CN102230430A - EGR (Exhaust Gas Recirculation) valve - Google Patents
EGR (Exhaust Gas Recirculation) valve Download PDFInfo
- Publication number
- CN102230430A CN102230430A CN2011101486916A CN201110148691A CN102230430A CN 102230430 A CN102230430 A CN 102230430A CN 2011101486916 A CN2011101486916 A CN 2011101486916A CN 201110148691 A CN201110148691 A CN 201110148691A CN 102230430 A CN102230430 A CN 102230430A
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- valve
- egr
- sealing
- valve block
- block
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- 238000007789 sealing Methods 0.000 claims abstract description 69
- 230000000694 effects Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 8
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 6
- 229910052731 fluorine Inorganic materials 0.000 claims description 6
- 239000011737 fluorine Substances 0.000 claims description 6
- 230000008676 import Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- 239000002912 waste gas Substances 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
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 provides an EGR (Exhaust Gas Recirculation) valve, belonging to the technical field of machines. The EGR valve solves the problem that the existing EGR valve of the double-valve structure can not satisfy the higher emission standard. The EGR valve comprises a valve body of which the inner part is a cavity, wherein the valve body is provided with an inlet and an outlet, and the inlet and the outlet are communicated with the inner cavity of the valve body; a valve rod partially connected with a power part is arranged in the valve body; the inner side of the valve body is provided with at least two extruded sealing sockets; the valve rod is provided with valve blocks which are of the same amount with the sealing sockets and correspond to the position with the sealing sockets along the axial direction of the valve rod; and a sealing structure is arranged between the valve blocks and the sealing sockets. The EGR valve is provided with a multi-valve structure composed of multiple valves and sealing sockets, so that the valve rod has high control precision to each valve, and thus the tightness of the EGR valve can be greatly improved.
Description
Technical field
The invention belongs to field of mechanical technique, relate to a kind of valve, particularly a kind of EGR valve.
Background technique
Exhaust gas recirculatioon is in engine working process, and part waste gas is introduced suction tude, mixes entering cylinder after platform gas mixes and burn with fresh air or atomizing.This method is to be used to reduce NOx at present, a kind of effective measure of discharge amount.But excessive waste gas will influence the normal operation of motor in circulation, and particularly when idling and the little load of low speed and motor were in cold operation, the waste gas of recirculation will obviously reduce the performance of motor.Therefore, people are provided with an EGR valve and regulate the exhausted air quantity that participates in exhaust gas recirculatioon according to the variation of engine operating condition condition automatically in exhaust gas recirculatioon.In order to satisfy the content that can either reduce automotive emissions, do not reduce the performance index of motor again, so require very accurate to the control of EGR valve.
The EGR valve of common dual-valve structure, it is at the encapsulation process of double valve, and common employing improves the machining accuracy of distance between the double valve, so the process equipment precision prescribed height that is adopted, and processing and installation are assembled wayward, and leakage rate is big.Therefore when producing in batches, the EGR valve of common double valve mechanism can not satisfy higher emission standard.
Summary of the invention
The objective of the invention is at existing technical problem, proposed the high EGR valve of a kind of sealing.
Purpose of the present invention can realize by following technical proposal: a kind of EGR valve, comprise that an inside is the valve body of cavity, have the import and the outlet that communicate with its inner chamber on the valve body, has the valve rod that links with power section in the valve body, it is characterized in that, described valve body inboard has the sealing seat of at least two protrusions, and it axially has described valve rod upper edge and the corresponding valve block of sealing seat quantity same position, and has sealing configuration between valve block and sealing seat.
Valve rod is driven by power section, and drive valve block on it and lean with corresponding sealing seat or separate, thus the closing or opening of control EGR valve.The cooperation of plural sealing seat and valve block forms multi-layer sealed to inner chamber, make the better tightness of whole EGR valve.Sealing configuration also makes valve block and sealing seat tightr when leaning.
In above-mentioned EGR valve, described one of them valve block and valve rod are connected, and other valve blocks are connected with valve handle activity and between is provided with spring, have the trend that is resisted against on the sealing seat at spring force effect lower valve.Valve rod further valve block and sealing seat apart from the time, under the spring force effect, can preferentially lean with sealing seat with the valve block of valve handle activity, form tentatively and seal.
