CN102661216A - 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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- CN102661216A CN102661216A CN2012101816450A CN201210181645A CN102661216A CN 102661216 A CN102661216 A CN 102661216A CN 2012101816450 A CN2012101816450 A CN 2012101816450A CN 201210181645 A CN201210181645 A CN 201210181645A CN 102661216 A CN102661216 A CN 102661216A
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- valve
- eccentric cam
- cam plate
- torque motor
- valve rod
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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
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 and administer technical field, the employed valve of particularly a kind of diesel engine exhaust recirculating system (EGR).
Background technique
For reducing harmful exhaust content; Especially nitrogen oxide (NOx) for many years, has adopted so-called egr system in the internal-combustion engine of many patterns; These systems allow a part of exhaust gas recirculation in the gas handling system of motor; Mix with input air and be transported in the firing chamber of motor again at it, the waste gas that is recycled substitutes the input air of a part, thereby has and reduce the effect that NOx forms.The existing valve that is used for egr system generally comprises and is arranged in the EGR recirculation cavity and the independent air door in the air-inlet cavity, for these air doors are provided with independent drive motor, thereby makes control valve unit become complicated, equally also makes control gear become complicated.
Summary of the invention
Technical problem to be solved by this invention is that providing a kind of to the valve arrangement complicacy in the existing gas recirculation system (EGR) is applied in the gas recirculation system (EGR), can make the rate regulation relation of air/EGR gas become more reliable and simple valve.
The technical solution adopted for the present invention to solve the technical problems is:
The employed valve of a kind of diesel engine exhaust recirculating system; Comprise valve seat, be installed in valve body and torque motor on the valve seat; First side at said valve body is provided with waste gas inlet; Second side relative with first side of valve body is provided with the air outlet, is provided with a valve pocket in the said valve body, and said torque motor is fixed on the valve seat; It is characterized in that; Comprise that also one is installed on the said torque motor output shaft and the eccentric cam plate that is rotated by the torque motor driving; Be installed in the valve rod in the said valve body with one through axle sleeve, and be enclosed within on the said torque motor output shaft and the torsion spring that an end is connected with the torque motor output shaft, the other end is connected with the eccentric cam plate; The spin axis of the axis of this valve rod and said eccentric cam plate is perpendicular; The upper pole part of said valve rod extends in the valve pocket, and in the end of this upper pole part one valve piece is installed, and said valve piece is divided into upper and lower valve pocket with said valve pocket, and wherein said waste gas inlet connects with said suction port respectively through said upper and lower valve pocket; The lower beam portion of said valve rod extends to the eccentric cam plate and is connected with the eccentric cam plate, and rotatablely moving of this eccentric cam plate drives said valve rod moving linearly.
The present invention offers a driving cam type groove on said eccentric cam plate, in this driving cam type groove, a roller is installed, and said roller is connected with the lower beam portion of said valve rod through roller shaft.
For avoiding the carbon deposit in the waste gas that the straight line motion of valve rod is caused clamping stagnation; The filter screen of one Stainless Steel Wire coiling is installed through a stainless steel casing in the upper end of said axle sleeve; But the carbon deposit particle in this filter screen filtering exhaust, the upper pole part of said valve rod passes this filter screen and stainless steel casing.
For preventing that waste gas from entering into eccentric cam plate working area through filter screen and axle sleeve,, between axle sleeve lower end and valve seat, increase by an outside framework oil seal to producing corrosion between the lobe plate work nest.
Working principle of the present invention is: waste gas circulation control unit (ECU) sends control signal to torque motor, torque motor work through load and rotating speed under each operating mode of the motor that collects; Drive the rotation of eccentric cam plate through torsion spring; And the eccentric cam plate drives valve rod and moves upward, and valve rod pushes away movable valve block and moves upward and open, and at this moment waste gas inlet is communicated with the air outlet respectively through upper and lower valve pocket; Part waste gas and air mixing are participated in recirculation like this.When torque motor quit work, torsion spring drove the eccentric cam board reversal and gets back to original position, and the eccentric cam plate drives valve rod again and moves downward, and valve rod band movable valve block moves downward and closes, and waste gas is not participated in recirculation.
