EP0317725B1 - Dispositif de commande de soupape champignon - Google Patents

Dispositif de commande de soupape champignon Download PDF

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Publication number
EP0317725B1
EP0317725B1 EP88115424A EP88115424A EP0317725B1 EP 0317725 B1 EP0317725 B1 EP 0317725B1 EP 88115424 A EP88115424 A EP 88115424A EP 88115424 A EP88115424 A EP 88115424A EP 0317725 B1 EP0317725 B1 EP 0317725B1
Authority
EP
European Patent Office
Prior art keywords
armature
valve
poppet valve
disc
central bore
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.)
Expired - Lifetime
Application number
EP88115424A
Other languages
German (de)
English (en)
Other versions
EP0317725A1 (fr
Inventor
Van-Khanh Dipl.-Ing. Tran
Klaus Dipl.-Ing. Schneider
Hans-Joachim Dr. Dipl.-Ing. Esch
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.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche 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 Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of EP0317725A1 publication Critical patent/EP0317725A1/fr
Application granted granted Critical
Publication of EP0317725B1 publication Critical patent/EP0317725B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/14—Tappets; Push rods
    • F01L1/16—Silencing impact; Reducing wear
    • 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
    • F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
    • F01L1/462—Valve return spring arrangements
    • 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
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • 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
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • F01L9/21—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids
    • F01L2009/2105—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids comprising two or more coils
    • F01L2009/2109—The armature being articulated perpendicularly to the coils axes

Definitions

  • the invention relates to a device for actuating a gas exchange poppet valve, which is longitudinally guided in the cylinder head of a reciprocating piston engine, according to the preamble of claim 1.
  • Such an actuator is described in patent application DE-A-36 16 540.9-13.
  • the gas exchange valve is actuated by two electromagnets working against spring force, which are excited alternately and thereby move an armature back and forth that opens and closes the poppet valve.
  • a cylindrical torsion bar spring is used.
  • the torsion bar spring is attached to the cylinder head on one side and non-rotatably connected to one end of a one-arm valve lever on the other side. With its other end, the valve lever articulates on the valve stem of the poppet valve.
  • the armature is attached to the valve lever at a distance from this articulation point.
  • the poppet valve In an actuating device known from EP-A-0 118 591, the poppet valve is moved back and forth against the force of a cylindrical spring by two alternately excited electromagnets.
  • the electromagnets act on an armature attached to the poppet valve, which is arranged coaxially with the armature of the poppet valve together with an armature disk centrally attached to it.
  • the simplest design is when the armature disk is formed from two circular disks and the driving disk is inserted at its parting plane with axial play to the end faces of the disks, which now serve as stop faces. If the armature disk is placed on the upper electromagnet when the poppet valve is closed, the drive disk is then pulled upwards by the electromagnet until the poppet valve closes tightly. To open the poppet valve, the upper electromagnet is switched off and the armature disk is moved downwards by spring force.
  • the anchor contains a central bore filled with hydraulic fluid.
