EP2373874B1 - Vanne hydraulique multivoies - Google Patents

Vanne hydraulique multivoies Download PDF

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Publication number
EP2373874B1
EP2373874B1 EP09749147.6A EP09749147A EP2373874B1 EP 2373874 B1 EP2373874 B1 EP 2373874B1 EP 09749147 A EP09749147 A EP 09749147A EP 2373874 B1 EP2373874 B1 EP 2373874B1
Authority
EP
European Patent Office
Prior art keywords
bulge
groove
frame element
valve
filter element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP09749147.6A
Other languages
German (de)
English (en)
Other versions
EP2373874A1 (fr
Inventor
Jens Hoppe
Stefan Konias
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of EP2373874A1 publication Critical patent/EP2373874A1/fr
Application granted granted Critical
Publication of EP2373874B1 publication Critical patent/EP2373874B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/794—With means for separating solid material from the fluid
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/794—With means for separating solid material from the fluid
    • Y10T137/7976—Plural separating elements
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86622—Motor-operated
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49405—Valve or choke making
    • Y10T29/49412—Valve or choke making with assembly, disassembly or composite article making

Definitions

  • the invention relates to a hydraulic directional control valve with a valve housing and a filter element, wherein at least one circumferentially extending groove is provided on the valve housing, wherein the filter element is disposed in the groove and at least one frame member and a fixedly connected to this filter fabric and wherein the groove a groove bottom and two substantially in the radial direction and circumferential direction extending side walls and a method for producing the directional control valve.
  • Such directional valves are used in internal combustion engines, for example for controlling hydraulic camshaft adjusters or switchable cam followers, for example switchable drag levers, bucket tappets or roller tappets.
  • the directional control valves consist of an actuating unit and a valve section.
  • the actuating unit may be, for example, an electromagnetic or hydraulic actuator.
  • the valve section represents the hydraulic section of the directional control valve, wherein an inlet connection, at least one working connection and a tank connection are usually formed on the latter.
  • a directional control valve for controlling a camshaft adjuster, this is normally designed as a 4/3 proportional directional control valve.
  • a proportional valve is for example in the DE 100 27 080 A1 disclosed.
  • the valve section consists of a valve housing and a control piston arranged axially displaceable therein.
  • the valve housing is usually arranged within a cylindrical, blind hole-like receptacle of the cylinder head or a central bore of the camshaft adjuster.
  • On the outer circumferential surface of the valve housing four annular grooves are formed in the groove bottom openings are formed, which serve as pressure medium connections.
  • a pressure medium channel is formed per annular groove, which opens into the respective annular groove. Via the connections, pressure medium can enter the interior of the valve housing or emerge from the interior of the valve housing.
  • a control piston is arranged axially displaceable, wherein the outer diameter of the control piston is adapted to the inner diameter of the valve housing. Furthermore, ring grooves are likewise formed on the control piston, via which adjacent pressure medium connections can be connected to one another,
  • a coil and an armature are arranged inside the actuator.
  • the armature By energizing the coil, the armature is displaced in the axial direction, wherein this movement is transmitted to the control piston by means of a push rod attached to the armature.
  • a spring acts on the control piston, which is supported on the valve housing and acts on the piston in the axial direction to the actuating unit with a force.
  • Directional valves for controlling switchable cam followers are usually designed as switching valves.
  • Such a switching valve is, in one embodiment as a 3/2-way valve, for example, from DE 103 59 363 A1 known.
  • the function and design of the electromagnetic actuator are largely analogous to that of the proportional valve.
  • an inlet connection, a working connection and a tank connection are formed on the valve section.
  • the working connection communicates via a respective valve seat designed as opening with both the inlet and the tank connection.
  • a control piston is further arranged, formed on which two closing elements are. Each closing element can, depending on the position of the control piston within the valve housing, block or release the pressure medium flow through one of the valve seats.
  • the working connection can thus be selectively connected to the inlet connection or to the tank connection.
  • the axial position of the control piston is in turn set via the axial position of the armature relative to the second magnetic yoke.
  • Each of the hydraulic connections is assigned a ring filter.
  • Each ring filter is positioned in one of the annular grooves, each ring filter extending along the entire circumferential direction of the circular groove bottom.
  • the ring filter has a frame element made of an elastic plastic.
  • the frame member has two extending in the circumferential direction of the valve housing part elements which face each other in the axial direction and are connected to each other via cross braces. Between the sub-elements and the cross struts a filter fabric is arranged.
  • the filter fabric can be inserted for example in the production of the frame member as an injection molded part in the injection mold and molded with the plastic.
  • the frame member is flexible and has in the circumferential direction two opposing open ends, which can be connected to each other by means of a closure after inserting the ring filter in the groove.
  • a disadvantage of this embodiment is that the cross struts of the frame member, with a slight misalignment of the ring filter to the valve housing, radially to the openings of the terminals or directly adjacent to the opening of the formed in the cylinder head pressure fluid channel, with which the annular groove communicates, can be arranged.
