WO2006124292A1 - Adjustable valve poppet - Google Patents
Adjustable valve poppet Download PDFInfo
- Publication number
- WO2006124292A1 WO2006124292A1 PCT/US2006/016991 US2006016991W WO2006124292A1 WO 2006124292 A1 WO2006124292 A1 WO 2006124292A1 US 2006016991 W US2006016991 W US 2006016991W WO 2006124292 A1 WO2006124292 A1 WO 2006124292A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- shaft
- flow control
- control member
- stem
- Prior art date
Links
- 239000012530 fluid Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims description 10
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 238000005476 soldering Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 238000002788 crimping Methods 0.000 claims 6
- 239000000356 contaminant Substances 0.000 abstract description 3
- 238000004939 coking Methods 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000571 coke Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/48—Attaching valve members to screw-spindles
- F16K1/482—Attaching valve members to screw-spindles with a collar on the spindle or a groove in the spindle, by which a fixing element is supported, the spindle reaching into the valve member
- F16K1/485—Attaching valve members to screw-spindles with a collar on the spindle or a groove in the spindle, by which a fixing element is supported, the spindle reaching into the valve member with a groove in the spindle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/65—Constructional details of EGR valves
- F02M26/66—Lift valves, e.g. poppet valves
- F02M26/67—Pintles; Spindles; Springs; Bearings; Sealings; Connections to actuators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/65—Constructional details of EGR valves
- F02M26/66—Lift valves, e.g. poppet valves
- F02M26/68—Closing members; Valve seats; Flow passages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K25/00—Details relating to contact between valve members and seats
- F16K25/04—Arrangements for preventing erosion, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/11—Manufacture or assembly of EGR systems; Materials or coatings specially adapted for EGR systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/50—Arrangements or methods for preventing or reducing deposits, corrosion or wear caused by impurities
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/65—Constructional details of EGR valves
- F02M26/74—Protection from damage, e.g. shielding means
Definitions
- the present invention relates to a one-piece valve arrangement and method of assembly of the valve arrangement in order to maintain proper alignment of the valve member with the valve seat during assembly.
- Poppet style valves are well known and used in controlling the flow of fluids and especially gasses through a valve body.
- the recirculation of a portion of the exhaust stream of an internal combustion engine into the intake manifold can be accomplished using a poppet style exhaust gas recirculation
- EGR valve EGR valve.
- One obstacle with using valves of any type in an EGR application is that the valve member will almost certainly be exposed to moisture laden corrosive vapor that can adhere to and cause coking on the valve shaft.
- the coking materials can enter into the actuator housing by seeping through the bushing between the valve shaft and actuator as the valve shaft moves in an axial direction. This can cause unwanted corrosion of the actuator.
- valves In order to prevent the exposure of the valve shaft to contaminants some valves have been designed to incorporate certain anti-contamination features that will direct the corrosive gasses away from the valve shaft during valve operation.
- the use of anti-contamination features increases the number of parts that must be arranged during assembly. Additionally, the use of anti- contamination features can also effect the alignment of the valve member with regard to the valve seat since the use of such items as shaft shields, scrapers and other features make it more difficult to align the valve member with the valve seat during assembly.
- the present invention relates to a valve arrangement having a valve body with an inlet passage and an outlet passage.
- a valve seat is disposed in the valve body and forms an aperture positioned in the path of fluid flow between the inlet and outlet passages.
- a shaft member is disposed within the valve body and has a flow control member connected to the end of the shaft.
- the flow control member has a valve portion for operably engaging the valve seat and a valve extension portion that extends from the valve portion and circumscribes the shaft in order to shield the shaft from being exposed to contaminants.
- the valve portion and valve extension portion are integrally formed into a one-piece member thus eliminating an additional component in the valve design.
- the present invention also includes a method of assembling a valve while maintaining alignment of the valve member with respect to the valve seat during assembly.
- the valve member has a housing with an inlet port and an outlet port.
- a valve seat is arranged in the housing in the path of fluid flow between the inlet and outlet ports.
- a flow control member having a valve portion has an axial aperture formed through the valve member for receiving an end of a valve shaft.
- the method of aligning includes placing the flow control member against the valve seat, sliding one end of the valve shaft into the aperture of the flow control member, adjusting the position of the valve shaft to a predetermined position in order to allow proper valve function and fixing the valve shaft to the flow control member once proper alignment has been set.
- Fig. 1 is a cross-sectional plan view of the valve housing with the one- piece flow control member inserted and aligned with the valve seat and having the valve shaft located outside of the valve body prior to insertion;
- Fig. 2 is a cross-sectional plan view of the flow control member positioned in alignment with the valve seat having the valve shaft connected to the flow control member after alignment;
- Fig. 3 is a close up cross-sectional plan view of the flow control member seated on the valve seat with the end of the valve shaft inserted through the aperture of the flow control member during alignment;
- Fig. 4 is a cross-sectional plan view of an alternate embodiment of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following description of the preferred embodiment(s) is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
- Figs. 1-3 show a valve arrangement 10 that incorporates a one piece flow control member 22 and depicts a method of aligning the flow control member 22 during assembly of the valve arrangement 10.
