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EP0814238A1 - Electromagnetic actuating device for lift valves of internal combustion engines - Google Patents

Electromagnetic actuating device for lift valves of internal combustion engines Download PDF

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Publication number
EP0814238A1
EP0814238A1 EP97106783A EP97106783A EP0814238A1 EP 0814238 A1 EP0814238 A1 EP 0814238A1 EP 97106783 A EP97106783 A EP 97106783A EP 97106783 A EP97106783 A EP 97106783A EP 0814238 A1 EP0814238 A1 EP 0814238A1
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EP
European Patent Office
Prior art keywords
valve
tappet
actuating device
compensation element
actuator housing
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.)
Granted
Application number
EP97106783A
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German (de)
French (fr)
Other versions
EP0814238B1 (en
Inventor
Karl Treffler
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.)
Bayerische Motoren Werke AG
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Bayerische Motoren Werke 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
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Publication of EP0814238A1 publication Critical patent/EP0814238A1/en
Application granted granted Critical
Publication of EP0814238B1 publication Critical patent/EP0814238B1/en
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
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • 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

  • the invention relates to an electromagnetic actuating device for internal combustion engine lift valves with a valve actuating tappet guided in the actuator housing of the actuating device, which acts on the stem of the lift valve with the interaction of a hydraulic valve lash compensation element.
  • a valve actuating tappet guided in the actuator housing of the actuating device, which acts on the stem of the lift valve with the interaction of a hydraulic valve lash compensation element.
  • An electromagnetic globe valve actuation device has immense advantages, since the so-called valve control times, ie the opening and closing times of the globe valves, as well as the valve lift and valve lift course can be freely adjusted.
  • valve control times ie the opening and closing times of the globe valves, as well as the valve lift and valve lift course can be freely adjusted.
  • any possibility of compensating the valve clearance should also be provided on such an electromagnetic lift valve actuating device, in particular in cooperation with a valve clearance compensation element known per se.
  • a possible construction for this is shown in the above-mentioned document, which however, due to the intermediate rocker arm or rocker arm, which is supported on such a valve lash compensation element, is complex.
  • the object of the present invention is to show a simpler arrangement of a known hydraulic valve lash compensation element.
  • the valve lash compensation element is inserted in a cup tappet arranged between the valve actuating tappet and the lift valve stem, which in turn is guided in a valve plate in the bottom plate of the actuator housing.
  • Advantageous training and further training are included in the subclaims.
  • FIG. 3 shows an enlarged view of the surroundings of the valve lash compensation element from FIG. 2.
  • an electromagnetic actuation device designated in its entirety by 3
  • This consists of a so-called actuator housing 4, within which two magnet coils 5 are arranged, between which an armature plate 6 is mounted so as to be longitudinally displaceable in the valve axis direction 7.
  • This armature plate 6 is moved by the appropriately excited magnet coils 5 and ultimately transmits its movement via a valve actuating tappet 8 to the stem 1 ′ of the globe valve 1.
  • a cup tappet 9 is provided between the end of the valve actuating tappet 8 facing the stem 1 'and the free end of the stem 1', which carries a conventional valve clearance compensation element 10, the two ends of this compensation element 10 being located on the inside of the tappet 9 support on the one hand and on the free end of the shaft 1 'on the other hand.
  • the bucket tappet 9 is guided in a so-called base plate 4 'of the actuator housing 4 and is also longitudinally displaceable in the valve axis direction 7 in order to be able to transmit the movement of the valve actuation tappet 8 to the globe valve 1.
  • the actually plate-shaped base plate 4 ' is provided with a corresponding circular-cylindrical receptacle 11, in which the tappet 9 is directly displaceably mounted.
  • the tappet 9 is secured against falling out during assembly by means of a snap ring 12, a groove 13 in the outer wall of the tappet 9 ensuring the free displacement relative to the snap ring 12 to the required extent.
  • the tappet 9 is guided in a bushing 14 which is inserted into the receptacle 11 of the base plate 4 ′, which is thicker here - this additionally accommodates the lower magnet coil 5.
  • the tappet 9 is secured against falling out again by means of a snap ring 12.
  • the outside diameter of the cup tappet 9 is small compared to that of the actuator housing 4, ie the outside diameter of the cup tappet 9 is essentially only the outer diameter of the common valve lash compensating element 10, which is increased by twice the wall thickness of the cup tappet wall.
  • this cup tappet 9, which is optimized with regard to a minimum dead weight, differs substantially from common cup tappets, which are usually mounted directly in the internal combustion engine cylinder head, to accommodate a compensating element and operated directly by cams.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

