CN104775944A - Electric EGR (exhaust gas recirculation) valve - Google Patents
Electric EGR (exhaust gas recirculation) valve Download PDFInfo
- Publication number
- CN104775944A CN104775944A CN201510199738.XA CN201510199738A CN104775944A CN 104775944 A CN104775944 A CN 104775944A CN 201510199738 A CN201510199738 A CN 201510199738A CN 104775944 A CN104775944 A CN 104775944A
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- Prior art keywords
- gear
- valve
- sensor
- motor
- eccentric wheel
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- 230000007704 transition Effects 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 239000004744 fabric Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract 3
- 239000007789 gas Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000003134 recirculating effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- 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 invention discloses an electric EGR (exhaust gas recirculation) valve. The electric EGR valve comprises a valve body, a sensor and a direct-current motor, wherein the sensor is arranged on the top end of the valve body, and the direct-current motor is fixedly installed on the sensor; an output shaft of the direct-current motor is connected to the top end of a valve rod which is arranged in the valve body by virtue of a gear transmission mechanism; the gear transmission mechanism comprises a motor gear, a driven gear set, a transitional gear, an eccentric wheel and a slide block, the driven gear set comprises three driven gears, and each driven gear comprises a large gear and a small gear; the motor gear is coaxially arranged on a motor output shaft, the motor gear is engaged with three large gears of the driven gear set, and three small gears are respectively engaged with the transitional gear; the eccentric wheel is fixedly arranged on the outer end of a short shaft of the transitional gear, and the slide block is connected with the eccentric wheel by virtue of a shaft. By adopting the direct-current motor, the valve rod and a valve core of the EGR valve are driven to move by virtue of the gear transmission mechanism, so that the control precision for arbitrary openness of the EGR valve is high, and the response time is shorter.
Description
Technical field
The present invention relates to engine exhaust emission recirculating system technical field, particularly a kind of motor car engine EGR valve.
Background technique
In engine exhaust-gas recirculating system (egr system), EGR valve is mainly used in the flow of regulable control EGR gas, electric EGR valve is by the aperture size of inner DC MOTOR CONTROL suction port, pneumatic EGR valve then controls degree of vacuum size by vacuum governor, thus the aperture size of indirect control EGR is to regulate exhaust gas flow, return cylinder after waste gas is mixed by a certain percentage with fresh air and carry out recirculation, burn temperature and velocity of combustion to reduce cylinder combustion, reduce NO further
xdischarge amount.Along with being the more and more stricter of its emission control requirement to Motor Vehicle, control accuracy and the response time requirement of electric EGR valve are also more and more higher; But the current most control accuracy of pneumatic EGR valve is lower, cannot meet usage requirement.
Summary of the invention
The technical issues that need to address of the present invention are to provide the electric EGR valve that a kind of control accuracy is higher, the response time is fast.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows.
Electric EGR valve, comprises valve body, sensor and direct current generator, and sensor setting is on the top of valve body, and direct current generator fixed installation on a sensor; The output shaft of described direct current generator connects through gear drive the valve stem tip be arranged in valve body; Described gear drive comprises motor gear, passive tooth wheels, transition gear, eccentric wheel and is arranged on the slide block of valve stem tip, described passive tooth wheels comprise even cloth three driven gears on a sensor, and driven gear comprises gearwheel and the small gear of coaxial setting; Described motor gear is coaxially arranged on motor output shaft, and motor gear is meshed with three gearwheels of passive tooth wheels, and three small gears of passive tooth wheels are meshed with transition gear respectively; Eccentric wheel is fixedly installed on the minor axis outer end of transition gear.
Above-mentioned electric EGR valve, described eccentric axis is provided with bearing pin, and bearing pin top is provided with bearing, and bearing is inlaid in slide block.
Above-mentioned electric EGR valve, described transition gear is provided with magnet steel, and chip and the magnet steel of sensor are oppositely arranged.
Owing to have employed above technological scheme, the invention technological progress is as follows.
The present invention adopts DC motor Driver, is slowed down by gear drive, and direct current generator drives valve rod and the spool action of EGR valve by gear drive, realizes the control to EGR valve any opening degree; Relative to gas-powered formula EGR valve, control accuracy is high, and the response time is faster.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the connection diagram of transition gear of the present invention, eccentric wheel and bearing;
Fig. 3 is the position view of sensor chip of the present invention and magnet steel;
Wherein: the gearwheel of 1-valve body, 2-sensor, 3-direct current generator, 4-motor gear, 5-driven gear, 6-driven gear, the small gear of 7-driven gear, 8-transition gear, 9-minor axis, 10-eccentric wheel, 11-bearing pin, 12-bearing, 13-spool, 14-valve rod, 15-slide block, 16-chip, 17-magnet steel.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further elaborated.
Electric EGR valve, its structure as shown in Figure 1.Comprise valve body 1, sensor 2 and direct current generator 3, sensor 2 is arranged on the top of valve body 1, and direct current generator 3 is fixedly mounted on sensor 2.
