CN202250477U - EGR linear valve of car - Google Patents
EGR linear valve of car Download PDFInfo
- Publication number
- CN202250477U CN202250477U CN2011204000924U CN201120400092U CN202250477U CN 202250477 U CN202250477 U CN 202250477U CN 2011204000924 U CN2011204000924 U CN 2011204000924U CN 201120400092 U CN201120400092 U CN 201120400092U CN 202250477 U CN202250477 U CN 202250477U
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- China
- Prior art keywords
- valve
- valve rod
- linear
- egr
- valve seat
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- 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 - Lifetime
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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)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The utility model discloses an EGR linear valve of a car. The EGR linear valve consists of a valve seat and a valve rod, wherein an air inlet connected with an exhausting pipe of an engine and an air outlet connected with an air inlet branch pipe of the engine are mounted on the valve seat; one end of the valve rod is provided with a valve that is matched with the air outlet on the valve seat; the valve rod can be driven via a valve rod subassembly to move along the axes of the valve rod; the valve rod subassembly can be controlled to linearly move along the axes of the valve rod through a coil bag assembly on the valve seat; the valve rod subassembly is mounted between the valve rod and the coil bag assembly. The EGR linear valve disclosed by the utility model is capable of precisely controlling the flow rate of tail gas of the car flowed into the firebox of the engine under different working conditions of the engine, ass well as reducing the exhausted pollution without influencing the performance of the engine.
Description
Technical field
The utility model relates to engine exhaust emission control gear technical field, especially relates to a kind of automobile EGR linear valve.
Background technique
At present; The working principle of the EGR threshold switch in the exhaust steam passage of automobile engine tail gas discharging waste gas recirculation is: the intake manifold that sends back to motor through the waste gas part that motor is discharged through the EGR valve again; Mixing gets into cylinder afterwards once more with ozone, participates in burning.Contain a large amount of CO in the waste gas
2, and CO
2Can 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, the content of NOx alleviates exhaust emission in the reduction waste gas; Thereby make more clean environment firendly of motor car engine, alleviate pollution environment.
Mostly existing automobile exhaust gas recirculation EGR valve is to realize exhaust gas recirculation through vacuum degree control, can not control the circular flow of waste gas accurately, can only qualitatively judge rough control.Like Chinese patent 200420120334.4 disclosed a kind of automobile exhaust gas recirculation (egr) valves and one Chinese patent application 201010254742.9 disclosed a kind of EGR valves with closure all is to realize exhaust gas recirculation through vacuum control; The circular flow control accuracy of waste gas is poor, can only control roughly.
The model utility content
The purpose of the utility model provides a kind of automobile EGR linear valve, is mostly to qualitatively judge rough control, the problem of the circular flow control accuracy difference of waste gas to solve existing automobile EGR valve.This valve can be controlled the flow size that gets into the engine chamber vehicle exhaust under the Under Different Work Condition of Engine accurately, realizes alleviating exhaust emission simultaneously, does not influence engine performance.
The utility model solves the technological scheme that its technical problem adopted: a kind of automobile EGR linear valve; Comprise valve seat and valve rod; Described valve seat is provided with the suction port and the air outlet that is connected engine intake manifold that connects engine exhaust pipe, described valve rod one end be provided with valve seat on the suitable valve in air outlet; Described valve rod drives through valve rod assembly can be movable along valve rod axis, and it is linear movable that described valve rod assembly is controlled along valve rod axis through the coil bag assembly on the valve seat, and described valve rod assembly is located between valve rod and the coil bag assembly.
Described valve rod assembly comprises that the hexagon nut, the coil bag assembly that are located at the valve rod the other end control mobilizable piston, and described piston matches with hexagon nut.
Described piston is " T " font, and hexagon nut one end face on described piston middle part high spot end face and the valve rod is suitable.
When described automobile EGR linear valve was not worked, described hexagon nut matched gapped between the end face with piston.
Described valve seat is provided with fixed base, and described coil bag assembly is stuck between the top board that is located on the fixed base, the press table.
Described fixed base is provided with the valve opening degree is truly fed back to the position transducer that vehicle-mounted ECU is also passed through the control valve opening degree of vehicle-mounted ECU.