The electromagnetic operating device (3) has an actuator housing (4) enclosing a valve operating rod (8), acting on the valve shaft (1') of the engine valve (1) via a hydraulic valve play compensation device (10). The latter has a dash-pot rod (9) between the valve operating rod and the valve shaft, displaced in the direction of the valve axis (7) relative to the base plate (4') of the actuator housing.

Description

Die Erfindung betrifft eine elektromagnetische Betätigungsvorrichtung für Brennkraftmaschinen-Hubventile mit einem im Aktuatorgehäuse der Betätigungsvorrichtung geführten Ventilbetätigungsstößel, der unter Zwischenwirkung eines hydraulischen Ventilspiel-Ausgleichselementes auf den Schaft des Hubventiles einwirkt. Zum bekannten Stand der Technik wird beispielshalber auf die DE 195 11 880 A1 verwiesen.The invention relates to an electromagnetic actuating device for internal combustion engine lift valves with a valve actuating tappet guided in the actuator housing of the actuating device, which acts on the stem of the lift valve with the interaction of a hydraulic valve lash compensation element. With regard to the known prior art, reference is made, for example, to DE 195 11 880 A1.

Eine elektromagnetische Hubventil-Betätigungsvorrichtung hat immense Vorteile, da die sog. Ventilsteuerzeiten, d. h. der Öffnungszeitpunkt und der Schließzeitpunkt der Hubventile, sowie der Ventilhub und Ventilhubverlauf frei einstellbar sind. Dabei sollte jedoch auch an einer derartigen elektromagnetischen Hubventil-Betätigungsvorrichtung irgendeine Möglichkeit zum Ausgleich des Ventilspieles vorgesehen sein, insbesondere in Zusammenwirkung mit einem an sich bekannten Ventilspiel-Ausgleichselement. Eine mögliche Konstruktion hierfür ist in der oben genannten Schrift gezeigt, welche jedoch aufgrund des zwischengeschalteten Kipp- oder Schwinghebels, welcher sich auf einem derartigen Ventilspiel-Ausgleichselement abstützt, aufwendig ist.An electromagnetic globe valve actuation device has immense advantages, since the so-called valve control times, ie the opening and closing times of the globe valves, as well as the valve lift and valve lift course can be freely adjusted. However, any possibility of compensating the valve clearance should also be provided on such an electromagnetic lift valve actuating device, in particular in cooperation with a valve clearance compensation element known per se. A possible construction for this is shown in the above-mentioned document, which however, due to the intermediate rocker arm or rocker arm, which is supported on such a valve lash compensation element, is complex.

Aufgabe der vorliegenden Erfindung ist es, eine demgegenüber einfachere Anordnung eines an sich bekannten hydraulischen Ventilspiel-Ausgleichselemenes aufzuzeigen.
Zur Lösung dieser Aufgabe ist vorgesehen, daß das Ventilspiel-Ausgleichselement in einem zwischen dem Ventilbetätigungsstößel und dem Hubventil-Schaft angeordneten Tassenstößel eingesetzt ist, der seinerseits in Ventilachsrichtung verschiebbar in einer Bodenplatte des Aktuatorgehäuses geführt ist. Vorteilhafte Aus- und Weiterbildungen sind Inhalt der Unteransprüche.The object of the present invention is to show a simpler arrangement of a known hydraulic valve lash compensation element.
To solve this problem it is provided that the valve lash compensation element is inserted in a cup tappet arranged between the valve actuating tappet and the lift valve stem, which in turn is guided in a valve plate in the bottom plate of the actuator housing. Advantageous training and further training are included in the subclaims.

