CN104727989B - A kind of electric EGR valve - Google Patents
A kind of electric EGR valve Download PDFInfo
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- CN104727989B CN104727989B CN201510127585.8A CN201510127585A CN104727989B CN 104727989 B CN104727989 B CN 104727989B CN 201510127585 A CN201510127585 A CN 201510127585A CN 104727989 B CN104727989 B CN 104727989B
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- Prior art keywords
- valve
- housing
- torsion spring
- sector gear
- motor
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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 invention discloses a kind of electric EGR valve,Including housing,Motor,Valve rod and valve block,The motor is arranged in housing,Motor is connected with idler gear,The idler gear is engaged with sector gear,The sector gear is connected with torsion spring seat,Return torsion spring is connected with the torsion spring seat,The other end of return torsion spring is fixed on housing,The sector gear is fixed on the driving shaft,The drive shaft is spindle rotationally arranged in housing by rolling bearing and sliding bearing,And induced magnet is additionally provided with drive shaft,The induced magnet is electrically connected with Hall sensor,Cam path is further opened with sector gear,Camshaft bearing is provided with the cam path,The camshaft bearing is connected with camshaft bearing axle and camshaft bearing support,The upper end of the valve rod is connected with the camshaft bearing support,Lower end is connected with valve block,The EGR valve control is accurate,It is easy to assembly,Fault rate is low.
Description
Technical field
The present invention relates to automobile current generator field, more particularly to a kind of electric EGR valve.
Background technology
Electric EGR valve is mounted on engine, for controlling the electromechanics of the amount of exhaust gas recirculation for feeding back to gas handling system
Whether integration product, is most critical, most crucial part in ERG, the reliable and stable direct shadow of its work
Ring discharge and the normal work of engine.This structure accurately can be controlled to lift of valve plate position, then precise control
EGR rate.In addition, the gas recirculation system on automobile, its general principle be a part of waste gas for discharging engine again
Gas handling system is introduced, so as to improve combustibility, formation and waste discharge amount to NOx in air is arranged to reduce engine,
Reduce the pollution and the formation of haze to air.
For traditional electric EGR valve, there is the following shortcoming：
1) contact position sensor is used：Sensors with auxiliary electrode could complete the biography of signal due to that must rely on contact
Pass, after long-play, due to mechanical wear etc. factor, signal transmission distortion or sluggishness can be caused, then valve body cannot be opened
Degree carries out precise control, influences engine emission.
2) return spring is high in the requirement of fit on difficulty in valve block return controlling organization, and assembling easily goes wrong, it is impossible to
Realize rapid return function.
The content of the invention
It is an object of the invention to provide a kind of simple electric EGR valve of assembling of use noncontacting proximity sensor.
To achieve the above object, the present invention provides following technical scheme：
A kind of electric EGR valve, including housing, motor, valve rod and valve block, the motor are arranged in housing,
Motor is connected with idler gear, and the idler gear is engaged with sector gear, and the sector gear is connected with torsion spring
Seat, is connected with return torsion spring on the torsion spring seat, the other end of return torsion spring is fixed on housing, and the sector gear is fixed on
In drive shaft, the drive shaft is spindle rotationally arranged in housing by rolling bearing and sliding bearing, and is also set in drive shaft
Induced magnet is equipped with, the induced magnet is electrically connected with Hall sensor, cam path, the cam path are further opened with sector gear
Inside be provided with camshaft bearing, the camshaft bearing is connected with camshaft bearing axle and camshaft bearing support, the upper end of the valve rod with
The camshaft bearing support connection, lower end is connected with valve block.
As further scheme of the invention：Linear bearing part, the linear axis bearing portion are also arranged with the valve rod
Part is fixed in housing, and the linear bearing part center offers the installation through-hole for installing valve rod, and installation through-hole is upper and lower
Both sides offer in upper and lower mounting groove, the upper mounting groove and are from up to down disposed with pad and upper O-ring, the lower peace
Lower O-ring, internal gasket and outer pad are from up to down disposed with tankage, the outer pad is fixed on lower installation by rivet
In groove, and internal gasket and lower O-ring are encapsulated in lower mounting groove, the internal gasket coordinates with valve lever clearance, the valve rod position
Circlip groove is offered in coordinating on the position of upper and lower O-ring.
