WO2008025808A1 - Soupape de commande de graissage - Google Patents

Soupape de commande de graissage Download PDF

Info

Publication number
WO2008025808A1
WO2008025808A1 PCT/EP2007/059015 EP2007059015W WO2008025808A1 WO 2008025808 A1 WO2008025808 A1 WO 2008025808A1 EP 2007059015 W EP2007059015 W EP 2007059015W WO 2008025808 A1 WO2008025808 A1 WO 2008025808A1
Authority
WO
WIPO (PCT)
Prior art keywords
resilient ring
filter means
oil control
control valve
check valve
Prior art date
Application number
PCT/EP2007/059015
Other languages
English (en)
Inventor
Nordine Hamdi
Axel Berndorfer
Original Assignee
Delphi Technologies Inc.
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 Delphi Technologies Inc. filed Critical Delphi Technologies Inc.
Publication of WO2008025808A1 publication Critical patent/WO2008025808A1/fr

Links

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
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/141—Check valves with flexible valve members the closure elements not being fixed to the valve body
    • F16K15/142—Check valves with flexible valve members the closure elements not being fixed to the valve body the closure elements being shaped as solids of revolution, e.g. toroidal or cylindrical rings
    • 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
    • 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
    • F01L1/34—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
    • 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
    • F01L2001/3443—Solenoid driven oil control valves
    • 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
    • F01L2001/34436—Features or method for avoiding malfunction due to foreign matters in oil
    • F01L2001/3444—Oil filters