Be provided with valve rod 14 in valve body 1, the bottom of valve rod is provided with the spool 13 be equipped with mutually with valve body suction port.The output shaft of direct current generator 3 connects the top arranging valve rod 14 through gear drive.
The structure of gear drive as depicted in figs. 1 and 2, comprises motor gear 4, passive tooth wheels, transition gear 8, eccentric wheel 10 and is arranged on the slide block 15 of valve stem tip; Wherein passive tooth wheels comprise three driven gears 5 of even cloth on sensor 2, and driven gear 5 comprises gearwheel 6 and the small gear 7 of coaxial setting.Motor gear 4 is coaxially arranged on motor output shaft, and motor gear 4 is meshed with three gearwheels 6 of passive tooth wheels, and three small gears 7 of passive tooth wheels are meshed with transition gear 8 respectively; Eccentric wheel 10 is fixedly installed on minor axis 9 outer end of transition gear 8; The axis of eccentric wheel 10 is provided with bearing pin 11, and bearing pin 11 top is provided with bearing 12, and bearing 12 is inlaid in slide block 15.
During electric EGR valve work, be energized to direct current generator 3, motor gear 4 rotates with motor output shaft, motor gear 4 engages with the gearwheel 6 of three driven gears, three driven gears 5 are driven to rotate, the small gear 7 of three driven gears is meshed with transition gear 8, thus drive the eccentric wheel 10 on minor axis 9 and minor axis to rotate, the bearing 12 be connected by bearing pin with eccentric wheel is slided in slide block 15, the sliding zone ovable valve stem 14 of bearing 12 in slide block 15 and spool 13 move up and down, and namely realize the opening and closing function of electric EGR valve.The velocity ratio of middle gear driving mechanism of the present invention is fixing, and the supply current controlling direct current generator accurately can control the aperture of electric EGR valve.
Transition gear 8 is provided with magnet steel 17, chip 16 and the magnet steel 17 of sensor 2 are oppositely arranged, and namely chip is positioned at directly over magnet steel, as shown in Figure 3.Sensor 2 reads the position signal of the magnet steel 17 on transition gear 8 by the chip 16 of sensor 2, namely can read the aperture of spool 13.By the position signal that sensor 2 reads, the accurate control that electric EGR valve opens and closes can be realized.
Claims (3)
1. electric EGR valve, is characterized in that: comprise valve body (1), sensor (2) and direct current generator (3), sensor (2) is arranged on the top of valve body (1), and direct current generator (3) is fixedly mounted on sensor (2); The output shaft of described direct current generator (3) connects through gear drive valve rod (14) top be arranged in valve body (1); Described gear drive comprises motor gear (4), passive tooth wheels, transition gear (8), eccentric wheel (10) and is arranged on the slide block (15) of valve stem tip, described passive tooth wheels comprise three driven gears (5) of even cloth on sensor (2), and driven gear (5) comprises gearwheel (6) and the small gear (7) of coaxial setting; Described motor gear (4) is coaxially arranged on motor output shaft, and motor gear (4) is meshed with three gearwheels (6) of passive tooth wheels, and three small gears (7) of passive tooth wheels are meshed with transition gear (8) respectively; Eccentric wheel (10) is fixedly installed on minor axis (9) outer end of transition gear (8).
2. electric EGR valve according to claim 1, is characterized in that: the axis of described eccentric wheel (10) is provided with bearing pin (11), and bearing pin (11) top is provided with bearing (12), and bearing (12) is inlaid in slide block (15).
