CN102661216B - Valve used for diesel engine exhaust gas recirculation system - Google Patents
Valve used for diesel engine exhaust gas recirculation system Download PDFInfo
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- CN102661216B CN102661216B CN201210181645.0A CN201210181645A CN102661216B CN 102661216 B CN102661216 B CN 102661216B CN 201210181645 A CN201210181645 A CN 201210181645A CN 102661216 B CN102661216 B CN 102661216B
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- valve
- eccentric cam
- cam plate
- torque motor
- exhaust gas
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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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Abstract
The invention discloses a valve used for a diesel engine exhaust gas recirculation system, which comprises a valve seat, and a valve body and a torque motor that are arranged on the valve seat; the valve body is provided with an exhaust gas inlet and an exhaust gas outlet; the valve body is internally provided with a valve cavity; the torque motor is fixed on the valve seat; the valve also comprises an eccentric cam plate, a valve rod and a torsion spring; the eccentric cam plate and the valve rod are arranged on an output shaft of the torque motor; the axis of the valve rod is vertical to the rotation axis of the eccentric cam plate; the upper rod part of the valve rod extends into the valve cavity, and a valve block is arranged at the end part of the upper rod part; the valve cavity is divided into an upper valve cavity and a lower valve cavity by the valve block, wherein the exhaust gas inlet is respectively communicated with the exhaust gas outlet by the upper valve cavity and the lower valve cavity; the lower rod part of the valve rod extends to the eccentric cam plate and is connected with the eccentric cam plate; and the valve rod is driven to do straight line motion by the rotating movement of the eccentric cam plate. The valve is simple in structure and can adjust the ratio between air and recycled exhaust gas only by one motor.
Description
Technical field
The present invention relates to diesel engine exhaust Treatment process field, particularly the valve that uses of a kind of diesel engine exhaust gas recirculation system (EGR).
Background technique
For reducing harmful exhaust content, especially nitrogen oxide (NOx), for many years, so-called egr system is have employed in the internal-combustion engine of many patterns, these systems allow a part of EGR in the gas handling system of motor, mix with input air at it and be transported in the firing chamber of motor again, the waste gas be recycled substitutes the input air of a part, thus has the effect reducing NOx and formed.Existingly generally comprise the independent air door be arranged in EGR recirculation cavity and in air-inlet cavity for the valve in egr system, for these air doors arrange independent drive motor, thus make control valve unit become complicated, equally also make control gear become complicated.
Summary of the invention
Technical problem to be solved by this invention is complicated for the valve arrangement in existing gas recirculation system (EGR) and provides one to be applied in gas recirculation system (EGR), and the rate regulation relation of air/EGR gas can be made to become more reliable and simple valve.
The technical solution adopted for the present invention to solve the technical problems is:
The valve that a kind of diesel engine exhaust gas recirculation system uses, comprise valve seat, be arranged on valve body on valve seat and torque motor, first side of described valve body is provided with waste gas inlet, second side relative with the first side of valve body is provided with air outlet, be provided with a valve pocket in described valve body, described torque motor is fixed on valve seat; It is characterized in that, also comprise one to be arranged on described torque motor output shaft and the eccentric cam plate being driven by torque motor and rotate, to be arranged on the valve rod in described valve body with one by axle sleeve, and to be enclosed within described torque motor output shaft and the torsion spring that one end is connected with torque motor output shaft, the other end is connected with eccentric cam plate; The axis of this valve rod and the spin axis of described eccentric cam plate perpendicular; The upper pole part of described valve rod extends in valve pocket, and is provided with a valve block in the end of this upper pole part, and described valve pocket is divided into upper and lower valve pocket by described valve block, and wherein said waste gas inlet is connected with described suction port respectively by described upper and lower valve pocket; The lower beam portion of described valve rod extends to eccentric cam plate and is connected with eccentric cam plate, and the rotary motion of this eccentric cam plate drives described valve rod moving linearly.
The present invention offers a driving cam type groove on described eccentric cam plate, and in this driving cam type groove, be provided with a roller, described roller is connected with the lower beam portion of described valve rod by roller shaft.
