EP1334263A1 - 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

Info

Publication number
EP1334263A1
EP1334263A1 EP01996673A EP01996673A EP1334263A1 EP 1334263 A1 EP1334263 A1 EP 1334263A1 EP 01996673 A EP01996673 A EP 01996673A EP 01996673 A EP01996673 A EP 01996673A EP 1334263 A1 EP1334263 A1 EP 1334263A1
Authority
EP
European Patent Office
Prior art keywords
internal combustion
combustion engine
actuator
engine according
cylinder head
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
EP01996673A
Other languages
German (de)
English (en)
Other versions
EP1334263B1 (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

Links

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.
  • Such an actuator is known from DE 197 12 669 A1.
  • An electromagnet is arranged between two axially spaced armatures formed on the valve tappet.
  • a coil core of the electromagnet has one or more pole faces on the respective sides facing the armatures.
  • a force acting on the respective nearest armature predominates.
  • an alternating interruption and energization of the excitation circuit can be used to move the actuator back and forth and thus to open and close the gas exchange valve coupled to it.
  • the overall height is problematic when arranging such actuators on the cylinder heads. If the actuators are too high, space problems can arise in the engine compartment. In particular, problems can arise when installing the vehicle and driving the engine into the engine compartment.
  • the aim of the present invention is to provide an internal combustion engine which is particularly compact.
  • a cavity is formed in the cylinder head in which a part of the actuator is accommodated.
  • this part is at least partially the armature of the actuator on the cylinder head side, the electromagnet lying between the armatures at least partially delimiting the cavity mentioned on the actuator side. Due to the formation of the cavity mentioned and a possible displacement of actuator parts into the cavity and thus in the direction of the cylinders, the overall height can be reduced to a significant extent, which overall leads to a more compact internal combustion engine, particularly when considering a large number of actuators to be assembled ,
  • a favorable heat dissipation can be achieved by placing the electromagnet directly on the cylinder head, so that the actuator is easy to cool.
  • the armature shaft is mounted in the electromagnet itself. It is therefore only important to fix the electromagnet in relation to the cylinder head.
  • the armature stem of the actuator can be directly or indirectly coupled to the valve stem of the valve, for example with the interposition of a valve clearance compensation element.
  • valve spring can pretension the valve into an end position, for example the closed position.
  • the valve spring is preferably supported on the one hand on the valve stem and on the other hand on the cylinder head. This enables a simple installation of the valve.
  • a second spring can be integrated in the actuator and can be arranged with respect to the cylinder head.
  • the simple structure of this embodiment is promoted if this actuator spring is supported directly against the armature remote from the cylinder head.
  • the actuator in particular the two anchor plates, can also be adjusted with respect to its position relative to the electromagnet.
  • the electromagnet can consist of a coil core with one or more pole faces, as is known for example from DE 197 12 669 A1.
  • Figure 1 is a sectional view of a unit consisting of two electromagnetic valves which are arranged on a cylinder head
  • Figure 2 is a sectional view of a designed according to the invention
  • the actuator 10 comprises an electromagnet 12, which is shown here only as a unit.
  • the electromagnet 12 can comprise one or more pole faces on the sides facing the respective armatures as well as 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.
  • two armature plates 16 and 18 are axially spaced from one another, on opposite sides of the electromagnet 12 respectively.
  • the armature plate 16 is made smaller than the armature plate 18.
  • the asymmetry is at the same distance from the electromagnet 12 important for the actuator to vibrate when the internal combustion engine starts, since the force on the upper anchor plate 18 is then greater than that on the lower anchor plate 16.
  • the distance between the two anchor plates 16 and 18 is greater than the thickness of the electromagnet 12, so that a back and forth movement is guaranteed in a certain area.
  • the electromagnet 12 is accommodated in a housing 20 such that, together with the housing 20, it essentially limits the actuator on the side of the small armature plate 16.
  • the armature plate 16 thus projects together with the armature shaft 14 projecting on this side the volume limited by the electromagnet 12 and the housing 20.
  • a bore is formed which is coaxial with the bore in the electromagnet 12 and has an internal thread into which a screwing device 26 can be screwed.
  • the screw 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 valve seat arranged directly on the armature plate 18.
  • the actuator spring 22 serves to preload the gas exchange valve in
  • the screwing device 26 also includes a central, stepped bore into which a displacement sensor 28 (not shown in the present case) is inserted.
  • the displacement sensor 28 in turn comprises a central bore arranged coaxially to the cylinder bore, through which an extension of the armature shaft 14 extends.
  • the electromagnet 12 is energized via supply lines, of which only one is shown here with reference number 30.
  • Reference number 23 denotes a so-called oil gallery. This is a supply line for lubricating oil, which ends in the area of the upper anchor plate 18 and ensures minimal lubrication by the 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 received.
  • the valve 52 is mounted in the cylinder head and is located opposite the actuator 12 into the cavity 58.
  • a spring seat 56 is arranged at the upper end of the valve 52, against which a further spring, namely the valve spring 54, is supported.
  • the valve spring 54 is supported against a spring seat directly on the cylinder head and biases the valve in its closed direction.
  • a valve lash adjuster is provided at the upper end of the valve.
  • the armature plate 16 is now inserted into the cavity 58 together with the armature shaft 14 in such a way that the front end of the armature shaft comes to rest on the valve shaft of the gas exchange valve already arranged therein, with the valve clearance compensation element being interposed. There is thus a coupling between the actuator 10 and the valve 52.
  • An appropriate dimensioning and arrangement of the springs 22 and 54 or the corresponding spring seats achieve an armature position in which the electromagnet comes to lie approximately between the two armature plates 16 and 18 (not shown here). This represents the rest position.
  • the cavity is mainly delimited by the electromagnet on the actuator side.
  • valve or actuator elements in the cavity 58, a particularly small unit of cylinder head and actuators can be achieved, which is the aim of the present invention.
  • the electromagnet 12 is at least at its edge areas directly on the cylinder head, which is always well cooled. This optimal thermal coupling allows good heat dissipation of the heat generated in the actuator, in particular in the electromagnet 12 itself, to be achieved without special cooling measures having to be taken for the actuator.

Landscapes

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

Abstract

L'invention concerne un moteur à combustion interne comprenant un actionneur électromagnétique placé sur une culasse et destiné au fonctionnement d'une soupape d'échange gazeux. L'actionneur comprend un électroaimant commutable qui est placé entre deux induits axialement distants et implantés sur une tige commune. Pour obtenir un moteur à combustion interne compact, la culasse présente une cavité qui abrite au moins partiellement l'induit côté culasse de l'actionneur et l'électroaimant délimite la cavité au moins partiellement côté actionneur.
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
DE10056572A DE10056572A1 (de) 2000-11-15 2000-11-15 Brennkraftmaschine mit einem elektromagnetischen, auf einem Zylinderkopf angeordneten Aktor
DE10056572 2000-11-15
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 true EP1334263A1 (fr) 2003-08-13
EP1334263B1 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
EP2028228B1 (fr) * 2004-10-25 2018-12-12 IGM Group B.V. Nanoparticules fonctionnalisées
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
WO1997017561A1 (fr) * 1994-11-09 1997-05-15 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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0240834A1 *

Also Published As

Publication number Publication date
US20040020451A1 (en) 2004-02-05
US6889638B2 (en) 2005-05-10
DE10056572A1 (de) 2002-05-23
JP2004514085A (ja) 2004-05-13
EP1334263B1 (fr) 2006-06-14
WO2002040834A1 (fr) 2002-05-23
JP4029036B2 (ja) 2008-01-09
DE50110175D1 (de) 2006-07-27

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