- the valve arrangement 10 includes a valve body 12 having an inlet port 14 and an outlet port 16.
- the valve body 12 defines the path of fluid flow between the inlet port 14 and the outlet port 16.
- the fluid flowing through the valve body 12 can be any type of fluid medium where a valve incorporating a flow control member 22 can be used.
- This particular embodiment of the invention depicts a valve body 12 that is part of an exhaust gas recirculation (EGR) valve member and the fluid medium flowing through the valve body 12 is exhaust gas from the engine exhaust manifold that is recirculated back to the intake manifold of the engine.
- a valve seat 18 having an aperture 20 is contained within the valve body 12 and is positioned in the path of fluid flow between the inlet port 14 and outlet port 16.
- the valve seat 18 can be a separate piece that is press fit into the valve body 12 or it may be cast or integrally formed within the valve body 12.
- the flow control member 22 is configured to selectively engage with the valve seat 18 in order to seal off the aperture 20 and block the flow of fluid between the inlet port 14 and outlet port 16.
- the flow control member 22 is an integrally formed one piece member having a valve portion 24, that is a surface configured to mate with and seal against the valve seat 18.
- the flow control member 22 also has a valve extension 26 that extends from the valve portion 24 and is defined as the portion of the flow control member 22 that extends beyond that which is necessary to facilitate the opening and closing of the valve seat 18.
- the valve extension portion 26 is shown in the drawings as being an annular wall that circumvents a portion of a valve shaft 30. However, the valve extension portion 26 does not necessarily have to be an annular wall that circumvents a portion or the valve shaft 30; rather it can take many forms and does not have to extend a great distance from the valve portion 24.
- the valve extension portion 24 can provide many benefits such as coking and or flow deflection.
- valve extension portion 26 functions to protect the valve shaft 30 from coming into direct contact with the fluid medium moving through the aperture 20 of the valve seat 18 from the inlet port 14. By preventing contact of fluid medium with the valve shaft 30 there is a significant reduction in the occurrence of coke formation on the valve shaft 30.
- the flow control member 22 also has a stem 28 formed generally about the longitudinal axis of the valve shaft 30.
- the stem 28 shown in Figs. 1-2 have an open end, while Fig. 3 is slightly different in that the stem 28 has a closed end 35 and forms a blind hole.
- the valve shaft 30 has a moveable end 32 that is configured to slide into the stem 28.
- a radial groove 34 is formed on the surface of the valve shaft 30 near the moveable end 32.
- the radial groove 34 is also configured to slide within the stem 28.
- the valve shaft 30 is then connected to the flow control member 22 by forming a crimp 38 in the stem 28, so that the stem 28 has a crimp 38 formed at the location of the radial groove 34 on the valve shaft 30. Once the crimp 38 has been formed the flow control member 22 will move longitudinally with the sliding movement of the valve shaft 30 to open and close aperture 20 of the valve seat 18.
- Figs. 1-3 depict a method for aligning the flow control member 22 during assembly of the valve arrangement 10 so that the valve portion 24 will properly seat against the valve seat 18 to ensure proper valve operation.
- Fig. 1 depicts the first step of placing the flow control member 22 in position against the valve seat 18. While Fig. 1 depicts the flow control member 22 being placed against the valve seat 18 it is within the scope of this invention for the flow control member 22 to be placed at any predetermined position relative to the valve seat.
- the flow control member 22 is positioned so that the stem 28 extends through the aperture 20 of the valve seat 18.
- the moveable end 32 of the valve shaft 30 is then slid into position so that the moveable end 32 enters the stem 28.
- Fig. 2 shows the valve shaft being placed in position.
- Aligning the valve shaft 30 also involves inserting bushing 40 to the proper depth in the valve body 12. Achieving proper alignment of the valve shaft and bushing 40 eliminates the need to use shims or other spatial compensating components. Once alignment has been achieved the stem 28 is crimped 38 to connect the flow control member 22 to the valve shaft 30.
- Fig. 3 shows the point of connection between the shield valve 22 and the valve shaft 30.
- Fig. 1 as depicted is slightly different from Fig. 2 in that the stem 28 has a closed end or blind hole that the valve shaft 30 slides into. This will ensure that there can be no leakage through the valve seat 18 by way of the connection point between the stem 28 and valve shaft 30.
