EP2539554B1 - Proportionalventil, insbesondere für einen nockenwellenversteller - Google Patents

Proportionalventil, insbesondere für einen nockenwellenversteller Download PDF

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Publication number
EP2539554B1
EP2539554B1 EP11701505.7A EP11701505A EP2539554B1 EP 2539554 B1 EP2539554 B1 EP 2539554B1 EP 11701505 A EP11701505 A EP 11701505A EP 2539554 B1 EP2539554 B1 EP 2539554B1
Authority
EP
European Patent Office
Prior art keywords
valve
proportional valve
check valve
sleeve
guide sleeve
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
EP11701505.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2539554A1 (de
Inventor
Jens Hoppe
Stefan Konias
Yi Wang
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 EP2539554A1 publication Critical patent/EP2539554A1/de
Application granted granted Critical
Publication of EP2539554B1 publication Critical patent/EP2539554B1/de
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
    • F01L1/344—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 changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • 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
    • F01L1/344—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 changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—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 changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/34423—Details relating to the hydraulic feeding circuit
    • F01L2001/34426—Oil control valves
    • 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
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • 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

Definitions

  • the invention relates to a proportional valve with a piston guide sleeve and a valve piston movable in the piston guide sleeve and with a arranged in a pressure medium inlet to the proportional valve check valve and a mounting method for such a proportional valve.
  • Such a proportional valve is out of DE 10 2005 060 111 A1 known.
  • This proportional valve is designed for a camshaft adjuster for an internal combustion engine and integrated in a central screw for fastening the camshaft adjuster to a camshaft.
  • the proportional valve to a check valve, which is designed spring-disk-shaped and is arranged in an annular pressure medium inlet laterally adjacent to the proportional valve on the outer circumference of the central screw.
  • check valve is out of the EP 1 291 563 A2 known.
  • This check valve is designed for a particular designed as a cartridge valve proportional valve and integrated into this.
  • this check valve is used in the region of a pressure medium inlet in a recess provided on the inner circumference of the piston guide sleeve prior to assembly of the valve piston.
  • the assembly effort of such in the piston guide sleeve used check valve considerably.
  • the stroke of this formed as a spring ring check valve is not limited to the inside and thus the spring ring can collide with the valve piston. Such a collision can lead to failure of the proportional valve.
  • the invention is based on the object of specifying a proportional valve, in particular for a camshaft adjuster of an internal combustion engine, in which the adaptation of the non-return valve to the proportional valve is improved compared to the prior art.
  • the check valve is arranged in a ring gap surrounding the piston guide sleeve in the region of the pressure medium inlet.
  • the check valve is on the one hand integrated into the actual proportional valve, so that the check valve does not have to be installed as a separate component during assembly of the proportional valve.
  • the check valve is arranged outside the piston guide sleeve, that the check valve can not be moved radially against the valve piston.
  • the proportional valve thus formed is otherwise preferably used for camshaft adjustment of an internal combustion engine.
  • the annular gap is delimited by an encapsulation that at least partially surrounds the piston guide sleeve and a receiving sleeve that encompasses at least a portion of the encapsulation.
  • the receiving sleeve at its axial end to a portion of the annular gap forming receiving gap, in which the check valve is used.
  • This embodiment allows a particularly simple and reliable mounting of the check valve by this is introduced without the use of tools in the end-side receiving gap and then the piston guide sleeve is inserted into the receiving sleeve.
  • This refinement also reduces the machining effort on the components, in particular the piston guide sleeve.
  • the piston guide sleeve is unprocessed in the embodiment according to the invention for the formation of the annular gap.
  • the provided with the encapsulation piston guide sleeve is integrally connected to the receiving sleeve.
  • the check valve is inserted into a partial region of the annular gap forming receiving gap of the receiving sleeve, and then provided with the encapsulation piston guide sleeve inserted into the receiving sleeve and connected thereto, for example, materially.
  • a non-positive or positive connection may be provided.
  • the cohesive connection can be realized for example by ultrasonic welding or gluing.
  • a frictional connection is achieved, for example, by pressing the piston guide sleeve provided with the extrusion coating into the receiving sleeve, while a positive connection can be achieved by a snap connection.
