CN2751154Y - Automobile exhaust gas recirculation valve - Google Patents
Automobile exhaust gas recirculation valve Download PDFInfo
- Publication number
- CN2751154Y CN2751154Y CNU2004201203344U CN200420120334U CN2751154Y CN 2751154 Y CN2751154 Y CN 2751154Y CN U2004201203344 U CNU2004201203344 U CN U2004201203344U CN 200420120334 U CN200420120334 U CN 200420120334U CN 2751154 Y CN2751154 Y CN 2751154Y
- Authority
- CN
- China
- Prior art keywords
- valve
- gas recirculation
- diaphragm plate
- exhaust gas
- egr
- 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
Links
- 239000002184 metal Substances 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 238000005987 sulfurization reaction Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 28
- 239000002912 waste gas Substances 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000005452 bending Methods 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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- Exhaust-Gas Circulating Devices (AREA)
Abstract
The utility model relates to an automobile waste gas recirculation valve comprising a valve base, a valve rod and a valve port. The valve port comprises an upper cover, a lower cover and a diaphragm plate, wherein the upper cover and the lower cover are mutually fixed, the diaphragm plate is fixed between the upper cover and the lower cover, a gas nozzle is positioned at the central position of the outer side of the upper cover, a spring is arranged between the upper cover and the diaphragm plate, the lower cover is matched with a supporting block through a central hole, the diaphragm plate is composed of a flexible piece and a metal insert fixed at the central part of the flexible piece, and the flexible piece is provided with a ductile bending part. One end of the valve rod is positioned at one side of the inner part of an air inlet, and the other end is fixed in a groove positioned at the central position of the diaphragm plate. The utility model uses the split structure of the valve seat and the valve port, the junction structure of the diaphragm plate, and the unique design of the cross section of the rubber flexible piece; thereby, the utility model has the beneficial technical effects of reduced processing difficulty, enhanced reliability and extended service life for the waste gas recirculation valve, and changed waste gas recirculation rate and performance of environmental protection.
Description
Technical field
The utility model relates to automotive controls, particularly a kind of automobile exhaust gas recirculation (egr) valve.
Background technique
The working principle of exhaust gas recirculation (egr) valve is: when motor car engine work produces of short duration vacuum, by the valve port of exhaust gas recirculation (egr) valve is opened, the waste gas part that motor is discharged sends back to the suction tude of motor again by the inlet hole of exhaust gas recirculation valve, mixes with ozone to enter cylinder once more afterwards and burn away.Contain a large amount of CO2 in the waste gas, and CO2 can not burn, but can absorb a large amount of heat, the maximum temperature of mixture combustion in the cylinder is reduced, thereby the growing amount of NOx in the minimizing combustion process, reduce the content of NOx in the waste gas, thereby alleviate exhaust emission, reach the limit value requirement of Abgasgesetz NOx in the exhaust.
All adopt the exhaust gas recirculation (egr) valve switch to come the Control of Automobile toxic emission in US and European developed country, make discharge of automobile exhaust fumes reach specified standard.But because the complexity of this function control at present at home, only uses on high-grade automobile, and wide spectrum in, low-grade car do not obtain to adopt.Simultaneously, be contained in the structure of exhaust gas recirculation (egr) valve of automobile exhaust gas recirculation control system, the structure of diaphragm plate adopts divides a body structure, and meeting Yin Wendu in engine operation and vibrations etc. are former thereby produce and lost efficacy; And valve seat and valve port are to adopt integrative-structure, and not only Jia Gong difficulty is big, and because the material of valve seat is a cast iron, and material is comparatively loose, by working long hours of valve rod, easily cause Surface deformation and function are reduced or inefficacy.
The model utility content
The purpose of this utility model is to overcome above-mentioned defective, provides a kind of and is convenient to process, the automobile exhaust gas recirculation (egr) valve of reliability and high life.
For achieving the above object, a kind of automobile exhaust gas recirculation (egr) valve of the utility model comprises valve body and valve rod, is positioned at the support block of valve body accent and the valve port on the support block; Valve port comprise loam cake and the lower cover that interfixes and be fixed in loam cake and lower cover between diaphragm plate, valve is positioned at the central position in the loam cake outside, between loam cake and the diaphragm plate spring is housed, lower cover matches with support block by mesopore; One end of valve rod is positioned at inside one side of suction port, and the other end is fixed on the groove that is arranged in the diaphragm plate central position.
The utility model automobile exhaust gas recirculation (egr) valve, wherein said diaphragm plate adopt flexible member and are fixed in the metal insert composition at its middle part, and flexible member has ductile curved section.
The utility model automobile exhaust gas recirculation (egr) valve is equipped with packing ring between wherein said support block and the valve seat, between valve rod and the valve seat lining is housed, and lining is riveted on the chamber wall of valve seat.
The utility model automobile exhaust gas recirculation (egr) valve is equipped with pad between wherein said lower cover and the valve seat, and lower cover and valve seat are fixed with each other by tapping screw.