Näher erläutert wird die Erfindung anhand zweier bevorzugter Ausführungsbeispiele, wobei in den beiden Figuren 1, 2 jeweils ein Längsschnitt durch eine elektromagnetische Betätigungsvorrichtung mit zu betätigendem Hubventil dargestellt ist und gleiche Bauelemente stets mit gleichen Bezugsziffern bezeichnet sind. Fig. 3 zeigt vergrößert die Umgebung des Ventilspiel-Ausgleichselementes aus Fig. 2.The invention is explained in more detail with reference to two preferred exemplary embodiments, in each of which a longitudinal section through an electromagnetic actuating device with a lift valve to be actuated is shown in the two FIGS. 1, 2 and the same components are always identified with the same reference numbers. FIG. 3 shows an enlarged view of the surroundings of the valve lash compensation element from FIG. 2.

Zur Betätigung eines Brennkraftmaschinen-Hubventiles 1, das in bekannter Weise im Brennkraftmaschinen-Zylinderkopf 2 angeordnet ist, ist eine in ihrer Gesamtheit mit 3 bezeichnete elektromagnetische Betätigungsvorrichtung vorgesehen. Diese besteht aus einem sog. Aktuatorgehäuse 4, innerhalb dessen zwei Magnetspulen 5 angeordnet sind, zwischen denen eine Ankerplatte 6 in Ventilachsrichtung 7 längsverschiebbar gelagert ist. Diese Ankerplatte 6 wird durch die entsprechend erregten Magnetspulen 5 bewegt und überträgt ihre Bewegung über einen Ventilbetätigungsstößel 8 letztlich auf den Schaft 1' des Hubventiles 1.To actuate an internal combustion engine lift valve 1, which is arranged in a known manner in the internal combustion engine cylinder head 2, an electromagnetic actuation device, designated in its entirety by 3, is provided. This consists of a so-called actuator housing 4, within which two magnet coils 5 are arranged, between which an armature plate 6 is mounted so as to be longitudinally displaceable in the valve axis direction 7. This armature plate 6 is moved by the appropriately excited magnet coils 5 and ultimately transmits its movement via a valve actuating tappet 8 to the stem 1 ′ of the globe valve 1.

Zwischen dem dem Schaft 1' zugewandten Ende des Ventilbetätigungsstößels 8 sowie dem freien Ende des Schaftes 1' ist ein Tassenstößel 9 vorgesehen, der ein übliches, gängiges Ventilspiel-Ausgleichselement 10 trägt, wobei sich die beiden Enden dieses Ausgleichselementes 10 an der Innenseite des Tassenstößels 9 einerseits und am freien Ende des Schaftes 1' andererseits abstützen. Der Tassenstößel 9 ist dabei in einer sog. Bodenplatte 4' des Aktuatorgehäuses 4 geführt und zwar ebenfalls längsverschiebbar in Ventilachsrichtung 7, um die Bewegung des Ventilbetätigungsstößels 8 auf das Hubventil 1 übertragen zu können.A cup tappet 9 is provided between the end of the valve actuating tappet 8 facing the stem 1 'and the free end of the stem 1', which carries a conventional valve clearance compensation element 10, the two ends of this compensation element 10 being located on the inside of the tappet 9 support on the one hand and on the free end of the shaft 1 'on the other hand. The bucket tappet 9 is guided in a so-called base plate 4 'of the actuator housing 4 and is also longitudinally displaceable in the valve axis direction 7 in order to be able to transmit the movement of the valve actuation tappet 8 to the globe valve 1.