3. electric EGR valve according to claim 1, is characterized in that: described transition gear (8) is provided with magnet steel (17), and chip (16) and the magnet steel (17) of sensor (2) are oppositely arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510199738.XA CN104775944A (en) | 2015-04-25 | 2015-04-25 | Electric EGR (exhaust gas recirculation) valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510199738.XA CN104775944A (en) | 2015-04-25 | 2015-04-25 | Electric EGR (exhaust gas recirculation) valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104775944A true CN104775944A (en) | 2015-07-15 |
Family
ID=53617642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510199738.XA Pending CN104775944A (en) | 2015-04-25 | 2015-04-25 | Electric EGR (exhaust gas recirculation) valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104775944A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438118A (en) * | 2016-10-14 | 2017-02-22 | 李明喜 | Recirculation control device for engine exhaust gas |
| CN106481485A (en) * | 2016-12-28 | 2017-03-08 | 无锡隆盛科技股份有限公司 | The intelligent EGR valve of compact conformation |
| CN106708106A (en) * | 2016-12-28 | 2017-05-24 | 钦州华成自控设备有限公司 | Sugar refinery sulphur fumigation intensity on-line automatic measurement and control system |
| CN106762250A (en) * | 2015-11-23 | 2017-05-31 | 宁波思明汽车科技股份有限公司 | Diesel engine egr valve |
| CN110220001A (en) * | 2019-06-04 | 2019-09-10 | 上海新力动力设备研究所 | A kind of driving device for solid rail control engine gas regulating valve |
| CN110259610A (en) * | 2019-06-29 | 2019-09-20 | 无锡同益汽车动力技术有限公司 | An electric EGR valve and its assembly method |
| CN110645122A (en) * | 2019-10-08 | 2020-01-03 | 无锡同益汽车动力技术有限公司 | EGR valve eccentric wheel improves structure |
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| KR20020015825A (en) * | 2000-08-23 | 2002-03-02 | 이계안 | An automotive variable valve timing device using planetary gear system |
| CN102080611A (en) * | 2011-03-08 | 2011-06-01 | 无锡隆盛科技有限公司 | Dual exhaust electric EGR (Exhaust Gas Recirculation) valve |
| CN202228216U (en) * | 2011-08-02 | 2012-05-23 | 宜宾天瑞达汽车零部件有限公司 | Direct current motor EGR (exhaust gas recirculation) valve |
| CN202578950U (en) * | 2012-03-16 | 2012-12-05 | 联创汽车电子有限公司 | Electric controlled EGR (Exhaust Gas Recirculation) valve driven by two stages of gears |
| CN202970959U (en) * | 2012-12-14 | 2013-06-05 | 宜宾天瑞达汽车零部件有限公司 | Rotary type exhaust gas recirculation (EGR) valve |
| CN104234878A (en) * | 2014-09-23 | 2014-12-24 | 潍坊力创电子科技有限公司 | EGR (Exhaust Gas Recirculation) valve driven by motor |
| CN104454177A (en) * | 2014-12-15 | 2015-03-25 | 无锡隆盛科技股份有限公司 | Throttle valve driven by direct-current motor |
| CN104455678A (en) * | 2014-11-28 | 2015-03-25 | 长城汽车股份有限公司 | Egr valve driving mechanism |
| CN204572263U (en) * | 2015-04-25 | 2015-08-19 | 无锡隆盛科技股份有限公司 | Electric EGR valve |
-
2015
- 2015-04-25 CN CN201510199738.XA patent/CN104775944A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020015825A (en) * | 2000-08-23 | 2002-03-02 | 이계안 | An automotive variable valve timing device using planetary gear system |
| CN102080611A (en) * | 2011-03-08 | 2011-06-01 | 无锡隆盛科技有限公司 | Dual exhaust electric EGR (Exhaust Gas Recirculation) valve |
| CN202228216U (en) * | 2011-08-02 | 2012-05-23 | 宜宾天瑞达汽车零部件有限公司 | Direct current motor EGR (exhaust gas recirculation) valve |
| CN202578950U (en) * | 2012-03-16 | 2012-12-05 | 联创汽车电子有限公司 | Electric controlled EGR (Exhaust Gas Recirculation) valve driven by two stages of gears |
| CN202970959U (en) * | 2012-12-14 | 2013-06-05 | 宜宾天瑞达汽车零部件有限公司 | Rotary type exhaust gas recirculation (EGR) valve |
| CN104234878A (en) * | 2014-09-23 | 2014-12-24 | 潍坊力创电子科技有限公司 | EGR (Exhaust Gas Recirculation) valve driven by motor |
| CN104455678A (en) * | 2014-11-28 | 2015-03-25 | 长城汽车股份有限公司 | Egr valve driving mechanism |
| CN104454177A (en) * | 2014-12-15 | 2015-03-25 | 无锡隆盛科技股份有限公司 | Throttle valve driven by direct-current motor |
| CN204572263U (en) * | 2015-04-25 | 2015-08-19 | 无锡隆盛科技股份有限公司 | Electric EGR valve |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762250A (en) * | 2015-11-23 | 2017-05-31 | 宁波思明汽车科技股份有限公司 | Diesel engine egr valve |
| CN106438118A (en) * | 2016-10-14 | 2017-02-22 | 李明喜 | Recirculation control device for engine exhaust gas |
| CN106481485A (en) * | 2016-12-28 | 2017-03-08 | 无锡隆盛科技股份有限公司 | The intelligent EGR valve of compact conformation |
| CN106708106A (en) * | 2016-12-28 | 2017-05-24 | 钦州华成自控设备有限公司 | Sugar refinery sulphur fumigation intensity on-line automatic measurement and control system |
| CN110220001A (en) * | 2019-06-04 | 2019-09-10 | 上海新力动力设备研究所 | A kind of driving device for solid rail control engine gas regulating valve |
| CN110259610A (en) * | 2019-06-29 | 2019-09-20 | 无锡同益汽车动力技术有限公司 | An electric EGR valve and its assembly method |
| CN110645122A (en) * | 2019-10-08 | 2020-01-03 | 无锡同益汽车动力技术有限公司 | EGR valve eccentric wheel improves structure |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150715 |