The utility model automobile exhaust gas recirculation (egr) valve, wherein said loam cake and lower cover adopt stainless steel material, and the two is riveted together mutually, and the sidewall of lower cover is provided with some through holes.
The utility model automobile exhaust gas recirculation (egr) valve, wherein said valve rod is riveted together mutually by the groove at diaphragm plate center.
The utility model automobile exhaust gas recirculation (egr) valve, wherein said spring adopts the spring with resistance to high temperature.
The utility model automobile exhaust gas recirculation (egr) valve, the flexible member of wherein said diaphragm plate adopt resistant to elevated temperatures rubber to make one by sulfuration and metal insert.
The utility model automobile exhaust gas recirculation (egr) valve beneficial technical effects is: owing to adopt branch body structure and the whole body structure of diaphragm plate and the unique design in rubber flexible member cross section of valve seat and valve port, not only reduced the difficulty of processing, and the reliability and the working life of having improved exhaust gas recirculation (egr) valve greatly, thereby changed ER EGR Rate, neither influence the service behaviour of motor, improved environmental-protecting performance again.
Be elaborated with reference to accompanying drawing below in conjunction with embodiment, so that the purpose of this utility model, feature and advantage are had deep understanding.
Description of drawings
Fig. 1 is the outline drawing of the utility model automobile exhaust gas recirculation (egr) valve;
Fig. 2 is the structural drawing of the utility model automobile exhaust gas recirculation (egr) valve.
Embodiment
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.
With reference to Fig. 1, the embodiment of the utility model automobile exhaust gas recirculation (egr) valve comprises the valve seat 7 of branch body structure and is positioned at the coupled valve port of accent of valve seat 7.Wherein, with reference to Fig. 2, valve seat 7 is equipped with support block 11 that is positioned at its accent and the valve rod 9 that is positioned at its chamber, and valve rod 9 stretches out from the mesopore of support block 11.Between support block 11 and the valve seat 7 packing ring 8 is housed, between valve rod 9 and the valve seat 7 lining 10 is housed, lining 10 is by on equally distributed 4 chamber walls that are riveted on valve seat 7 on its cylindrical.
Valve port comprise loam cake 1 and the lower cover 4 that interfixes and be fixed in loam cake 1 and lower cover 4 between diaphragm plate 3.Loam cake 1 and lower cover 4 adopt stainless steel material, and the two is riveted together mutually.Valve is positioned at the center in loam cake 1 outside.Between loam cake 1 and the diaphragm plate 3 spring 2 is housed.Spring 2 adopts the spring with resistance to high temperature, and the power value that guarantees spring each cross section in movement process changes balanced, can at high temperature not follow the string and makes the disabler of product.Lower cover 4 matches with support block 11 by mesopore, and its sidewall is provided with some through holes 14.Between lower cover 4 and the valve seat 7 pad 5 is housed, the two is fixed with each other by tapping screw 6.Inside one side that one end of valve rod 9 is positioned at suction port matches with lining 10, and the other end is riveted together mutually by the groove and the diaphragm plate 3 at diaphragm plate 3 centers.Diaphragm plate 3 adopts resistant to elevated temperatures rubber flexible member to make one by sulfuration and metal insert, and the rubber flexible member has ductile curved section 13.This design has not only overcome the disengaging that produces when this part adopts the split design under the situation of high temperature, and is that the easy motion up and down that supports valve rod 9 provides safeguard.
The embodiment that the utility model provides has changed traditional one design of valve seat 7 and valve port 19, and valve seat 7 is divided into two-part, and a part is a matrix valve seat 7, and another part is a valve port 19 of selecting for use the stainless steel insert structure to make.Traditional overall structure can make the valve port that is in valve seat 7 depths be difficult for processing, is difficult to guarantee shape and precision.Adopt to divide a body structure, both reduced manufacture difficulty, again because stainless wear resistance is more much better and improved reliability of products and life-span than cast iron.
The following describes the service behaviour of the utility model automobile exhaust gas recirculation (egr) valve.
In the utility model, loam cake 1 and diaphragm plate 3 form a cavity, if the valve 12 of loam cake 1 is blocked up, are the chambeies (vacuum chamber) of sealing.When being ECU, the engine control computer in time opens or closes according to rotating speed, load (throttle opening), temperature, charge flow rate, the delivery temperature control electromagnetic valve of motor, intake depression enters the vacuum chamber of exhaust gas recirculation valve through solenoid valve, and diaphragm plate 3 pulling valve rod 9 opens or closes exhaust gas recirculation (egr) valve.According to degree of vacuum difference in the cylinder, the degree of the valve port that control valve rod 9 is opened is also just different.Be reflected to the degree of vacuum of valve vacuum chamber by cylinder, valve is controlled valve rod 9 motions that diaphragm plate 3 drives by the decrement of Regulation spring 2, make the valve opening difference, control passes in and out the size of tolerance thus: comprise the state of closing, threshold state, intermediateness and full open position etc., discharging maintenance with gaseous combustion pressure size and waste gas body in the automobile engine cylinder organically combines, provide variation that the exhaust gas flow that varies in size (degree of vacuum of vacuum chamber is transmitted to signal by pressure transducer the control system of computer) is provided according to the degree of vacuum in the engine cylinder, realize the exhaust gas recirculation purpose and change ER EGR Rate, at this moment, neither influence the service behaviour of motor, reached the purpose of improving environmental protection again.