Clamping stagnation is caused for avoiding the straight line motion of the carbon deposit in waste gas to valve rod, the filter screen of one Stainless Steel Wire coiling is installed by a stainless steel casing in the upper end of described axle sleeve, this filter screen can carbon deposit particle in filtering exhaust, and the upper pole part of described valve rod is through this filter screen and stainless steel casing.
For preventing waste gas from entering into eccentric cam plate working area by filter screen and axle sleeve, producing corrosion between lobe plate work nest, between axle sleeve lower end and valve seat, increasing by an outside framework oil seal.
Working principle of the present invention is: waste gas circulation control unit (ECU) is by the load under each operating mode of motor of collecting and rotating speed, control signal is sent to torque motor, torque motor works, eccentric cam plate is driven to rotate by torsion spring, and eccentric cam plate is with ovable valve stem to move upward, valve rod pushes away movable valve block and moves upward and open, and at this moment waste gas inlet is communicated with air outlet respectively by upper and lower valve pocket, such portion mixes with air, participates in recirculation.When torque motor quits work, torsion spring drives eccentric cam board reversal to get back to original position, and eccentric cam plate is with again ovable valve stem to move downward, and valve rod band movable valve block moves downward and closes, and waste gas does not participate in recirculation.
The present invention regulates the corner of torque motor by waste gas circulation control unit (ECU), thus controls the opening value of EGR valve, final control waste gas circulation amount, the i.e. ratio of air/EGR gas.The opening value of the valve block that corner embodies by torque motor will feed back to ECU, judge when load and rotation speed change for ECU, constantly controlling opening of valve value, with the requirement of satisfied discharge and the various operating mode of motor, final realization reduces NOx(nitrogen oxide) emissions object.
Valve arrangement of the present invention is simple, only needs a motor can realize the adjustment of the ratio of air/EGR gas.The present invention, when large change do not done by motor, realizes existing employing electronic controlled diesel emission level and is upgraded to Europe 4 by Europe 3; Product Power coverage scope is wide, is applicable to from light-duty to heavy goods vehicles use, locomotive use and marine diesel engine and generator set.
Accompanying drawing explanation
Fig. 1 is the plan view of the valve that diesel engine exhaust gas recirculation system of the present invention (EGR) uses.
The left view of the valve that Fig. 2 uses for diesel engine exhaust gas recirculation system of the present invention (EGR).
Fig. 3 is the A-A sectional view of Fig. 1.
Fig. 4 is the B-B sectional view of Fig. 1.
Embodiment
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth embodiments of the present invention further.
See Fig. 1 to Fig. 4, the valve that a kind of diesel engine exhaust gas recirculation system shown in figure uses, comprises valve seat 100, valve body 200, torque motor 300, eccentric cam plate 400, valve rod 500, valve block 600.
Torque motor 300 is arranged on the first side 110 of valve seat 100 by fastening piece, and its output shaft extends to valve seat 100 second side 120 relative with the first side 110, and eccentric cam plate 400 is arranged on the output shaft of torque motor 300.On the output shaft of torque motor 300, cover has a torsion spring 700, and torsion spring 700 one end is connected with the output shaft of torque motor 300, the other end is connected with eccentric cam plate 400.In order to dust-proof, in the second side 120 of valve seat 100, a shell 130 is installed.
Valve body 200 is arranged on valve seat 100 by fastening piece, and the first side 210 of valve body 200 is provided with waste gas inlet 230, second side 240 relative with the first side 210 of valve body 200 is provided with air outlet 250, is provided with valve pocket 260 in valve body 200.
Valve rod 500 is arranged in valve body 200 by an axle sleeve 510, clamping stagnation is caused for avoiding the straight line motion of the carbon deposit in waste gas to valve rod 500, be provided with the filter screen 530 of a Stainless Steel Wire coiling by a stainless steel casing 520 in the upper end of axle sleeve 510, this filter screen 530 can carbon deposit particle in filtering exhaust.The upper pole part of valve rod 500 extends in valve pocket 260 through after this filter screen 530 and stainless steel casing 520.Be provided with a valve block 600 in the end of the upper pole part of valve rod 500, valve pocket 260 is divided into upper and lower valve pocket 261,262 by valve block 600, and waste gas inlet 230 connects with air outlet 250 respectively by uuper valve chamber 261, lower valve chamber 262.