  • a shaft end of the poppet valve is guided in a longitudinally movable manner and is supported by a helical spring which bears against a radial projection of the central bore.
  • the central bore contains a ball check valve above the radial bore.
  • a magnet housing 2 is fastened to the cylinder head 1 of a reciprocating piston engine, in which a first electromagnet 3 and a second electromagnet 4 are fixedly attached at a distance a1 from one another.
  • armature disk 6 fastened to an armature 5, which is held in the end position by the respectively excited electromagnet 3 or 4.
  • the armature 5 is sealed in the magnet housing 2 and guided longitudinally in a bearing 8. At its end protruding from the magnet housing, the armature 5 is provided with a recess 9 into which a fork 11 attached to the end of a valve lever 10 engages. At its other end, the valve lever 10 is designed as a bearing tube 12.
  • the bearing tube 12 is mounted in a bearing block 13 screwed onto the cylinder head 1. The bearing tube 12 or the valve lever 10 is secured against axial displacement by contacting the bearing block 13 at the end.
  • one end of a cylindrical torsion bar spring 14 is fastened in the bearing tube 12.
  • the other end of the torsion bar 14 is provided with a flange 15 and screwed to the cylinder head 1 with screws 16.
  • a camshaft 17 is mounted in the cylinder head 1 below the valve lever 10, the holding cam 18 of which is pivoted up when the engine is at a standstill, thus blocking the valve lever 10 and tensioning the torsion bar spring 14.
  • a stepping motor 19 is used to pivot the camshaft 17 and is controlled by a control unit 20 as a function of sensor signals from the motor.
  • a driving plate 21 is screwed, which is inserted at the parting plane 22 between the upper part 6 'and lower part 6' of the armature plate 6. After inserting the drive plate 21, the two parts 6 'and 6 ⁇ are welded together.
  • the driving plate 21, like the armature plate 6, is made of magnetizable material. As can be seen from Fig. 3, it has a distance a2 to the upper part 6 'of the armature disk 6.
  • the armature disk 6 is placed on the end face of the electromagnet 3 by the torsion bar spring after the electromagnet 4 has been switched off. Then this electromagnet 3 attracts the drive plate 21 and moves it to the upper part 6 'of the armature plate 6; the plate 23 is placed close to the seat ring 24.
  • the armature disk 6 is again moved as a whole towards the lower electromagnet 4 and then the driving disk 21 is moved relative to it.
  • the torsion bar 14 is rotated by the same angular path when opening and closing the poppet valve 7 so that its force-displacement curve is linear around the neutral zero position in both directions.
  • this spring return and energy storage in the desired manner works completely free of play by means of the torsion bar spring 14.
  • the armature 5 contains a hydraulic damping device acting on the shaft end of the plate valve 7.
  • This consists of a piston 25 which is longitudinally guided in an oil-filled central bore 26 of the armature 5 and in a pin 27 of the armature disk 6 fitted in the central bore 26.
  • the piston 25 is damped by the hydraulic oil and clamped by a helical spring 28 which is supported on a radial projection 29 of the central bore 26.
  • a further helical spring 30 and a valve ball 31 resting on a seat of the central bore 26 are arranged as a resilient check valve.
  • the arrangement of the driving plate 21 according to the invention and the damping device located centrally in the armature 5 can also be used for an electromagnetic valve actuation in which two coil springs are used for energy storage instead of a torsion bar spring.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Electrically Driven Valve-Operating Means (AREA)