  • the misalignment can be caused during operation, for example, by the flow forces of the pressure medium and the game between the annular groove and the frame member. This results in a significant throttling of the pressure medium flow through the directional control valve, resulting in an unwanted, time-varying change the way valve characteristic, and thus in the worst case leads to failure of the control of the connected hydraulic consumer,
  • the US 2003/0226593 A1 shows a hydraulic Wegeventi mi9t a valve housing and a filter element. Enlang the circumference of the valve housing extends a groove in which the filter element is arranged.
  • the filter element consists of a frame and a filter fabric.
  • the groove is designed such that along a peripheral portion extending in the axial direction recesses narrow the width of the groove.
  • the frame element is adapted to the geometry of the groove.
  • the WO 2008/03487 A1 has a hydraulic control valve to the object with a circumferential groove and a filter element inserted therein. At a portion along the circumference, the side walls of the groove indentations, engage in the bulges of the Filterlements.
  • the invention is therefore based on the object to avoid these disadvantages and thus to provide a hydraulic directional control valve having at least one filter element to protect one of the hydraulic connections from contamination of the pressure medium, wherein the intended valve characteristic over the entire life of the internal combustion engine is to be maintained.
  • the object is achieved in that at least one of the side walls has at least one axial bulge which extends in the direction of the frame member and engages positively and or non-positively on the frame member.
  • the example cylindrical valve housing of the hydraulic directional valve has a groove which extends in the circumferential direction of the valve housing and is formed for example as an annular groove.
  • the groove has a groove bottom in which radial openings are formed, via which the groove communicates with the interior of the valve housing.
  • the groove acts as a hydraulic connection, can get into the interior of the valve housing via the pressure medium or can escape from this.
  • the filter element which may for example be designed as a ring filter, arranged.
  • the filter element has a filter fabric, which is bounded by a frame element, which is made for example of a suitable plastic.
  • the frame element on two circular sub-elements, which are arranged axially to each other and connected to each other via axial struts.
  • the dimensions of the frame member are adapted to the dimensions of the groove such that pressure medium, which is supplied to the interior of the valve housing or discharged therefrom, must pass through the filter fabric. This ensures that impurities in the pressure medium do not get into the interior of the valve housing.
  • the groove is designed to be open radially outward and is bounded radially inward by a groove bottom, for example of a cylinder jacket, and in the axial direction by a respective, for example, annular side wall. On at least one of the side walls, an axial protrusion is formed, which extends to the frame member.
  • the filter element is secured against movements in the circumferential direction of the valve housing.
  • This can be realized by a Formund or adhesion between the bulge and the frame member.
  • the bulge can be formed, for example, only in a certain area of the side wall.
  • the bulge may be formed, for example, along the entire extension of the groove in the circumferential direction. This prevents that the filter element unintentionally shifts out of its installation position at Druckstoffbach notebook linen.
  • the bulge rests positively on an axial side surface of the frame member.
  • the filter element is in this case under axial bias to the bulge.
  • the frame member is clamped in this case between the bulge and the opposite side wall.
  • the frame element projects beyond the groove in the radial direction. This ensures that the axially extending bulge acts on the axial side surface of the frame element.
  • the bulge is at least partially disposed radially outside of the frame member and frictionally rests against a radially outer surface, for example, the peripheral surface of the frame member.
  • the filter element is pressed in this case radially inwardly against the groove bottom.
  • the bulge engages in a recess, for example a recess, of the frame element.
  • recesses may be provided on the frame element, for example in an axial or radial side surface, into which material of the side wall is displaced.
  • the material of the protrusion may dig into the frame member during its manufacture.
  • the recesses of the frame member and the bulge of the side wall act as a stop and a counter-stop, whereby a movement of the filter element relative to the bulge and thus the groove bottom are prevented.
  • the bulge engage frictionally on the boundary walls of the recess.
  • At least the side wall, which is provided with the bulge is step-shaped, wherein the frame member is at least partially and the bulge are arranged radially within the step.
  • the caulking tool can engage the step to form the protrusion. Material of the step which is displaced radially outward during the stemming process is thus still located radially inside the groove.
  • the bulge may be formed, for example, by means of a caulking process, by means of an embossing process or ring embossing process.
  • a caulking pressure on the valve housing such as the stage
  • the radially outer edge of the side wall or the step for example by means of an embossing process or rolling process can be displaced in the axial direction such that the displaced material (the bulge) presses the frame member against the groove bottom.
  • the filter element is first inserted into the groove and then formed the bulge.
  • FIG. 1 shows a hydraulic directional control valve 1 according to the invention in a plan view, using the example of a 4/3-Wegeproprtionalventils directional control valve 1.
  • the directional control valve 1 consists of an actuator 2 and a valve section 3. Such directional control valves 1 are used for example for the control of hydraulic camshaft adjusters.
  • the valve section 3 of the directional control valve 1 is usually accommodated in a receptacle of a surrounding construction, for example a cylinder head or a cylinder head cover.
  • the valve section 3 has a substantially cylindrically designed valve housing 6 and a control piston 7.
  • the valve housing 6 is formed as a separate component and firmly connected to the actuator 2.
  • the grooves 9 are bounded radially inwardly by a respective cylinder jacket-shaped groove bottom 10 and in the axial direction by an annular side wall 4.
  • the grooves 9 communicate via openings 11 formed in the groove bottoms 10 with the interior of the substantially hollow cylindrical valve housing 6.
  • the openings 11 of the grooves 9 and the electromagnetic actuator 2 facing away from the opening 11 of the valve housing 6 serve as pressure medium connections A, B, P, T.
  • control piston 7 Within the valve housing 6, the control piston 7 is arranged axially displaceable. On the outer circumferential surface of the control piston 7 are as ring lands executed control sections 12 are formed. The outer diameter of the control sections 12 is adapted to the inner diameter of the valve housing 6. By means of a suitable axial positioning of the control piston 7 relative to the valve housing 6, adjacent pressure medium connections A, B, P can be connected to one another. The work connection A, B which is not connected to the feed connection P is simultaneously connected to the tank connection T. In this way, the individual pressure chambers of the camshaft adjuster pressure medium can be selectively supplied or derived from these.
  • the control piston 7 is acted on one end with the force of a spring element, not shown, in the direction of the electromagnetic actuator 2. At the other axial end of the control piston 7 is located on a push rod, not shown, which is connected to an armature of the actuator 2, not shown.
  • control piston 7 In the de-energized state of the actuator 2, the control piston 7 is urged in the direction of the electromagnetic actuator 2 due to the force of the spring element. By energizing the actuator 2, the control piston 7 is moved against the force of the spring element.
  • a filter element 13 in the illustrated embodiment, a ring filter is arranged, which extends along the entire circumference of the groove 9.
  • the filter element 13 has a frame element 14 and a filter fabric 15.
  • the frame member 14 comprises two extending in the circumferential direction of the valve housing 6 sub-elements 16 which are interconnected by means of axially extending transverse struts 17. Between the partial elements 16 and the transverse struts 17, the filter fabric 15 is arranged.
  • the transverse struts 17 are advantageously arranged between the openings 11.
  • Pressure medium which is conveyed by the pressure medium pump, not shown, to the central groove 9, passes through the filter fabric 15 to the openings 11 and thus into the interior of the directional control valve 1, wherein foreign matter located in the pressure medium are kept away from the interior of the directional control valve 1.
  • FIG. 2 shows the detail Z out FIG. 1 in longitudinal section.
  • the frame member 14 is completely disposed within the groove 9 and abuts against the side walls 4.
  • an annular bulge 5 is formed, which extends in the axial direction.
  • the bulge 5 is formed such that it presses the frame member 14 against the groove bottom 10.
  • the bulge 5, for example, on the peripheral surface of the frame member 14 abut ( FIG. 2 left side) or on the corner of the frame element 14 act ( FIG. 2 right side).
  • 14 recesses may be provided at the corners of the frame member, in which engage the bulges 5, which in addition to the force closure is made a positive connection in the circumferential direction.
  • the assembly of the filter element 13 extends in several steps. After the manufacture of the valve housing 6, the filter element 13 is positioned in the groove 9. The side walls 4 have no bulges 5 at this time. Thus, the filter element 13 can easily insert into the groove 9. Subsequently, the bulges 5 are produced, for example, by means of a ring embossing process. Likewise conceivable are embodiments in which instead of the annular bulge 5 only local bulges 5 are formed. These can be produced, for example, by means of an embossing or caulking process.
  • FIG. 3 shows an alternative embodiment of a hydraulic directional control valve 1 in the illustration of FIG. 2
  • the side walls 4 are step-shaped in the radial direction.
  • the groove 9 thus has a radially outer portion with a larger axial extent and a radially inner portion Section with smaller axial extent on.
  • the areas are connected via a step 18.
  • the step 18 is straight and arranged at right angles to the sections of the side walls 4, although other embodiments are conceivable.
  • the filter element 13 is positioned in the radially inner portion of the groove 9, wherein the frame member 14 abuts the inner portions of the side walls 4 and the step 18 projects beyond in the radial direction.
  • the radially inner portion of the side wall 4 has below the step 18 on a bulge 5 extending in the axial direction.
  • the bulge 5 engages in a depression 19, for example a recess formed on the frame element 14, on an axial side surface of the left part element 16 of the frame element 14.
  • the bulge 5 may be formed such that it rests in the recess non-positively on the frame member 14, whereby larger forces can be intercepted in the circumferential direction.
  • the filter element 13 extends in several steps. After the manufacture of the valve housing 6, the filter element 13 is positioned in the groove 9 in the radially inner portion. The side walls 4 have no bulges 5 at this time. Thus, the filter element 13 can easily insert into the groove 9. Subsequently, the bulges 5 are produced, for example, by means of a caulking process. In this case, a stamp is pressed onto the step 18, whereby material of the side wall 4 is displaced in the axial direction, whereby the bulge 5 is formed.
  • fastened filter elements 13 may be provided in the outer grooves 9, which serve as working ports A, B.
  • the bulges can be formed on one or both side walls 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Valves (AREA)
  • Magnetically Actuated Valves (AREA)
  • Filtration Of Liquid (AREA)
  • Valve Housings (AREA)

