CN203022916U - Exhaust gas recirculation valve - Google Patents
Exhaust gas recirculation valve Download PDFInfo
- Publication number
- CN203022916U CN203022916U CN2012206938731U CN201220693873U CN203022916U CN 203022916 U CN203022916 U CN 203022916U CN 2012206938731 U CN2012206938731 U CN 2012206938731U CN 201220693873 U CN201220693873 U CN 201220693873U CN 203022916 U CN203022916 U CN 203022916U
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- CN
- China
- Prior art keywords
- valve
- exhaust gas
- gas recirculation
- eccentric cam
- wheel 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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- Mechanically-Actuated Valves (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The utility model discloses an exhaust gas recirculation valve. The exhaust gas recirculation valve comprises a driving device, a valve seat, and a valve plate which is connected on a valve rod, wherein a driving valve of the driving device moves up and down to control opening and closing of a valve. The exhaust gas recirculation valve is characterized in that the driving device is a simple and easy eccentric cam component which is directly driven by a rotating shaft of a motor, the simple and easy eccentric cam component comprises a simple and easy eccentric cam and a contact wheel seat, the simple and easy eccentric cam and the contact wheel seat are always in rigid contact, the valve rod applies a spring compression method, and the top end face of the valve rod makes contact with the bottom portion of the contact wheel seat. In the structure of the exhaust gas recirculation valve, the rotating shaft of the motor and the simple and easy eccentric cam component are in rigid connection, other parts of middle transmission are eliminated, and therefore the problem of being complex in rotating motion and axial linear motion switching mechanism is solved, and flexible lifting motion of valve components can be achieved.
Description
Technical field
The utility model relates to the exhaust gas recirculation valve in a kind of electronic egr system.
Background technique
Adopting EGR (English EGR, the abbreviation of Exhaust Gas Recirculation) is one of effective measures that reduce motor nitrogen oxide (NOx) discharging, is approved and promotes the use of by increasing producer.
The motion principle of valve member is by translational motion, valve member to be discharged from its valve seat.The various structures form is arranged in prior art.
Adopt cam in patent documentation EP 0856657, but drive and engage with the tappet of translational motion with rotation mode by driving mechanism.Cam rises tappet when moving with regard to the mobile valve tappet of translation and valve open with rotation mode from its valve seat.
In patent documentation EP 1245820, as the suitable result of driving mechanism, rotatablely moving is sent to valve member, and it moves opening and closing between the position, and vice versa.
Disclose a kind of exhaust gas recirculation valve in patent documentation CN1641203, adopt gear train to realize rotatablely moving and straight-line conversion, complicated structure.
Disclose a kind of exhaust gas recirculation valve in patent documentation CN101105161, adopt cam member to realize rotary actuation, described rotary actuation allows the operation of the valve member that can rotate around running shaft, and the rotation of described cam member causes running shaft to rotate.
Disclose a kind of exhaust gas recirculation valve in patent documentation CN201908748, adopt rotating lifting gear, comprise a cam disk and Lift Part.
Disclose a kind of exhaust gas recirculation valve in patent documentation CN101644212, adopt the rotary actuation Eccentric earn mechamism action of motor, control the unlatching of EGR valve by the molded line of eccentric cam.
These technological scheme structure relative complex of prior art cause the egr system overall volume to reduce, and some design complexity are the Profile Design difficulty especially.
Summary of the invention
The utility model purpose is to provide a kind of more succinct, compacter rotation-linear motion conversion mechanism, makes that structure and processing technology are simple, power transmission is more steady.
The utility model adopts following technological scheme for achieving the above object:
A kind of exhaust gas recirculation valve, comprise drive unit, valve seat and be connected to valve block on valve rod, the up and down control valve folding of described drive unit actuate valve stem is characterized in that: described drive unit is the Simple eccentric cam member that electric machine rotational axis directly drives; Described Simple eccentric cam member comprises the Simple eccentric cam and contacts wheel seat, rigidity contact all the time between described Simple eccentric cam and contact wheel seat; Described valve rod adopts the spring compression mode, and its top end touches with the described wheel seat bottom connection that contacts.
It is further characterized in that: described motor is torque motor.
Described contact wheel seat, valve rod are fixedly connected with valve block, rotate around stem shaft.
Preferably: described contact wheel seat adopts convex surface or concave structure.
Its further feature also is: described valve seat comprises transmission profile and valve body, is provided with heat insulating mattress between described transmission profile and valve body, and described transmission profile is provided with into return pipe.
In the utility model structure, the running shaft of motor and Simple eccentric cam member are rigidly connected, omit other component of intermediate transmission, both solve the problem that rotatablely moves with axial linear movement switching mechanism complexity, and can realize again the flexible elevating movement of valve member.
Description of drawings
Fig. 1 is the utility model concave surface contact wheel seat embodiment schematic diagram.
Fig. 2 is the utility model convex surface contact wheel seat embodiment schematic diagram.
Fig. 3 is the utility model lift of valve plate schematic diagram.