The axis of valve rod 500 and the spin axis of eccentric cam plate 400 perpendicular, the lower beam portion of valve rod 500 extends to eccentric cam plate 400.Eccentric cam plate 400 offers a driving cam type groove 410, in this driving cam type groove 410, is provided with a roller 540, roller 540 is connected with the lower beam portion of valve rod 500 by roller shaft 541.Rotary motion actuate valve stem 500 moving linearly of such eccentric cam plate 400.
For preventing waste gas from entering into eccentric cam plate 400 working area by filter screen 530 and axle sleeve 510, producing corrosion between the driving cam type groove 410 of eccentric cam plate 400, between axle sleeve 510 lower end and valve seat 100, increasing by an outside framework oil seal 550.
The valve that diesel engine exhaust gas recirculation system of the present invention uses can directly insert in engine exhaust pipe also fixing.
Waste gas circulation control unit (ECU) (not shown) is by the load under each operating mode of motor of collecting and rotating speed, control signal is sent to torque motor 300, torque motor 300 works, eccentric cam plate 400 is driven to rotate by torsion spring 700, and eccentric cam plate 400 is with ovable valve stem 500 to move upward, valve rod 500 pushes away movable valve block 600 and moves upward and open, at this moment waste gas inlet 230 is by uuper valve chamber 261, lower valve chamber 262 is communicated with air outlet 250, such portion enters outlet pipe and mixes with air and enter firing chamber through air outlet 250, participate in recirculation.When torque motor 300 quits work, torsion spring 700 drives eccentric cam plate 400 to reverse and gets back to original position, and eccentric cam plate 400 is with again ovable valve stem 500 to move downward, and valve rod 500 is with movable valve block 600 move downward and close, and waste gas does not participate in recirculation.
When motor exceedes certain rotating speed, load and reaches certain temperature, ECU controls valve of the present invention and is in suitable opening value, make the exhausted air quantity of recirculation different according to the difference of engine speed, load, temperature and exhaust gas temperature, minimum with the NOX reached in waste gas.
More than show and describe basic principle of the present invention and major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (1)
1. the valve that uses of a diesel engine exhaust gas recirculation system, comprise valve seat, be arranged on valve body on valve seat and torque motor, first side of described valve body is provided with waste gas inlet, second side relative with the first side of valve body is provided with air outlet, be provided with a valve pocket in described valve body, described torque motor is fixed on valve seat; It is characterized in that, also comprise one and be enclosed within eccentric cam plate on described torque motor output shaft, to be arranged on the valve rod in described valve body with one by axle sleeve, and to be enclosed within described torque motor output shaft and the torsion spring that one end is connected with torque motor output shaft, the other end is connected with eccentric cam plate; The axis of this valve rod and the spin axis of described eccentric cam plate perpendicular; The upper pole part of described valve rod extends in valve pocket, and is provided with a valve block in the end of this upper pole part, and described valve pocket is divided into upper and lower valve pocket by described valve block, and wherein said waste gas inlet is connected with described air outlet respectively by described upper and lower valve pocket; The lower beam portion of described valve rod extends to eccentric cam plate and is connected with eccentric cam plate, described torque motor work, and drive eccentric cam plate to rotate by torsion spring, described torque motor quits work, and described torsion spring drives eccentric cam board reversal to get back to original position; The rotary motion of this eccentric cam plate drives described valve rod moving linearly;
Described eccentric cam plate offers a driving cam type groove, and in this driving cam type groove, be provided with a roller, described roller is connected with the lower beam portion of described valve rod by roller shaft;
