EP0748416B1 - Commande électromagnétique d'une soupape dans un moteur a combustion interne - Google Patents

Commande électromagnétique d'une soupape dans un moteur a combustion interne Download PDF

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Publication number
EP0748416B1
EP0748416B1 EP95942673A EP95942673A EP0748416B1 EP 0748416 B1 EP0748416 B1 EP 0748416B1 EP 95942673 A EP95942673 A EP 95942673A EP 95942673 A EP95942673 A EP 95942673A EP 0748416 B1 EP0748416 B1 EP 0748416B1
Authority
EP
European Patent Office
Prior art keywords
spring element
gas exchange
anchor
electromagnets
exchange 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.)
Expired - Lifetime
Application number
EP95942673A
Other languages
German (de)
English (en)
Other versions
EP0748416A1 (fr
Inventor
Thomas Esch
Martin Pischinger
Michael Schebitz
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.)
FEV Europe GmbH
Original Assignee
FEV Motorentechnik GmbH 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 FEV Motorentechnik GmbH and Co KG filed Critical FEV Motorentechnik GmbH and Co KG
Priority to EP00123025A priority Critical patent/EP1069285B1/fr
Publication of EP0748416A1 publication Critical patent/EP0748416A1/fr
Application granted granted Critical
Publication of EP0748416B1 publication Critical patent/EP0748416B1/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
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means