The present invention regulates the corner of torque motor through waste gas circulation control unit (ECU), thereby controls the opening value of EGR valve, finally controls the waste gas circulation amount, i.e. the ratio of air/EGR gas.Torque motor will feed back to ECU with the opening value of the valve piece that corner embodied; Supply ECU when load and rotation speed change, to make judgement; Constantly the controlling opening of valve value to satisfy the requirement of discharging and the various operating modes of motor, finally realizes reducing NOx (nitrogen oxide) emissions object.
Valve arrangement of the present invention is simple, only needs a motor can realize the adjusting of the ratio of air/EGR gas.The present invention does not do at motor under the situation of big change, realizes that the existing electronic controlled diesel emission level that adopts is upgraded to Europe 4 by Europe 3; Product power wide coverage is fit to use and marine diesel engine and generator set to heavy goods vehicles usefulness, locomotive from light-duty.
Description of drawings
Fig. 1 is the plan view of the employed valve of diesel engine exhaust recirculating system of the present invention (EGR).
Fig. 2 is the left view of the employed valve of diesel engine exhaust recirculating 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
For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with concrete diagram, further set forth mode of execution of the present invention.
Referring to Fig. 1 to Fig. 4, the employed valve of a kind of diesel engine exhaust recirculating system shown in the figure comprises valve seat 100, valve body 200, torque motor 300, eccentric cam plate 400, valve rod 500, valve piece 600.
Torque motor 300 is installed in first side 110 of valve seat 100 through fastening piece, and its output shaft extends to valve seat 100 second side 120 relative with first side 110, and eccentric cam plate 400 is installed on the output shaft of torque motor 300.On the output shaft of torque motor 300, be with a torsion spring 700, torsion spring 700 1 ends are connected with the output shaft of torque motor 300, the other end is connected with eccentric cam plate 400.For dustproof, a shell 130 is installed in second side 120 of valve seat 100.
Valve body 200 is installed on the valve seat 100 through fastening piece, is provided with waste gas inlet 230 in first side 210 of valve body 200, is provided with air outlet 250 in first side, the 210 second relative sides 240 with valve body 200, is provided with valve pocket 260 in the valve body 200.
Valve rod 500 is installed in the valve body 200 through an axle sleeve 510; For avoiding the carbon deposit in the waste gas that the straight line motion of valve rod 500 is caused clamping stagnation; The filter screen 530 of one Stainless Steel Wire coiling is installed through a stainless steel casing 520 in the upper end of axle sleeve 510, but the carbon deposit particle in these filter screen 530 filtering exhausts.The upper pole part of valve rod 500 extends in the valve pocket 260 after passing this filter screen 530 and stainless steel casing 520.End at the upper pole part of valve rod 500 is equipped with a valve piece 600, and valve piece 600 is divided into upper and lower valve pocket 261,262 with valve pocket 260, and waste gas inlet 230 connects with air outlet 250 through uuper valve chamber 261, lower valve chamber 262 respectively.
The spin axis of the axis of valve rod 500 and eccentric cam plate 400 is perpendicular, and the lower beam portion of valve rod 500 extends to eccentric cam plate 400.On eccentric cam plate 400, offer a driving cam type groove 410, in this driving cam type groove 410, a roller 540 is installed, roller 540 is connected with the lower beam portion of valve rod 500 through roller shaft 541.Actuate valve stem 500 moving linearlies that rotatablely move of eccentric cam plate 400 like this.
For preventing that waste gas from entering into eccentric cam plate 400 working areas through filter screen 530 and axle sleeve 510,410 generations of the driving cam type groove corrosion to eccentric cam plate 400 increases by an outside framework oil seal 550 between axle sleeve 510 lower ends and valve seat 100.
The employed valve of diesel engine exhaust recirculating system of the present invention can directly insert in the engine exhaust pipe and fix.
Waste gas circulation control unit (ECU) (not shown) is through load and rotating speed under each operating mode of the motor that collects; Send control signal for torque motor 300; Torque motor 300 work drives 400 rotations of eccentric cam plates through torsion spring 700, and eccentric cam plate 400 drives valve rod 500 and moves upward; Valve rod 500 pushes away movable valve block 600 and moves upward and open; At this moment waste gas inlet 230 is communicated with air outlet 250 through uuper valve chamber 261, lower valve chamber 262, and part waste gas enters the firing chamber through air outlet 250 entering outlet pipes and air mixing like this, participates in recirculation.When torque motor 300 quit work, torsion spring 700 drove 400 counter-rotatings of eccentric cam plate and gets back to original position, and eccentric cam plate 400 drives valve rod 500 again and moves downward, and valve rod 500 band movable valve blocks 600 move downward and close, and waste gas is not participated in recirculation.
