CN102691594A - EGR (exhaust gas recirculation) valve capable of automatically adjusting stress balance of valve rod - Google Patents
EGR (exhaust gas recirculation) valve capable of automatically adjusting stress balance of valve rod Download PDFInfo
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- CN102691594A CN102691594A CN2012102161117A CN201210216111A CN102691594A CN 102691594 A CN102691594 A CN 102691594A CN 2012102161117 A CN2012102161117 A CN 2012102161117A CN 201210216111 A CN201210216111 A CN 201210216111A CN 102691594 A CN102691594 A CN 102691594A
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- valve
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- valve rod
- cavity
- egr
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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 invention discloses an EGR (exhaust gas recirculation) valve capable of automatically adjusting stress balance of a valve rod. The EGR valve comprises a valve body, an exhaust cavity and a control valve, wherein the control valve comprises a valve rod, a valve and a spring, the spring is arranged in a negative pressure cavity, the negative pressure cavity is communicated with the exhaust cavity through a guide sleeve, and the valve rod is arranged in the guide sleeve and positioned in the negative pressure cavity, the valve body and the exhaust cavity; the negative pressure cavity is segmented into an upper cavity and a lower cavity by a lower seat, and the top end of the valve rod is connected with the spring through a spring adjusting and balancing plate; the top end of the valve rod is in the shape of a semi-circular head, and a pit which is matched with the semi-circular head top end of the valve rod is arranged on the lower end surface of the spring adjusting and balancing plate. The EGR valve disclosed by the invention has the advantages of simple structure and convenience in assembly, the free rotation of the concave circular surface of the spring adjusting and balancing plate and the convex circular surface of the semi-circular head is utilized to adjust the spring adjusting and balancing plate to the optimal balanced state so as to ensure the stress balance of the spring during the motion process.
Description
Technical field
The present invention relates to the EGR valve in the engine exhaust emission gas recirculation system (egr system), particularly a kind of can the adjustment automatically the valve rod in the movement process makes valve rod keep the EGR valve of stress balance always.
Background technique
The EGR valve plays the control action that the EGR gas flow is regulated in vehicle engine exhaust gas recirculation system (egr system).The major function of EGR valve is the size that changes magnetic force through the electric current of the vacuum electromagnetic regulator coil that changes control EGR degree of vacuum; To reach different degree of vacuum; Impel EGR valve suction port switch size; Thereby the adjusting exhaust gas flow makes it and returns cylinder after fresh air mixes and carry out recirculation, is used to reduce NO
XDischarge amount.
When the breathing pipe of EGR valve was connected negative pressure, valve can overcome spring force and move upward under action of negative pressure together with valve rod, and the EGR valve is in running order.Owing to exist movement clearance between valve rod and the guide pin bushing; And the spring force that valve rod need overcome in movement process is relatively large; Therefore can to cause valve rod in movement process, to be partial to guide pin bushing one-sided for spring itself and the formed beat power of assembling; Thereby the valve rod that causes the EGR valve produces big surface friction drag in movement process, even sends abnormal sound, influences performance of products.
Summary of the invention
The technical problem that the present invention solves provides a kind of can the adjustment automatically the valve rod in the movement process, makes valve rod keep stress balance always, in guide pin bushing, makees the EGR valve of vertical motion up and down.
For solving the problems of the technologies described above, the technological scheme that the present invention taked is following:
But the EGR valve of self regulating valve bar stress balance comprises valve body, is arranged on waste gas chamber in the valve body and the control valve that is used to regulate exhaust gas flow in the waste gas chamber; Said control valve comprises valve rod, the valve that is connected with the valve rod bottom and is used to control valve rod and spring that valve moves up and down; Said spring is set in place in the negative cavity of valve body upper end; Be communicated with through guide pin bushing between negative cavity and waste gas chamber, valve rod is arranged in the guide pin bushing and is positioned at negative cavity, valve body and waste gas chamber; Following of said negative cavity warp is divided into epicoele and cavity of resorption, and epicoele is communicated with the negative pressure ventilation pipe, and spring is positioned at the epicoele top, and the top of valve rod is passed down seat and adjusted balance plate through spring through cavity of resorption and is connected with spring; The top of said valve rod is the cup head shape, and the lower end surface of spring adjustment balance plate is provided with the pit equipped mutually with the cup head valve stem tip.