Claims (8)

  1. Dispositif destiné à actionner une soupape champignon de commande des gaz, guidée longitudinalement dans la culasse d'un moteur à piston alternatif, comportant deux électro-aimants qui sont excités périodiquement, alternativement et déplacent ainsi, dans un mouvement de va-et-vient, à l'encontre de la force d'une barre de torsion cylindrique, un induit qui ouvre et ferme la soupape champignon, la barre de torsion étant maintenue fixe en rotation sur l'un de ses côtés, sur la culasse et étant reliée fixe en rotation, sur son autre côté, à un culbuteur à un bras, qui est relié articulé à l'induit, caractérisé en ce que sur l'induit (5), le culbuteur (10) est articulé à son extrémité libre et en ce que l'induit (5) avec le disque d'induit (6) fixé au centre de celui-ci, est coaxial à la tige de la soupape champignon (7) et en ce qu'à l'extrémité de la tige de la soupape champignon (7) est fixé un disque d'entraînement (21) magnétisable qui est placé mobile longitudinalement sur le disque d'induit (6), avec un jeu axial (a2), de manière qu'il soit alternativement attiré par les électro-aimants (3, 4).
  2. Dispositif selon la revendication 1, caractérisé en ce que le disque d'induit (6) est constitué de deux parties (6, 6') à peu près de mêmes dimensions, s'appliquant l'une contre l'autre en un point de séparation (22) et en ce que le disque d'entraînement (21) est placé sur le plan de séparation (22).
  3. Dispositif selon la revendication 1, caractérisé en ce qu'un dispositif d'amortissement hydraulique, agissant sur l'extrémité de la tige de la soupape champignon (7), est logé dans un alésage central (26) de l'induit (5), rempli d'un liquide hydraulique.
  4. Dispositif selon les revendications 1 et 3, caractérisé en ce que le dispositif d'amortissement hydraulique est constitué par un piston (25) s'appliquant frontalement sur l'extrémité de la tige de la soupape champignon (7), guidé longitudinalement dans l'alésage central (26) et par un ressort hélicoïdal (28), agissant sur l'autre côté frontal du piston (25), prenant appui contre une partie saillante (29) radiale de l'alésage central (26).
  5. Dispositif selon la revendication 4, caractérisé en ce que sur l'autre côté de la partie saillante (29) radiale prend appui un deuxième ressort hélicoïdal (30) qui applique une bille de soupape (31) contre un siège de soupape formé dans l'alésage central (26).
  6. Dispositif selon la revendication 1, caractérisé en ce qu'il est placé, au-dessous du culbuteur (10), à peu près au centre de sa longueur de bras, une came de retenue (18) tournante qui, après coupure du moteur, soutient le culbuteur (10) et maintient ainsi la soupape champignon (7) en position fermée.
  7. Dispositif selon l'une des revendications 1, 2 ou 6 caractérisé en ce que l'induit (5) est réalisé dans un matériau non magnétisable, le disque d'induit (6) et le disque d'entraînement (21) dans un matériau bien magnétisable.
  8. Dispositif selon la revendication 7, caractérisé en ce que le disque d'induit (6) est ajusté, par un tenon (27), dans l'alésage central (26) de l'induit (5) et est assemblé à celui-ci, par collage, soudage ou vissage.
EP88115424A 1987-11-25 1988-09-21 Dispositif de commande de soupape champignon Expired - Lifetime EP0317725B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873739891 DE3739891A1 (de) 1987-11-25 1987-11-25 Vorrichtung zum betaetigen eines gaswechsel-tellerventils
DE3739891 1987-11-25

Publications (2)

Publication Number Publication Date
EP0317725A1 EP0317725A1 (fr) 1989-05-31
EP0317725B1 true EP0317725B1 (fr) 1992-01-22

Family

ID=6341207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88115424A Expired - Lifetime EP0317725B1 (fr) 1987-11-25 1988-09-21 Dispositif de commande de soupape champignon

Country Status (4)