  • the check valve is designed as a slotted spring sleeve in the axial direction, which in turn can be made in an advantageous development of a metallic material, such as sheet metal or stainless steel.
  • the encapsulation forms on its outer circumferential surface a radially acting in the open position of the check valve stop and the receiving sleeve on its inner lateral surface acting radially in the closing direction of the check valve stop.
  • the check valve In the unactuated state, the check valve is powerless or slightly biased to the inner circumferential surface of the receiving sleeve. If pressure medium fluid, in particular hydraulic fluid, flows radially from the outside into the adjustment space of the proportional valve, then the check valve is pressed by the pressure of the pressure medium fluid against the outer circumferential surface of the extrusion coating and opens the inlet. If pressure oscillations occur opposite to the flow, the check valve closes against the radial pressure medium inlet of the receiving sleeve.
  • This embodiment offers the advantage that a reliable function is ensured. In any case, it is ensured that a collision of the check valve with the valve piston is excluded.
  • the proportional valve 1 according to the invention is provided for a camshaft adjuster of an internal combustion engine.
  • the camshaft driven by the camshaft adjuster in an internal combustion engine serves to open the gas exchange valves serving for pushing out the combusted gases and sucking in the fresh gases against the force of valve springs mounted on each gas exchange valve.
  • Rigid control times for the gas exchange valves represent a compromise for the design with regard to the achievable mean pressure maximum or torque maximum and its locations in the usable speed range and the achievable power at rated speed.
  • the proportional valve 1 has according to FIG. 1 an electromagnetic drive part 2, the actuating piston 6 with a valve piston 3 (FIG. FIGS. 2, 3 . 4 ) cooperates in the proportional valve 1.
  • the actuating piston 6 of the control part 2 displaces the valve piston 3 in a piston guide sleeve 4 of the proportional valve 1 between two end positions and thereby causes a controlled adjustment of the timing on the camshaft adjuster.
  • the proportional valve 1 is in addition to the control part 2 of the piston guide sleeve 4 (see the detailed illustration FIGS. 2 to 4 ), in the range of a pressure medium inlet 10 and a working port 11b with an encapsulation 5 is provided in particular of a plastic material.
  • the valve piston 3 of the drive part 2 by means of the actuating piston 6 (FIG. FIGS. 2 and 3 ) displaceable against the force of a valve spring 7.
  • the provided with the encapsulation 5 piston guide sleeve 4 is inserted into a receiving sleeve 8 and at its end remote from the control part 2 end with this via a snap connection 9 (Fig. FIG. 2, 3 ) accurately positioned.
  • the proportional valve 1 has four hydraulic fluid connections, namely a pressure medium inlet 10 connected to a pump, two working connections 11 a, 11 b and a return connection 11 c connected to a tank, which leads through the interior of the hollow cylindrical valve piston 3.
  • the hydraulic fluid which is in particular the engine oil of the internal combustion engine
  • the proportional valve 1 and fed through corresponding passages in the receiving sleeve 8, the encapsulation 5 and depending on the position of the valve piston 3 via a control piston 12a and 12b as part of the valve piston 3 limited annulus 12 to the working ports 11 a, 11 b out.
  • a connection to the return connection 11 c can be produced via a connection opening 16 in the valve piston 3.
  • the working ports 11 a, 11 b ring filter 17 are provided. They are intended to prevent the ingress of dirt into the proportional valve 1.
  • this proportional valve 1 designed according to the invention, a defined adjustment of the camshaft with respect to a toothed-belt-operated or chain-operated drive wheel, for example, is achieved. This is achieved for example by one or more associated with the camshaft adjusting piston of the camshaft adjuster 1, the / by in opposite Verstellkolbenschreib, with the working ports 11 a, 11 b in combination are rotated by introduced hydraulic fluid relative to the drive wheel / be.
  • a check valve 13 is inserted, which in a closed position on the Receiving sleeve 8 ( Figure 2) and in an open position on the encapsulation 5 FIG. 3 ) is present.
  • the piston guide sleeve 4, the encapsulation 5 and the receiving sleeve 8 form an annular gap 14 (FIG. FIG. 4 ), in which the check valve 13 is arranged.
  • the receiving sleeve 8 has a nose 15 which cooperates with the encapsulation 5.
  • This nose 15 causes the check valve 13 can not rotate within the annular gap 14. This is a malfunction is excluded. Furthermore, it is ensured by the inventive design that the check valve 13 in the open position with the valve piston 3 can not come into contact.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Magnetically Actuated Valves (AREA)
EP11701505.7A 2010-02-26 2011-01-25 Proportionalventil, insbesondere für einen nockenwellenversteller Not-in-force EP2539554B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010009401 DE102010009401A1 (de) 2010-02-26 2010-02-26 Proportionalventil, insbesondere für einen Nockenwellenversteller
PCT/EP2011/050977 WO2011104058A1 (de) 2010-02-26 2011-01-25 Proportionalventil, insbesondere für einen nockenwellenversteller

