WO2004036329A2 - Soupape de regulation de pression - Google Patents

Soupape de regulation de pression Download PDF

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Publication number
WO2004036329A2
WO2004036329A2 PCT/EP2003/011278 EP0311278W WO2004036329A2 WO 2004036329 A2 WO2004036329 A2 WO 2004036329A2 EP 0311278 W EP0311278 W EP 0311278W WO 2004036329 A2 WO2004036329 A2 WO 2004036329A2
Authority
WO
WIPO (PCT)
Prior art keywords
armature
pressure control
control valve
pressure
magnet
Prior art date
Application number
PCT/EP2003/011278
Other languages
German (de)
English (en)
Other versions
WO2004036329A3 (fr
Inventor
Uwe RÜHRINGER
Original Assignee
Zf Friedrichshafen Ag
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 Zf Friedrichshafen Ag filed Critical Zf Friedrichshafen Ag
Publication of WO2004036329A2 publication Critical patent/WO2004036329A2/fr
Publication of WO2004036329A3 publication Critical patent/WO2004036329A3/fr

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/20—Control of fluid pressure characterised by the use of electric means
    • G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
    • G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
    • G05D16/2022—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means actuated by a proportional solenoid

Definitions

  • the present invention relates to an electrically controlled pressure control valve, in particular for the automatic transmission of motor vehicles, with a valve housing with inlet and outlet openings, with a control element and with a magnet which has a magnet core, an armature rod and a magnet coil.
  • Valves of this type are widely known from the prior art; for example, they are used as pilot valves for actuating clutches in automatic motor vehicle transmissions. In such transmissions, the main hydraulic pressure is approximately 10 bar or more.
  • Main pressure is usually reduced by a pressure reducing valve to a pilot pressure of approx. 5 bar, with which the pressure control valve, e.g. is designed as a proportional valve, is acted upon.
  • a safety overpressure which corresponds approximately to the system pressure, is usually applied to the clutch cylinder and maintained by additional holding valves. This means that three valves, namely a proportional pressure control valve, a pressure reducing valve and a pressure maintaining valve are required to operate a clutch in an automatic transmission.
  • Pressure control valves have also been proposed which fulfill all of the above-mentioned functions and which are simple in construction.
  • a proportional pressure control valve which serves as a pilot valve and is equipped with a pressure reducing and a pressure maintenance function is described in DE A 199 04 901.
  • a proportional magnet is provided which has an almost constant magnetic force in its working area.
  • the pressure control valve has a valve housing, a control element for opening and closing the valve seat and / or throttle gap and an armature rod for connecting the control element to a proportional magnet which has a magnetic core, a magnet armature and a magnet coil, the magnet armature in the direction of the Anchor axis can be moved back and forth between two end positions.
  • the hydraulic pump of a transmission usually generates strong pulsations that are transmitted to all moving components in the transmission. These hydraulic pulsations are also exposed to electromagnetic pressure control valves, the armature of which is set in vibration. This has a disruptive effect, in particular, in that a pressure generated by the vibrations can be transmitted to the couplings and causes them to jerky operation.
  • electromagnetic pressure regulators are often provided with damping chambers which dampen the axial movement of an armature, which is surrounded by a magnet coil and a core, which generates a magnetic field when current is supplied, which exerts the force to move the armature.
  • Pressure regulating valves found that a pressure column of inflowing oil exerts force on a plunger that is fixedly or loosely connected to the armature, the armature being connected to the Force from the electromagnetic field counteracts the pressure force of the oil pressure columns.
  • an oil-filled damping chamber with an adjusting device at the end of the armature, which is opposite the tappet.
  • the armature in these known pressure regulating valves is usually mounted in an armature space filled with oil, which is located between two radial bearings of the armature.
  • the armature During an axial movement, the armature performs lifting work and displaces the amount of oil in the armature space.
  • the oil escapes within the armature space along a gap on the circumference of the armature, and the armature thus exerts a kind of pumping action on the oil in the armature space.
  • a constant exchange of the oil quantity in the armature space with the gear oil is possible along the armature, which is usually supported with an oil-permeable radial guide.
  • a pressure regulator for electrohydraulic transmission controls was proposed in DE A 196 06 318, which as a seat pressure regulator with a solenoid coil and a core is configured, which surrounds an armature axially displaceable by the force of a magnet in an armature space.
  • the anchor is supported with a front and a rear bearing.
  • Pressure regulator on a plunger which is connected at one end to an end face of the armature in the region of its front bearing or loosely adjoins this and on his the other end is mounted in a closing part for an oil flow hole and is guided through a tappet guide.
  • the anchor space is divided into two damping volumes by the anchor.
  • An oil-filled damping chamber is formed on its side facing away from the tappet between an adjusting device and the rear bearing of the armature.
  • the closing part has a larger diameter than the plunger and between the pre-mounting of the armature and the plunger guide a damping space filled with oil is formed, which is connected to the armature space via a relief bore.
  • damping measures are good filling of the pressure control valve, i.e. avoiding air influences, optimizing the flow in the hydraulic circuit, minimizing the secondary air gap on the armature or magnetic circuit and hydraulic damping of the magnetic circuit.
  • the electrical pressure control valves have two opposing tasks to perform, namely on the one hand reacting very quickly to changes in current (step response times) and on the other hand not reacting to disturbances such as electrical or hydraulic disturbances. This means with others
  • valve should be as undamped as possible with a view to achieving short step response times, but should be well damped with regard to a disturbance variable, so that the disturbance has no influence on the manipulated variable, i. H. the hydraulic pressure.
  • the object of the present invention is to propose an electrical pressure control valve, on the one hand Current changes react quickly and when a disturbance variable is applied, the fault is processed without influencing the manipulated variable.
  • Pressure control valve therefore provides that the damping is not only realized via the outer diameter of the armature and the bearings of the armature, but that the armature rod is provided with a centrally arranged longitudinal bore into which an additional component, in particular a pin with play, is immersed.
  • an additional component in particular a pin with play
  • This immersed pin is advantageously fastened to the sealing plug which is present in all known pressure control valves, in the form of an adjusting screw or an adjusting body.
  • the counter surface can be realized in the bore by simply extending the adjustment body.
  • the single figure shows an axial section through an electrically controlled pressure control valve of a known type, with 1 a control element, 2 the valve housing, 3 the magnet, 4 the magnet coil, 5 the armature rod, 6 the armature axis, and 9 Adjustment body, 10 with a plug and 11 with a compression spring are designated.
  • a centrally arranged longitudinal bore 7 is provided in the anchor rod 5, into which a component 8 in the form of a pin is immersed with play.
  • This pin 8 immersed in the bore 7 changes the effective lengths of the oil friction surface, which can be made variable by changing the diameter and the length of the bore 7 and the pin 8, so that the oil friction surface can be enlarged by several factors.
  • the sealing plug 10 present in each pressure control valve can have the shape of an adjusting screw or an adjusting body, the counter surface in the bore 7 being able to be realized when the adjusting body is extended. reference numeral