- the crimp 38 that hold the flow control member 22 to the valve shaft 30 is formed at the radial groove 34. It is also within the scope of this invention to fasten the flow control member 22 to the valve shaft 30 by a means other than the crimp 38. For example, adhesives, soldering or laser welding can be used to connect the valve shaft 30 to the flow control member 22.
- Fig. 1 as depicted is slightly different from Fig. 2 in that the stem 28 has a closed end or blind hole that the valve shaft 30 slides into. This will ensure that there can be no leakage through the valve seat 18 by way of the connection point between the stem 28 and valve shaft 30.
- FIG 3 shows a close-up view of the radial groove 34 at the formation of the crimp 38.
- Knurled portions 36 on the moveable end 32 of the valve shaft 30 are placed adjacent the radial groove 34.
- the knurled portions 36 function during the step of sliding the valve shaft 30 into the stem 28 by preventing unwanted movement of the valve shaft 30 during assembly.
- the flow control member 22 is not necessarily placed relative to the valve seat, rather the predetermined position can be in relation to a specific flow position, or a full open stop, or in relation to a valve mounting surface feature.
- valve shaft 30 and a bushing 40 may be supplied independent from the valve body 12.
- the valve body 12 may be integrally formed as part of another component such as a turbocharger housing and an engine intake manifold.
- the flow control member 22 valve stem 30 and bushing 40 may be connected to an actuator (not shown) that is fastened to the valve body 12. It is possible to pre-configure the flow control member 22 based on the mounting surface between the valve body 12 and the actuator (not shown) that controls the position of the flow control member 22.
- Fig. 4 depicts an alternate embodiment of a valve arrangement 100.
- This particular embodiment of the invention has a flow control member 102 that has a slightly modified configuration.
- the flow control member 102 has a stem 104 that does not extend into the aperture 20 of the valve seat 18.
- the valve seat 18 is closed by an annular shoulder 106 that rests against the surface of the valve seat 18.
- the stem 104 is used to connect the flow control member 102 with the valve shaft 30 in a manner similar to the embodiment of the invention described in Figs. 1-3. That is the end of the valve shaft 30 slides into the stem 104 and the crimp 34 is formed in between the stem 104 and the valve shaft 30.
- the crimp 34 connects the flow control member 102 with the valve shaft 30 so that the flow control member 102 moves with the valve shaft during operation of the valve arrangement 100.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lift Valve (AREA)
- Taps Or Cocks (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112006000967T DE112006000967T5 (en) | 2005-05-11 | 2006-05-03 | Adjustable valve disc |
JP2008511176A JP2008540959A (en) | 2005-05-11 | 2006-05-03 | Adjustable valve poppet |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/126,629 US20060255308A1 (en) | 2005-05-11 | 2005-05-11 | Adjustable valve poppet |
US11/126,629 | 2005-05-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2006124292A1 true WO2006124292A1 (en) | 2006-11-23 |
WO2006124292A8 WO2006124292A8 (en) | 2007-01-18 |
Family
ID=37015358
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2006/016991 WO2006124292A1 (en) | 2005-05-11 | 2006-05-03 | Adjustable valve poppet |
Country Status (6)
Country | Link |
---|---|
US (1) | US20060255308A1 (en) |
JP (1) | JP2008540959A (en) |
KR (1) | KR20080007440A (en) |
CN (1) | CN101171447A (en) |
DE (1) | DE112006000967T5 (en) |
WO (1) | WO2006124292A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2008081623A1 (en) * | 2006-12-28 | 2010-04-30 | 三菱電機株式会社 | Exhaust gas recirculation valve |
DE102016226075A1 (en) * | 2016-12-22 | 2018-06-28 | Continental Automotive Gmbh | Valve |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI377307B (en) * | 2009-03-26 | 2012-11-21 | Smc Kk | Flow rate control valve and assembly method therefor |
JP5849594B2 (en) * | 2011-10-14 | 2016-01-27 | アイシン精機株式会社 | Fluid control valve |
FR2983249B1 (en) * | 2011-11-28 | 2015-01-09 | Valeo Sys Controle Moteur Sas | METHOD FOR MOUNTING AN AIR CONTROL VALVE |
GB2501710B (en) * | 2012-05-01 | 2014-08-27 | Perkins Engines Co Ltd | Improvements in valves |
CN103953471A (en) * | 2014-04-17 | 2014-07-30 | 无锡隆盛科技股份有限公司 | Device for reducing carbon deposit of EGR (exhaust gas recirculation) valve |
CN104976379B (en) * | 2015-06-24 | 2018-10-09 | 宁新环保科技(上海)有限公司 | Rotary threeway scavenging air valve |
JP6468129B2 (en) * | 2015-08-27 | 2019-02-13 | 株式会社デンソー | Exhaust gas control valve |
EP3252356B1 (en) * | 2016-06-03 | 2020-06-03 | Fas Medic S.A. | Valve components and method of assembly therefor |
CN108119694B (en) * | 2016-11-28 | 2021-06-01 | 株式会社山田制作所 | Method for manufacturing thermo-valve and thermo-valve |
WO2021004951A1 (en) * | 2019-07-09 | 2021-01-14 | Protechna S.A. | Valve shaft locking mechanism |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5044604A (en) * | 1990-08-31 | 1991-09-03 | Topham Fred A | Valve plug having fluid directing grooves |
JPH04159446A (en) * | 1990-10-22 | 1992-06-02 | Mitsubishi Electric Corp | Exhaust gas recirculation control valve |
EP0598233A1 (en) * | 1992-11-19 | 1994-05-25 | F.A. Sening Gmbh | Gas or fluid valve especially for a tank waggon and mounting process |
EP1450030A1 (en) * | 2003-02-18 | 2004-08-25 | Delphi Technologies, Inc. | Exhaust gas recirculation valve |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
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US3098637A (en) * | 1960-06-23 | 1963-07-23 | American Air Filter Co | Balancing and shutoff valve |
US4535808A (en) * | 1983-07-08 | 1985-08-20 | Dicken Manufacturing Company | Check valve |
US5020505A (en) * | 1989-11-13 | 1991-06-04 | General Motors Corporation | Exhaust gas recirculation valve assembly |
US5368273A (en) * | 1992-10-21 | 1994-11-29 | Allied Signal Inc. | Venturi metering system |
US5503123A (en) * | 1995-05-01 | 1996-04-02 | Ford Motor Company | Internal combustion engine cylinder puppet valve having self-aligning guide |
US6422223B2 (en) * | 1999-03-11 | 2002-07-23 | Borgwarner, Inc. | Electromechanically actuated solenoid exhaust gas recirculation valve |
US6247461B1 (en) * | 1999-04-23 | 2001-06-19 | Delphi Technologies, Inc. | High flow gas force balanced EGR valve |
US6497226B2 (en) * | 2000-02-18 | 2002-12-24 | Delphi Technologies, Inc. | Modular, compliant, sealing bearing assembly |
US6460521B1 (en) * | 2001-10-05 | 2002-10-08 | Siemens Automotive Inc. | Solenoid-actuated emission control valve having a BI-conical pole piece |
US6845762B2 (en) * | 2001-11-14 | 2005-01-25 | Siemens Vdo Automotive Inc. | Force emission control valve |
US6874755B2 (en) * | 2002-10-02 | 2005-04-05 | Delphi Technologies, Inc. | Fixed shaft moisture intrusion shield for a valve pintle |
-
2005
- 2005-05-11 US US11/126,629 patent/US20060255308A1/en not_active Abandoned
-
2006
- 2006-05-03 JP JP2008511176A patent/JP2008540959A/en not_active Withdrawn
- 2006-05-03 WO PCT/US2006/016991 patent/WO2006124292A1/en active Application Filing
- 2006-05-03 DE DE112006000967T patent/DE112006000967T5/en not_active Withdrawn
- 2006-05-03 CN CNA2006800159172A patent/CN101171447A/en active Pending
- 2006-05-03 KR KR1020077024394A patent/KR20080007440A/en not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5044604A (en) * | 1990-08-31 | 1991-09-03 | Topham Fred A | Valve plug having fluid directing grooves |
JPH04159446A (en) * | 1990-10-22 | 1992-06-02 | Mitsubishi Electric Corp | Exhaust gas recirculation control valve |
EP0598233A1 (en) * | 1992-11-19 | 1994-05-25 | F.A. Sening Gmbh | Gas or fluid valve especially for a tank waggon and mounting process |
EP1450030A1 (en) * | 2003-02-18 | 2004-08-25 | Delphi Technologies, Inc. | Exhaust gas recirculation valve |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 016, no. 452 (M - 1313) 21 September 1992 (1992-09-21) * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2008081623A1 (en) * | 2006-12-28 | 2010-04-30 | 三菱電機株式会社 | Exhaust gas recirculation valve |
US8069846B2 (en) | 2006-12-28 | 2011-12-06 | Mitsubishi Electric Corporation | Exhaust gas recirculation valve |
DE102016226075A1 (en) * | 2016-12-22 | 2018-06-28 | Continental Automotive Gmbh | Valve |
US11168807B2 (en) | 2016-12-22 | 2021-11-09 | Vitesco Technologies GmbH | Concentrically annular valve piston and seat |
Also Published As
Publication number | Publication date |
---|---|
WO2006124292A8 (en) | 2007-01-18 |
DE112006000967T5 (en) | 2008-02-28 |
JP2008540959A (en) | 2008-11-20 |
KR20080007440A (en) | 2008-01-21 |
US20060255308A1 (en) | 2006-11-16 |
CN101171447A (en) | 2008-04-30 |
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