Beim Ausführungsbeispiel nach Fig. 1 ist die tatsächlich plattenförmig gestaltete Bodenplatte 4' mit einer entprechenden kreiszylindrischen Aufnahme 11 versehen, in welcher der Tassenstößel 9 direkt verschiebbar gelagert ist. Gegen Herausfallen bei der Montage gesichert ist der Tassenstößel 9 dabei mittels eines Sprengringes 12, wobei eine Nut 13 in der Außenwand des Tassenstößels 9 die freie Verschiebbarkeit gegenüber dem Sprengring 12 im benötigten Umfang sicherstellt. Beim Ausführungsbeispiel nach Fig. 2 ist der Tassenstößel 9 in einer Büchse 14 geführt, die in die Aufnahme 11 der hier dicker gestalteten Bodenplatte 4' - diese nimmt zusätzliche die untere Magnetspule 5 auf - eingesetzt ist. Auch beim Ausführungsbeispiel nach Fig. 2 ist der Tassenstößel 9 über einen Sprengring 12 wieder gegen Herausfallen gesichert.In the exemplary embodiment according to FIG. 1, the actually plate-shaped base plate 4 'is provided with a corresponding circular-cylindrical receptacle 11, in which the tappet 9 is directly displaceably mounted. The tappet 9 is secured against falling out during assembly by means of a snap ring 12, a groove 13 in the outer wall of the tappet 9 ensuring the free displacement relative to the snap ring 12 to the required extent. In the exemplary embodiment according to FIG. 2, the tappet 9 is guided in a bushing 14 which is inserted into the receptacle 11 of the base plate 4 ′, which is thicker here - this additionally accommodates the lower magnet coil 5. In the exemplary embodiment according to FIG. 2, the tappet 9 is secured against falling out again by means of a snap ring 12.

Wie ersichtlich ist bei beiden Ausführungsbeispielen der Außendurchmesser des Tassenstößels 9 klein gegenüber demjenigen des Aktuatorgehäuses 4, d. h. der Außendurchmesser des Tassenstößels 9 beträgt im wesentlichen nur den um die doppelte Wandstärke der Tassenstößel-Wand vergrößerten Außendurchmesser des gängigen Ventilspiel-Ausgleichselementes 10. Insofern unterscheidet sich dieser im Hinblick auf ein minimales Eigengewicht optimierte Tassenstößel 9 wesentlich von gängigen Tassenstößeln, die üblicherweise direkt im Brennkraftmaschinen-Zylinderkopf gelagert sind, ein Ausgleichselement aufnehmen und dabei direkt von Nocken betätigt werden.As can be seen in both exemplary embodiments, the outside diameter of the cup tappet 9 is small compared to that of the actuator housing 4, ie the outside diameter of the cup tappet 9 is essentially only the outer diameter of the common valve lash compensating element 10, which is increased by twice the wall thickness of the cup tappet wall. In this respect, this cup tappet 9, which is optimized with regard to a minimum dead weight, differs substantially from common cup tappets, which are usually mounted directly in the internal combustion engine cylinder head, to accommodate a compensating element and operated directly by cams.

In der Bodenplatte 4' verläuft ein Ölversorgungskanal 15 für das hydraulische Ventilspiel-Ausgleichselement 10, der einerseits über einen Stichkanal 16' mit einem Ölkanal 16 im Zylinderkopf 2 in Verbindung steht und andererseits an der Außenwand des Tassenstößels 9 mündet. Von hier gelangt das Hydraulikmedium bzw. Schmieröl wie üblich zum hydraulischen Ventilspiel-Ausgleichselement 10. Der detaillierte Aufbau des Aktuatorgehäuses 4 sowie die Lagerung der elektromagnetischen Betätigungsvorrichtung 3 im Zylinderkopf 2 ist an dieser Stelle nicht näher beschrieben und kann gestaltet sein wie in der nicht vorveröffentlichten Patentanmeldung 196 11 547, jedoch kann dies sowie eine Vielzahl weiterer Details durchaus abweichend von den gezeigten Ausführungsbeispielen gestaltet sein, ohne den Inhalt der Patentansprüche zu verlassen.In the base plate 4 'runs an oil supply duct 15 for the hydraulic valve lash compensation element 10, which on the one hand is connected via a branch duct 16' to an oil duct 16 in the cylinder head 2 and on the other hand opens on the outer wall of the tappet 9. From here, the hydraulic medium or lubricating oil, as usual, reaches the hydraulic valve lash compensation element 10. The detailed structure of the actuator housing 4 and the mounting of the electromagnetic actuating device 3 in the cylinder head 2 is not described in more detail at this point and can be designed as in the unpublished patent application 196 11 547, but this and a large number of further details can be designed quite differently from the exemplary embodiments shown, without departing from the content of the patent claims.

Claims (3)

Elektromagnetische Betätigungsvorrichtung für Brennkraftmaschinen-Hubventile (1) mit einem im Aktuatorgehäuse (4) der Betätigungsvorrichtung (3) geführten Ventilbetätigungsstößel (8), der unter Zwischenwirkung eines hydraulischen Ventilspiel-Ausgleichselementes (10) auf den Schaft (1') des Hubventiles (1) einwirkt,
dadurch gekennzeichnet, daß das Ventilspiel-Ausgleichselement (10) in einen zwischen dem Ventilbetätigungsstößel (8) und dem Hubventil-Schaft (1') angeordneten Tassenstößel (9) eingesetzt ist, der seinerseits in Ventilachsrichtung (7) verschiebbar in einer Bodenplatte (4') des Aktuatorgehäuses (4) geführt ist.Electromagnetic actuating device for internal combustion engine lift valves (1) with a valve actuating tappet (8) which is guided in the actuator housing (4) of the actuating device (3) and which interacts with a hydraulic valve lash compensation element (10) on the stem (1 ') of the lifting valve (1) acts,
characterized in that the valve lash compensation element (10) is inserted into a cup tappet (9) which is arranged between the valve actuating tappet (8) and the lifting valve stem (1 ') and which is in turn displaceable in a base plate (4') in the valve axis direction (7) ) of the actuator housing (4) is guided. Betätigungsvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß der Außendurchmesser des Tassenstößels (9) klein gegenüber demjenigen des Aktuatorgehäuses (4) und im wesentlichen nur um die doppelte Wandstärke der Tassenstößel-Wand größer als der Außendurchmesser des gängigen Ventilspiel-Ausgleichselementes (9) ist.Actuating device according to claim 1,
characterized in that the outer diameter of the bucket tappet (9) is small compared to that of the actuator housing (4) and essentially only larger by twice the wall thickness of the bucket tappet wall than the outer diameter of the common valve lash compensation element (9). Betätigungsvorrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß durch die Bodenplatte (4') ein Ölversorgungskanal (15) für das hydraulische Ventilspiel-Ausgleichselement (10) verläuft.Actuating device according to claim 1 or 2,
characterized in that an oil supply channel (15) for the hydraulic valve lash compensation element (10) runs through the base plate (4 ').
EP97106783A 1996-06-18 1997-04-24 Electromagnetic actuating device for lift valves of internal combustion engines Expired - Lifetime EP0814238B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19624296 1996-06-18
DE19624296A DE19624296A1 (en) 1996-06-18 1996-06-18 Electromagnetic actuating device for internal combustion engine lift valves

Publications (2)

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EP0814238A1 true EP0814238A1 (en) 1997-12-29
EP0814238B1 EP0814238B1 (en) 2000-01-19

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998042953A1 (en) * 1997-03-24 1998-10-01 Lsp Innovative Automotive Systems Gmbh Valve for an internal combustion engine
WO1999019610A1 (en) * 1997-10-15 1999-04-22 Daimlerchrysler Ag Device for operating a gas shuttle valve of a reciprocating internal combustion engine
WO2000011326A1 (en) * 1998-08-20 2000-03-02 Daimlerchrysler Ag Device for actuating a gas exchange valve
WO2001049982A1 (en) 2000-01-02 2001-07-12 Heinz Leiber Electromagnetic actuator
EP1002938A3 (en) * 1998-11-20 2002-04-24 Toyota Jidosha Kabushiki Kaisha Solenoid valve device
CN1109181C (en) * 1997-07-05 2003-05-21 戴姆勒-克莱斯勒股份公司 Device for operating a gas shuttle valve by means of an electromagnetic actuator
FR2864574A1 (en) * 2003-12-24 2005-07-01 Peugeot Citroen Automobiles Sa POWER SUPPLY CIRCUIT FOR A HYDRAULIC STOP, FOR RETRIEVING THE OPERATING SET BETWEEN A VALVE OF AN INTERNAL COMBUSTION ENGINE AND ITS ACTUATING DEVICE

