EP1334263B1 - Moteur a combustion interne comprenant un actionneur electromagnetique place sur une culasse - Google Patents

Moteur a combustion interne comprenant un actionneur electromagnetique place sur une culasse Download PDF

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Publication number
EP1334263B1
EP1334263B1 EP01996673A EP01996673A EP1334263B1 EP 1334263 B1 EP1334263 B1 EP 1334263B1 EP 01996673 A EP01996673 A EP 01996673A EP 01996673 A EP01996673 A EP 01996673A EP 1334263 B1 EP1334263 B1 EP 1334263B1
Authority
EP
European Patent Office
Prior art keywords
engine according
actuator
cylinder head
electromagnet
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
EP01996673A
Other languages
German (de)
English (en)
Other versions
EP1334263A1 (fr
Inventor
Andreas Donner
Helmut Kellermann
Johannes Denteler
Johannes Meyer
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
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1334263A1 publication Critical patent/EP1334263A1/fr
Application granted granted Critical
Publication of EP1334263B1 publication Critical patent/EP1334263B1/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

  • the invention relates to an internal combustion engine with an electromagnetic actuator arranged on a cylinder head according to the preamble of claim 1.
  • An actuator according to the prior art is known from DE 197 12 669 A1.
  • an electromagnet between two axially spaced, formed on the valve lifter anchors is arranged.
  • a coil core of the electromagnet has one or more pole faces on the respective sides facing the anchors.
  • a force acting on the respective nearest armature predominates.
  • in conjunction with the dynamics of the actuator can be achieved by an alternating interruption and energization of the exciter circuit reciprocating the actuator and thus opening and closing the gas exchange valve coupled thereto.
  • the problem with the arrangement of such actuators on the cylinder heads is the overall height. If the actuators are too high, space problems can arise in the engine compartment. In particular, there may be problems with the assembly of the vehicle and the entry of the engine into the engine compartment.
  • a cavity is formed in the cylinder head, in which a part of the actuator is received.
  • This part is the actuator part projecting beyond the electromagnet, the electromagnet lying between the anchors at least partially delimiting the said cavity on the actuator side in the region of the connection plane between the actuator and the cylinder head. Due to the formation of said cavity and thus becoming possible shift of Aktor turnover in the cavity and thus in the direction of the cylinder height can be reduced significantly, resulting in total - especially taking into account a variety of actuators to be mounted - to a more compact internal combustion engine ,
  • a favorable heat dissipation can be achieved by a direct placement of the electromagnet on the cylinder head, so that the actuator is easy to cool.
  • the armature shaft is mounted in the electromagnet itself. Thus, it is only important to fix the electromagnet relative to the cylinder head.
  • the armature shaft of the actuator can be indirectly or directly coupled to the valve stem of the valve, for example with the interposition of a valve clearance compensation element.
  • valve spring can bias the valve to an end position, such as the closed position.
  • the valve spring is supported on the one hand on the valve stem and on the other hand on the cylinder head. This allows a simple installation of the valve.
  • a second spring can be integrated in the actuator and arranged cylinder head with respect to the electromagnet.
  • the simple structure of this embodiment is promoted when this Aktorfeder is supported directly against the cylinder head distant anchor.
  • By a screw device by means of the actuator spring is held by a spring seat, also an adjustment of the actuator, in particular the two anchor plates, in relation to its position to the electromagnet can be performed.
  • the electromagnet may consist of a coil core with one or more pole faces, as is known for example from DE 197 12 669 A1.
  • the actuator 10 comprises an electromagnet 12, which in the present case is shown only as a unit.
  • the electromagnet 12 may comprise one or more pole faces on the sides facing the respective anchors and one or more coils.
  • two bearings 15 are formed coaxially with a central bore at both end regions, which hold an armature shaft 14 movably guided in the axial direction.
  • the armature plate 16 is smaller than the armature plate 18.
  • the electromagnet 12 is accommodated in a housing 20 in such a way that, together with the housing 20, it essentially limits the actuator on the side of the small armature plate 16.
  • the anchor plate 16 is together with the protruding on this side anchor shaft 14 via the volume limited by the electromagnet 12 and the housing 20.
  • a coaxial with the bore in the electromagnet 12 aligned bore is formed with an internal thread into which a screw 26 is screwed.
  • the screwing device 26 also forms a spring seat for an actuator spring 22, which is supported on the one hand against this spring seat and on the other hand against a directly on the anchor plate 18 arranged valve seat.
  • the actuator spring 22 serves for biasing the gas exchange valve in the open position and is compressed in the presently illustrated embodiment.
  • the Einschraubvorraum 26 also includes a central, stepped bore into which a displacement sensor 28 (not shown in detail here) is inserted.
  • the displacement sensor 28 in turn comprises a central bore arranged coaxially with the cylinder bore, through which extends an extension of the armature shaft 14.
  • the reference numeral 23 denotes a so-called oil gallery. This is a supply line for lubricating oil, which ends in the region of the upper anchor plate 18 and ensures minimal lubrication by dropwise addition of lubricating oil.
  • a cylinder head 50 of the internal combustion engine is formed in the region of each valve with a recess (cavity) 58, in which the actuator part (armature plate 16 and armature shaft 14) protruding above the housing 20 and electromagnet 12 is accommodated.
  • the valve 52 is mounted in the cylinder head and is opposite to the actuator 12 in the cavity 58 inside.
  • valve spring 54 At the upper end of the valve 52, a spring seat 56 is arranged, against which a further springs, namely the valve spring 54, is supported.
  • valve spring 54 is supported against a spring seat directly on the cylinder head and biases the valve in its closed direction.
  • valve clearance compensation element At the upper end of the valve not shown in detail valve clearance compensation element is provided.
  • the anchor plate 16 is now introduced together with the armature shaft 14 in the cavity 58 such that the front end of the armature shaft comes to rest on the valve stem of the gas exchange valve already arranged therein with the interposition of the valve lash adjuster. This results in a coupling between the actuator 10 and the valve 52.
  • an anchor position is reached, in which the electromagnet is approximately between the two anchor plates 16 and 18 to lie (not shown here). This represents the rest position.
  • asymmetrical choice of the two anchor plates 16 and 18 can be achieved by energizing the electromagnet when swinging an initial deflection, so that it finally at subsequent, suitable, alternating energization and Stromloswolf of the electromagnet to a Hin - And swinging of existing from anchor, valve and valve spring spring mass system comes.
  • the lower armature plate 16 moves back and forth in the cavity.
  • Both armatures 16, 18 can be held in their respective, near-end electromagnetic positions by continuous energization.
  • the cavity is mainly limited by the electromagnet actuator side.
  • valve or actuator elements in the cavity 58, a particularly small-sized unit of cylinder head and actuators can be achieved, which is the aim of the present invention.
  • the electromagnet 12 is located at least at its edge regions directly on the cylinder head, which is always well cooled.