Support block on the described valve seat is provided with stage clip, and described stage clip had precompression to valve when automobile EGR linear valve was in normally off.
The beneficial effect of the utility model: owing on fixed base, be provided with coil bag assembly; Adjustment comes the opening degree of control valve through the voltage swing of coil bag assembly; Thereby the linear change control valve opening degree of voltage is linear change, thus accurate Control of Automobile tail gas circuit flow.Can under Under Different Work Condition of Engine, utilize the position sensor feedback signal to make the vehicle exhaust circulation obtain controlling more accurately, when realizing alleviating exhaust emission, not influence engine performance.Stage clip had precompression to valve when automobile EGR linear valve was in normally off, the leakage flow when having reduced valve closing, the tightness when improving valve closing.This valve mechanism is simple, and the production assembly process is simple to operate.
Below will combine accompanying drawing and embodiment, the utility model will be carried out comparatively detailed explanation.
Description of drawings
Fig. 1 is the utility model automobile EGR linear valve cross-sectional schematic.
Fig. 2 is piston and a hexagon nut place partial sectional view in the utility model.
Fig. 3 is the plan view of automobile EGR linear valve among Fig. 1.
Among the figure: 1. valve seat, 2. valve rod, 20. valves, 3. support block, 4. first pad, 5. supporting sleeve, 6. stage clip, 7. packing ring, 8. press table, 9. piston, 10. second pad, 11. hexagon nuts, 12. sleeves, 13. top boards, 14. coil bag assemblies, 15. fixed bases, 16. position transducers, 17. suction ports, 18. air outlets.
Embodiment
Extremely shown in Figure 3 like Fig. 1; A kind of automobile EGR linear valve; Comprise valve seat 1 and valve rod 2; Described valve seat 1 is provided with the suction port 17 and the air outlet that is connected engine intake manifold 18 that connects engine exhaust pipe, described valve rod 2 one ends be provided with valve seat on the suitable valve 20 in air outlet 18, described valve shape is a frustum.In order to realize the purpose of the utility model; Described valve rod 2 drives through valve rod assembly can be movable along valve rod axis; It is linear movable that described valve rod assembly is controlled along valve rod axis through the coil bag assembly 14 on the valve seat, and described valve rod assembly is located between valve rod 2 and the coil bag assembly 14.Change through the voltage linear in the coil bag assembly 14, control valve 20 opening degrees are linear change, thus accurate Control of Automobile tail gas circuit flow.
The valve rod assembly of this automobile EGR linear valve comprises that the hexagon nut 11, the coil bag assembly that are located at the valve rod the other end control mobilizable piston 9; Described piston is " T " font, and hexagon nut one end face on described piston middle part high spot one end face and the valve rod is suitable; Be provided with second pad 10 between the step surface on piston high spot other end, middle part and the valve rod; The piston outside is provided with sleeve 12, piston can be in sleeve flexible motion.Described valve seat 1 is provided with fixed base 15, and described coil bag assembly 14 is stuck between the top board 13 that is located on the fixed base, the press table 8; Owing to the waste gas that motor is discharged is flow through in suction port and air outlet from valve seat, make the valve seat temperature higher, therefore between described valve seat and fixed base, be provided with the supporting sleeve 5 that has cavity, be provided with the screw of connection and fixation in the supporting sleeve.
In order to eliminate the sudden change of piston from static to when motion, designed one section idle stroke of piston motion, eliminated static sudden change, thereby the whole opening process of having guaranteed product is linear change to motion.Be described automobile EGR linear valve when not working, described hexagon nut matches gapped between the end face with piston.
In order to control tail gas circulating load under the Under Different Work Condition of Engine accurately, described fixed base is provided with the valve opening degree is truly fed back to the position transducer 16 that vehicle-mounted ECU is also passed through the control valve opening degree of vehicle-mounted ECU.
Leakage flow when reducing valve closing, the tightness when improving valve closing, the support block 3 on the described valve seat 1 is provided with stage clip 6, and the stage clip outside is provided with packing ring 7, establishes first pad 4 between packing ring and the support block.Described stage clip had precompression to valve when automobile EGR linear valve was in normally off.
