EP0814238B1 - Dispositif électromagnétique d'actionnement de soupapes à levée pour moteurs à combustion interne - Google Patents

Dispositif électromagnétique d'actionnement de soupapes à levée pour moteurs à combustion interne Download PDF

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Publication number
EP0814238B1
EP0814238B1 EP97106783A EP97106783A EP0814238B1 EP 0814238 B1 EP0814238 B1 EP 0814238B1 EP 97106783 A EP97106783 A EP 97106783A EP 97106783 A EP97106783 A EP 97106783A EP 0814238 B1 EP0814238 B1 EP 0814238B1
Authority
EP
European Patent Office
Prior art keywords
valve
actuating device
internal combustion
tappet
combustion engines
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
EP97106783A
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German (de)
English (en)
Other versions
EP0814238A1 (fr
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
Original Assignee
Bayerische Motoren Werke AG
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Filing date
Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0814238A1 publication Critical patent/EP0814238A1/fr
Application granted granted Critical
Publication of EP0814238B1 publication Critical patent/EP0814238B1/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
    • F01L1/20—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 actuator for Internal combustion engine lift valves with one in the actuator housing of the actuating device guided valve actuating plunger, which interacts a hydraulic valve lash compensation element on the stem acts on the globe valve.
  • EP-A-405 189 referenced.
  • An electromagnetic lift valve actuator has immense Advantages because the so-called valve timing, d. H. the opening time and the Closing time of the globe valves, as well as the valve lift and valve lift curve are freely adjustable.
  • valve timing d. H. the opening time and the Closing time of the globe valves, as well as the valve lift and valve lift curve are freely adjustable.
  • any way to Compensation for the valve clearance may be provided, especially in cooperation with a known valve lash compensation element.
  • a possible construction for this is shown in the above-mentioned document, whereby the valve clearance compensation element in the interior of the actuator housing, more precisely in the armature provided in it, between the two electromagnetic coils of the actuator housing is guided to be longitudinally displaceable is.
  • valve lash adjuster hides a number of disadvantages. So a usually hydraulic valve lash compensation element with a suitable hydraulic medium - usually the lubricating oil of the internal combustion engine is used for this - supplied become what is extremely problematic in the interior of the actuator housing is because the solenoids and the armature moving between them are not may be charged with the internal combustion engine lubricating oil. Further causes the valve lash adjuster located in the armature one Malfunction of the magnetic flux in the armature or generally a malfunction of the magnetic field lines. Furthermore, the anchor is made of soft iron and thus allows not the direct installation of a simple one, just from a piston as well a spring element existing (in itself common) valve lash compensation element, since this cannot be moved lengthways directly in the anchor can be stored.
  • the object of the present invention is to show an improved 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 lifting valve stem, which in turn is guided displaceably in the valve axis direction in a base plate of the actuator housing, the outside diameter of the cup tappet being small compared to that of the actuator housing and is essentially only twice the wall thickness of the tappet wall larger than the outer diameter of the common valve lash compensation element.
  • valve clearance compensating element no longer arranged within the actuator housing no interference with the magnetic field lines between the armature and the solenoids.
  • the proposed tappet now allows direct installation of the simplest, only from a piston and a Spring element of existing (per se common) valve lash compensation element, and the moving masses - as desirable - so To keep it as small as possible, the diameter of the tappet is like specified minimized.
  • FIG. 3 shows an enlarged view of the area around the valve lash compensation element from Fig. 2.
  • an internal combustion engine lift valve 1 which is known in the art Way is arranged in the engine cylinder head 2, one in it Set of 3 designated electromagnetic actuator intended.
  • This consists of a so-called actuator housing 4, inside whose two magnetic coils 5 are arranged, between which an armature plate 6 is mounted for longitudinal displacement in the valve axis direction 7.
  • This anchor plate 6 is moved by the correspondingly excited magnet coils 5 and ultimately transmits its movement via a valve actuation tappet 8 the stem 1 'of the lift valve 1.
  • a cup tappet 9 which carries a common, common valve lash compensation element 10, the two ends of this compensating element 10 on the inside of the tappet 9 on the one hand and at the free end of the shaft 1 ' support on the other.
  • the tappet 9 is in a so-called base plate 4 'of the actuator housing 4 out and also longitudinally displaceable in the valve axis direction 7 to the movement of the valve actuating tappet 8 can be transferred to the globe valve 1.
  • FIG. 1 it is actually plate-shaped Base plate 4 'with a corresponding circular cylindrical receptacle 11 provided, in which the tappet 9 is directly slidably 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 Bucket 9 the free movement compared to the snap ring 12 in ensures the required scope.
  • 2 is the Cup tappet 9 guided in a sleeve 14, which is in the receptacle 11 here thicker designed base plate 4 '- this takes the additional lower magnetic coil 5 on - is inserted.
  • the tappet 9 again against falling out via a snap ring 12 secured.
  • the outer diameter is in both exemplary embodiments the cup tappet 9 is small compared to that of the actuator housing 4, d. H. the outer diameter of the tappet 9 is essentially only the one that is twice the wall thickness of the tappet wall Outside diameter of the common valve lash adjustment element 10. In this respect this differs in terms of a minimal dead weight Optimized tappets 9 significantly from common tappets, which are usually are stored directly in the engine cylinder head Take up the compensating element and be actuated directly by cams.
  • the detailed structure of the actuator housing 4 as well the storage of the electromagnetic actuator 3 in the cylinder head 2 is not described in more detail here and can be designed be as in unpublished patent application 196 11 547, however this and a number of other details may vary be designed by the exemplary embodiments shown, without the content of To leave claims.

