CN202926494U - Exhaust gas recirculation (EGR) valve - Google Patents
Exhaust gas recirculation (EGR) valve Download PDFInfo
- Publication number
- CN202926494U CN202926494U CN2012206380299U CN201220638029U CN202926494U CN 202926494 U CN202926494 U CN 202926494U CN 2012206380299 U CN2012206380299 U CN 2012206380299U CN 201220638029 U CN201220638029 U CN 201220638029U CN 202926494 U CN202926494 U CN 202926494U
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- China
- Prior art keywords
- valve
- magnetic element
- exhaust gas
- gas recirculation
- drive unit
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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 - 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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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The utility model discloses an exhaust gas recirculation (EGR) valve, which mainly comprises a valve body, a valve assembly, a driving device and a measuring device, wherein the valve assembly is arranged inside the valve body; the driving device is used for driving the valve assembly to move; and the measuring device is used for measuring the position of the valve. The EGR valve is characterized in that the driving device is used for driving rotationally; and the measuring device is a non-contact angle measuring device. A magnetic element is driven to rotate through the driving device, the change of a magnetic field direction is sensed by using a Hall effect device, and the rotating angle of the driving device is determined, so that the non-contact angle measuring device for determining the position of the valve is realized. When the magnetic element rotates along with a rotating shaft of the driving device, the magnetic element is not contacted with a measuring component, and the problems of friction, impact and the like between the magnetic element and the measuring component are solved, so that faults of wear and ageing are prevented. Due to the adoption of the structure of the EGR valve, a valve position monitoring device of the EGR valve is simplified, and the adaptability and reliability of the EGR valve in severe use environments are enhanced.
Description
Technical field
The utility model relates to a kind of exhaust gas recirculation valve that is installed on the engine exhaust gas recirculating line.
Background technique
Aspect solution internal-combustion engine discharged nitrous oxides, adopt the EGR Technology successful, therefore approved by increasing producer, and be widely applied.Exhaust gas recirculation valve is the key components and parts of EGR Technology, by the flow of EGR valve regulation EGR, realizes the required amount of exhaust gas recirculation of each operating mode of internal-combustion engine.
The engine electric control EGR exhaust gas recirculation valve with displacement transducer that a kind of proportion electro-magnet drives is disclosed in patent CN2720133Y, when utilizing valve to move, band dynamic sensor movable contact moves, the mode that changes resistance value obtains the magnitude of voltage detection valve location of diverse location, belongs to the resistance tangent displacement sensor.This structure shift sensor reliability is relatively poor, easily causes the system failure.
A kind of variable reluctance position sensor of announcing in patent CN101273194A, it adopts the Hall effect induction, utilizes the variation of movable part scanning cross-section on moving direction, and the magnetic flux that Hall effect device receives is changed, thereby determines the position of motion.This technology has realized the function of non-contact detection position, but due to the movable part that must have to move in fixed magnetic field, and this member will constantly change in the cross section during through magnetic field, could realize the function that detects.This structure has specific (special) requirements to the shape in the cross section in inswept magnetic field, makes sensor construction become complicated.
Summary of the invention
The utility model provides a kind of exhaust gas recirculation valve, with the Non-contact Angle Measurement device, simple in structure, can be real-time, reliable, stable provide valve current location accurately to controller, can utilize the valve position signal of feedback to realize feedback control, realize the accurate control of exhaust gas recirculation valve.
The exhaust gas recirculation valve that the utility model is described, mainly comprise valve body, be arranged on the valve member of valve inner, the drive unit of actuating valve door assembly motion and the measuring device of measurement valve location, it is characterized in that: described drive unit is rotary driving, and described measuring device is the Non-contact Angle Measurement device.Because adopt the Non-contact Angle Measurement device, the heat of high-temp waste gas can't be delivered to this measuring device; And this measuring device is disposed in drive unit inside, whole exhaust gas recirculation valve compact structure, better to abominable operating conditions adaptability.Adopt the Non-contact Angle Measurement device based on above reason, no longer need to consider high-temp waste gas to the impact of measuring device, and measuring device designs simplification, cost, reliability improve.