As further scheme of the invention：The rolling bearing is arranged between torsion spring seat and drive shaft, the slip
Bearing is arranged on drive shaft away from one end of sector gear.
As further scheme of the invention：The induced magnet is fixed on the close sector of drive shaft by magnetic receiver
On one end of wheel.
As further scheme of the invention：Wavy spring is provided between the motor and housing.
As further scheme of the invention：Valve pocket is provided with the valve block.
Beneficial effects of the present invention are：
1st, Hall sensor is coordinated using induced magnet, forms contactless angular transducer, solve contact position
After putting sensor long-play, due to mechanical wear etc. factor, signal transmission distortion or sluggishness, valve body aperture control can be caused
System is accurate.
2nd, the sector gear and torsion spring seat integrally connected, are connected with return torsion spring, three in one connection, peace on torsion spring seat
Dress is convenient.
3rd, the linear bearing part being arranged on the valve rod of the EGR valve：1) it is upper and lower by what is set in linear bearing part
O-ring goes the back-up ring that is opened up on valve rod to coordinate makes valve rod installation site more accurate, 2) when valve rod moves up and down, by linear axis
The internal gasket that bearing portion part is set can remove the most of soot particles on valve rod, prevent EGR valve clamping stagnation.
4th, wavy spring is provided between the motor and housing, makes the shock-absorbing function of motor more perfect,
Assembly precision requirement is reduced, and the service life of improve production efficiency and EGR valve reduces crash rate.
Brief description of the drawings
The sectional view of the EGR valve that Fig. 1 is provided for the present invention；
The front cross sectional view of the EGR valve that Fig. 2 is provided for the present invention；
The sectional view of the linear bearing part of the EGR valve that Fig. 3 is provided for the present invention；
The partial schematic diagram of the sector gear of the EGR valve that Fig. 4 is provided for the present invention.
In figure：1st, motor；2nd, wavy spring；3rd, idler gear；4th, sector gear；41st, cam path；5th, torsion spring seat；
6th, return torsion spring；7th, drive shaft；8th, rolling bearing；9th, cover；10th, sliding bearing；11st, magnetic receiver；12nd, induced magnet；13rd, it is convex
Wheel bearing；14th, camshaft bearing axle；15th, camshaft bearing support；16th, valve rod；161st, 17, linear bearing part；171st, Upper gasket；
172nd, upper O-ring；173rd, lower O-ring；174th, internal gasket；175th, outer pad；176th, upper mounting groove；177th, lower mounting groove；178、
Installation through-hole；18th, valve block；19th, valve pocket；20th, housing.
Specific embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by specific embodiment.
Fig. 1 to Fig. 4, the electric EGR valve, including housing 20, motor 1, valve rod 16 and valve block 18 are referred to, it is described
Motor 1 be arranged on housing 20 topmost in, and motor 1 rear end and housing 20 between be provided with the waveform bullet of damping
Spring 2, the motor 1 is connected with idler gear 3, and the idler gear 3 is engaged with sector gear 4, after the sector gear 4
End is connected with torsion spring seat 5, and return torsion spring 6 is connected with the torsion spring seat 5, and the other end of return torsion spring 6 is fixed on housing
On 20, the torsion spring seat 5 of the sector gear 4 and integrally connected is fixed on the one end of drive shaft 7, and the drive shaft 7 passes through
Rolling bearing 8 and sliding bearing 10 are spindle rotationally arranged in housing 20, and the rolling bearing 8 is arranged on torsion spring seat 5 and drives
Between axle 7, the sliding bearing 10 is arranged on drive shaft 7 away from one end of sector gear 4, and the housing 20 is located at drive shaft
A capping 9 is additionally provided with 4 back-end locations, the drive shaft 4 is located at and is provided with induced magnet on one end of sector gear 4
12, the induced magnet 12 is fixed in drive shaft 4 by magnetic receiver 11, and the induced magnet 12 is electrically connected with Hall sensor,
Contactless angular transducer is formed, cam path 41, the cam are further opened with the position on lower side of the sector gear 4
Camshaft bearing 13 is provided with groove 41, the camshaft bearing 13 is connected with camshaft bearing axle 14 and camshaft bearing support 15, described
The upper end of valve rod 16 is connected with the camshaft bearing support 15, and lower end is connected with valve block 18, sets guaranteed on the valve block 18
Close valve pocket 19 is sealed, the middle part of the valve rod 16 is additionally provided with linear bearing part 17, and the linear bearing part 17 is consolidated
It is scheduled in housing 20, the center of linear bearing part 17 offers the installation through-hole 178 for placing valve rod 16, the installation
The two ends of through hole 178 offer in upper and lower mounting groove 176,177, the upper mounting groove 176 and are from up to down disposed with pad
Piece 171 and upper O-ring 172, lower O-ring 173, internal gasket 174 and outer are from up to down disposed with the lower mounting groove 177
Pad 175, the outer pad 175 is fixed in lower mounting groove 177 by rivet, and by internal gasket 174 and the lower envelope of O-ring 173
In lower mounting groove 177, the internal gasket 174 and the gap of valve rod 16 coordinate, the valve rod 16 be located at upper and lower O-ring 172,
Coordinate on 173 position and offer circlip groove 161, the upper and lower O-ring 172,173 coordinates with circlip groove, can be by valve rod
16 shifting amount is controlled in a scope for very little, improves the positional precision of EGR valve, it is ensured that EGR valve is well run, and valve rod
16 when moving up and down, and the internal gasket 174 coordinated with the gap of valve rod 16 can remove most of soot particles on valve rod 16.