Claims (10)

  1. Soupape hydraulique multivoies (1) avec un carter de soupape (6) et un élément de filtre (13) ;
    - au moins une rainure (9) s'étendant dans la direction périphérique étant prévue au niveau du carter de soupape (6) ;
    - l'élément de filtre (13) étant disposé dans la rainure (9) et comportant au moins un élément de cadre (14) et un tissu de filtre (15) relié fixement à lui ;
    - la rainure (9) comportant un fond de rainure (10) et deux parois latérales (4) s'étendant pour l'essentiel dans la direction radiale et la direction périphérique ;
    - caractérisée en ce qu'au moins une des parois latérales (4) comporte au moins un bombement (5) axial s'étendant en direction de l'élément de cadre (14) et engrenant par complémentarité de forces l'élément de cadre (14).
  2. Soupape hydraulique multivoies (1) selon la revendication 1, caractérisée en ce que le bombement (5) repose par complémentarité de forces contre une surface latérale axiale de l'élément de cadre (14).
  3. Soupape hydraulique multivoies (1) selon la revendication 2, caractérisée en ce que l'élément de cadre (14) dépasse de la rainure (9) dans la direction radiale.
  4. Soupape hydraulique multivoies (1) selon la revendication 1, caractérisée en ce que le bombement (5) est disposé au moins en partie dans le plan radial à l'extérieur de l'élément de cadre (14) et repose par complémentarité de forces contre une surface extérieure dans le plan radial de l'élément de cadre (14).
  5. Soupape hydraulique multivoies (1) selon la revendication 1, caractérisée en ce que le bombement (5) s'engrène dans un renfoncement (19) de l'élément de cadre (14).
  6. Soupape hydraulique multivoies (1) selon la revendication 1, caractérisée en ce qu'au moins la paroi latérale (4) pourvue du bombement (5) est réalisée en forme de marche, l'élément de cadre (14), au moins en partie, et le bombement (5) étant disposés dans le plan radial à l'intérieur de la marche (18).
  7. Procédé de fabrication d'une soupape hydraulique multivoies (1) selon l'une quelconque des revendications précédentes, avec les étapes de procédé suivantes :
    • insertion de l'élément de filtre (13) dans la rainure (9) ; et
    • déformation d'au moins un bombement axial (5) au niveau d'au moins une des parois latérales (4) s'étendant en direction de l'élément de cadre (14) et s'engrenant par complémentarité de formes et/ou de forces au niveau de l'élément de cadre (14).
  8. Procédé selon la revendication 7, caractérisé en ce que le bombement (5) est réalisé à l'aide d'un procédé de matage.
  9. Procédé selon la revendication 7, caractérisé en ce que le bombement (5) est réalisé à l'aide d'un procédé d'estampage ou d'un procédé d'estampage annulaire.
  10. Procédé selon la revendication 7, caractérisé en ce que l'élément de filtre (13) est d'abord inséré dans la rainure (9) puis le bombement (5) réalisé.
EP09749147.6A 2008-12-02 2009-11-13 Vanne hydraulique multivoies Not-in-force EP2373874B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810060069 DE102008060069A1 (de) 2008-12-02 2008-12-02 Hydraulisches Wegeventil
PCT/EP2009/065156 WO2010063556A1 (fr) 2008-12-02 2009-11-13 Vanne hydraulique multivoies