Definitions

  • the present invention relates to an oil control valve, particularly, but not exclusively, an oil control valve used to control the flow of oil to ports of an automobile variable cam phaser.
  • oil control valves are commonly used to control flow of oil.
  • OCVs oil control valves
  • Typical check valves suitable for this purpose include ball and seat or ring actuated check valves.
  • a typical ring actuated check valve is described in German patent publication no. DE 102005013085 B3 to Hydraulik-Ring GmbH.
  • a filter is normally provided in line with the OCV ⁇ typically in the cylinder head).
  • a disadvantage of having a discrete OCV, filter and check valve is that the cylinder head machining required can be relatively extensive since the check valve is normally actually provided on the cylinder head. Furthermore, servicing of the various individual components can be relatively difficult.
  • an oil control valve having an integrated check valve arrangement, the check valve arrangement comprising a valve seat provided with at least an aperture there through, a resilient ring of a lesser depth than the or each aperture, filter means around the resilient ring, the filter means comprising a perforated area corresponding to the resilient ring depth wherein the resilient ring is actuable, upon selected pressure imbalance in fluid present in the check valve, between an open position in which the resilient ring abuts against a seat portion of the check valve in order to allow fluid to flow through the filter means, and a closed position in which the resilient ring abuts against the inner circumference of the filter means thereby closing said perforations in order to substantially prevent flow of fluid there through.
  • the resilient ring comprises an annular band of material which forms a partial ring having a break between each end of the partial ring. More preferably, the resilient ring further comprises a portion of narrowed dimension in order to form a relatively weak portion of the ring such that a hinge function is provided.
  • valve seat portion of the check valve housing is provided with annular locating ribs at either end thereof in order to locate the resilient ring on the valve seat portion.
  • the annular locating ribs are provided with a recess or protrusion adapted to co-operate with a corresponding recess or protrusion on the resilient ring. This prevents the check valve arrangement from freely rotating around the valve seat.
  • the filter means comprises a thin film screen member in the form of an annular band of material where the perforated area is provided around said band of material. More preferably, the perforated area corresponds to the resilient ring depth.
  • the filter means and resilient ring are moveably secured to one another. More preferably, the filter means and resilient ring are joined by a weld, such as a laser weid, at a point location in order to moveably secure the filter means to the resilient ring. Preferably, the point location is located at or toward the narrowed dimension of the resilient ring.
  • the valve seat comprises a series of apertures spaced around the circumference of the valve seat.
  • four apertures are provided, each equally spaced apart from one another around the circumference of the valve seat.
  • the resilient ring and check valve seat allow flow of fluid in a first direction due to the pressure of fluid outside the check valve acting on the outer diameter of the resilient ring in order to cause the resilient ring to decrease in diameter such that fluid may flow through the filter means, around the resilient ring and through a portion of the apertures not obstructed by the resilient ring.
  • the resilient ring and filter means further substantially prevent flow in a second direction due to the resilience of the resilient ring and pressure balance between the inside and outside of the check valve which causes the resilient ring to increase in diameter until it abuts against the inner diameter of the filter means perforated area in order to close the perforations in the filter means to fluid flow.
  • Fig. 1 is a perspective illustration of the oil control valve having a check valve according to the present invention
  • Fig. 2 is a cross sectional view of the check valve portion of the oil control vaive of Fig. 1 taken through the line A-A where the check valve is in a closed position
  • Fig. 3 is a cross sectional view of the check valve portion of the oil control valve of Fig. 1 taken through the line A-A where the check valve is in an open position;
  • Fig. 4 is a perspective illustration of the check valve housing separated from the oil control valve and without the resilient ring and filter means
  • Fig. 5 is a perspective illustration of the check vaive housing separated from the oil control valve with the resilient ring and filter means wrapped there around;
  • Fig. 6 is a schematic illustration of the arrangement of the resilient ring member relative to the filter means.
  • Fig. 7 is a perspective illustration of the resilient ring and filter means removed from the check valve.
  • Fig. 1 shows an oil control valve (OCV) 10 for mounting in the location of a variable cam phaser via a connection bracket 14.
  • OCV oil control valve
  • the OCV 10 is provided with a check valve housing 12 at its lower end.
  • the check valve housing 12 has a pair of annular locating ribs 16 between which a valve seat of the OCV, in the form of a cylindrical barrel, is provided.
  • the valve seat has a number of apertures A spaced there around, in the example shown a series of four apertures A are provided. This is best seen in Figs. 2 to 4.
  • Annular ribs 16 have a pair of opposing recesses 30 and corresponding protrusions extending from the resilient ring 20 and filter means 22. These co-operate to avoid free rotation around the check valve housing 12.
  • a flow actuated valve arrangement 18 comprising a resilient ring 20 and filter means 22 is placed around the valve seat of the OCV 10.
  • the resilient ring 20 and filter means 22 are joined to one another during manufacture by point welding W.
  • the resilient ring is preferably biased toward a closed position where it has a relatively large diameter and abuts against the inner circumference of the filter means when no fluid pressure imbalance is present.
  • the filter means 22 comprises a thin film screen filter having an area of perforations there around.
  • the filter means has a relatively large depth D1 with a band of perforations covering a depth D2 and extending around the filter means 22.
  • the depth D2 roughly corresponds to the depth of the resilient ring 20.
  • a hinge 24 is effectively created on the resilient ring 20 by joining opposite halves of the spring by a portion 24 having a substantially narrower diameter than the rest of the resilient ring. This creates an intentional weakness in the spring at that point which increases it's resilience and allows it to be bent easily in order to assist installation and improve operation when installed on the OCV.
  • the resilient ring 20 extends around the OCV 10 but does not actually join together to form a full circle. Instead, a small gap 28 remains; the purpose of this gap is discussed subsequently.
  • the filter means 22 forms a complete circle which extends all of the way around the valve seat of the OCV 10 in order to ensure proper filtering of oil.
  • the resilient ring has a depth D2 which is relatively shallow compared to the depth D1 of the filter means. The purpose of this is discussed subsequently.
  • the weld point W is aligned such that it is fixed between two of the apertures A, as shown in Fig. 2.
  • the retainer spring 20 and filter means may move ⁇ expand and contract) independently of one another. As represented by arrow F in Fig.
  • the check valve housing 12 provides a flow path there through which allows flow of oil (from outside the check valve housing 12, through the filter means perforated area and into the apertures A (around the gap created between the relatively shallow resilient ring and the relatively large apertures A) but does not allow flow of fluid in the opposite direction from within the check valve housing 12 through the filter means.
  • the mechanics of the check valve 12 which provide this function will become apparent from the subsequent discussion.
  • the valve described therefore has the same ability to control oil flow directions as typical check valves; however, it has the great advantage of allowing the check valve and a filter to be incorporated into the actual OCV body.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)