When the EGR valve is used, induced magnet 12 is electrically connected with the control system of automobile, realizes that contactless angle is surveyed
Amount, when air air inflow in needing to increase into engine, motor 1 obtains electric rotation, and sector is driven by idler gear 3
Gear 4 is rotated, and the motion in cam path 41 of camshaft bearing 13 is driven in the rotary course of sector gear 4, is moved down on band ovable valve stem 16
It is dynamic, realize that valve block 18 is switched, coordinate Hall sensor to can detect that opening for valve block 18 by the induced magnet 12 in drive shaft 7
Degree, feeds back to control system, such that it is able to realize the precise control of air inflow, if air inflow mistake by angular transducer testing result
Greatly, the aperture of valve block 18 can be reduced by controlling motor 1, reduces air inflow, if air inflow is too small, can be by controlling to drive
Dynamic motor 1 increases the aperture of valve block 18, increases air inflow, has fully ensured that the precise control of air input of engine by air, the sector
The torsion spring 6 connected on the torsion spring seat 5 of integrally connected on gear 4 provides the resistance torque of motor 1, and can realize sector gear 4
The band return of moving valve plate 18.
Below only with embodiment, the present invention is described, but the present invention is not limited to above-mentioned size and outward appearance illustration,
Any limitation of the invention should less be constituted.As long as any improvement done to the present invention or modification belong to right of the present invention
It is required that within the protection domain advocated.
Claims (5)
1. a kind of electric EGR valve, including housing, motor, valve rod and valve block, it is characterised in that：The motor is set
In housing, motor is connected with idler gear, and the idler gear is engaged with sector gear, and the sector gear integrally connects
Torsion spring seat is connected to, return torsion spring is connected with the torsion spring seat, the other end of return torsion spring is fixed on housing, the sector
Wheel is fixed, and the drive shaft is spindle rotationally arranged in housing by rolling bearing and sliding bearing on the driving shaft, and is driven
Induced magnet is additionally provided with axle, the induced magnet is electrically connected with Hall sensor, and cam path is further opened with sector gear, institute
State and camshaft bearing is provided with cam path, the camshaft bearing is connected with camshaft bearing axle and camshaft bearing support, the valve rod
Upper end be connected with the camshaft bearing support, lower end is connected with valve block, and linear bearing part, institute are also arranged with the valve rod
State linear bearing part to be fixed in housing, the linear bearing part center offers the installation through-hole for installing valve rod,
The upper and lower both sides of installation through-hole offer in upper and lower mounting groove, the upper mounting groove and are from up to down disposed with pad and upper O
Lower O-ring, internal gasket and outer pad are from up to down disposed with type circle, the lower mounting groove, the outer pad passes through riveting
Nail is fixed in lower mounting groove, and internal gasket and lower O-ring are encapsulated in lower mounting groove, and the internal gasket is matched somebody with somebody with valve lever clearance
Close, the valve rod is located to coordinate on the position of upper and lower O-ring and offers circlip groove.
2. electric EGR valve according to claim 1, it is characterised in that：The rolling bearing is arranged on torsion spring seat and driving
Between axle, the sliding bearing is arranged on drive shaft away from one end of sector gear.
