EP0796981A1 - 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
EP0796981A1
EP0796981A1 EP97102043A EP97102043A EP0796981A1 EP 0796981 A1 EP0796981 A1 EP 0796981A1 EP 97102043 A EP97102043 A EP 97102043A EP 97102043 A EP97102043 A EP 97102043A EP 0796981 A1 EP0796981 A1 EP 0796981A1
Authority
EP
European Patent Office
Prior art keywords
cylinder head
actuator housing
axis
valve
longitudinal axis
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
EP97102043A
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German (de)
English (en)
Other versions
EP0796981B1 (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 actuating device for the stroke valves of a multi-cylinder internal combustion engine cylinder head having a longitudinal axis, with an actuator housing, within which an armature acting essentially on the stroke valve between two solenoid coils in the valve axis direction is arranged.
  • an electromagnetic actuating device for the stroke valves of a multi-cylinder internal combustion engine cylinder head having a longitudinal axis, with an actuator housing, within which an armature acting essentially on the stroke valve between two solenoid coils in the valve axis direction is arranged.
  • An electromagnetic globe valve actuation device for an internal combustion engine has immense advantages because of the freedom with regard to the valve timing, ie with regard to the respective opening and closing times of the globe valves, but relatively high forces have to be applied for actuation, in particular for opening the globe valve, which is a certain minimum size of Requires solenoids and armatures.
  • the known actuator housings are extremely difficult in a cylinder head common today, for example, to house an internal combustion engine driving a motor vehicle. This problem occurs even more intensely in internal combustion engines which have two or more intake valves or exhaust valves per cylinder.
  • 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.
  • the required base area which is required with regard to a minimum dimension of the magnetic coils
  • the extension transverse to the longitudinal axis of the cylinder head In principle, a rectangular cross section would now be possible, but the cylinder head machining then required would be too complex for this.
  • Another essential feature The invention is namely to be seen in the fact that the actuator housing with the outer walls extending essentially in the direction of the longitudinal axis of the cylinder head 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 armature In order to provide as large a base area as possible for the armature itself, which is located in the actuator housing, its geometry can be designed with the same considerations, so that the outer sides of the armature, which essentially extend in the direction of the cylinder head longitudinal axis, have the shape of a concentric shape have circular cylinder segment lying to the valve axis, while the outer sides of the armature, which extend transversely to the cylinder head longitudinal axis, are flat.
  • the armature is thus symmetrical in order to ensure an optimal force distribution or force effect during its movement caused by the magnet coil excitation.
  • the actuator housing can also be of symmetrical design, ie deviating from the shape specified above, according to which at least one of the axes transverse to the longitudinal axis of the cylinder head extending outer walls is flat, the two outer walls extending transversely to the longitudinal axis of the cylinder head can also be made flat.
  • the actuator housing can in principle be formed in several parts in order to enable simple assembly of this electromagnetic actuating device, i. H. in order to arrange the armature between the two magnet coils in a simple manner and then to join the individual housing parts around the armature and the magnet coils to form the actuator housing.
  • the actuator housing is essentially designed as a hollow cylindrical extruded part, in which the magnetic coils with assigned ferromagnetic coil cores are inserted.
  • the extruded part can be made of a light metal alloy similar to the material of the cylinder head, in order to avoid the build-up of stresses due to different thermal expansion or to ensure that the thermal head of the cylinder head and the actuator housing always bears against the cylinder head.
  • An electromagnetic actuating device for a lift valve 2, designated in its entirety by 1, is always arranged in an internal combustion engine cylinder head 3.
  • the actuator housing 4 is constructed in several parts, i. H. it consists of individual housing segments 4a, 4b, 4c, 4d, which are connected to one another in a suitable manner, not shown.
  • Two overhead housing segments 4a, 4b are arranged essentially on the left and right sides of the upper magnet coil 5, in the same way two lower housing segments 4c, 4d are provided on the left and right sides of the lower magnet coil 5.
  • the actuator housing 4 thus has four lateral outer walls 8a, 8b and 9a, 9b, namely in all the exemplary embodiments, cf. 1b, 2b, 3b.
  • a plurality of electromagnetic actuating devices 1 are arranged side by side in the cylinder head 3. Since this cylinder head 3 has two intake valves 6 and also two exhaust valves per cylinder 20, two actuating devices 1 are arranged directly next to each other for a cylinder 20, after which a group of actuating devices 1 for the next cylinder 20 of the cylinder head follows again at a certain distance.