Improvement of the present invention is: be provided with seal ring between the cup head of said valve stem tip and following.
Owing to adopted above technological scheme, institute of the present invention acquisition of technology progress is following:
The present invention is simple in structure, easy to assembly; Utilize freely the rotating of dome face of recessed disc and the cup head of spring adjustment balance plate; Make spring adjustment balance plate adjustment optimum balance state; Guarantee spring stress balance in movement process, fine solution EGR valve need overcome the stressed energy imbalance of the spring that causes than big spring power in movement process.Design and matching requirements to component all decrease, and have reduced cost of production, have improved the up-to-standard rate of product.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Wherein: 1. valve rod, 2. guide pin bushing, 3. valve rod center-pole, 4. spring adjustment balance plate, 5. spring, 6. negative pressure ventilation pipe, 7. loam cake 8. descends seat, 9. valve, 10. seal ring.
Embodiment
To combine accompanying drawing below, the present invention will be further elaborated.
But a kind of EGR valve of self regulating valve bar stress balance, its structure is as shown in Figure 1.Mainly comprise valve body, be arranged on waste gas chamber in the valve body and the control valve that is used to regulate exhaust gas flow in the waste gas chamber.The upper end of valve body is fixedly connected a negative cavity, and negative cavity is divided into epicoele and cavity of resorption through following 8, and epicoele is communicated with negative pressure ventilation pipe 6, is communicated with through guide pin bushing 2 between cavity of resorption and waste gas chamber.
Control valve comprises valve rod, valve, spring adjustment balance plate and spring.Spring and spring adjustment balance plate are arranged in the epicoele; The valve rod valve rod is arranged in the guide pin bushing, and is positioned at negative cavity, valve body and waste gas chamber; Valve is positioned at the suction port place in waste gas chamber, and equipped mutually with suction port.
The top of spring is fixedly connected on the epicoele roof, and the bottom of spring is connected with the upper-end surface of spring adjustment balance plate.The lower end surface of spring adjustment balance plate is provided with pit, and the pit of spring adjustment balance plate is equipped mutually with the top of valve rod, and spring adjustment balance plate is used for the self regulating valve bar at the movement process stress balance, guarantees that valve rod is positioned at the central position of guide pin bushing.The top of valve rod is the cup head shape, and the epicoele that is positioned at following top is passed on the cup head top of valve rod, and is equipped mutually with the pit of spring adjustment balance plate; Valve rod stretches in the waste gas chamber after passing the guide pin bushing between cavity of resorption and valve body, and the bottom of valve rod is fixedly connected with valve.
Working principle of the present invention is described below:
When negative pressure ventilation pipe 6 was connected negative pressure, valve 9 moved upward together with the active force that valve rod 1 overcomes spring, and valve 9 is opened, and waste gas gets in the waste gas chamber, the work of EGR valve.In this working procedure, there is the gap between valve rod 1 and the guide pin bushing 2, because the spring force that valve rod 1 motion is overcome is relatively large, the quality of part itself and assembly error all can make the loam cake of negative cavity produce uneven with following 8.The present invention can be revolved the imbalance that cup head structure and the concavo-convex round structure between the spring adjustment balance plate pit after the riveting are adjusted spring automatically through valve stem tip; Make spring 5 stress balances; Thereby make valve rod 1 in guide pin bushing, do vertical up-or-down movement; And do not rub with guide pin bushing 2, produce abnormal sound between the valve rod and guide pin bushing in the EGR valve working procedure or frictional resistance strengthens the problem that influences product performance thereby solve.
Spring inserts the size of negative pressure value according to the negative pressure ventilation pipe, is used to control the distance that valve rod and valve move up and down, and with the aperture of control valve, further controls the exhaust gas flow in inflow exhaust gas chamber.