Claims (2)

  1. Dispositif d'actionnement électromagnétique des soupapes à levée (1) d'un moteur à combustion interne comprenant un poussoir d'actionnement de soupape (8) guidé dans le corps (4) de l'actionneur d'un dispositif d'actionnement (3), ce poussoir agissant avec interposition d'un compensateur hydraulique de jeu (10) sur la tige (1') de la soupape à levée (1),
    caractérisé en ce que
    le compensateur de jeu de soupapes (10) est placé dans un poussoir en forme de gobelet (9) prévu entre le poussoir d'actionnement de soupape (8) et la tige (1') de la soupape, ce poussoir étant guidé de manière coulissante dans la direction de l'axe de soupape (7) dans la plaque de fond (4') du corps (4) de l'actionneur,
    le diamètre extérieur du poussoir en forme de gobelet (9) étant petit par rapport à celui du corps (4) de l'actionneur et ne dépassant principalement le diamètre extérieur d'un compensateur usuel de jeu de soupapes (10) que du double de l'épaisseur de la paroi du poussoir en forme de gobelet.
  2. Dispositif d'actionnement selon la revendication 1,
    caractérisé en ce que
    la plaque de fond (4') est traversée par un canal d'alimentation en huile (15) pour le compensateur hydraulique de jeu de soupapes (10).
EP97106783A 1996-06-18 1997-04-24 Dispositif électromagnétique d'actionnement de soupapes à levée pour moteurs à combustion interne Expired - Lifetime EP0814238B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19624296A DE19624296A1 (de) 1996-06-18 1996-06-18 Elektromagnetische Betätigungsvorrichtung für Brennkraftmaschinen-Hubventile
DE19624296 1996-06-18

Publications (2)

Publication Number Publication Date
EP0814238A1 EP0814238A1 (fr) 1997-12-29
EP0814238B1 true EP0814238B1 (fr) 2000-01-19

Family

ID=7797269

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97106783A Expired - Lifetime EP0814238B1 (fr) 1996-06-18 1997-04-24 Dispositif électromagnétique d'actionnement de soupapes à levée pour moteurs à combustion interne

Country Status (2)

Country Link
EP (1) EP0814238B1 (fr)
DE (2) DE19624296A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1002938A2 (fr) * 1998-11-20 2000-05-24 Toyota Jidosha Kabushiki Kaisha Commande de soupape électromagnétique
US6089197A (en) * 1998-06-16 2000-07-18 Fev Motorentechnik Gmbh Electromagnetic actuator for an engine valve, including an integrated valve slack adjuster
US6394416B2 (en) 1998-08-20 2002-05-28 Daimlerchrysler Ag Device for operating a gas exchange valve
US6554248B2 (en) * 2000-08-15 2003-04-29 Nissan Motor Co., Ltd. Apparatus for estimating valve-clearance of an electro-magnetically operated valve and valve-operation controller for the electro-magnetically operated valve
FR2864574A1 (fr) 2003-12-24 2005-07-01 Peugeot Citroen Automobiles Sa Circuit d'alimentation d'une butee hydraulique, destinee a rattraper le jeu de fonctionnement entre une soupape d'un moteur a combustion interne et son organe d'actionnement