Abstract

Soupape de commande de graissage (10) avec ensemble de clapet de retenue intégré (12). Cet ensemble de clapet de retenue présente un siège avec des ouvertures périphériques (A), une bague souple (20) disposée à une profondeur plus faible que les ouvertures et un moyen filtrant autour de ladite bague. Le moyen filtrant comporte une zone perforée correspondant à la profondeur de la bague souple et peut se déplacer, en cas de déséquilibre de pression du fluide présent dans le clapet de retenue, entre des positions ouverte et fermée. En position ouverte, la bague souple est en butée contre la partie siège du clapet de retenue et laisse passer le fluide autour du moyen filtrant alors qu'en position ouverte, elle butte contre la circonférence interne du moyen filtrant, ce qui empêche pratiquement le fluide de traverser.
PCT/EP2007/059015 2006-08-29 2007-08-29 Soupape de commande de graissage WO2008025808A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0616966.8 2006-08-29
GB0616966A GB0616966D0 (en) 2006-08-29 2006-08-29 Oil control valve

Publications (1)

Publication Number Publication Date
WO2008025808A1 true WO2008025808A1 (fr) 2008-03-06

Family

ID=37102908

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/059015 WO2008025808A1 (fr) 2006-08-29 2007-08-29 Soupape de commande de graissage

Country Status (2)

Country Link
GB (1) GB0616966D0 (fr)
WO (1) WO2008025808A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011134750A1 (fr) * 2010-04-26 2011-11-03 Schaeffler Technologies Gmbh & Co. Kg Soupape de commande munie d'une lame de ressort incurvée servant de soupape de non-retour
WO2012007240A1 (fr) * 2010-07-12 2012-01-19 Schaeffler Technologies Gmbh & Co. Kg Insert de soupape et soupape comportant un tel insert de soupape
DE102011087664A1 (de) * 2011-12-02 2013-06-06 Continental Automotive Gmbh Ventilanordnung
US10358953B2 (en) 2015-07-20 2019-07-23 Delphia Automotive Systems Luxembourg Sa Valve
WO2020178174A1 (fr) * 2019-03-05 2020-09-10 Grohe Ag Filtre comportant une périphérie variable destiné à une vanne thermostatique

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882891A (en) * 1974-06-19 1975-05-13 Abex Corp Check valve
FR2857720A1 (fr) * 2003-07-16 2005-01-21 Denso Corp Valve de permutation de passages d'huile contenant un filtre a huile
DE102005013085B3 (de) * 2005-03-18 2006-06-01 Hydraulik-Ring Gmbh Ventil mit Rückschlagventil

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882891A (en) * 1974-06-19 1975-05-13 Abex Corp Check valve
FR2857720A1 (fr) * 2003-07-16 2005-01-21 Denso Corp Valve de permutation de passages d'huile contenant un filtre a huile
DE102005013085B3 (de) * 2005-03-18 2006-06-01 Hydraulik-Ring Gmbh Ventil mit Rückschlagventil

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011134750A1 (fr) * 2010-04-26 2011-11-03 Schaeffler Technologies Gmbh & Co. Kg Soupape de commande munie d'une lame de ressort incurvée servant de soupape de non-retour
CN102859128A (zh) * 2010-04-26 2013-01-02 谢夫勒科技股份两合公司 带有用作止回阀的弯曲的弹性带材的控制阀
CN102859128B (zh) * 2010-04-26 2015-07-15 谢夫勒科技股份两合公司 带有用作止回阀的弯曲的弹性带材的控制阀
WO2012007240A1 (fr) * 2010-07-12 2012-01-19 Schaeffler Technologies Gmbh & Co. Kg Insert de soupape et soupape comportant un tel insert de soupape
CN102985643A (zh) * 2010-07-12 2013-03-20 谢夫勒科技股份两合公司 阀插件以及带有这种阀插件的阀
US8967106B2 (en) 2010-07-12 2015-03-03 Schaeffler Technologies AG & Co. KG Valve insert, and valve having a valve insert of this type
CN102985643B (zh) * 2010-07-12 2015-09-23 舍弗勒技术股份两合公司 阀插件以及带有这种阀插件的阀
DE102011087664A1 (de) * 2011-12-02 2013-06-06 Continental Automotive Gmbh Ventilanordnung
DE102011087664B4 (de) * 2011-12-02 2014-03-20 Continental Automotive Gmbh Ventilanordnung
US10358953B2 (en) 2015-07-20 2019-07-23 Delphia Automotive Systems Luxembourg Sa Valve
WO2020178174A1 (fr) * 2019-03-05 2020-09-10 Grohe Ag Filtre comportant une périphérie variable destiné à une vanne thermostatique

Also Published As

Publication number Publication date
GB0616966D0 (en) 2006-10-04

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