The Non-contact Angle Measurement device of exhaust gas recirculation valve is the Non-contact Angle Measurement device based on Hall element, comprises a magnetic element and measurement component.Magnetic element can be selected magnet steel.One hall sensing element is arranged on measurement component, relative with magnetic element, and and magnetic element between leave the space.Magnetic element is during with the rotation of the running shaft of drive unit, measuring circuit is sensed the variation in magnetic field, the angle of swing that calculates magnetic element is the corner of drive unit running shaft, thereby obtains the valve location of exhaust gas recirculation valve, and measurement component is exported to peripheral control unit with the valve location that obtains.Controller is regulated in real time the valve location of exhaust gas recirculation valve, and is revised according to the valve location of measuring device Real-time Feedback according to the operating mode of motor operation, reaches the accurate control of exhaust gas recirculation valve.Measurement component and magnetic element are arranged in drive unit inside, the signal input output of measurement component and the input signal of drive unit are connected to the interface that is arranged in the drive unit outside by the input/output signal line, realize safe and reliable the connection with exterior strands.This connection interface can be made an integral body with the drive unit shell, also can adopt interface unit to be arranged on the drive unit outside.
Magnetic element can be fixed on the running shaft of drive unit in any way, and magnetic element is connected fastening with running shaft, with running shaft without relative movement.Can directly magnetic element be fixed on the live axle head, also can adopt the mode of transition piece that magnetic element is fixed on the running shaft head, transition piece can adopt interference fit to fix, and also can fix with screw thread, perhaps adopts glue to fix.Transition piece adopts non-magnet material, such as non-magnet materials such as copper, polyethylene.The magnetic element shape does not have specific (special) requirements, the general circle or square that adopts.
Measurement component is that the sense cell that the circuit board that is printed with measuring circuit, electronic component and induction field change forms.Measurement component can be arranged according to the drive unit internal structure, utilize its inner clearance spaces as far as possible, with being connected firmly of drive unit, reliably, usually can adopt screw, buckle, glue fastening.The installation of measurement component makes sense cell relative with magnetic element, and leaves the space between sense cell and magnetic element.Measurement component can be measured the interior angle of a rotation round of magnetic element.When magnetic element and measurement component inner reliable installation of drive unit, after drive unit and valve body are completed last assembling, need to carry out initialization to initial position and the final position of valve, and initialization data is recorded in measurement component, in the exhaust gas recirculation valve working procedure, valve will change in initialized this position range.
Therefore in above-mentioned scheme, when magnetic element rotated with the drive unit running shaft, magnetic element did not contact with measurement component, did not have the problems such as friction, impact between the two, can not occur wearing and tearing, aging fault.The utility model designs simplification EGR valve valve location monitoring device, improve adaptability and the reliability of abominable Environmental Conditions.
Description of drawings
Can more clearly set forth by reference to the accompanying drawings the annexation between technical characterstic that the utility model relates to, related each functional entity.
Fig. 1 is the Non-contact Angle Measurement device embodiment one on exhaust gas recirculation valve;
Fig. 2 is embodiment's schematic diagram that magnetic element is arranged on the running shaft counterbore;
Fig. 3 is that magnetic element has counterbore to be arranged on embodiment's schematic diagram on running shaft;
Fig. 4 is that magnetic element is arranged on the embodiment's schematic diagram on running shaft threadably.
Embodiment
A kind of exhaust gas recirculation valve mainly comprises valve body, is arranged on the valve member of valve inner, the drive unit of actuating valve door assembly motion and the measuring device of measurement valve location.Described drive unit is rotary driving, includes the running shaft with the drive unit rotation.Described measuring device is the Non-contact Angle Measurement device based on Hall element, comprises magnetic element and measurement component, and both relatively install and be gapped between the two.Magnetic element is fixed on running shaft.