Publications (2)

Publication Number Publication Date
EP2539554A1 EP2539554A1 (de) 2013-01-02
EP2539554B1 true EP2539554B1 (de) 2017-09-06

Family

ID=43842702

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11701505.7A Not-in-force EP2539554B1 (de) 2010-02-26 2011-01-25 Proportionalventil, insbesondere für einen nockenwellenversteller

Country Status (7)

Country Link
US (1) US20120312396A1 (ko)
EP (1) EP2539554B1 (ko)
KR (1) KR20130008013A (ko)
CN (1) CN102770627B (ko)
BR (1) BR112012021449A2 (ko)
DE (1) DE102010009401A1 (ko)
WO (1) WO2011104058A1 (ko)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012214495B3 (de) * 2012-08-14 2013-12-24 Zf Friedrichshafen Ag Vorrichtung zur Gewährleistung der Ölversorgung des Sekundärkreises eines Getriebes eines Hybridantriebsstrangs eines Kraftfahrzeugs, umfassend eine elektrisch betriebene Zusatzölpumpe
DE102014216175A1 (de) 2014-08-14 2016-02-18 Schaeffler Technologies AG & Co. KG Rückschlagventil für ein Steuerventil eines Nockenwellenverstellers
US11111827B2 (en) 2016-10-06 2021-09-07 Borgwarner, Inc. Double flapper valve for a variable cam timing system
CN112682122B (zh) 2016-10-06 2022-09-09 博格华纳公司 用于可变凸轮正时系统的双瓣阀
US10633837B2 (en) * 2017-10-18 2020-04-28 Chuan Wei Metal Co., Ltd. Structural improvement of piston set for use in hydrant
CN109854322A (zh) * 2019-04-01 2019-06-07 绵阳富临精工机械股份有限公司 一种中心滑阀结构

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Publication number Priority date Publication date Assignee Title
FR2396226A1 (fr) * 1977-06-27 1979-01-26 Deere & Co Valve de commande
US6029703A (en) * 1998-12-18 2000-02-29 Borg-Warner Automotive, Inc. Pressure solenoid control valve with flux shunt
DE10143433B4 (de) 2001-09-05 2013-09-26 Hilite Germany Gmbh Proportionalventil
GB0303571D0 (en) * 2003-02-17 2003-03-19 Delphi Tech Inc Oil flow control valve for a cam phaser
DE10319831A1 (de) * 2003-05-03 2004-11-18 Hydraulik-Ring Gmbh Buchse für ein Hydraulikventil
DE102004038252A1 (de) * 2004-05-14 2005-12-15 Ina-Schaeffler Kg Steuerventil für eine Vorrichtung zur Veränderung der Steuerzeiten einer Brennkraftmaschine
DE102005013085B3 (de) * 2005-03-18 2006-06-01 Hydraulik-Ring Gmbh Ventil mit Rückschlagventil
DE102005041393A1 (de) * 2005-09-01 2007-03-08 Schaeffler Kg Steuerventil für eine Vorrichtung zur Veränderung der Steuerzeiten einer Brennkraftmaschine
DE102005047641A1 (de) * 2005-10-05 2007-04-12 Schaeffler Kg Steuerventil für einen Nockenwellenversteller
DE102005060111A1 (de) 2005-12-16 2007-07-05 Schaeffler Kg Nockenwellenverstellerzuleitung
DE102006022402A1 (de) * 2006-05-13 2007-12-06 Schaeffler Kg Steuerventil für einen Nockenwellenversteller
DE102006031595A1 (de) * 2006-07-08 2008-02-21 Schaeffler Kg Hydraulisches Spannsystem
GB0618648D0 (en) * 2006-09-22 2006-11-01 Delphi Tech Inc Oil control valve
US8151824B2 (en) * 2007-04-05 2012-04-10 Mac Valves, Inc. Balanced solenoid valve

Non-Patent Citations (1)

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Title
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Also Published As

Publication number Publication date
US20120312396A1 (en) 2012-12-13
CN102770627A (zh) 2012-11-07
BR112012021449A2 (pt) 2016-05-31
KR20130008013A (ko) 2013-01-21
CN102770627B (zh) 2015-05-06
EP2539554A1 (de) 2013-01-02
DE102010009401A1 (de) 2011-09-01
WO2011104058A1 (de) 2011-09-01

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