  • This cylinder head thus has a longitudinal axis 10, in the direction of which the individual cylinders 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 extend in the direction of the longitudinal axis 10 of the cylinder head extend, while the outer walls 9a, 9b extend substantially transversely to the longitudinal axis 10.
  • the outer walls 8a, 8b of the actuator housing 4 each have the shape of a circular cylinder segment, the circular cylinder axis of which coincides with the valve axis 6.
  • the two outer walls 9a, 9b of each actuator housing 4, however, are flat. This makes it possible to arrange at least two actuator housings 4 lying directly next to one another with optimal use of installation space.
  • the outer walls 8a, 8b are each in the form of a circular cylinder segment.
  • the available installation space can be optimally used, ie the magnet coils 5 and each armature 11 can be made as large as possible in order to be able to easily generate the forces required for the movement of each globe valve 2.
  • the circular cylinder segment shape also enables simple machining of the cylinder head 3 or the walls 3 'of the cylinder head 3 which accommodate the actuator housing 4, such that the actuator housings 4 lie with their outer walls 8a, 8b essentially over the entire surface of the cylinder head 3.
  • the housing segments 4a, 4b, 4c, 4d which bear against the cylinder head 3, should be made of a 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 consist of a comparable light metal alloy in order to avoid stresses caused by different thermal expansions or to ensure that the actuator housing 4 always has its outer walls 8a, 8b abuts the cylinder head 3.
  • each solenoid 5 is used in its core 12.
  • FIGS. 1b, 2b also show an electrical plug contact 14 for supplying the magnetic coils 5 with electrical current.
  • FIGS. 3a to 3d shows a structure of the actuator housing 4 which differs from FIGS. 1, 2. No individual housing segments are provided here, but the actuator housing 4 is essentially designed as a hollow cylindrical extruded part, into which the magnetic coils 5 with the ferromagnetic coil cores 12 assigned to them are inserted from above and from below with the interposition of the armature 11.
  • 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 assembly of the actuator housing 4 to the two coil cores 12 and the integrated armature 11, while with the other two, also diagonally arranged fastening screws 13, this actuator housing 4 is screwed back to the cylinder head 3.
  • This design is characterized by an extremely simple, compact design that only requires a small number of parts.
  • this actuator housing 4 or extruded part can be prefabricated with a precise fit, so that no rework is required after assembly of the electromagnetic actuating device.
  • the armature 11 is advantageously guided exactly inside the extruded part or actuator housing 4 so that it cannot rotate about the lift valve axis 6.
  • its valve stem 2 ' is formed so long that it extends to the armature 11, so that the coupling rod 7 can be omitted without replacement.
  • All that is required is the so-called spring rod 7 ', which is also provided in the other exemplary embodiments according to FIGS. 1a, 2a on the other side of the armature 11 and carries a spring plate 17 located above the actuator housing 4, on which one counteracts the conventional valve closing spring 18' Valve opening spring 18 acts.
  • This design has the advantage that an otherwise required guide element for the coupling rod 7 can be omitted without replacement, since the valve stem 2 'is already guided through the usual valve guide 19 anyway. It should also be pointed out that, however, this and other details can be designed quite differently from the exemplary embodiments shown, without departing from the content of the claims.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
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 true EP0796981A1 (fr) 1997-09-24
EP0796981B1 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 (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0921280A1 (fr) * 1997-12-09 1999-06-09 Siemens Automotive Corporation Actionneur électromagnétique avec boítier en acier estampé
WO1999045242A1 (fr) * 1998-03-02 1999-09-10 Continental Isad Electronic Systems Gmbh & Co. Kg Moteur a combustion interne et procede de chauffage de parties d'un moteur a combustion interne
DE19819401C1 (de) * 1998-04-30 1999-09-16 Daimler Chrysler Ag Vorrichtung zum Betätigen von Gaswechselventilen
WO2000033329A1 (fr) * 1998-12-03 2000-06-08 Siemens Automotive Corporation Actionneur electromagnetique a connexion noyau feuillete-boitier amelioree
EP0982521A3 (fr) * 1998-08-21 2001-08-08 Bayerische Motoren Werke Aktiengesellschaft Actionneur électromagnétique pour l'actionnement d'une soupape avec un boítier sous forme de cadre, en particulier pour un moteur à combustion interne
EP1260687A1 (fr) * 2000-02-24 2002-11-27 Mikuni Corporation Moteur a combustion interne possedant un dispositif de regulation des gaz d'echappement
DE19825728C2 (de) * 1997-07-15 2003-07-17 Fev Motorentech Gmbh Elektromagnetischer Aktuator
EP1179119B1 (fr) * 1999-05-14 2003-09-17 Siemens Aktiengesellschaft Actionneur electromecanique
FR2846393A1 (fr) * 2002-10-25 2004-04-30 Toyota Motor Co Ltd Dispositif de soupape a commande par electro-aimant
EP1477637A3 (fr) * 2003-05-10 2010-01-27 Bayerische Motoren Werke Aktiengesellschaft Actionneur de course pour moteur à combustion interne avec commande électrique de soupape