Structure shown in accompanying drawing 1 and accompanying drawing 2 is the embodiment of scheme noted earlier.
Embodiment one as shown in Figure 1, its structure adopts transition piece 8 magnetic element 6 to be fixed on the end of the running shaft 4 of drive unit 9.Drive unit 9 receives the control signal of controller, and running shaft 4 namely begins direction rotation on request, because magnetic element 6 is fastenedly connected by transition piece 8 and running shaft, both are without relative movement, so magnetic element is followed the running shaft rotation.The position relative with magnetic element 6 is equipped with measurement component 5, and this measurement component 5 is fixed on seal closure 10 inboards of drive unit 9, adopts glue to fix, and also can be screwed.One sense cell 7 is arranged on measurement component 5, and it is relative with magnetic element 6, and with over against being arranged as the best.Between two elements, pitch angle control is in 30 °, and gap control is at 0.8mm～2.2mm.The power supply of measurement component 5 and signal output are connected to external interface 1 by input/output signal line 3, and the control signal of drive unit is connected with external interface 1 by input signal cable 2.Exhaust gas recirculation valve is connected with controller by wire harness by external interface 1, receives and feed back control signal and the position signal of exhaust gas recirculation valve.
In 2 couples of embodiments one of accompanying drawing, magnetic element 6 has been done further simplification with the linkage structure of running shaft 4, realizes same function.The present embodiment directly is fixed on magnetic element 6 running shaft 4 ends of drive unit.Placement adopts the counterbore of processing in running shaft 4 ends, and magnetic element 6 is installed in counterbore reliably.Magnetic element 6 thickness are more than or equal to this counterbore degree of depth.
The Placement that magnetic element 6 directly is fixed on drive unit running shaft 4 ends can also adopt magnetic element that counterbore is arranged, running shaft 4 and magnetic element 6 counterbore interference fit, as shown in Figure 3.In addition, can also adopt to be threaded, as shown in Figure 4.
Claims (6)
1. exhaust gas recirculation valve, mainly comprise valve body, be arranged on the valve member of valve inner, the drive unit of actuating valve door assembly motion and the measuring device of measurement valve location, it is characterized in that: described drive unit is rotary driving, and described measuring device is the Non-contact Angle Measurement device.
2. exhaust gas recirculation valve as claimed in claim 1 is characterized in that: described Non-contact Angle Measurement device comprises magnetic element and measurement component for the Non-contact Angle Measurement device based on Hall element, and both relatively install and be gapped between the two.
3. exhaust gas recirculation valve as claimed in claim 2 is characterized in that: described magnetic element and measurement component are positioned at drive unit inside.
4. exhaust gas recirculation valve as claimed in claim 2, it is characterized in that: described magnetic element is fixedly mounted on the running shaft of drive unit.
5. exhaust gas recirculation valve as claimed in claim 2, it is characterized in that: described magnetic element is fixedly mounted on the running shaft of drive unit by transition piece.
6. as claim 2,3,4 or 5 described exhaust gas recirculation valve, it is characterized in that: described magnetic element adopts magnet steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206380299U CN202926494U (en) | 2012-11-28 | 2012-11-28 | Exhaust gas recirculation (EGR) valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206380299U CN202926494U (en) | 2012-11-28 | 2012-11-28 | Exhaust gas recirculation (EGR) valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202926494U true CN202926494U (en) | 2013-05-08 |
Family
ID=48216466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206380299U Expired - Fee Related CN202926494U (en) | 2012-11-28 | 2012-11-28 | Exhaust gas recirculation (EGR) valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202926494U (en) |
-
2012
- 2012-11-28 CN CN2012206380299U patent/CN202926494U/en not_active Expired - Fee Related
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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 | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170616 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 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20201128 |