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Publication number Priority date Publication date Assignee Title
JPH11336519A (en) * 1998-04-07 1999-12-07 Fev Motorentechnik Gmbh & Co Kg Electromagnetic actuator for gas exchange valve with integrated valve clearance correction device
DE19825412C2 (en) * 1998-06-06 2001-10-25 Daimler Chrysler Ag Device for actuating a gas exchange valve
DE19826832A1 (en) * 1998-06-16 1999-12-23 Fev Motorentech Gmbh Electromagnetic actuator for operating gas exchange valve on IC piston engine
DE19831250C1 (en) * 1998-07-11 1999-10-07 Daimler Chrysler Ag Solenoid operated poppet valve for internal combustion engine
DE19831520A1 (en) * 1998-07-14 2000-01-20 Schaeffler Waelzlager Ohg Electromagnetic valve drive which is built into cylinder head of IC engine has valve drive with devices for centering middle position of closing and opening magnets, relative to half stroke of armature
DE19851679C1 (en) * 1998-11-10 2000-05-31 Daimler Chrysler Ag Electromagnetic valve actuator starting involves periodically stimulating magnet during starting, setting current level so valve disc contacts valve seat without armature reaching magnet
DE19938451A1 (en) 1999-08-13 2001-02-15 Bayerische Motoren Werke Ag Electromagnetically actuated valve train for a lifting valve of a reciprocating piston internal combustion engine
DE10018559C1 (en) * 2000-04-14 2001-06-21 Daimler Chrysler Ag Electromagnetic actuator for stroke valve in IC engine cylinder has guide sleeve of separate sintered component with stretched neck acting as valve actuator guide
JP3614092B2 (en) * 2000-08-15 2005-01-26 日産自動車株式会社 Valve clearance estimation device and control device for electromagnetically driven valve

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GB2137420A (en) * 1983-03-28 1984-10-03 Fev Forsch Energietech Verbr Electromagnetically-operated adjusting means
EP0405189A1 (en) * 1989-06-27 1991-01-02 FEV Motorentechnik GmbH & Co. KG Electromagnetic positioning device
US5127375A (en) * 1991-04-04 1992-07-07 Ford Motor Company Hydraulic valve control system for internal combustion engines

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DE4035376C2 (en) * 1989-11-16 2000-04-27 Volkswagen Ag Actuator for a lift valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2137420A (en) * 1983-03-28 1984-10-03 Fev Forsch Energietech Verbr Electromagnetically-operated adjusting means
EP0405189A1 (en) * 1989-06-27 1991-01-02 FEV Motorentechnik GmbH & Co. KG Electromagnetic positioning device
US5127375A (en) * 1991-04-04 1992-07-07 Ford Motor Company Hydraulic valve control system for internal combustion engines

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998042953A1 (en) * 1997-03-24 1998-10-01 Lsp Innovative Automotive Systems Gmbh Valve for an internal combustion engine
CN1109181C (en) * 1997-07-05 2003-05-21 戴姆勒-克莱斯勒股份公司 Device for operating a gas shuttle valve by means of an electromagnetic actuator
WO1999019610A1 (en) * 1997-10-15 1999-04-22 Daimlerchrysler Ag Device for operating a gas shuttle valve of a reciprocating internal combustion engine
WO2000011326A1 (en) * 1998-08-20 2000-03-02 Daimlerchrysler Ag Device for actuating a gas exchange valve
EP1002938A3 (en) * 1998-11-20 2002-04-24 Toyota Jidosha Kabushiki Kaisha Solenoid valve device
WO2001049982A1 (en) 2000-01-02 2001-07-12 Heinz Leiber Electromagnetic actuator
FR2864574A1 (en) * 2003-12-24 2005-07-01 Peugeot Citroen Automobiles Sa POWER SUPPLY CIRCUIT FOR A HYDRAULIC STOP, FOR RETRIEVING THE OPERATING SET BETWEEN A VALVE OF AN INTERNAL COMBUSTION ENGINE AND ITS ACTUATING DEVICE
WO2005064123A3 (en) * 2003-12-24 2005-09-09 Peugeot Citroen Automobiles Sa Hydraulic bump stop supply system which is intended to take up the clearance between an internal combustion engine valve and the actuating member thereof

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Publication number Publication date
EP0814238B1 (en) 2000-01-19
DE19624296A1 (en) 1998-01-02
DE59701027D1 (en) 2000-02-24

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