In the utility model; The open and close that come control valve through the break-make of control coil bag assembly voltage; Provide the size of coil bag assembly voltage to come the opening degree of control valve through adjustment; Thereby the linear change control valve opening degree of voltage is linear change, thus Accurate Control of Automotive tail gas circuit flow; Whether meet the requirements and through vehicle-mounted ECU reparation adjustment valve opening degree through position sensor feedback signal determining linear valve open degree, thereby control different tail gas circuit flows under the Under Different Work Condition of Engine more accurately.This automobile EGR linear valve is the control valve opening degree accurately, and accurately control gets into the flow size of engine chamber vehicle exhaust, when realizing alleviating exhaust emission, does not influence engine performance.
Claims (7)
1. automobile EGR linear valve; Comprise valve seat (1) and valve rod (2); Described valve seat (1) is provided with the suction port (17) and the air outlet that is connected engine intake manifold (18) that connects engine exhaust pipe, described valve rod (2) one ends be provided with valve seat on the suitable valve (20) in air outlet (18); It is characterized in that: described valve rod (2) drives through valve rod assembly can be movable along valve rod axis; It is linear movable that described valve rod assembly is controlled along valve rod axis through the coil bag assembly (14) on the valve seat, and described valve rod assembly is located between valve rod and the coil bag assembly.
2. automobile EGR linear valve as claimed in claim 1 is characterized in that: described valve rod assembly comprises that the hexagon nut (11), the coil bag assembly that are located at the valve rod the other end control mobilizable piston (9), and described piston matches with hexagon nut.
3. automobile EGR linear valve as claimed in claim 2 is characterized in that: described piston (9) is " T " font, and hexagon nut one end face on described piston middle part high spot end face and the valve rod is suitable.
4. automobile EGR linear valve as claimed in claim 3 is characterized in that: when described automobile EGR linear valve was not worked, described hexagon nut matched gapped between the end face with piston.
5. automobile EGR linear valve as claimed in claim 1 is characterized in that: described valve seat (1) is provided with fixed base (15), and described coil bag assembly (14) is stuck between the top board (13) that is located on the fixed base, the press table (8).
6. automobile EGR linear valve as claimed in claim 5 is characterized in that: described fixed base (15) is provided with the valve opening degree is truly fed back to the position transducer (16) that vehicle-mounted ECU is also passed through the control valve opening degree of vehicle-mounted ECU.
7. automobile EGR linear valve as claimed in claim 1 is characterized in that: the support block (3) on the described valve seat (1) is provided with stage clip (6), and described stage clip had precompression to valve when automobile EGR linear valve was in normally off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204000924U CN202250477U (en) | 2011-10-19 | 2011-10-19 | EGR linear valve of car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204000924U CN202250477U (en) | 2011-10-19 | 2011-10-19 | EGR linear valve of car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202250477U true CN202250477U (en) | 2012-05-30 |
Family
ID=46111732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204000924U Expired - Lifetime CN202250477U (en) | 2011-10-19 | 2011-10-19 | EGR linear valve of car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202250477U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337987A (en) * | 2011-10-19 | 2012-02-01 | 黄山市汽车电器股份公司 | EGR (exhaust air recirculation) linear valve for automobile |
| CN106246418A (en) * | 2016-08-25 | 2016-12-21 | 宁波新思创机电科技股份有限公司 | A kind of control valve of automobile exhaust gas recirculating system |
-
2011
- 2011-10-19 CN CN2011204000924U patent/CN202250477U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337987A (en) * | 2011-10-19 | 2012-02-01 | 黄山市汽车电器股份公司 | EGR (exhaust air recirculation) linear valve for automobile |
| CN106246418A (en) * | 2016-08-25 | 2016-12-21 | 宁波新思创机电科技股份有限公司 | A kind of control valve of automobile exhaust gas recirculating system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHANGHUI AUTO-ELECTRI (HUANGSHAN) JOINT-STOCK COMP Free format text: FORMER NAME: HUANGSHAN CITY AUTO-ELECTRIC CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 245400 Xikou in Anhui province Huangshan City town of Xiuning County Patentee after: Chang Hui automobile electric appliance (Mount Huangshan) Co., Ltd. Address before: 245400 Xikou in Anhui province Huangshan City town of Xiuning County Patentee before: Huangshan Automotive Electric Apparatus Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |