EP2373874A1 - Hydraulisches wegeventil - Google Patents
Hydraulisches wegeventilInfo
- Publication number
- EP2373874A1 EP2373874A1 EP09749147A EP09749147A EP2373874A1 EP 2373874 A1 EP2373874 A1 EP 2373874A1 EP 09749147 A EP09749147 A EP 09749147A EP 09749147 A EP09749147 A EP 09749147A EP 2373874 A1 EP2373874 A1 EP 2373874A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- groove
- bulge
- frame member
- directional control
- valve
- 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.)
- Granted
Links
- 239000004744 fabric Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 16
- 238000004049 embossing Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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 groove extending in the circumferential direction is provided on the valve housing, wherein the filter element is arranged in the groove and at least one frame element and a fixedly connected with this filter fabric and wherein the groove has a groove bottom and two side walls extending substantially in the radial and circumferential directions, and a method of manufacturing the directional control valve.
- Such directional control valves are used in internal combustion engines, for example for the control of hydraulic camshaft adjusters or switchable cam followers, for example shiftable cam followers, cup breakers 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 a supply 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 disclosed for example in DE 100 27 080 A1.
- 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 In 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 of the actuator to a force.
- Directional valves for controlling switchable cam followers are usually designed as switching valves.
- Such a switching valve is, in one embodiment known as a 3/2-way valve, for example from DE 103 59 363 A1.
- 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 port communicates via a respective opening formed as a valve seat both with the Inlet as well as with the tank connection.
- a control piston is further arranged, on which two closing elements are formed. 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.
- a ring filter is assigned to each of the hydraulic connections.
- 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 member made of an elastic plastic see.
- 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 for example, in the production of the frame element as an injection molded part inserted into 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 restriction of the pressure medium flow through the directional control valve, which leads to an unwanted, time-varying change in the directional control valve characteristic, and thus in the worst case to the failure of the control of the connected hydraulic consumer.
- the invention is therefore based on the object to avoid these disadvantages and thus to provide a hydraulic directional control valve, which has at least one filter element to protect one of the hydraulic connections from contamination of the pressure medium, wherein the provided valve characteristic over the entire life of the internal combustion engine is maintained should.
- 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, via the pressure medium into the interior of the valve housing 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 inwardly by a groove base, for example of a cylinder jacket, and in the axial direction by a respective, for example, annular side wall.
- 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 the filter element from undesirably shifting out of its installation position when the pressure is flowing through the medium.
- 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.
- This can be realized by displacing material of the side wall in the axial direction, for example by means of a clamping process, after inserting the filter element into the groove.
- 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 arranged at least partially radially outside the frame element and frictionally rests against a radially outer surface, for example the peripheral surface, of the frame element.
- the filter element is pressed in this case radially inwardly against the groove bottom.
- the Bulge engages in a recess, such as a recess of the frame member.
- 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 can frictionally engage the boundary walls of the recess.
- At least the side wall, which is provided with the bulge is step-shaped, wherein the frame member at least partially and the bulge are arranged radially within the step
- the frame member at least partially and the bulge are arranged radially within the step
- the inventive method for producing a hydraulic directional control valve according to the invention comprises at least the following method steps:
- the bulge may be formed, for example, by means of a caulking process, by means of an embossing process or ring embossing process. After inserting the filter element into the annular groove, for example by means of a caulking pressure on the valve housing, such as the stage, be exercised, so that the axial bulge is formed and comes to rest on the frame member, digging into the frame member or in the recess of the Engages frame element.
- 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 according to the invention in a top view
- FIG 3 shows the detail Z of Figure 1 of another invention
- Embodiment of a hydraulic directional control valve in longitudinal section Embodiment of a hydraulic directional control valve in longitudinal section.
- Figure 1 shows a hydraulic directional control valve 1 according to the invention in a plan view, using the example of a 4/3-Wegeproprtionalventils executed Directional valve 1.
- the directional control valve 1 consists of an actuating unit 2 and a valve section 3.
- Such directional control valves 1 are used, for example, for controlling 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 1 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 designed as annular webs 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, pressure medium can be selectively supplied to or removed from the individual pressure chambers of the camshaft adjuster.
- 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 in the circumferential direction of the valve housing 6 extending 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 tergewebe 15 to the openings 1 1 and thus into the interior of the directional control valve 1, located in the pressure medium foreign bodies are kept away from the interior of the directional control valve 1 ,
- Figure 2 shows the detail Z of Figure 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 can abut, for example, on the peripheral surface of the frame element 14 (FIG. 2, left side) or on the corner of the frame element.
- 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 let the filter element 13 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 crimping method. Thus, it is precluded that the filter element 13 rotates in the circumferential direction relative to the valve housing 6 due to the flow forces of the pressure medium
- FIG. 3 shows an alternative embodiment of a hydraulic directional valve 1 in the representation of FIG. 2.
- the side walls 4 are designed to be 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 with a smaller axial extent.
- 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 partial element 16 of the frame element 14 one.
- 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 be seen, which serve as working connections 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)
Abstract
Description
Claims
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 (de) | 2008-12-02 | 2009-11-13 | Hydraulisches wegeventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2373874A1 true EP2373874A1 (de) | 2011-10-12 |
EP2373874B1 EP2373874B1 (de) | 2015-07-22 |
Family
ID=41665948
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09749147.6A Not-in-force EP2373874B1 (de) | 2008-12-02 | 2009-11-13 | Hydraulisches wegeventil |
Country Status (6)
Country | Link |
---|---|
US (1) | US8534322B2 (de) |
EP (1) | EP2373874B1 (de) |
KR (1) | KR101647860B1 (de) |
CN (1) | CN102239314A (de) |
DE (1) | DE102008060069A1 (de) |
WO (1) | WO2010063556A1 (de) |
Families Citing this family (5)
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)
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 |
DE502005004986D1 (de) * | 2004-07-29 | 2008-09-25 | 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 |
-
2008
- 2008-12-02 DE DE200810060069 patent/DE102008060069A1/de not_active Ceased
-
2009
- 2009-11-13 EP EP09749147.6A patent/EP2373874B1/de not_active Not-in-force
- 2009-11-13 CN CN2009801486071A patent/CN102239314A/zh active Pending
- 2009-11-13 US US13/132,345 patent/US8534322B2/en active Active
- 2009-11-13 WO PCT/EP2009/065156 patent/WO2010063556A1/de active Application Filing
- 2009-11-13 KR KR1020117012544A patent/KR101647860B1/ko active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO2010063556A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2010063556A1 (de) | 2010-06-10 |
US20110232781A1 (en) | 2011-09-29 |
KR20110105769A (ko) | 2011-09-27 |
KR101647860B1 (ko) | 2016-08-11 |
US8534322B2 (en) | 2013-09-17 |
DE102008060069A1 (de) | 2010-06-10 |
EP2373874B1 (de) | 2015-07-22 |
CN102239314A (zh) | 2011-11-09 |
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