Embodiment
As shown in Figure 1, 2, a kind of exhaust gas recirculation valve for EGR adopts Split type structure.In order to heat-blocking action, valve body 1 adopts screws to be connected with transmission profile 5 to valve body 1 with the middle shimming 12 of transmission profile 5.Valve rod 3 is in the inner slip flexibly of guide pin bushing 13.The lower end of valve rod 3 and valve block 2 adopt to be rigidly connected and consist of described valve member, adopt interference fit in the present embodiment, also can adopt the modes such as riveted joint, welding to connect; The top end of valve rod 3 and the bottom contact that contacts wheel seat 6.The mounting spring seat of honour, top 8 of valve rod 3, the spring seat of honour 9 compresses return springs 4, and the pretightening force of setting valve by the pre compressed magnitude of adjusting return spring 4 is to guarantee the sealing of valve block 2 and valve body 1.Return spring 4 is arranged on valve rod 3, return spring 4 bottoms and spring lower seat 10 butts.Spring lower seat 10 is placed in transmission profile 5 inside.Select torque motor 8 as whirligig, the running shaft of described motor 8 is connected with Simple eccentric cam 7 by riveted joint, and running shaft rotary actuation Simple eccentric cam member makes valve be in and opens or closed condition.Described Simple eccentric cam member comprises Simple eccentric cam 7 and contacts wheel seat 6, Simple eccentric cam 7 with contact wheel seat 6 rigidity contacts.
The rotation of motor 8 drives 7 rotations of Simple eccentric cam.Simple eccentric cam 7 is rigidly connected with contacting wheel seat 6, makes the upper and lower displacement of contact wheel seat 6 generation valve rod 3 moving direction by the rotation of Simple eccentric cam 7.Contact wheel seat 6 can move up and down and can rotate in valve rod 3 moving direction.Contact wheel seat 6 bottoms contact with the top end of valve rod 3, it is exactly the aperture of valve block 2 that the Simple eccentric cam member directly is reflected on valve member in the displacement of valve rod 3 moving direction, it is exactly the rotation of valve block 2 that 6 rotations of contact wheel seat are reflected on valve member, is conducive to the removal of valve block 2 place's carbon deposits.The mounting spring seat of honour, top 9 of valve rod 3, the spring seat of honour 9 compresses return springs 4, makes EGR valve return rapidly by return spring 4.When the EGR valve was in closed condition, return spring 4 existed default pretightening force to guarantee the sealing of valve block 2 and valve body 1; When the EGR valve was opened, return spring 4 was compressed, and the reaction force assurance contact wheel seat 6 of spring remains with Simple eccentric cam 7 and contacts.
On valve body 1, the exhaust gas inlet of design is connected with the internal-combustion engine vent-pipe lateral line, and the waste gas outlet of design is connected with the intake lines of combustion engines lateral line.
Described transmission profile 5 is provided with cooling water and advances backwater mouth 11, adopts the positive prime mode to take away the heat of transmission profile 5 inside to reduce operating temperature.
For improving Simple eccentric cam 7 and the transmission effect that contacts between wheel seat 6, adopt respectively two kinds of surface of contact of Fig. 1 and Fig. 2 (concave surface and convex surface).
Claims (5)
1. exhaust gas recirculation valve, comprise drive unit, valve seat and be connected to valve block on valve rod, the up and down control valve folding of described drive unit actuate valve stem is characterized in that: described drive unit is the Simple eccentric cam member that electric machine rotational axis directly drives; Described Simple eccentric cam member comprises the Simple eccentric cam and contacts wheel seat, rigidity contact all the time between described Simple eccentric cam and contact wheel seat; Described valve rod adopts the spring compression mode, and its top end touches with the described wheel seat bottom connection that contacts.
2. exhaust gas recirculation valve according to claim 1, it is characterized in that: described motor is torque motor.
3. exhaust gas recirculation valve according to claim 1, it is characterized in that: described contact wheel seat, valve rod are fixedly connected with valve block, rotate around stem shaft.
4. according to claim 1 or 3 described exhaust gas recirculation valve, is characterized in that: described contact wheel seat employing convex surface or concave structure.
5. exhaust gas recirculation valve according to claim 1, it is characterized in that: described valve seat comprises transmission profile and valve body, is provided with heat insulating mattress between described transmission profile and valve body, described transmission profile is provided with into return pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206938731U CN203022916U (en) | 2012-12-14 | 2012-12-14 | Exhaust gas recirculation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206938731U CN203022916U (en) | 2012-12-14 | 2012-12-14 | Exhaust gas recirculation valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203022916U true CN203022916U (en) | 2013-06-26 |
Family
ID=48646906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206938731U Expired - Fee Related CN203022916U (en) | 2012-12-14 | 2012-12-14 | Exhaust gas recirculation valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203022916U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542603A (en) * | 2016-06-27 | 2018-01-05 | 马涅蒂-马瑞利公司 | EGR valve actuator apparatus in an internal combustion engine and related EGR valve assembly |
-
2012
- 2012-12-14 CN CN2012206938731U patent/CN203022916U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542603A (en) * | 2016-06-27 | 2018-01-05 | 马涅蒂-马瑞利公司 | EGR valve actuator apparatus in an internal combustion engine and related EGR valve assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170621 Address after: 214063 Jiangsu province Binhu District of Wuxi City Qian Rong Lu No. 15 Patentee after: China FAW Group Corporation Address before: 214063 Jiangsu province Binhu District of Wuxi City Qian Rong Lu No. 15 Patentee before: Wuxi Oil Pump Nozzle Institute of First Automobile Works |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20201214 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |