EP0796981B1 - Dispositif de commande électromagnétique pour soupape de moteur à combustion interne - Google Patents

Dispositif de commande électromagnétique pour soupape de moteur à combustion interne Download PDF

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Publication number
EP0796981B1
EP0796981B1 EP97102043A EP97102043A EP0796981B1 EP 0796981 B1 EP0796981 B1 EP 0796981B1 EP 97102043 A EP97102043 A EP 97102043A EP 97102043 A EP97102043 A EP 97102043A EP 0796981 B1 EP0796981 B1 EP 0796981B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
cylinder head
longitudinal axis
actuator housing
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
EP97102043A
Other languages
German (de)
English (en)
Other versions
EP0796981A1 (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
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 EP0796981A1 publication Critical patent/EP0796981A1/fr
Application granted granted Critical
Publication of EP0796981B1 publication Critical patent/EP0796981B1/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 electromagnetic actuator for the Lift valves of a multi-cylinder internal combustion engine cylinder head having a longitudinal axis, with an actuator housing within which an essentially between two solenoids in the valve axis direction Armature is slidably acting on the lift valve.
  • an electromagnetic actuator for the Lift valves of a multi-cylinder internal combustion engine cylinder head having a longitudinal axis, with an actuator housing within which an essentially between two solenoids in the valve axis direction Armature is slidably acting on the lift valve.
  • An electromagnetic lift valve operating device for an internal combustion engine has because of the freedom in valve timing, i.e. H. with regard to the respective opening and closing times of the globe valves immense advantages, however, have to be operated, especially to open of the globe valve relatively high forces are applied, which is a certain Requires minimum size of solenoid coils and armature.
  • arises in the magnetic coils when operating the globe valves, in particular at higher operating frequencies relatively much heat loss, which are dissipated in a suitable manner got to. A pure convection cooling of the actuator housing in the surrounding Air is not sufficient for this.
  • the object of the invention is therefore to demonstrate measures to remedy the problem described.
  • the outer walls of the actuator housing which extend essentially in the direction of the cylinder head longitudinal axis, have the shape of a circular cylinder segment, the circular cylinder axis of which coincides with the valve axis, and lie essentially over the entire surface of the cylinder head, while at least one of them Extending transversely to the cylinder head longitudinal axis outer walls is flat.
  • the actuators can be arranged relatively close to each other due to the flat outer wall, while the required base area, which is required with regard to a minimum dimension of the magnetic coils, can be provided by the extension transverse to the longitudinal axis of the cylinder head.
  • a rectangular cross section would now be possible, but the cylinder head machining then required would be too complex for this.
  • a further essential feature of the invention can be seen in the fact that the actuator housing, with the outer walls extending essentially in the direction of the cylinder head longitudinal axis, rests essentially over the entire surface of the cylinder head. This enables good heat dissipation via the cylinder head wall, which itself is liquid-cooled, for example.
  • the actuator housing can in principle be of multiple parts in order to a simple assembly of this electromagnetic actuator to enable d. H. to easily anchor first to be arranged between the two solenoids and then the individual Housing parts around the armature and the solenoids to the actuator housing put together.
  • the extrusion can be made of a light metal alloy similar to the material of the cylinder head be made to build up tension by different Avoid thermal expansion or to ensure that in the event of thermal expansion of the cylinder head and the actuator housing the latter always rests on the cylinder head.
  • the same components with the same reference numbers are used in all of the figures designated. Is always one in its entirety designated 1 Actuating device for a lift valve 2 in an internal combustion engine cylinder head 3 arranged.
  • Actuator housing 4 formed in several parts, d. H. it consists of individual Housing segments 4a, 4b, 4c, 4d, in a suitable manner, not shown are interconnected.
  • Two overhead housing segments 4a, 4b are essentially on the left side and on the right side of the upper magnet coil 5 arranged, in the same way, two lower housing segments 4c, 4d in essentially provided on the left and right sides of the lower magnet coil 5.
  • the actuator housing 4 thus four lateral outer walls 8a, 8b and 9a, 9b on all of them Exemplary embodiments, cf. 1b, 2b, 3b.
  • FIGS. 1b, 2b, 3b there are several electromagnetic actuating devices 1 arranged in the cylinder head 3 side by side. Because of this Cylinder head 3 two intake valves 6 and two exhaust valves per cylinder 20 has two actuators for each cylinder 20 1 arranged directly next to each other, after which under one a certain distance again a group of two actuators 1 for the next cylinder 20 of the cylinder head follows.
  • This cylinder head thus has a longitudinal axis 10, in the direction of which the individual Cylinder 20 are arranged side by side.
  • the individual outer walls of the Actuator housing 4 are now designated such that the outer walls 8a, 8b essentially in the direction of the cylinder head longitudinal axis 10 extend while the outer walls 9a, 9b substantially transverse to Extend longitudinal axis 10.
  • the outer walls 8a, 8b of the actuator housing 4 each have the shape of a circular cylinder segment, whose circular cylinder axis coincides with the valve axis 6.
  • the two Outer walls 9a, 9b of each actuator housing 4 are flat. This enables at least two actuator housings 4 to be optimal Arrange space directly next to each other.
  • two actuator housings per cylinder must be arranged side by side, is sufficient, only one of the two outer walls 9a, 9b, namely the one that faces the adjacent actuator housing 4, to train just while the cylinder-specific group of two this actuator housing 4 outer wall one of the flat shape may have a different shape.
  • the shape of the outer walls 8a, 8b of a circular cylinder segment is the shape of the outer walls 8a, 8b of a circular cylinder segment.
  • This allows the one available Construction space can be used optimally, d. H. the solenoids 5 and each armature 11 can be made as large as possible to accommodate the movement each lift valve to be able to easily generate 2 required forces.
  • the circular cylindrical segment shape also enables simple machining of the cylinder head 3 or the actuator housing 4 receiving Walls 3 'of this cylinder head 3, such that the actuator housing 4 with their outer walls 8a, 8b essentially over the entire surface of the cylinder head 3 issue.
  • the housing segments 4a, 4b, 4c, 4d, that are in contact with the cylinder head 3 should be made of one material, whose thermal expansion behavior is very similar to that of the cylinder head 3 is.
  • This cylinder head 3 usually consists of a suitable light metal alloy, in this case, the housing segments 4a to 4d should also a comparable light metal alloy to withstand tensions to avoid by different thermal expansions or to ensure that the actuator housing 4 always with its outer walls 8a, 8b bears against the cylinder head 3.
  • each solenoid 5 is used in its core 12.
  • each actuator housing 4 is attached to the cylinder head 3.
  • an electrical plug contact 14 can also be seen for supplying the magnetic coils 5 with electrical current.
  • a structure of the actuator housing 4 which differs from FIGS. 1, 2 shows the embodiment of FIGS. 3a to 3d.
  • the actuator housing 4 is in essentially designed as a hollow cylindrical extrusion into which above and below, the magnetic coils 5 with the interposition of the armature 11 are used with them assigned ferromagnetic coil cores 12.
  • the latter have a collar 12 'in the outer end faces, so that each coil core 12 rests on the end face of the actuator housing 4.
  • Two diagonally arranged locking screws 16 then connect this entire one Unit of the actuator housing 4 with the two coil cores 12 and the integrated anchor 11, while with the other two, also diagonally arranged fastening screws 13 of this actuator housing 4 is screwed back to the cylinder head 3.
  • This design stands out thus characterized by an extremely simple, compact design that only requires a small number of parts.
  • This can advantageously Actuator housing 4 or extrusion are prefabricated to fit, so that after assembling the electromagnetic actuator no rework is required.
  • the anchor 11 is advantageously exactly inside the extrusion or actuator housing 4, see above that he can not twist about the lift valve axis 6.
  • valve stem 2 ' is formed so long that it extends to the anchor 11 so that the coupling rod 7 can be omitted without replacement. All that is required is also that in the other exemplary embodiments 1a, 2a on the other side of the armature 11 provided so-called spring rod 7 ', a spring plate lying above the actuator housing 4 17 carries, on which one of the usual valve closing spring 18 'counteracting Valve opening spring 18 acts.
  • This design has the advantage that a otherwise required guide element for the coupling rod 7 without replacement can be omitted, since the valve stem 2 'already through the usual valve guide 19 is performed. It should be pointed out that, however this and other details are quite different from the exemplary embodiments shown can be designed without the content of the claims leave.

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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 de soupapes à mouvement linéaire d'une culasse (3) de moteur à combustion interne comprenant plusieurs cylindres alignés sur un axe longitudinal (10), à un boítier d'actionneur (4) dans lequel un induit (11) agissant sur la soupape (2) est coulissant essentiellement entre deux bobines électromagnétiques (5) dans la direction de l'axe (6) de la soupape,
    caractérisé en ce que
    les parois extérieures (8a, 8b) du boítier d'actionneur (4) s'étendant principalement dans la direction de l'axe longitudinal (10) de la culasse, ont la forme d'un segment de cylindre dont l'axe correspond à l'axe de soupape (6) et s'appuient principalement de toute leur surface contre la culasse (3), alors qu'au moins l'une des parois extérieures (9a, 9b) du boítier (4) qui s'étend transversalement à l'axe longitudinal (10) de la culasse est plane.
  2. Dispositif de commande électromagnétique selon la revendication 1,
    caractérisé en ce que
    les côtés extérieurs de l'induit (11) s'étendant principalement dans la direction de l'axe longitudinal (10) de la culasse ont la forme d'un segment de cylindre circulaire concentrique à l'axe (6) de la soupape, alors que les côtés extérieurs de l'induit (11) qui s'étendent transversalement à l'axe longitudinal de la culasse sont plans.
  3. Dispositif de commande électromagnétique selon l'une des revendications 1 ou 2,
    caractérisé en ce que
    le boítier (4) est principalement une pièce cylindrique creuse, extrudée logeant les bobines magnétiques (5) et les noyaux de bobine (12) ferromagnétiques, associés.
EP97102043A 1996-03-23 1997-02-10 Dispositif de commande électromagnétique pour soupape de moteur à combustion interne Expired - Lifetime EP0796981B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19611547A DE19611547A1 (de) 1996-03-23 1996-03-23 Elektromagnetische Betätigungsvorrichtung für Brennkraftmaschinen-Hubventile
DE19611547 1996-03-23

Publications (2)

Publication Number Publication Date
EP0796981A1 EP0796981A1 (fr) 1997-09-24
EP0796981B1 true EP0796981B1 (fr) 2000-09-27

Family

ID=7789219

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97102043A Expired - Lifetime EP0796981B1 (fr) 1996-03-23 1997-02-10 Dispositif de commande électromagnétique pour soupape de moteur à combustion interne

Country Status (4)

Country Link
EP (1) EP0796981B1 (fr)
JP (1) JPH09256826A (fr)
DE (2) DE19611547A1 (fr)
ES (1) ES2151690T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10202476A1 (de) * 2002-01-23 2003-08-07 Tyco Electronics Belgium Ec Nv Elektromagnetische Spule mit Rechteckform

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19646937C2 (de) * 1996-11-13 2000-08-31 Bayerische Motoren Werke Ag Elektromagnetische Betätigungsvorrichtung für ein Brennkraftmaschinen-Hubventil
DE29712502U1 (de) * 1997-07-15 1997-09-18 FEV Motorentechnik GmbH & Co. KG, 52078 Aachen Elektromagnetischer Aktuator mit Gehäuse
DE19753746A1 (de) * 1997-12-04 1999-06-10 Bayerische Motoren Werke Ag Elektromagnetischer Aktuator zum Antrieb eines dem Gaswechsel dienenden Hubventils einer Brennkraftmaschine
US6157277A (en) * 1997-12-09 2000-12-05 Siemens Automotive Corporation Electromagnetic actuator with improved lamination core-housing connection
US6094118A (en) * 1997-12-09 2000-07-25 Siemens Automotive Corporation Electromagnetic actuator with stamped steel housing
DE19756095C2 (de) * 1997-12-17 2001-11-22 Telefunken Microelectron Vorrichtung zum Betrieb von Aktoren zur elektromagnetischen Ventilsteuerung bei Brennkraftmaschinen
DE19757505C2 (de) * 1997-12-23 2000-02-10 Daimler Chrysler Ag Betätigungsvorrichtung für ein Gaswechselventil in einer Brennkraftmaschine
DE19808703C1 (de) * 1998-03-02 1999-09-23 Isad Electronic Sys Gmbh & Co Verbrennungsmotor sowie Verfahren zum Beheizen von Teilen eines Verbrennungsmotors
DE19819401C1 (de) * 1998-04-30 1999-09-16 Daimler Chrysler Ag Vorrichtung zum Betätigen von Gaswechselventilen
DE19821550C1 (de) * 1998-05-14 1999-09-16 Daimler Chrysler Ag Zylinderkopf
JP3907835B2 (ja) * 1998-06-25 2007-04-18 日産自動車株式会社 車両用エンジンの動弁装置
DE19831250C1 (de) * 1998-07-11 1999-10-07 Daimler Chrysler Ag Vorrichtung zum Betätigen eines Gaswechselventils mit einem elektromagnetischen Aktuator
DE19924417C2 (de) * 1998-07-29 2000-11-30 Daimler Chrysler Ag Aktor zur elektromagnetischen Ventilsteuerung
DE19838102A1 (de) * 1998-08-21 2000-02-24 Bayerische Motoren Werke Ag Rahmenartiges Gehäuse eines elektromagnetischen Aktuators zur Ventilbetätigung, insbesondere in Brennkraftmaschinen
DE19907850C2 (de) * 1999-02-24 2002-08-01 Siemens Ag Mehrzylindrige Brennkraftmaschine mit von elektromagnetischen Aktuatoren betätigten Gaswechsel-Hubventilen
JP2000283316A (ja) 1999-03-29 2000-10-13 Honda Motor Co Ltd 電磁弁駆動装置
DE19922425C1 (de) * 1999-05-14 2000-10-19 Siemens Ag Elektromechanischer Stellantrieb und seine Montage z.B. als Gaswechselventil in den Zylinderkopf einer Brennkraftmaschine
DE19926413C2 (de) 1999-06-10 2002-12-05 Bayerische Motoren Werke Ag Elektromagnetischer Aktuator zur Betätigung eines Brennkraftmaschinen-Hubventils
DE19947924C2 (de) * 1999-10-06 2003-01-23 Daimler Chrysler Ag Elektromagnetische Betätigungseinrichtung für ein Gaswechselventil in einer Brennkraftmaschine
DE19961609A1 (de) * 1999-12-21 2001-07-12 Daimler Chrysler Ag Verfahren zur Herstellung von Aktoren zur elektromagnetischen Betätigung von eine Ventilfeder aufweisenden Ventilen
DE19961608A1 (de) * 1999-12-21 2001-07-26 Daimler Chrysler Ag Aktor zur elektromagnetischen Ventilsteuerung
JP2001234743A (ja) * 2000-02-24 2001-08-31 Mikuni Corp 内燃機関の排気制御装置
DE10008958A1 (de) * 2000-02-25 2001-08-30 Daimler Chrysler Ag Verfahren zum Verbinden einer Ankerplatte mit mindestens einem Stößel eines Aktors zur elektromagnetischen Ventilsteuerung
JP2003077722A (ja) * 2001-08-31 2003-03-14 Mitsubishi Electric Corp 積層コアの形成方法および電磁式バルブ駆動装置
JP4110920B2 (ja) * 2002-10-25 2008-07-02 トヨタ自動車株式会社 電磁駆動弁装置
DE10321017A1 (de) * 2003-05-10 2004-12-02 Bayerische Motoren Werke Ag Hubaktuator für Verbrennungsmotoren mit elektrischem Ventiltrieb
DE102007028600B4 (de) * 2007-06-19 2011-06-22 ETO MAGNETIC GmbH, 78333 Elektromagnetische Stellvorrichtung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1474842A (en) * 1921-11-14 1923-11-20 Louis J Misuraca Internal-combustion engine
GB1391955A (en) * 1972-07-12 1975-04-23 British Leyland Austin Morris Actuating internal combustion engine poppet valves
DE3513107A1 (de) 1985-04-12 1986-10-16 Fleck, Andreas, 2000 Hamburg Elektromagnetisch arbeitende stelleinrichtung
DE3826978A1 (de) * 1988-08-09 1990-02-15 Meyer Hans Wilhelm Elektromagnetisch betaetigbare stellvorrichtung
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
DE4225329A1 (de) * 1992-07-31 1993-02-18 Dreyer Dietmar Ventilansteuerungseinrichtung fuer den einsatz in verbrennungsmotoren

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10202476A1 (de) * 2002-01-23 2003-08-07 Tyco Electronics Belgium Ec Nv Elektromagnetische Spule mit Rechteckform
DE10202476B4 (de) * 2002-01-23 2005-09-29 Tyco Electronics Belgium Ec N.V. Elektromagnetische Spule mit Rechteckform

Also Published As

Publication number Publication date
JPH09256826A (ja) 1997-09-30
EP0796981A1 (fr) 1997-09-24
ES2151690T3 (es) 2001-01-01
DE59702391D1 (de) 2000-11-02
DE19611547A1 (de) 1997-09-25

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