Be provided with the filter screen of a Stainless Steel Wire coiling by a stainless steel casing in the upper end of described axle sleeve, the upper pole part of described valve rod is through this filter screen and stainless steel casing;
One outside framework oil seal is set between axle sleeve lower end and valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210181645.0A CN102661216B (en) | 2012-06-04 | 2012-06-04 | Valve used for diesel engine exhaust gas recirculation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210181645.0A CN102661216B (en) | 2012-06-04 | 2012-06-04 | Valve used for diesel engine exhaust gas recirculation system |
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| Publication Number | Publication Date |
|---|---|
| CN102661216A CN102661216A (en) | 2012-09-12 |
| CN102661216B true CN102661216B (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210181645.0A Active CN102661216B (en) | 2012-06-04 | 2012-06-04 | Valve used for diesel engine exhaust gas recirculation system |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112014000983T5 (en) * | 2013-03-15 | 2015-11-26 | Borgwarner Inc. | Compact rotating wastegate valve |
| CN103334853A (en) * | 2013-06-03 | 2013-10-02 | 第一拖拉机股份有限公司 | Embedded combined electric EGR valve |
| CN103277217A (en) * | 2013-06-08 | 2013-09-04 | 无锡隆盛科技股份有限公司 | Carbon removing mechanism of electric exhaust gas recirculation (EGR) valve |
| CN104481743A (en) * | 2014-09-24 | 2015-04-01 | 温州市日益机车部件有限公司 | Automobile torque motor type EGR (exhaust gas recirculation) valve |
| CN104727989B (en) * | 2015-03-23 | 2017-07-04 | 凯龙高科技股份有限公司 | A kind of electric EGR valve |
| CN107740736A (en) * | 2017-09-05 | 2018-02-27 | 温州市温纳汽车配件有限公司 | A kind of EGR valve |
| CN110131459B (en) * | 2018-02-09 | 2024-06-25 | 上海三久机械有限公司 | Damper driver |
| CN109458280B (en) * | 2019-01-03 | 2024-06-21 | 无锡隆盛科技股份有限公司 | Torque motor lifting EGR valve |
| CN113090422A (en) * | 2021-04-12 | 2021-07-09 | 渭南美联桥汽车新技术研究院有限公司 | High-temperature end valve assembly for exhaust gas recirculation |
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|---|---|---|---|---|
| EP1091112A2 (en) * | 1999-10-05 | 2001-04-11 | Pierburg Aktiengesellschaft | Valve, intake air conduit and exhaust gas recirculation unit for combustion engines |
| CN201747485U (en) * | 2010-08-17 | 2011-02-16 | 无锡隆盛科技有限公司 | Electric EGR valve |
| CN102094731A (en) * | 2011-03-08 | 2011-06-15 | 无锡隆盛科技有限公司 | Power-driven EGR (exhaust gas recirculation) valve |
| CN201908748U (en) * | 2011-01-04 | 2011-07-27 | 中国第一汽车集团公司无锡油泵油嘴研究所 | Exhaust gas recirculation valve |
| CN202012416U (en) * | 2011-03-08 | 2011-10-19 | 无锡隆盛科技有限公司 | Motor-driven exhaust gas recirculation (EGR) valve |
| CN202578955U (en) * | 2012-06-04 | 2012-12-05 | 南岳电控(衡阳)工业技术有限公司 | Valve used by waste gas recirculation system of diesel engine |
-
2012
- 2012-06-04 CN CN201210181645.0A patent/CN102661216B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1091112A2 (en) * | 1999-10-05 | 2001-04-11 | Pierburg Aktiengesellschaft | Valve, intake air conduit and exhaust gas recirculation unit for combustion engines |
| CN201747485U (en) * | 2010-08-17 | 2011-02-16 | 无锡隆盛科技有限公司 | Electric EGR valve |
| CN201908748U (en) * | 2011-01-04 | 2011-07-27 | 中国第一汽车集团公司无锡油泵油嘴研究所 | Exhaust gas recirculation valve |
| CN102094731A (en) * | 2011-03-08 | 2011-06-15 | 无锡隆盛科技有限公司 | Power-driven EGR (exhaust gas recirculation) valve |
| CN202012416U (en) * | 2011-03-08 | 2011-10-19 | 无锡隆盛科技有限公司 | Motor-driven exhaust gas recirculation (EGR) valve |
| CN202578955U (en) * | 2012-06-04 | 2012-12-05 | 南岳电控(衡阳)工业技术有限公司 | Valve used by waste gas recirculation system of diesel engine |
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| CN102661216A (en) | 2012-09-12 |
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Address after: 421007 Hunan province Hengyang City Baishazhou Yanfeng District No. 10 mailbox Patentee after: The electronic (Hengyang) industrial technology Limited by Share Ltd Address before: 421007 Hunan province Hengyang City Baishazhou Yanfeng District No. 10 mailbox Patentee before: Nanyue Electronic Control (Hengyang) Industry Technology Co., Ltd. |