Claims (2)
1. but the EGR valve of a self regulating valve bar stress balance comprises valve body, is arranged on waste gas chamber in the valve body and the control valve that is used to regulate exhaust gas flow in the waste gas chamber; The valve (9) that said control valve comprises valve rod (1), be connected with the valve rod bottom and being used to is controlled the spring (5) that valve rod and valve move up and down; Said spring is set in place in the negative cavity of valve body upper end; Be communicated with through guide pin bushing (2) between negative cavity and waste gas chamber, valve rod is arranged in the guide pin bushing and is positioned at negative cavity, valve body and waste gas chamber; It is characterized in that: said negative cavity is divided into epicoele and cavity of resorption through following (8), and epicoele is communicated with negative pressure ventilation pipe (6), and spring is positioned at the epicoele top, and the top of valve rod is passed down seat (8) and adjusted balance plate (4) through spring through cavity of resorption and is connected with spring; The top of said valve rod is the cup head shape, and the lower end surface of spring adjustment balance plate is provided with the pit equipped mutually with the cup head valve stem tip.
2. but the EGR valve of self regulating valve bar stress balance according to claim 1 is characterized in that: be provided with seal ring (10) between the cup head of said valve stem tip and following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102161117A CN102691594A (en) | 2012-06-27 | 2012-06-27 | EGR (exhaust gas recirculation) valve capable of automatically adjusting stress balance of valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102161117A CN102691594A (en) | 2012-06-27 | 2012-06-27 | EGR (exhaust gas recirculation) valve capable of automatically adjusting stress balance of valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102691594A true CN102691594A (en) | 2012-09-26 |
Family
ID=46857279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102161117A Pending CN102691594A (en) | 2012-06-27 | 2012-06-27 | EGR (exhaust gas recirculation) valve capable of automatically adjusting stress balance of valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102691594A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139309A (en) * | 2015-03-19 | 2019-01-04 | 常州科普动力机械有限公司 | Adapt to the EGR check valve of the various workloads of internal combustion engine |
| CN114909237A (en) * | 2022-03-02 | 2022-08-16 | 温州市温纳汽车配件有限公司 | Exhaust gas recirculation valve with high air tightness |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29612465U1 (en) * | 1996-07-18 | 1996-09-05 | Gustav Wahler Gmbh U. Co, 73730 Esslingen | Exhaust gas recirculation valve for an internal combustion engine |
| CN2751154Y (en) * | 2004-12-17 | 2006-01-11 | 王进丁 | Automobile exhaust gas recirculation valve |
| CN201778915U (en) * | 2010-05-21 | 2011-03-30 | 无锡隆盛科技有限公司 | EGR (Exhaust Gas Recirculation) valve with displacement transducer |
| CN202611938U (en) * | 2012-06-27 | 2012-12-19 | 无锡隆盛科技股份有限公司 | Exhaust gas recirculation (EGR) valve capable of automatically adjusting stress balance of valve rod |
-
2012
- 2012-06-27 CN CN2012102161117A patent/CN102691594A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29612465U1 (en) * | 1996-07-18 | 1996-09-05 | Gustav Wahler Gmbh U. Co, 73730 Esslingen | Exhaust gas recirculation valve for an internal combustion engine |
| CN2751154Y (en) * | 2004-12-17 | 2006-01-11 | 王进丁 | Automobile exhaust gas recirculation valve |
| CN201778915U (en) * | 2010-05-21 | 2011-03-30 | 无锡隆盛科技有限公司 | EGR (Exhaust Gas Recirculation) valve with displacement transducer |
| CN202611938U (en) * | 2012-06-27 | 2012-12-19 | 无锡隆盛科技股份有限公司 | Exhaust gas recirculation (EGR) valve capable of automatically adjusting stress balance of valve rod |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139309A (en) * | 2015-03-19 | 2019-01-04 | 常州科普动力机械有限公司 | Adapt to the EGR check valve of the various workloads of internal combustion engine |
| CN114909237A (en) * | 2022-03-02 | 2022-08-16 | 温州市温纳汽车配件有限公司 | Exhaust gas recirculation valve with high air tightness |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120926 |