In above-mentioned EGR valve, described valve block comprises valve block one and valve block two, and valve block one is connected on the valve rod, and valve rod is provided with location piece, above-mentioned valve block two is enclosed within on the valve rod and above-mentioned spring is positioned between the two, is resisted against on the location piece at the elastic force effect lower valve two of spring.Location piece props up valve block two, and does not make valve block two because the elastic force effect of spring continues to move to sealing seat.
In above-mentioned EGR valve, described valve block two comprises sleeve and is connected in the valve block two in the sleeve outside.Sleeve can move axially along valve rod, and valve block two is along with sleeve moves together.
In above-mentioned EGR valve, also have base on the described valve rod, above-mentioned sleeve is between base and location piece, and spring is between base and sleeve.Spring one end is against on the base, and the other end is against on the sleeve, and sleeve is against on the location piece under the effect of spring force.
In above-mentioned EGR valve, described sealing seat end has flexible sealing layer, and the sealing layer is corresponding with the valve block position.When valve block and sealing seat leant, sealing layer can be filled up sealing seat and valve block out-of-flatness place between the two, makes valve block contact closelyr with valve body, and sealing effect is better.
In above-mentioned EGR valve, described sealing seat end has the sealed department that annular is protruded, and above-mentioned sealing layer is covered in the sealed department outside.Sealed department and the easier comprehensive engagement of valve block that annular is protruded are divided into cavity in the annular and the cavity outside the annular with the cavity of valve body.
In above-mentioned EGR valve, described sealing layer is made by rubber material.The sealing layer of rubber material has especially excellent elasticity, and out-of-flatness place between the two when the valve block seat that can fill up protrusion contacts with valve block has effectively improved sealing; Rubber material also has ageing-resistant preferably, winter hardiness, heat resistance and wear resistance in addition.
In above-mentioned EGR valve, described sealing layer is made by the fluorine rubber material.Fluorine rubber not only has the advantage of General Purpose Rubber, also has powerful oxidation corrosion resistance, particularly ozone resistance, owing to contain NOx in the engine exhaust, so be fit to very much do the sealing layer of EGR valve.The fluorine rubber material also has the characteristic that high temperature resistant, oil resistant and the medicine of anti-the number of chemical corrode in addition, the EGR valve because high-temp waste gas will be flowed through, so EGR valve itself will can bear high temperature.
Compared with prior art, this EGR valve has many valve mechanisms of multiple tracks valve block and sealing seat composition, quality of fit height between each valve block and the sealing seat; In addition, also be coated with the sealing layer of fluorine rubber material on the sealing seat, improved the sealing of EGR valve greatly.
Description of drawings
Fig. 1 is the cross-sectional schematic of this EGR valve double valve when sealing.
Fig. 2 is the cross-sectional schematic of this EGR valve double valve when opening.
Fig. 3 is the cross-sectional schematic of the sealing seat of this EGR valve.
Among the figure, 1, valve body; 2, valve rod; 3, sealing seat; 3a, sealed department; 3b, sealing layer; 4, valve block one; 5, valve block two; 6, location piece; 7, sleeve; 8, spring; 9, base.
Embodiment
What as shown in Figure 1 and Figure 2, present embodiment adopted is the EGR valve of dual-valve structure.This EGR valve comprises the valve body 1 that an inside is cavity, have the import and the outlet that communicate with its inner chamber on the valve body 1, has the valve rod 2 that links with power section in the valve body 1, valve body 1 inboard has the sealing seat 3 of two protrusions, it axially has two valve blocks valve rod 2 upper edges, has sealing configuration between valve block and sealing seat 3.
Specifically, valve block comprises valve block 1 and valve block 25, and valve block 1 is connected on the valve rod 2.Valve rod 2 is provided with location piece 6, and the lower end of valve rod 2 is fixed with base 9, and sleeve 7 is between base 9 and location piece 6, and sleeve 7 can move axially along valve rod 2.Valve block 25 is connected in sleeve 7 outsides, moves with sleeve 7.Be provided with spring 8 between sleeve 7 and base 9, spring 8 one ends are against on the base 9, and the other end is against on the sleeve 7, and sleeve 7 is being against on the location piece 6 under the effect of spring 8 elastic force.
As shown in Figure 3, sealing configuration comprises sealed department 3a and sealing layer 3b, is provided with the sealed department 3a that annular is protruded in the end of sealing seat 3, and the sealing layer 3b that the fluorine rubber material is made is covered in the sealed department 3a outside.When valve block and sealing seat 3 leant, the sealed department 3a of protrusion contacted with valve block, and sealing layer 3b can fill up sealed department 3a when contacting with valve block between the two out-of-flatness place has effectively improved sealing.