Families Citing this family (18)

* 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
DE19753746A1 (de) * 1997-12-04 1999-06-10 Bayerische Motoren Werke Ag Elektromagnetischer Aktuator zum Antrieb eines dem Gaswechsel dienenden Hubventils einer Brennkraftmaschine
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
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
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
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
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
DE10202476B4 (de) * 2002-01-23 2005-09-29 Tyco Electronics Belgium Ec N.V. Elektromagnetische Spule mit Rechteckform
DE102007028600B4 (de) * 2007-06-19 2011-06-22 ETO MAGNETIC GmbH, 78333 Elektromagnetische Stellvorrichtung

Citations (6)

* 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
FR2192242A1 (fr) * 1972-07-12 1974-02-08 British Leyland Ltd
EP0197357A2 (fr) 1985-04-12 1986-10-15 Andreas Fleck Dispositif de réglage électromagnétique
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
EP0405189B1 (fr) 1989-06-27 1993-09-29 FEV Motorentechnik GmbH & Co. KG Dispositif électromagnétique de positionnement

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3826978A1 (de) * 1988-08-09 1990-02-15 Meyer Hans Wilhelm Elektromagnetisch betaetigbare stellvorrichtung

Patent Citations (6)

* 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
FR2192242A1 (fr) * 1972-07-12 1974-02-08 British Leyland Ltd
EP0197357A2 (fr) 1985-04-12 1986-10-15 Andreas Fleck Dispositif de réglage électromagnétique
EP0405189B1 (fr) 1989-06-27 1993-09-29 FEV Motorentechnik GmbH & Co. KG Dispositif électromagnétique de positionnement
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 (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19825728C2 (de) * 1997-07-15 2003-07-17 Fev Motorentech Gmbh Elektromagnetischer Aktuator
EP0921280A1 (fr) * 1997-12-09 1999-06-09 Siemens Automotive Corporation Actionneur électromagnétique avec boítier en acier estampé
WO1999045242A1 (fr) * 1998-03-02 1999-09-10 Continental Isad Electronic Systems Gmbh & Co. Kg Moteur a combustion interne et procede de chauffage de parties d'un moteur a combustion interne
DE19819401C1 (de) * 1998-04-30 1999-09-16 Daimler Chrysler Ag Vorrichtung zum Betätigen von Gaswechselventilen
EP0982521A3 (fr) * 1998-08-21 2001-08-08 Bayerische Motoren Werke Aktiengesellschaft Actionneur électromagnétique pour l'actionnement d'une soupape avec un boítier sous forme de cadre, en particulier pour un moteur à combustion interne
WO2000033329A1 (fr) * 1998-12-03 2000-06-08 Siemens Automotive Corporation Actionneur electromagnetique a connexion noyau feuillete-boitier amelioree
EP1179119B1 (fr) * 1999-05-14 2003-09-17 Siemens Aktiengesellschaft Actionneur electromecanique
EP1260687A1 (fr) * 2000-02-24 2002-11-27 Mikuni Corporation Moteur a combustion interne possedant un dispositif de regulation des gaz d'echappement
EP1260687A4 (fr) * 2000-02-24 2005-03-16 Mikuni Kogyo Kk Moteur a combustion interne possedant un dispositif de regulation des gaz d'echappement
FR2846393A1 (fr) * 2002-10-25 2004-04-30 Toyota Motor Co Ltd Dispositif de soupape a commande par electro-aimant
US7156366B2 (en) 2002-10-25 2007-01-02 Toyota Jidosha Kabushiki Kaisha Electromagnetically driven valve device
EP1477637A3 (fr) * 2003-05-10 2010-01-27 Bayerische Motoren Werke Aktiengesellschaft Actionneur de course pour moteur à combustion interne avec commande électrique de soupape

Also Published As

Publication number Publication date
JPH09256826A (ja) 1997-09-30
DE19611547A1 (de) 1997-09-25
DE59702391D1 (de) 2000-11-02
ES2151690T3 (es) 2001-01-01
EP0796981B1 (fr) 2000-09-27

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