Definitions

  • Electromagnetically actuated actuators of gas exchange valves on internal combustion engines are known for example from EP-A-0 043 426 and EP-A-0 197 357.
  • the known from these publications Designs however, have a high specific power-to-weight ratio and a large footprint so that when used as actuators for gas exchange valves Internal combustion engines of modern design, especially those with Multi-valve operation, cannot be used.
  • Comparable actuators are, for example known from US-A-4,841,923, US-A-4,777,915 and US-A-5,548,263. These systems have two with their pole faces facing each other facing, spaced electromagnets on between which an anchor against the force of resetting spring elements movable back and forth is.
  • the resetting spring elements are inside the Electromagnets arranged and the armature fixed to the shaft of the gas exchange valve to be actuated.
  • the restoring spring elements are enclosed by the electromagnets are, there is a large construction volume with the Disadvantages already mentioned above.
  • Another disadvantage consists of the anchor being firmly attached to the shaft of the Gas exchange valve is connected, so that such an actuator must be mounted on the internal combustion engine and cannot be easily replaced.
  • US-A-4,831,973 is also a Actuator with outside the electromagnet return springs known.
  • the invention has for its object the previously known electromagnetic actuators in their construction simplify and thus to a more compact space-saving Design to arrive.
  • Electromagnetic actuator with the specified in claim 1 Features.
  • a spring element acts directly on the armature and the counteracting other spring element acts according to Art a return spring on the actuator on the armature.
  • This design enables effective use of the pole faces, resulting in a more compact form of the actuator overall leads.
  • Another advantage of this design is that the Gas exchange valve as before, with one in the closing direction acting valve spring is provided at the same time serves as one of the spring elements of the actuator, the acts on the anchor of the actuator. Therefore there is an advantage of the invention in that the spring elements on the End faces of the electromagnet are arranged.
  • the connecting rod is divided is executed, with a part firmly connected to the anchor and the other, the gas exchange valve Part is connected to the associated spring element and through this frictionally connected to the anchor stands.
  • the anchor can with the firmly connected part of the push rod a purely axial Carry out movement.
  • the part connected to the spring element the push rod can be used when using a coil spring as a spring element, without influencing the armature in their Carry out spring rotation that occurs.
  • the magnetic coil with a laminated yoke body is connected, so that the emergence of Eddy currents is reduced.
  • one of the two electromagnets in the direction of movement of the anchor slidably mounted and with a Actuator is connected, which is an additional electromagnetic has and by which the distance of the facing each other Pole surfaces of the two electromagnets can be changed is, the displaceably mounted electromagnet in cooperation with the second spring element acting as a return spring are held in two different end positions can.
  • FIGS 2 and 3 do not represent Embodiment of the invention. They are for illustration only of technical characteristics of the Dependent claims.
  • the actuating device shown in Fig. 1 for actuation a gas exchange valve has two spaced apart Magnets 1 and 2, whose yoke body with magnetic coils 3 and 4 are provided.
  • the arrangement is here taken so that the respective pole faces 5 and 6 each other are opposite. Is between the two pole faces 5 and 6 an anchor 7 arranged with a two-part design Push rod 8 is connected, the one push rod part 8.1 is firmly connected to the anchor while the other Push rod part 8.2 sits on the anchor 7.
  • the push rod 8 is in a bore 9 of the electromagnet 1 and a bore 10 of the electromagnet 2 out.
  • the electromagnet 1 is at its end facing away from the armature 7 provided with a lid-shaped housing 11 which serves as an abutment serves for a spring element 12, which is with his the other end is supported on a plate 13 which is connected to the push rod 8.2 is firmly connected.
  • the end face 14 of the electromagnet facing away from the armature 7 2 is the gas exchange valve 15 to be actuated at one Internal combustion engine turned.
  • the valve stem 16 of the gas exchange valve 15 is in the usual way in the cylinder head 17 out.
  • the free end of the valve stem 16 is firmly connected with a plate-shaped extension 18, which serves as an abutment of a first spring element 19, the is supported with its other end on the cylinder head 17.
  • the spring element 19 is here as well as the Fe derelement 12 formed as a helical compression spring, so that both spring elements act against each other, the spring element 19 at the same time as the closing spring of the gas exchange valve serves.
  • the spring element 12 on one side and the spring element 19 on the other side of the armature 7 are now designed that the equilibrium position of the armature 7 approximately in the middle between the two opposite pole faces 5 and 6 of the electromagnets 1 and 2.
  • the spring element 12 be designed with a progressive characteristic so that the Equilibrium position from the center position towards moves on the electromagnet 1 and thus a simpler Starting is possible.
  • the power supply is now to Electromagnet 1 switched off and the power supply to the electromagnet 2 switched on after a certain time.
  • the armature 7 is no longer on the pole face of the Electromagnet 1 held so that the spring element 12 the Anchor 7 towards the middle position between the two Pole surfaces of magnets 1 and 2 can move. in this connection the spring element 19 is loaded.
  • FIG. 2 shows a special embodiment of the embodiment an electromagnetic actuator for actuation a gas exchange valve shown with is provided with a spring arrangement, as shown below of Fig. 3 is described.
  • the arrangement shown in Fig. 2 again has an upper electromagnet 1 and one lower electromagnet 2, which are at a distance from each other are arranged and between which an armature 7 is axially movable is guided, via its push rod 8 on the valve stem 16 of the gas exchange valve 15 can act.
  • Fig. 3 the gem in the embodiment.
  • Fig. 2 shown also slim design in details shown and described.
  • the magnet 2 is only indicated in the illustration.
  • the anchor 7 only indicated here is above the push rod 8 with a bell-shaped abutment element 13.1 provided.
  • the second spring element 12 is supported here with one end on the free edge 13.2 of the abutment 13.1 and with its other end on the end face 14 of the magnet 2.
  • the one connected to the valve stem 16 plate-shaped approach 18 is located within the bell-shaped abutment 13.1 and here is how 1, via the first spring element 19 supported on the surface of the cylinder head 17.
  • the two spring elements 12 and 19 can be nested the embodiment acc. Fig. 1 reduces the overall height be without the compact slim design of the electromagnet is abandoned.
  • the method of operation corresponds to that based on 1 described method of operation.
  • the two spring elements Despite their different geometrical shapes, 12 and 19 Dimensions the same spring stiffness. To make things easier the "start", the spring element 12, such described above, have a progressive characteristic.
  • Electromagnet 2 connected coupling element 24 is formed becomes.
  • the electromagnet 1 and the additional magnet 22 are here rigidly with a schematically indicated carrier 26 connected to the cylinder head 17.
  • the anchor plate 23 of the adjusting device is located at the position of the dashed line 28.
  • the second spring element 12 is also the return spring.
  • the "working direction" of the additional magnet should be made in this way be that the position of the slidable magnet currentless additional magnet corresponds to normal operating mode.
  • Represents the mode of operation with a long stroke represents "normal operation", the anchor plate 23 arranged on the other side of the additional magnet 22 his.
  • a magnetically actuated actuating device 21 can also be a mechanical, hydraulic or pneumatic adjustment of the stroke length of the armature 7 by moving of the magnet 2 may be provided.
  • coil springs can also use torsion springs or spiral springs, for example Leaf springs are used.
  • the magnets can have a circular cross section in horizontal section, but also a rectangular or square cross section exhibit. The latter is favorable for the laminated yoke body.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Claims (3)