3. electric EGR valve according to claim 1, it is characterised in that：The induced magnet is fixed on drive by magnetic receiver
On one end near sector gear of moving axis.
4. electric EGR valve according to claim 1, it is characterised in that：Ripple is provided between the motor and housing
Shape spring.
5. electric EGR valve according to claim 1, it is characterised in that：Valve pocket is provided with the valve block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510127585.8A CN104727989B (en) | 2015-03-23 | 2015-03-23 | A kind of electric EGR valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510127585.8A CN104727989B (en) | 2015-03-23 | 2015-03-23 | A kind of electric EGR valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104727989A CN104727989A (en) | 2015-06-24 |
| CN104727989B true CN104727989B (en) | 2017-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510127585.8A Active CN104727989B (en) | 2015-03-23 | 2015-03-23 | A kind of electric EGR valve |
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| Country | Link |
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| CN (1) | CN104727989B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203319B (en) * | 2015-11-16 | 2018-01-05 | 无锡隆盛科技股份有限公司 | Electric EGR valve durability test apparatus |
| KR20180032708A (en) * | 2016-09-22 | 2018-04-02 | 주식회사 유니락 | Monitering system for valve with RF and Solra cell |
| CN108979906B (en) * | 2018-08-03 | 2020-11-20 | 潍柴动力股份有限公司 | EGR valve and engine |
| CN112065615B (en) * | 2020-09-18 | 2021-12-03 | 浙江银轮机械股份有限公司 | EGR valve |
| CN112377340B (en) * | 2021-01-18 | 2021-05-14 | 宁波协诺机电有限公司 | Electric actuator, turbocharging system and commercial vehicle |
| CN113738516A (en) * | 2021-09-09 | 2021-12-03 | 芜湖力锐德电子科技有限公司 | Electric actuator for control valve of automobile exhaust system |
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| CN101892912A (en) * | 2010-08-06 | 2010-11-24 | 南京奥联汽车电子电器有限公司 | Non-contact electronic throttle |
| CN102661216A (en) * | 2012-06-04 | 2012-09-12 | 南岳电控(衡阳)工业技术有限公司 | Valve used for diesel engine exhaust gas recirculation system |
| CN203627009U (en) * | 2013-12-13 | 2014-06-04 | 宜宾天瑞达汽车零部件有限公司 | Eccentric roller transmission type valve for exhaust gas recycle(EGR) |
| CN203867715U (en) * | 2014-06-04 | 2014-10-08 | 四川田奥环保科技有限公司 | Electronic throttle valve installed on engine intake manifold |
| CN204082389U (en) * | 2014-09-23 | 2015-01-07 | 潍坊力创电子科技有限公司 | Motor-driven EGR valve |
| CN204610075U (en) * | 2015-03-23 | 2015-09-02 | 凯龙高科技股份有限公司 | A kind of electric EGR valve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536721B (en) * | 2010-12-27 | 2016-04-20 | 王学武 | Reciprocating pneumatic water pump |
| CN104343993A (en) * | 2014-10-23 | 2015-02-11 | 赵继鹏 | Electric stop valve device formed by additionally mounted speed reduction motor and universal joint on plastic manual stop valve |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892912A (en) * | 2010-08-06 | 2010-11-24 | 南京奥联汽车电子电器有限公司 | Non-contact electronic throttle |
| CN102661216A (en) * | 2012-06-04 | 2012-09-12 | 南岳电控(衡阳)工业技术有限公司 | Valve used for diesel engine exhaust gas recirculation system |
| CN203627009U (en) * | 2013-12-13 | 2014-06-04 | 宜宾天瑞达汽车零部件有限公司 | Eccentric roller transmission type valve for exhaust gas recycle(EGR) |
| CN203867715U (en) * | 2014-06-04 | 2014-10-08 | 四川田奥环保科技有限公司 | Electronic throttle valve installed on engine intake manifold |
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| CN104727989A (en) | 2015-06-24 |
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Denomination of invention: An electric EGR valve Effective date of registration: 20210727 Granted publication date: 20170704 Pledgee: Agricultural Bank of China Limited by Share Ltd. Wuxi Xishan branch Pledgor: KAILONG HIGH TECHNOLOGY Co.,Ltd. Registration number: Y2021320010276 |
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