As shown in Figure 2, double valve all is in open mode.When needs were closed the EGR valve, the valve rod 2 that links with power section was pulled upwardly, because the elastic force effect of spring 8, valve block 25 can lean by preferential valve block one 4 sealing seats 3 corresponding with it, realized tentatively sealing; When valve rod 2 continues to be pulled upwardly, valve block 25 is subjected to stopping of sealing seat 3, and the sleeve 7 that is connected with valve block 25 can move down and separates with location piece 6 along valve rod 2.And valve block 25 is because spring 8 by compression can be tightr against getting with sealing seat 3.Lean up to valve block one 4 its corresponding sealing seats 3, valve rod 2 moves on just can stopping.This moment, two valve blocks all leant with sealing seat 3, realized the double-layer seal to suction tude.
Claims (8)
1. EGR valve, comprise that an inside is the valve body of cavity (1), have import and the outlet that communicates with its inner chamber on the valve body (1), has the valve rod (2) that links with power section in the valve body (1), it is characterized in that, described valve body (1) inboard has the sealing seat (3) of at least two protrusions, and it axially has described valve rod (2) upper edge and the corresponding valve block of sealing seat (3) quantity same position, and has sealing configuration between valve block and sealing seat (3).
2. EGR valve according to claim 1, it is characterized in that, described valve block one of them and valve rod (2) are connected, and other valve blocks and valve rod (2) flexibly connect and between is provided with spring (8), have the trend that is resisted against on the sealing seat (3) at spring (8) elastic force effect lower valve.
3. EGR valve according to claim 2, it is characterized in that, described valve block comprises valve block one (4) and valve block two (5), valve block one (4) is connected on the valve rod (2), valve rod (2) is provided with location piece (6), above-mentioned valve block two (5) is enclosed within that valve rod (2) is gone up and above-mentioned spring (8) is positioned between the two, is resisted against on the location piece (6) at the elastic force effect lower valve two (5) of spring (8).
4. EGR valve according to claim 3 is characterized in that, described valve block two (5) comprises sleeve (7) and is connected in the valve block two (5) in sleeve (7) outside.
5. EGR valve according to claim 4 is characterized in that, also has base (9) on the described valve rod (2), and above-mentioned sleeve (7) is positioned between base (9) and the location piece (6), and spring (8) is positioned between base (9) and the sleeve (7).
6. according to claim 1 or 2 or 3 or 4 or 5 described EGR valves, it is characterized in that described sealing seat (3) end has flexible sealing layer (3b), and sealing layer (3b) is corresponding with the valve block position.
7. EGR valve according to claim 6 is characterized in that, described sealing seat (3) end has the sealed department (3a) that annular is protruded, and above-mentioned sealing layer (3b) is covered in sealed department (3a) outside.
8. EGR valve according to claim 7 is characterized in that, described sealing layer (3b) is made by the fluorine rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101486916A CN102230430B (en) | 2011-06-03 | 2011-06-03 | EGR (Exhaust Gas Recirculation) valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101486916A CN102230430B (en) | 2011-06-03 | 2011-06-03 | EGR (Exhaust Gas Recirculation) valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102230430A true CN102230430A (en) | 2011-11-02 |
| CN102230430B CN102230430B (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101486916A Expired - Fee Related CN102230430B (en) | 2011-06-03 | 2011-06-03 | EGR (Exhaust Gas Recirculation) valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN102230430B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506699A (en) * | 2011-11-25 | 2012-06-20 | 合肥昌辉汽车电子有限公司 | EGR (Exhaust Gas Recirculation) valve sensor |
