CN201273227Y - Control mechanism for arranging EGR valve at hot end of diesel engine - Google Patents
Control mechanism for arranging EGR valve at hot end of diesel engine Download PDFInfo
- Publication number
- CN201273227Y CN201273227Y CNU2008200416943U CN200820041694U CN201273227Y CN 201273227 Y CN201273227 Y CN 201273227Y CN U2008200416943 U CNU2008200416943 U CN U2008200416943U CN 200820041694 U CN200820041694 U CN 200820041694U CN 201273227 Y CN201273227 Y CN 201273227Y
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- Prior art keywords
- egr valve
- valve
- diesel engine
- connecting rod
- control
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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 utility model relates to a control mechanism of an E G R valve arranged on the hot end of a diesel engine, which especially increases the dynamic response performance of the E G R valve for meeting the emission test requirements of the diesel engine for the transient state industrial and mining, and comprises an E G R cooler, an E G R valve and a control motor, and is characterized in that the E G R valve is installed on the front end of the E G R cooler, the control motor and the E G R valve are connected through a connecting rod mechanism, a driving rod is respectively hinged with a connecting rod through a ball-socket bearing component, and the connecting rod is hinged with the operating lever through a ball-socket bearing component. As the E G R valve is directly arranged on the back of an exhaust manifold and the front of the cooler, and the pipeline is short, the E G R rate is much easier to control, and the dynamic response performance is high. The control motor and circuits are arranged away from the E G R valve, which can reduce the requirements of high temperature resistance performance, and reduces the cost of the control motor.
Description
Technical field
The utility model relates to a kind of control mechanism of arranging EGR valve at diesel engine hot end, specifically improves the dynamic response performance of EGR valve, to adapt to the emission test requirement of diesel engine to the transient state industrial and mineral.
Background technique
Along with the increasingly stringent to the motor car engine emission control, the emission controls by improving combustion technology of vehicle diesel engine is also increasingly mature, adopts exhaust gas recirculation (EGR) technology can control the exhaust contaminant level of diesel engine preferably.After adopting this technology, for improving the Economy of diesel engine, EGR gas need enter in the machine after supercooling again and circulate.To EGR valve and control mechanism, the method that at present domestic and international supplier uses always is that EGR valve and control motor are controlled as a total member, need arrange better seal between EGR valve and motor simultaneously.The structural configuration of this EGR valve and motor, the unlatching of valve is a straight line motion, and the mobile power-assisted of valve itself is bigger, and under same traffic, the volume ratio of valve is bigger simultaneously; Because control motor and valve body are coupled as one, as an assembly part, therefore to the high temperature resistant requirement of controlling motor than higher.For improving the reliability of control motor, this EGR valve generally can only be arranged in the outlet end of cooler for recycled exhaust gas, be called " cold junction EGR layout ", because EGR gas enters the EGR valve again after supercooling, under the effect of micro-condensed water, nitrogen oxides from exhaust gas, particle all can produce bigger corrosion to EGR valve, seal element etc., have influence on sealing and reliability.
Cold junction EGR valve is arranged, because the pipeline (comprising cooler) of EGR valve leading portion is long, considers the response of control mechanism again, and therefore this arrangement is slow to the speed of response of EGR gas control, will have influence on the emission control of diesel transient industrial and mineral.
Summary of the invention
For overcoming the deficiency that above-mentioned cold junction EGR arranges, the utility model provides a kind of control mechanism of arranging EGR valve at diesel engine hot end, it has improved the dynamic response performance of EGR valve, to adapt to the emission test requirement of diesel engine to the transient state industrial and mineral, and the reliability of raising EGR valve and control motor, simultaneously because the heatproof of control motor is required to reduce, and reduced the cost of control motor.
The technological scheme that provides according to the utility model, the control mechanism of arranging EGR valve at diesel engine hot end comprises cooler for recycled exhaust gas, EGR valve, control motor, feature is to adopt the EGR valve to be installed in the front end of cooler for recycled exhaust gas, is connected by linkage mechanism between control motor and the EGR valve.
Described linkage mechanism mainly is made up of driveshaft, connecting rod, operating handle and ball-and-socket bearing assembly, passes through the ball-and-socket bearing member hinges between driveshaft and connecting rod and connecting rod and the operating handle respectively.
Described EGR valve directly is installed on the gas exhaust manifold back.
Compared with the prior art the utility model has the following advantages:
The utility model is because after adopting the EGR valve directly to be installed on gas exhaust manifold, before the cooler, pipeline is shorter, and EGR leads easier control, the dynamic response performance height.Control motor and circuit can reduce the requirement to resistance to high temperature away from the layout of EGR valve body.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model A～A ball-and-socket bearing assembly sectional view.
Embodiment
Shown in Figure 1, comprise cooler for recycled exhaust gas 1, EGR valve body 2, valve block 3, control motor 4, driveshaft 5, connecting rod 6, operating handle 7 and ball-and-socket bearing assembly 8 (A spherojoint 8-1, B spherojoint 8-2, spherojoint mounting rod 8-3, nut 8-4, pad 8-5) etc.
Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:
The EGR valve comprises EGR valve body 2 and valve block 3 in the utility model, and valve block 3 adopts the butterfly valve structure.The EGR valve is installed in the front end of cooler for recycled exhaust gas 1.Described EGR valve directly is installed on the gas exhaust manifold back.
This layout can obtain less circulating resistance and bigger circulation area.Control motor 4 is a stepper motor, and itself has control circuit motor, can work under the control of engine electronic control unit (ECU).Be connected by linkage mechanism between control motor 4 and the EGR valve.Described linkage mechanism mainly is made up of parts such as driveshaft 5, connecting rod 6, operating handle 7 and ball-and-socket bearing assemblies 8.Hinged between driveshaft 5 and connecting rod 6 and connecting rod 6 and the operating handle 7 by ball-and-socket bearing assembly 8.
Described ball-and-socket bearing assembly 8 is made up of A spherojoint 8-1, B spherojoint 8-2, spherojoint mounting rod 8-3, nut 8-4, pad 8-5.With nut 8-4, pad 8-5 B spherojoint 8-2 is fixed on the spherojoint mounting rod 8-3, and connects operating handle 7, A spherojoint 8-1 is installed at connecting rod 6 two respectively, and by itself and the B spherojoint 8-2 engagement that is installed on driveshaft 5, the operating handle 7.
Described ball-and-socket bearing assembly 8 has the aligning effect, can remedy the positioning tolerance that exists between connecting rod 6, the operating handle 7 preferably, has strengthened the flexibility of connecting rod 6 motions.Because the gap is very little between each joint, thus the action of stepper motor can immediate response to EGR valve block 3, speed of response is very fast, with the requirement of the transient state industrial and mineral that is adapted to motor.
Of the present utility model focusing on couples together butterfly valve and control motor with bar linkage structure, thereby solved some difficult problems on the EGR valve commonly used at present, for example, the responsiveness problem, integrity problem, just because of there being integrity problem, common EGR valve all adopts cold junction to arrange at present.After adopting the utility model, the EGR valve can be arranged and the hot junction, can be improved responsiveness.
The EGR valve is in the internal-combustion engine industry, and main purpose is the recirculation that is used for controlling waste gas, reduces the requirement discharge pollutants thereby reach, be one efficiently, the structure of high reliability.
Claims (3)
1, a kind of control mechanism of arranging EGR valve at diesel engine hot end, comprise cooler for recycled exhaust gas (1), EGR valve, control motor (4), it is characterized in that adopting the EGR valve to be installed in the front end of cooler for recycled exhaust gas (1), control motor (4) with the EGR valve between be connected by linkage mechanism.
2, the control mechanism of a kind of arranging EGR valve at diesel engine hot end according to claim 1, it is characterized in that described linkage mechanism mainly is made up of driveshaft (5), connecting rod (6), operating handle (7) and ball-and-socket bearing (8), hinged by ball-and-socket bearing assembly (8) respectively between driveshaft (5) and connecting rod (6) and connecting rod (6) and the operating handle (7).
3, the control mechanism of a kind of arranging EGR valve at diesel engine hot end according to claim 1 is characterized in that described EGR valve is installed on the gas exhaust manifold back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200416943U CN201273227Y (en) | 2008-08-28 | 2008-08-28 | Control mechanism for arranging EGR valve at hot end of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200416943U CN201273227Y (en) | 2008-08-28 | 2008-08-28 | Control mechanism for arranging EGR valve at hot end of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201273227Y true CN201273227Y (en) | 2009-07-15 |
Family
ID=40883575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200416943U Expired - Lifetime CN201273227Y (en) | 2008-08-28 | 2008-08-28 | Control mechanism for arranging EGR valve at hot end of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201273227Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400819A (en) * | 2011-12-02 | 2012-04-04 | 湖南天雁机械有限责任公司 | Diesel engine exhaust gas recirculation system cooling method and device |
-
2008
- 2008-08-28 CN CNU2008200416943U patent/CN201273227Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400819A (en) * | 2011-12-02 | 2012-04-04 | 湖南天雁机械有限责任公司 | Diesel engine exhaust gas recirculation system cooling method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINESE AUTO GROUP CO NO.1 Free format text: FORMER OWNER: WUXI DIESEL ENGINE PLANT, CHINA NO.1 AUTOMOBILES GROUP CORP. Effective date: 20101117 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 214026 NO. 9, TANGNAN BRANCH ROAD 1, NANCHANG DISTRICT, WUXI CITY, JIANGSU PROVINCE TO: 130011 NO. 2259, DONGFENG AVENUE, CHANGCHUN CITY, JILIN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20101117 Address after: 130011 Dongfeng Street, Jilin, Changchun, No. 2259 Patentee after: China FAW Group Corporation Address before: 214026, No. 9, South Branch Road, South District, Jiangsu, Wuxi Patentee before: China First Automobile Works Group Corporation Wuxi Diesel Engine Works |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090715 |