Publications (2)

Publication Number Publication Date
EP2373874A1 EP2373874A1 (fr) 2011-10-12
EP2373874B1 true EP2373874B1 (fr) 2015-07-22

Family

ID=41665948

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09749147.6A Not-in-force EP2373874B1 (fr) 2008-12-02 2009-11-13 Vanne hydraulique multivoies

Country Status (6)

Country Link
US (1) US8534322B2 (fr)
EP (1) EP2373874B1 (fr)
KR (1) KR101647860B1 (fr)
CN (1) CN102239314A (fr)
DE (1) DE102008060069A1 (fr)
WO (1) WO2010063556A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009018044A1 (de) * 2009-04-18 2010-10-21 Schaeffler Technologies Gmbh & Co. Kg Hydraulisches Wegeventil
JP6022814B2 (ja) 2012-06-08 2016-11-09 株式会社ミクニ 制御弁用フィルタおよび制御弁の挿入構造
KR101228868B1 (ko) * 2012-10-08 2013-02-05 주식회사 상아정공 엔진오일 컨트롤 밸브의 필터 독립형 슬리브
CN105041629A (zh) * 2015-07-17 2015-11-11 盐城市佳鑫石化机械制造有限公司 新型防偏磨液力采油装置
US20170356562A1 (en) * 2016-06-10 2017-12-14 Husco Automotive Holdings Inc. Systems and methods for filter orientation on a control valve

Family Cites Families (12)

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Publication number Priority date Publication date Assignee Title
US3741523A (en) * 1971-08-30 1973-06-26 Balon Corp Seat for ball valve
DE9016138U1 (de) * 1990-11-27 1991-02-14 Karl Küfner KG, 7470 Albstadt Filterring
US5482622A (en) * 1994-04-18 1996-01-09 General Motors Corporation Filter for installation in an annular groove
US6382148B1 (en) 1999-06-10 2002-05-07 Unisia Jecs Corporation Oil pressure control apparatus for an internal combustion engine
JP4172211B2 (ja) 2002-06-06 2008-10-29 株式会社デンソー 流量制御装置
JP2005036912A (ja) 2003-07-16 2005-02-10 Denso Corp 油圧制御装置
DE10359363A1 (de) 2003-12-18 2005-07-14 Ina-Schaeffler Kg Elektromagnetisches Hydraulikventil, inbesondere 3/2-Wegeschaltventil zur Steuerung eines variablen Ventiltriebes einer Brennkraftmaschine
DE102005027617A1 (de) * 2004-07-29 2006-03-23 Ina-Schaeffler Kg Ringfilter
JP4183700B2 (ja) 2005-08-03 2008-11-19 株式会社日立製作所 制御弁
JP4967154B2 (ja) * 2005-09-30 2012-07-04 日本化薬株式会社 ガス発生器
JP2007232127A (ja) * 2006-03-02 2007-09-13 Denso Corp 電磁弁
GB0618648D0 (en) 2006-09-22 2006-11-01 Delphi Tech Inc Oil control valve

Also Published As

Publication number Publication date
EP2373874A1 (fr) 2011-10-12
US8534322B2 (en) 2013-09-17
DE102008060069A1 (de) 2010-06-10
KR101647860B1 (ko) 2016-08-11
KR20110105769A (ko) 2011-09-27
US20110232781A1 (en) 2011-09-29
CN102239314A (zh) 2011-11-09
WO2010063556A1 (fr) 2010-06-10

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