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998042953A1 (fr) * 1997-03-24 1998-10-01 Lsp Innovative Automotive Systems Gmbh Soupape pour moteur a combustion interne
DE19728479C2 (de) * 1997-07-05 2001-08-30 Daimler Chrysler Ag Vorrichtung zur Betätigung eines Gaswechselventils mit einem elektromagnetischen Aktuator
DE19745522C2 (de) * 1997-10-15 2001-03-22 Daimler Chrysler Ag Vorrichtung zur Betätigung eines Gaswechselventiles einer Hubkolbenbrennkraftmaschine
JPH11336519A (ja) * 1998-04-07 1999-12-07 Fev Motorentechnik Gmbh & Co Kg 弁すき間補正装置を一体化したガス交換弁用電磁アクチュエ―タ
DE19825412C2 (de) * 1998-06-06 2001-10-25 Daimler Chrysler Ag Vorrichtung zum Betätigen eines Gaswechselventils
DE19831250C1 (de) * 1998-07-11 1999-10-07 Daimler Chrysler Ag Vorrichtung zum Betätigen eines Gaswechselventils mit einem elektromagnetischen Aktuator
DE19831520A1 (de) * 1998-07-14 2000-01-20 Schaeffler Waelzlager Ohg Elektromagnetischer Ventiltrieb
DE19851679C1 (de) * 1998-11-10 2000-05-31 Daimler Chrysler Ag Verfahren zum Start eines elektromagnetischen Aktuators
DE19938451A1 (de) 1999-08-13 2001-02-15 Bayerische Motoren Werke Ag Elektromagnetisch betätigter Ventiltrieb für ein Hubventil einer Hubkolben-Brennkraftmaschine
DE10000045A1 (de) 2000-01-02 2001-07-05 Leiber Heinz Elektromagnetischer Aktuator
DE10018559C1 (de) * 2000-04-14 2001-06-21 Daimler Chrysler Ag Elektromagnetische Betätigungsvorrichtung für ein im Zylinderkopf einer Brennkraftmaschine angeordnetes Hubventil

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3311250C2 (de) * 1983-03-28 1985-08-01 FEV Forschungsgesellschaft für Energietechnik und Verbrennungsmotoren mbH, 5100 Aachen Vorrichtung zur elektromagnetischen Betätigung eines Gaswechselventils für Verdrängungsmaschinen
DE3920976A1 (de) * 1989-06-27 1991-01-03 Fev Motorentech Gmbh & Co Kg Elektromagnetisch arbeitende stelleinrichtung
DE4035376C2 (de) * 1989-11-16 2000-04-27 Volkswagen Ag Betätigungseinrichtung für ein Hubventil
US5127375A (en) * 1991-04-04 1992-07-07 Ford Motor Company Hydraulic valve control system for internal combustion engines

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6089197A (en) * 1998-06-16 2000-07-18 Fev Motorentechnik Gmbh Electromagnetic actuator for an engine valve, including an integrated valve slack adjuster
US6394416B2 (en) 1998-08-20 2002-05-28 Daimlerchrysler Ag Device for operating a gas exchange valve
EP1002938A2 (fr) * 1998-11-20 2000-05-24 Toyota Jidosha Kabushiki Kaisha Commande de soupape électromagnétique
US6554248B2 (en) * 2000-08-15 2003-04-29 Nissan Motor Co., Ltd. Apparatus for estimating valve-clearance of an electro-magnetically operated valve and valve-operation controller for the electro-magnetically operated valve
FR2864574A1 (fr) 2003-12-24 2005-07-01 Peugeot Citroen Automobiles Sa Circuit d'alimentation d'une butee hydraulique, destinee a rattraper le jeu de fonctionnement entre une soupape d'un moteur a combustion interne et son organe d'actionnement
WO2005064123A2 (fr) 2003-12-24 2005-07-14 Peugeot Citroen Automobiles Circuit d'alimentation d'une butee hydraulique, destinee a rattraper le jeu de fonctionnement entre une soupape d'un moteur a combustion interne et son organe d'actionnement

Also Published As

Publication number Publication date
DE19624296A1 (de) 1998-01-02
EP0814238A1 (fr) 1997-12-29
DE59701027D1 (de) 2000-02-24

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