When motor surpasses certain rotating speed, loads and reaches certain temperature; ECU controls valve of the present invention and is in suitable opening value; The exhausted air quantity that makes recirculation is according to the difference of engine speed, load, temperature and EGT and difference is minimum with the NOX that reaches in the waste gas.
More than show and described 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; That describes in the foregoing description and the specification just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (4)
1. employed valve of diesel engine exhaust recirculating system; Comprise valve seat, be installed in valve body and torque motor on the valve seat; First side at said valve body is provided with waste gas inlet; Second side relative with first side of valve body is provided with the air outlet, is provided with a valve pocket in the said valve body, and said torque motor is fixed on the valve seat; It is characterized in that; Comprise that also one is installed on the said torque motor output shaft and the eccentric cam plate that is rotated by the torque motor driving; Be installed in the valve rod in the said valve body with one through axle sleeve, and be enclosed within on the said torque motor output shaft and the torsion spring that an end is connected with the torque motor output shaft, the other end is connected with the eccentric cam plate; The spin axis of the axis of this valve rod and said eccentric cam plate is perpendicular; The upper pole part of said valve rod extends in the valve pocket, and in the end of this upper pole part one valve piece is installed, and said valve piece is divided into upper and lower valve pocket with said valve pocket, and wherein said waste gas inlet connects with said suction port respectively through said upper and lower valve pocket; The lower beam portion of said valve rod extends to the eccentric cam plate and is connected with the eccentric cam plate, and rotatablely moving of this eccentric cam plate drives said valve rod moving linearly.
2. the employed valve of a kind of diesel engine exhaust recirculating system as claimed in claim 1; It is characterized in that; On said eccentric cam plate, offer a driving cam type groove; In this driving cam type groove, a roller is installed, said roller is connected with the lower beam portion of said valve rod through roller shaft.
3. the employed valve of a kind of diesel engine exhaust recirculating system as claimed in claim 1; It is characterized in that; The filter screen of one Stainless Steel Wire coiling is installed through a stainless steel casing in the upper end of said axle sleeve, and the upper pole part of said valve rod passes this filter screen and stainless steel casing.
4. the employed valve of a kind of diesel engine exhaust recirculating system as claimed in claim 1 is characterized in that, between axle sleeve lower end and valve seat, increases by an outside framework oil seal.
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 |
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| CN102661216A true CN102661216A (en) | 2012-09-12 |
| CN102661216B 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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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103334853A (en) * | 2013-06-03 | 2013-10-02 | 第一拖拉机股份有限公司 | Embedded combined electric 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 |
| CN104727989A (en) * | 2015-03-23 | 2015-06-24 | 凯龙高科技股份有限公司 | Electric EGR valve |
| CN105102784A (en) * | 2013-03-15 | 2015-11-25 | 博格华纳公司 | Compact rotary wastegate 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 |
| CN109458280A (en) * | 2019-01-03 | 2019-03-12 | 无锡隆盛科技股份有限公司 | Torque motor promotes EGR valve |
| CN110131459A (en) * | 2018-02-09 | 2019-08-16 | 上海三久机械有限公司 | Air door driver |
| 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 |
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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 |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105102784A (en) * | 2013-03-15 | 2015-11-25 | 博格华纳公司 | Compact rotary wastegate valve |
| CN105102784B (en) * | 2013-03-15 | 2017-09-12 | 博格华纳公司 | Compact rotary waste gate 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 |
| CN104727989A (en) * | 2015-03-23 | 2015-06-24 | 凯龙高科技股份有限公司 | Electric EGR 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 |
| CN110131459A (en) * | 2018-02-09 | 2019-08-16 | 上海三久机械有限公司 | Air door driver |
| CN109458280A (en) * | 2019-01-03 | 2019-03-12 | 无锡隆盛科技股份有限公司 | Torque motor promotes 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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|---|---|
| CN102661216B (en) | 2015-06-03 |
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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. |