Landscapes

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

Claims (16)

  1. Moteur à combustion interne comprenant un actionneur électromagnétique disposé sur une culasse (10) pour faire fonctionner une soupape d'échange des gaz (52), l'actionneur (10) comprenant un électroaimant (12) commulable disposé entre deux induits (16, 18) formés axialement à distance et mobiles en direction axiale, sur une tige d'induit commune (14),
    une cavité (58) étant formée dans la culasse dans laquelle est reçue la partie de l'actionneur (14) faisant saillie sur l'électroaimant (12),
    caractérisé en ce
    que l'électroaimant (12) limite au moins partiellement la cavité (58) du côté de l'actionneur au niveau de la zone de liaison entre l'actionneur (10) et une culasse (50).
  2. Moteur à combustion interne selon la revendication 1,
    caractérisé en ce que
    l'électroaimant (12) est couplé au moins partiellement directement sur la culasse et couplé thermiquement à celle-ci.
  3. Moteur à combustion interne selon la revendication 1 ou 2,
    caractérisé en ce que
    la tige d'induit (14) est installé dans l'électroaimant (12).
  4. Moteur à combustion interne selon la revendication 3,
    caractérisé par
    un ou au moins deux paliers (15) d'un seul tenant.
  5. Moteur à combustion interne selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce que
    la tige d'induit (14) est couplée indirectement ou directement à une tige de soupape de la soupape (52) installé dans la culasse.
  6. Moteur à combustion interne selon la revendication 5,
    caractérisé par
    un élément de compensation de jeu des soupapes entre la tige d'induit (14) et la tige de soupape.
  7. Moteur à combustion interne selon l'une quelconque des revendications 1 à 6,
    caractérisé par
    un premier ressort (54) précontraignant la soupape dans une position finale, est logé dans la cavité (58).
  8. Moteur à combustion interne selon la revendication 7,
    caractérisé en ce que
    le premier ressort (54) précontraint la soupape (52) en position de fermeture.
  9. Moteur à combustion interne selon la revendication 7 ou 8,
    caractérisé en ce que
    le premier ressort (54) s'appuie, d'une part, sur la tige de soupape et, d'autre part, sur la culasse.
  10. Moteur à combustion interne selon l'une quelconque des revendications 1 à 9,
    caractérisé par
    un second ressort (22) disposé à distance de la culasse par rapport à l'électroaimant,
  11. Moteur à combustion interne selon la revendication 10,
    caractérisé en ce que
    le second ressort (22) s'appuie contre l'induit (18) éloigné du cylindre.
  12. Moteur à combustion interne selon la revendication 9 ou 10,
    caractérisé en ce que
    le second ressort (22) s'appuie contre un siège de ressort (26) maintenu par un dispositif fileté, au moyen duquel un ajustement de l'actionneur est possible.
  13. Moteur à combustion interne selon l'une quelconque des revendications précédentes,
    caractérisé en ce qu'
    un capteur détecte des positions de l'induit à une extrémité de l'actionneur (10).
  14. Moteur à combustion interne selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'électroaimant comprend au moins un noyau de bobine avec une ou plusieurs faces polaires.
  15. Moteur à combustion interne selon l'une quelconque des revendications précédentes,
    caractérisé par
    les deux plaques d'induit dimensionnées différemment.
  16. Moteur à combustion interne selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    dans la partie supérieure de l'actionneur aboutit une conduite d'alimentation d'huile qui lubrifie par une alimentation d'huile effectuée goutte à goutte.
EP01996673A 2000-11-15 2001-10-23 Moteur a combustion interne comprenant un actionneur electromagnetique place sur une culasse Expired - Lifetime EP1334263B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10056572 2000-11-15
DE10056572A DE10056572A1 (de) 2000-11-15 2000-11-15 Brennkraftmaschine mit einem elektromagnetischen, auf einem Zylinderkopf angeordneten Aktor
PCT/EP2001/012229 WO2002040834A1 (fr) 2000-11-15 2001-10-23 Moteur a combustion interne comprenant un actionneur electromagnetique place sur une culasse