Country Link
US (1) US4867111A (fr)
EP (1) EP0317725B1 (fr)
DE (2) DE3739891A1 (fr)
ES (1) ES2028222T3 (fr)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2639587B2 (ja) * 1989-03-30 1997-08-13 株式会社いすゞセラミックス研究所 バルブのステッピング駆動装置
US5199459A (en) * 1991-05-08 1993-04-06 Valve Tech, Inc. Dual series valve
US5150879A (en) * 1991-05-08 1992-09-29 Valve Tech, Inc. Thruster valve
US5161494A (en) * 1992-01-15 1992-11-10 Brown Jr John N Electromagnetic valve actuator
DE19607019A1 (de) * 1996-02-24 1997-08-28 Daimler Benz Ag Vorrichtung zur elektromagnetischen Betätigung eines Gaswechselventiles für Verbrennungsmotoren
US5647311A (en) * 1996-11-12 1997-07-15 Ford Global Technologies, Inc. Electromechanically actuated valve with multiple lifts and soft landing
DE19712060A1 (de) * 1997-03-24 1998-10-01 Brauneweil Markus Ventil für einen Verbrennungsmotor E4
JP3831104B2 (ja) * 1997-05-13 2006-10-11 株式会社日立製作所 吸排気弁の電磁駆動装置
DE19746832C1 (de) 1997-10-23 1999-02-18 Isad Electronic Sys Gmbh & Co Elektromagnetische Stelleinrichtung
DE19905176A1 (de) * 1999-02-09 2000-08-10 Fev Motorentech Gmbh Elektromagnetischer Aktuator mit Luftdämpfungselement
JP3872230B2 (ja) * 1999-05-07 2007-01-24 株式会社日立製作所 吸排気弁の電磁駆動装置
DE19935871C2 (de) * 1999-07-30 2003-02-13 Daimler Chrysler Ag Vorrichtung mit zumindest einem elektromagnetischen Aktuator zum Betätigen eines Gaswechselventils und ein Verfahren zu deren Betreibung
IT1311131B1 (it) * 1999-11-05 2002-03-04 Magneti Marelli Spa Metodo per il controllo di attuatori elettromagnetici perl'azionamento di valvole di aspirazione e scarico in motori a
DE10000045A1 (de) * 2000-01-02 2001-07-05 Leiber Heinz Elektromagnetischer Aktuator
DE10107698C1 (de) 2001-02-19 2002-08-22 Bosch Gmbh Robert Gaswechselventileinrichtung für eine Brennkraftmaschine
DE10120401A1 (de) * 2001-04-25 2002-10-31 Daimler Chrysler Ag Vorrichtung zur Betätigung eines Gaswechselventils
US20040169988A1 (en) * 2001-05-14 2004-09-02 Heinz Leiber Electromagnetic control device
DE10150879A1 (de) * 2001-10-16 2003-04-17 Trw Deutschland Gmbh Baugruppe bestehend aus einer Ankerplatte und mindestens einem Schaft und Verfahren zu ihrer Herstellung
US6681731B2 (en) * 2001-12-11 2004-01-27 Visteon Global Technologies, Inc. Variable valve mechanism for an engine
DE10220788A1 (de) * 2002-05-10 2003-11-20 Daimler Chrysler Ag Elektromagnetischer Aktuator mit einem Schwenkanker
DE10225358A1 (de) * 2002-06-07 2003-12-24 Daimler Chrysler Ag Elektromagnetischer Aktuator mit einem Schwenkanker
DE10226524A1 (de) * 2002-06-14 2003-12-24 Daimler Chrysler Ag Elektromagnetischer Aktuator
DE10231374A1 (de) * 2002-07-11 2004-01-22 Daimlerchrysler Ag Aktuator
US10344682B1 (en) 2017-01-13 2019-07-09 Andre H Vandenberg Engine valve shaft with flow passages for intake and exhaust control

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Publication number Priority date Publication date Assignee Title
DE118591C (fr) *
DE242228C (fr) *
FR964E (fr) * 1899-10-06 1903-04-29 Montreuil Charles Perfectionnements aux moteurs à explosions
DE3307070C2 (de) * 1983-03-01 1985-11-28 FEV Forschungsgesellschaft für Energietechnik und Verbrennungsmotoren mbH, 5100 Aachen Stelleinrichtung für ein zwischen zwei Endstellungen verstellbares Schaltelement
DE3307683C1 (de) * 1983-03-04 1984-07-26 Klöckner, Wolfgang, Dr., 8033 Krailling Verfahren zum Aktivieren einer elektromagnetisch arbeitenden Stelleinrichtung sowie Vorrichtung zum Durchfuehren des Verfahrens
US4515343A (en) * 1983-03-28 1985-05-07 Fev Forschungsgesellschaft fur Energietechnik und ver Brennungsmotoren mbH Arrangement for electromagnetically operated actuators
DE3513103A1 (de) * 1985-04-12 1986-10-16 Fleck, Andreas, 2000 Hamburg Elektromagnetisch arbeitende stellvorrichtung
CA1331942C (fr) * 1986-04-16 1994-09-13 Tadashi Hanaoka Systeme de distribution pour moteur a combustion interne
DE3616540A1 (de) * 1986-05-16 1987-11-19 Porsche Ag Vorrichtung zum betaetigen eines gaswechsel-tellerventils einer hubkolben-brennkraftmaschine
US4777915A (en) * 1986-12-22 1988-10-18 General Motors Corporation Variable lift electromagnetic valve actuator system

Also Published As

Publication number Publication date
DE3739891A1 (de) 1989-06-08
US4867111A (en) 1989-09-19
EP0317725A1 (fr) 1989-05-31
ES2028222T3 (es) 1992-07-01
DE3868018D1 (de) 1992-03-05

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