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

L'invention concerne une soupape de régulation de pression à commande électrique. Cette soupape comprend un corps dans lequel sont ménagées des ouvertures d'admission et d'évacuation, ainsi qu'un élément de commande et un aimant qui comporte un noyau, un induit et une bobine magnétique. Selon l'invention, cet induit (5) comprend un évidement longitudinal central (7) dans lequel une tige (8) s'engage avec un certain jeu, une extrémité de cette tige étant portée par un élément d'obturation (10).
PCT/EP2003/011278 2002-10-16 2003-10-11 Soupape de regulation de pression WO2004036329A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10248181.4 2002-10-16
DE10248181A DE10248181A1 (de) 2002-10-16 2002-10-16 Druckregelventil

Publications (2)

Publication Number Publication Date
WO2004036329A2 true WO2004036329A2 (fr) 2004-04-29
WO2004036329A3 WO2004036329A3 (fr) 2004-07-01

Family

ID=32049309

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/011278 WO2004036329A2 (fr) 2002-10-16 2003-10-11 Soupape de regulation de pression

Country Status (2)

Country Link
DE (1) DE10248181A1 (fr)
WO (1) WO2004036329A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2444653A3 (fr) * 2010-10-21 2014-05-21 Kendrion (Villingen) GmbH Soupape de réglage à haute pression

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10343843A1 (de) 2003-09-23 2005-04-28 Zahnradfabrik Friedrichshafen Druckregelventil
DE102005010693A1 (de) * 2005-03-09 2006-09-14 Zf Friedrichshafen Ag Proportional-Druckregelventil mit Drucksprung in seiner p/l-Kennlinie
EP2528070A3 (fr) * 2011-05-27 2017-05-10 SVM Schultz Verwaltungs-GmbH & Co. KG Électroaimant avec cheville d'ajustage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1486919A (fr) * 1965-07-24 1967-06-30 Danfoss As Perfectionnements apportés aux vannes électromagnétiques pour gaz
DE4425843A1 (de) * 1994-07-06 1996-01-11 Rexroth Mannesmann Gmbh Druckbegrenzungs- oder Druckregelventil, das insbesondere elektromagnetisch betätigbar ist
US5716038A (en) * 1992-08-13 1998-02-10 Aztec Developments Limited Proportional flow control valve
FR2773602A1 (fr) * 1998-01-13 1999-07-16 Bitron Ind Espana Electrovanne modulatrice haute pression
US20020053652A1 (en) * 1999-02-19 2002-05-09 Paul W. Freisinger Extended range proportional valve

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1742102U (de) * 1955-07-15 1957-03-28 Wilhelm Binder K G Maschinen U Gleichstrom-hubmagnet.
DE1283060B (de) * 1965-11-04 1968-11-14 Danfoss As Magnetventil fuer Gase
DE1945805A1 (de) * 1969-09-05 1971-03-25 Auergesellschaft Gmbh Schlauchpumpe
DE19739007A1 (de) * 1997-09-06 1999-03-11 Kromschroeder Ag G Magnetventil mit einer hydraulischen Dämpfung
DE10006784A1 (de) * 2000-02-18 2001-08-23 Bosch Gmbh Robert Elektromagnet zur Betätigung des Stellglieds eines Ventils

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1486919A (fr) * 1965-07-24 1967-06-30 Danfoss As Perfectionnements apportés aux vannes électromagnétiques pour gaz
US5716038A (en) * 1992-08-13 1998-02-10 Aztec Developments Limited Proportional flow control valve
DE4425843A1 (de) * 1994-07-06 1996-01-11 Rexroth Mannesmann Gmbh Druckbegrenzungs- oder Druckregelventil, das insbesondere elektromagnetisch betätigbar ist
FR2773602A1 (fr) * 1998-01-13 1999-07-16 Bitron Ind Espana Electrovanne modulatrice haute pression
US20020053652A1 (en) * 1999-02-19 2002-05-09 Paul W. Freisinger Extended range proportional valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2444653A3 (fr) * 2010-10-21 2014-05-21 Kendrion (Villingen) GmbH Soupape de réglage à haute pression

Also Published As

Publication number Publication date
WO2004036329A3 (fr) 2004-07-01
DE10248181A1 (de) 2004-04-29

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