| CN104100418A (en) * | 2014-07-08 | 2014-10-15 | 无锡隆盛科技股份有限公司 | Pressure relief structure of electric EGR (exhaust gas recirculation) valve |
| CN104454253A (en) * | 2014-12-03 | 2015-03-25 | 无锡隆盛科技股份有限公司 | Sealing gasket structure of dual-valve-core electrically operated EGR valve |
| CN105221297A (en) * | 2015-11-12 | 2016-01-06 | 无锡隆盛科技股份有限公司 | A kind of exhaust pressure relief structure being applied to electric EGR valve |
| CN107023695A (en) * | 2017-05-27 | 2017-08-08 | 江苏龙迈环保设备有限公司 | A kind of operated pneumatic valve of two-way double structure |
| CN107587957A (en) * | 2017-08-29 | 2018-01-16 | 博格华纳汽车零部件(宁波)有限公司 | EGR valve of engine |
| CN108145411A (en) * | 2017-12-29 | 2018-06-12 | 博格华纳排放系统（宁波）有限公司 | EGR valve assembling line and its assembly method |
| EP3561344A1 (en) * | 2018-04-25 | 2019-10-30 | Continental Automotive GmbH | Exhaust-gas valve for an exhaust-gas control device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1154454A (en) * | 1995-10-26 | 1997-07-16 | 特拉华兰科有限公司 | Valve |
| JPH1089161A (en) * | 1996-09-17 | 1998-04-07 | Sanwa Seiki Co Ltd | Flow rate adjusting valve for exhaust gas recirculating system |
| FR2827011A1 (en) * | 2001-07-05 | 2003-01-10 | Renault | Control valve for I.C. engine exhaust gas recirculation circuit comprises inlet orifice connected to exhaust manifold and outlet orifices connected to cooling exchanger and air admission manifold respectively |
| JP2009243267A (en) * | 2006-08-04 | 2009-10-22 | Mitsubishi Electric Corp | Valve device |
| CN101900209A (en) * | 2010-07-02 | 2010-12-01 | 徐从敏 | Shutoff check fluid valve |
| CN202108615U (en) * | 2011-06-03 | 2012-01-11 | 浙江九隆机械有限公司 | Exhaust gas recirculation (EGR) valve |
-
2011
- 2011-06-03 CN CN2011101486916A patent/CN102230430B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1154454A (en) * | 1995-10-26 | 1997-07-16 | 特拉华兰科有限公司 | Valve |
| JPH1089161A (en) * | 1996-09-17 | 1998-04-07 | Sanwa Seiki Co Ltd | Flow rate adjusting valve for exhaust gas recirculating system |
| FR2827011A1 (en) * | 2001-07-05 | 2003-01-10 | Renault | Control valve for I.C. engine exhaust gas recirculation circuit comprises inlet orifice connected to exhaust manifold and outlet orifices connected to cooling exchanger and air admission manifold respectively |
| JP2009243267A (en) * | 2006-08-04 | 2009-10-22 | Mitsubishi Electric Corp | Valve device |
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| CN202108615U (en) * | 2011-06-03 | 2012-01-11 | 浙江九隆机械有限公司 | Exhaust gas recirculation (EGR) valve |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506699A (en) * | 2011-11-25 | 2012-06-20 | 合肥昌辉汽车电子有限公司 | EGR (Exhaust Gas Recirculation) valve sensor |
| CN104100418A (en) * | 2014-07-08 | 2014-10-15 | 无锡隆盛科技股份有限公司 | Pressure relief structure of electric EGR (exhaust gas recirculation) valve |
| CN104454253A (en) * | 2014-12-03 | 2015-03-25 | 无锡隆盛科技股份有限公司 | Sealing gasket structure of dual-valve-core electrically operated EGR valve |
| CN105221297A (en) * | 2015-11-12 | 2016-01-06 | 无锡隆盛科技股份有限公司 | A kind of exhaust pressure relief structure being applied to electric EGR valve |
| CN107023695A (en) * | 2017-05-27 | 2017-08-08 | 江苏龙迈环保设备有限公司 | A kind of operated pneumatic valve of two-way double structure |
| CN107023695B (en) * | 2017-05-27 | 2023-11-07 | 江苏龙迈环保设备有限公司 | Pneumatic valve with two-way double structure |
| CN107587957A (en) * | 2017-08-29 | 2018-01-16 | 博格华纳汽车零部件(宁波)有限公司 | EGR valve of engine |
| CN108145411A (en) * | 2017-12-29 | 2018-06-12 | 博格华纳排放系统（宁波）有限公司 | EGR valve assembling line and its assembly method |
| CN108145411B (en) * | 2017-12-29 | 2024-04-05 | 博格华纳排放系统（宁波）有限公司 | EGR valve assembly production line and assembly method thereof |
| EP3561344A1 (en) * | 2018-04-25 | 2019-10-30 | Continental Automotive GmbH | Exhaust-gas valve for an exhaust-gas control device |
| WO2019206743A1 (en) * | 2018-04-25 | 2019-10-31 | Cpt Group Gmbh | Exhaust-gas valve for an exhaust-gas control device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102230430B (en) | 2013-04-03 |
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Granted publication date: 20130403 |