  1. Dispositif de commande électromagnétique d'une soupape d'échange de gaz (15) sur un moteur à combustion interne, la soupape d'échange de gaz (18) étant pourvue d'une embase (18) et sollicitée par un premier élément de ressort (19) dans le sens de fermeture de la soupape d'échange de gaz, le dispositif de commande présentant au moins une tige de poussée (8), qui agit sur la soupape d'échange de gaz (15) à actionner et est en liaison avec un induit (7), qui est guidé de façon à pouvoir faire un mouvement de va-et-vient entre les faces polaires (5, 6) de deux électroaimants (1, 2) disposés avec un espacement axial l'un par rapport à l'autre et qui, lorsque les électroaimants (1, 2) sont mis hors tension, est maintenu, par un deuxième élément de ressort (12) agissant dans le sens contraire au premier élément de ressort (19) dans une position intermédiaire entre les faces polaires (5, 6), caractérisé en ce que les éléments de ressort (12, 19) sont respectivement disposés à l'extérieur des électroaimants (1, 2) sur leurs faces frontales et en ce que la tige de poussée (8) est réalisée en plusieurs parties, une partie (8.1) étant reliée de façon fixe à l'induit (7) et l'autre partie (8.2), opposée à la soupape d'échange de gaz (15), étant reliée au deuxième élément de ressort (12) attribué et étant en liaison avec l'induit (7) sous l'influence de la force de cet élément de ressort.
  2. Système de commande selon la revendication 1, caractérisé en ce que les bobines d'aimant (3, 4) des électroaimants (1,2) sont disposées dans un corps de culasse feuilleté.
  3. Dispositif de commande selon la revendication 1 ou 2, caractérisé en ce que l'un des deux électroaimants (2) est logé de façon à pouvoir coulisser dans la direction de déplacement (20) de l'induit (7) et relié à un dispositif de commande (21), qui présente un électroaimant supplémentaire (22) et au moyen duquel on peut faire varier l'espacement des faces polaires (5, 6) tournées l'une vers l'autre des deux électroaimants (1, 2), l'électroaimant (2) logé de façon coulissante pouvant être positionné dans deux positions extrêmes différentes conjointement avec le deuxième élément de ressort faisant office de ressort de rappel.
EP95942673A 1994-12-21 1995-12-15 Commande électromagnétique d'une soupape dans un moteur a combustion interne Expired - Lifetime EP0748416B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00123025A EP1069285B1 (fr) 1994-12-21 1995-12-15 Dispositif électromagnétique pour actionner une soupape de gaz avec des ressorts concentriquement emboítés

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE9420463U DE9420463U1 (de) 1994-12-21 1994-12-21 Elektromagnetisch betätigbare Stellvorrichtung
DE9420463U 1994-12-21
PCT/EP1995/004970 WO1996019643A1 (fr) 1994-12-21 1995-12-15 Regulateur a commande electromagnetique

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP00123025A Division EP1069285B1 (fr) 1994-12-21 1995-12-15 Dispositif électromagnétique pour actionner une soupape de gaz avec des ressorts concentriquement emboítés

Publications (2)

Publication Number Publication Date
EP0748416A1 EP0748416A1 (fr) 1996-12-18
EP0748416B1 true EP0748416B1 (fr) 2002-04-17

Family

ID=6917724

Family Applications (2)

Application Number Title Priority Date Filing Date
EP00123025A Expired - Lifetime EP1069285B1 (fr) 1994-12-21 1995-12-15 Dispositif électromagnétique pour actionner une soupape de gaz avec des ressorts concentriquement emboítés
EP95942673A Expired - Lifetime EP0748416B1 (fr) 1994-12-21 1995-12-15 Commande électromagnétique d'une soupape dans un moteur a combustion interne

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP00123025A Expired - Lifetime EP1069285B1 (fr) 1994-12-21 1995-12-15 Dispositif électromagnétique pour actionner une soupape de gaz avec des ressorts concentriquement emboítés

Country Status (4)

Country Link
US (1) US5813653A (fr)
EP (2) EP1069285B1 (fr)
DE (4) DE9420463U1 (fr)
WO (1) WO1996019643A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19518056B4 (de) * 1995-05-17 2005-04-07 Fev Motorentechnik Gmbh Einrichtung zur Steuerung der Ankerbewegung einer elektromagnetischen Schaltanordnung und Verfahren zur Ansteuerung
DE19747009C2 (de) * 1997-10-24 2000-11-16 Daimler Chrysler Ag Elektromagnetischer Aktuator zur Betätigung eines Gaswechselventils
DE19822907B4 (de) * 1998-05-22 2006-07-27 Fev Motorentechnik Gmbh Elektromagnetischer Aktuator mit gelenkig abgestützter Rückstellfeder
US6091314A (en) * 1998-06-05 2000-07-18 Siemens Automotive Corporation Piezoelectric booster for an electromagnetic actuator
FR2783033B1 (fr) 1998-09-04 2006-06-02 Renault Agencement pour la commande electromagnetique d'une soupape
FR2790137B1 (fr) * 1999-02-19 2001-07-27 Sagem Module de rappel elastique et procede de fabrication d'un tel module
DE19919734A1 (de) * 1999-04-30 2000-11-02 Mahle Ventiltrieb Gmbh Verfahren und Vorrichtung zum Öffnen und Schließen eines Ventils eines Verbrennungsmotors
FR2817292B1 (fr) 2000-11-24 2003-01-24 Renault Procede de commande d'un moteur a combustion en vue d'optimiser le demarrage
JP2002188417A (ja) * 2000-12-21 2002-07-05 Honda Motor Co Ltd 内燃機関の電磁式動弁装置
FR2838864B1 (fr) 2002-04-18 2004-06-11 Renault Sa Actionneur lineaire electromagnetique de soupape comportant un dispositif de rappel a raideur variable
US20040079306A1 (en) * 2002-10-23 2004-04-29 Norton John D. Variable lift electromechanical valve actuator

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1471861A (en) * 1921-09-07 1923-10-23 Perrault Oscar Louis Valve-actuating mechanism for internal-combustion engines
GB1391955A (en) * 1972-07-12 1975-04-23 British Leyland Austin Morris Actuating internal combustion engine poppet valves
DE2630512A1 (de) * 1976-07-07 1978-01-12 Daimler Benz Ag Ventilsteuerung, insbesondere fuer brennkraftmaschinen
DE3024109A1 (de) 1980-06-27 1982-01-21 Pischinger, Franz, Prof. Dipl.-Ing. Dr.Techn., 5100 Aachen Elektromagnetisch arbeitende stelleinrichtung
DE3025537A1 (de) * 1980-07-05 1982-06-03 Arthur Böhm Kunststoffverarbeitung, 8676 Schwarzenbach, Saale Einrichtung, insbesondere zur halterung von rohren von rohrpostsystemen in schutzrohren
US4649803A (en) * 1984-08-15 1987-03-17 The Garrett Corporation Servo system method and apparatus, servo valve apparatus therefor and method of making same
DE3513107A1 (de) 1985-04-12 1986-10-16 Fleck, Andreas, 2000 Hamburg Elektromagnetisch arbeitende stelleinrichtung
DE3708373C1 (de) * 1987-03-14 1988-07-14 Fleck Andreas Verfahren zum Betreiben eines Einlassventiles einer Brennkraftmaschine
US4831973A (en) 1988-02-08 1989-05-23 Magnavox Government And Industrial Electronics Company Repulsion actuated potential energy driven valve mechanism
DE3920976A1 (de) * 1989-06-27 1991-01-03 Fev Motorentech Gmbh & Co Kg Elektromagnetisch arbeitende stelleinrichtung
DE4004876A1 (de) * 1990-02-16 1991-09-26 Ulrich Karrer Elektrisch betaetigte ventilsteuerung fuer periodisch betriebene ventile fuer kraftmaschinen
US5548263A (en) * 1992-10-05 1996-08-20 Aura Systems, Inc. Electromagnetically actuated valve

Also Published As

Publication number Publication date
DE59510563D1 (de) 2003-03-27
EP1069285A2 (fr) 2001-01-17
US5813653A (en) 1998-09-29
DE9420463U1 (de) 1996-04-25
DE59510173D1 (de) 2002-05-23
EP1069285A3 (fr) 2001-05-02
EP0748416A1 (fr) 1996-12-18
DE19581518D2 (de) 1997-02-27
WO1996019643A1 (fr) 1996-06-27
EP1069285B1 (fr) 2003-02-19

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