Claims (8)
1. the automobile exhaust gas recirculation (egr) valve comprises valve body (7) and valve rod (9), it is characterized in that: also comprise and be positioned at the support block (11) of described valve body (7) accent and the valve port on the described support block (11); Described valve port comprise loam cake (1) and the lower cover (4) that interfixes and be fixed in described loam cake (1) and lower cover (4) between diaphragm plate (3), the center that is positioned at described loam cake (1) outside is provided with valve (12), between described loam cake (1) and the described diaphragm plate (3) spring (2) is housed, described lower cover (4) matches with described support block (11) by mesopore, described valve rod (9) stretches out and is fixed on the groove that is arranged in described diaphragm plate (3) center from the mesopore of described support block (11), and the sidewall of described lower cover (4) is provided with some through holes (14).
2. automobile exhaust gas recirculation (egr) valve according to claim 1, wherein said diaphragm plate (3) adopt flexible member and are fixed in the metal insert composition of its central part, and flexible member has ductile curved section (13).
3. automobile exhaust gas recirculation (egr) valve according to claim 1 and 2, between wherein said support block (11) and the described valve body (7) packing ring (8) is housed, between described valve rod (9) and the described valve body (7) lining (10) is housed, described lining (10) is riveted on the chamber wall of described valve body (7).
4. automobile exhaust gas recirculation (egr) valve according to claim 3 is equipped with pad (5) between wherein said lower cover (4) and the described valve body (7), and the two is fixed with each other by tapping screw (6).
5. automobile exhaust gas recirculation (egr) valve according to claim 4, wherein said loam cake (1) and lower cover (4) adopt stainless steel material, and the two is riveted together mutually.
6. automobile exhaust gas recirculation (egr) valve according to claim 5, wherein said valve rod (9) is riveted together mutually with the groove of described diaphragm plate (3).
7. automobile exhaust gas recirculation (egr) valve according to claim 6, wherein said spring (2) adopts the spring with resistance to high temperature.
8. automobile exhaust gas recirculation (egr) valve according to claim 7, the flexible member of wherein said diaphragm plate (3) adopt resistant to elevated temperatures rubber to make one by sulfuration and described metal insert.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004201203344U CN2751154Y (en) | 2004-12-17 | 2004-12-17 | Automobile exhaust gas recirculation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004201203344U CN2751154Y (en) | 2004-12-17 | 2004-12-17 | Automobile exhaust gas recirculation valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2751154Y true CN2751154Y (en) | 2006-01-11 |
Family
ID=35932330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2004201203344U Expired - Fee Related CN2751154Y (en) | 2004-12-17 | 2004-12-17 | Automobile exhaust gas recirculation valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2751154Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691594A (en) * | 2012-06-27 | 2012-09-26 | 无锡隆盛科技股份有限公司 | EGR (exhaust gas recirculation) valve capable of automatically adjusting stress balance of valve rod |
| CN108979906A (en) * | 2018-08-03 | 2018-12-11 | 潍柴动力股份有限公司 | A kind of EGR valve and engine |
| CN111042957A (en) * | 2019-12-31 | 2020-04-21 | 常州美安机电有限公司 | Exhaust gas recirculation control valve for explosion-proof engine |
-
2004
- 2004-12-17 CN CNU2004201203344U patent/CN2751154Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691594A (en) * | 2012-06-27 | 2012-09-26 | 无锡隆盛科技股份有限公司 | EGR (exhaust gas recirculation) valve capable of automatically adjusting stress balance of valve rod |
| CN108979906A (en) * | 2018-08-03 | 2018-12-11 | 潍柴动力股份有限公司 | A kind of EGR valve and engine |
| CN108979906B (en) * | 2018-08-03 | 2020-11-20 | 潍柴动力股份有限公司 | EGR valve and engine |
| CN111042957A (en) * | 2019-12-31 | 2020-04-21 | 常州美安机电有限公司 | Exhaust gas recirculation control valve for explosion-proof engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Huangshan Automotive Electric Apparatus Co., Ltd. Assignor: Wang Jinding Contract record no.: 2011340000323 Denomination of utility model: Automobile exhaust gas recirculation valve Granted publication date: 20060111 License type: Exclusive License Record date: 20110811 |
|
| ASS | Succession or assignment of patent right |
Owner name: CHANGHUI AUTO-ELECTRI (HUANGSHAN) JOINT-STOCK COMP Free format text: FORMER OWNER: WANG JINDING Effective date: 20130131 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130131 Address after: 245436 Xikou in Anhui County of Xiuning Province town Patentee after: Chang Hui automobile electric appliance (Mount Huangshan) Co., Ltd. Address before: 245436 Anhui province Huangshan City Xiuning Xikou Huangshan City Automobile Electric Co. Ltd. Patentee before: Wang Jinding |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060111 Termination date: 20131217 |