opened to valve completely from the precompression length L 1 of electric EGR valve closed condition is compressed to length L 2 to greatest extent, in this compression process, spring 11 cannot keep straight line pattern, as shown in Figure 3, always have a resiliently deformable, just there will be it and lower magnetic sheet assembly 9 to occur interfering 21, in the descending process of spring 11 and springback process, will there is very large surface friction drag with lower magnetic sheet assembly 9, thereby the serious valve that will cause is opened less than maximum position or can not cause defective valve by return.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of spring improved structure of petrol engine electric EGR valve of easy to assembly, reliable performance is provided, solve electric EGR valve working procedure medi-spring and can not open the problem of position and return.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows.
Be applied to the spring structure of electric EGR valve on petrol engine, described in the spring that is socketed on center-pole be frustoconic shape structure, described frustoconic shape spring upper end is connected with center-pole end cap, lower end is connected with lower magnetic sheet assembly; The upper end cross-sectional diameter of described frustoconic shape spring is less than lower end cross-sectional diameter.
Owing to having adopted above technological scheme, the invention technological progress is as follows.
The invention solves petrol engine electric EGR valve and open in the course of the work the problem that causes defective valve with not going back to position not in place, greatly improved the product performance of petrol engine electric EGR valve, extended working life.In addition, the present invention is simple in structure, and little in equal load condition lower volume, quality is light, has reduced cost on material; Easy to assembly, because the upper end of structure of the present invention diminishes, in the time of the assembling of center-pole end cap and center-pole, become convenient.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of conventional gasoline engin electric EGR valve;
Accompanying drawing 2 is the structural representation of conventional gasoline engin electric EGR valve spring;
Accompanying drawing 3 is the schematic diagram that conventional gasoline engin electric EGR valve spring produces deformation;
Accompanying drawing 4 is structural representation of the present invention.
Wherein: 3. center-pole, 9. descend magnetic sheet assembly, 10. damping pad, 11. springs, 12. center-pole end caps,
13. even iron, 14. even iron guide sleeves, 15. coils, 18. sensor units, 20. lower dead center, 21. Interference points.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further elaborated.
Be applied to the spring structure of electric EGR valve on petrol engine, its structure as shown in Figure 4, described in the spring that is socketed on center-pole be frustoconic shape structure, frustoconic shape spring upper end is connected with center-pole end cap, lower end is connected with lower magnetic sheet assembly; The upper end cross-sectional diameter of described frustoconic shape spring is less than lower end cross-sectional diameter.
In petrol engine electric engine EGR valve working procedure, after sensor unit 18 energisings, coil 15 produces induction field, even iron 13 just moves downward in even iron guide sleeve 14, down move to the lower dead center 20 of lower magnetic sheet assembly 9 with center-pole 3 and center-pole end cap 12, because frustoconic shape spring self shape and structure makes whole spring stress even, avoid spring to produce deformation, now valve is opened completely; Then spring 11 starts smooth return, and valve cuts out gradually.Go round and begin again and just formed the working procedure of valve.
Claims (1)
1. the spring structure that is applied to electric EGR valve on petrol engine, is characterized in that: described in the spring that is socketed on center-pole be frustoconic shape structure, described frustoconic shape spring upper end is connected with center-pole end cap, lower end is connected with lower magnetic sheet assembly; The upper end cross-sectional diameter of described frustoconic shape spring is less than lower end cross-sectional diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410156005.3A CN103883434A (en) | 2014-04-17 | 2014-04-17 | Spring structure of electric EGR valve applied to gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410156005.3A CN103883434A (en) | 2014-04-17 | 2014-04-17 | Spring structure of electric EGR valve applied to gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103883434A true CN103883434A (en) | 2014-06-25 |
Family
ID=50952517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410156005.3A Pending CN103883434A (en) | 2014-04-17 | 2014-04-17 | Spring structure of electric EGR valve applied to gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103883434A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06249083A (en) * | 1993-03-01 | 1994-09-06 | Honda Motor Co Ltd | Motor driving actuator |
| CN201650508U (en) * | 2010-04-30 | 2010-11-24 | 无锡隆盛科技有限公司 | Electric EGR valve for preventing waste gas from entering into sensor |
| CN102094731A (en) * | 2011-03-08 | 2011-06-15 | 无锡隆盛科技有限公司 | Power-driven EGR (exhaust gas recirculation) valve |
| CN201943845U (en) * | 2011-03-08 | 2011-08-24 | 无锡隆盛科技有限公司 | Dual exhaust electric EGR (exhaust gas recirculation) valve |
| CN203347945U (en) * | 2013-07-23 | 2013-12-18 | 无锡隆盛科技股份有限公司 | Hall-type linear power-driven EGR (exhaust gas recirculation) valve |
| CN203769967U (en) * | 2014-04-17 | 2014-08-13 | 无锡隆盛科技股份有限公司 | Spring structure of electric EGR valve of gasoline engine |
-
2014
- 2014-04-17 CN CN201410156005.3A patent/CN103883434A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06249083A (en) * | 1993-03-01 | 1994-09-06 | Honda Motor Co Ltd | Motor driving actuator |
| CN201650508U (en) * | 2010-04-30 | 2010-11-24 | 无锡隆盛科技有限公司 | Electric EGR valve for preventing waste gas from entering into sensor |
| CN102094731A (en) * | 2011-03-08 | 2011-06-15 | 无锡隆盛科技有限公司 | Power-driven EGR (exhaust gas recirculation) valve |
| CN201943845U (en) * | 2011-03-08 | 2011-08-24 | 无锡隆盛科技有限公司 | Dual exhaust electric EGR (exhaust gas recirculation) valve |
| CN203347945U (en) * | 2013-07-23 | 2013-12-18 | 无锡隆盛科技股份有限公司 | Hall-type linear power-driven EGR (exhaust gas recirculation) valve |
| CN203769967U (en) * | 2014-04-17 | 2014-08-13 | 无锡隆盛科技股份有限公司 | Spring structure of electric EGR valve of gasoline engine |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140625 |