Publications (2)

Publication Number Publication Date
EP1334263A1 EP1334263A1 (fr) 2003-08-13
EP1334263B1 true EP1334263B1 (fr) 2006-06-14

Family

ID=7663368

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01996673A Expired - Lifetime EP1334263B1 (fr) 2000-11-15 2001-10-23 Moteur a combustion interne comprenant un actionneur electromagnetique place sur une culasse

Country Status (5)

Country Link
US (1) US6889638B2 (fr)
EP (1) EP1334263B1 (fr)
JP (1) JP4029036B2 (fr)
DE (2) DE10056572A1 (fr)
WO (1) WO2002040834A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006045713A1 (fr) * 2004-10-25 2006-05-04 Ciba Specialty Chemicals Holding Inc. Nanoparticules fonctionnalisees
US7344917B2 (en) * 2005-11-30 2008-03-18 Freescale Semiconductor, Inc. Method for packaging a semiconductor device
EP2816066A1 (fr) * 2013-06-19 2014-12-24 Basf Se Polyuréthane stabilisé peu émissif

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1391955A (en) * 1972-07-12 1975-04-23 British Leyland Austin Morris Actuating internal combustion engine poppet valves
DE3826978A1 (de) * 1988-08-09 1990-02-15 Meyer Hans Wilhelm Elektromagnetisch betaetigbare stellvorrichtung
EP0796402B1 (fr) * 1994-11-09 2000-05-31 Aura Systems, Inc. Soupape a armature a charniere et a commande electromagnetique
DE19623698A1 (de) * 1996-06-14 1997-12-18 Fev Motorentech Gmbh & Co Kg Verfahren zur Steuerung der Antriebe von Hubventilen an einer Kolbenbrennkraftmaschine
DE19706106A1 (de) * 1997-02-17 1998-08-27 Siemens Ag Ventileinrichtung eines Verbrennungsmotors
DE19712669C2 (de) 1997-03-26 2000-03-30 Daimler Chrysler Ag Elektromagnetisch gesteuertes Ventil
US6116570A (en) * 1998-03-30 2000-09-12 Siemens Automotive Corporation Electromagnetic actuator with internal oil system and improved hydraulic lash adjuster

Also Published As

Publication number Publication date
JP4029036B2 (ja) 2008-01-09
DE10056572A1 (de) 2002-05-23
EP1334263A1 (fr) 2003-08-13
US6889638B2 (en) 2005-05-10
JP2004514085A (ja) 2004-05-13
US20040020451A1 (en) 2004-02-05
DE50110175D1 (de) 2006-07-27
WO2002040834A1 (fr) 2002-05-23

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