EP1138883B1 - Commande des soupapes de moteur à combusion pour un actionneur électromagnétique, equipé avec des ressorts à gaz - Google Patents

Commande des soupapes de moteur à combusion pour un actionneur électromagnétique, equipé avec des ressorts à gaz Download PDF

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Publication number
EP1138883B1
EP1138883B1 EP00710039A EP00710039A EP1138883B1 EP 1138883 B1 EP1138883 B1 EP 1138883B1 EP 00710039 A EP00710039 A EP 00710039A EP 00710039 A EP00710039 A EP 00710039A EP 1138883 B1 EP1138883 B1 EP 1138883B1
Authority
EP
European Patent Office
Prior art keywords
armature
yoke
gas
switching
projection
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
EP00710039A
Other languages
German (de)
English (en)
Other versions
EP1138883A2 (fr
EP1138883A3 (fr
Inventor
Hans-Jörg Steffens
Frank Meissner
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 EP1138883A2 publication Critical patent/EP1138883A2/fr
Publication of EP1138883A3 publication Critical patent/EP1138883A3/fr
Application granted granted Critical
Publication of EP1138883B1 publication Critical patent/EP1138883B1/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
    • F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
    • F01L1/462—Valve return spring arrangements
    • F01L1/465—Pneumatic arrangements
    • 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
    • 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
    • F01L2301/00—Using particular materials

Definitions

  • the invention relates according to the preamble of claim 1 to a Gas exchange valve control for internal combustion engines with one with gas springs equipped electromagnetic actuator, in which one with the gas exchange valve drive-connected armature between hub-spaced solenoid is arranged oscillating against restoring forces of the gas springs, wherein the means of the serving as a separating piston armature separate gas springs in dependence controlled by load ranges of the internal combustion engine Gaszumess valves and gas release valves are used to adjust adjusted spring characteristics and Furthermore, a damped stop of the separating piston or the armature at the respective Switching magnet.
  • Such an actuator is the subject of the German patent application P 100 03 116, (EP-A-1120548, published August 1, 2001), with the objective, with a simple structure depending on load ranges the engine to achieve variably adapted spring characteristics, and further, independently of the respective spring characteristic, a controlled one To achieve stop damping.
  • the invention is based on the object, the generic actuator both in its mechanical structure as well as in its electromagnetic training to improve so that the energy consumption is reduced and the anchor with increased Magnetic force is tightened.
  • the inventive electromagnetic design of the actuator is for each switching magnet advantageously achieved a shortened magnetic circuit, wherein the shortened magnetic circuit at least in the initial phase of the acceleration of the anchor from the holding position on one of the magnetic solenoids Resistance in the magnetic circuit by only one air gap essential is reduced. This can regardless of the applied gas pressure at the anchor this be accelerated higher, which in an advantageous manner in particular to achieve high speeds of the internal combustion engine is advantageous.
  • the shortened magnetic circuit of each switching magnet is special advantageous to carry out their cores Gottsymetrisch laminated to reduce the Scatter losses or to reduce the eddy current losses, as for example described and shown in DE 35 00 530 A1.
  • a not-shown gas exchange valve control 1 for not shown Internal combustion engine comprises an actuator 2 with gas springs 3 and 4, wherein one with the gas exchange valve 5 in drive connection standing armature 6 between hubbeabstandeten Solenoids 7 and 8 against restoring forces of the gas springs 3 and 4 is arranged oscillating.
  • Next serve by means of formed as a separating piston Ankers 6 separate gas springs 3 and 4 over depending on load ranges the engine controlled Gaszumess valves 9 and 9 'and Gas discharge valves 10, 10 'of the determination of adapted spring characteristics and further a damped stop of the separating piston or the armature 6 at the respective Switching magnets 7, 8.
  • each shift solenoid 7, 8 has a Coil 13 in a relative to a guide shaft 14 of the armature 6 or the gas exchange element 5 centrally symmetric laminated core 7 ', 8', each core 7 ', 8 'with a peripheral groove provided in one of the armature-side end face 15 16 arranged coil 13 is formed on the outside circumferentially flush to flat edition one of the solenoids 7 and 8 including an armature displacement 17 enclosing yoke 18, which is located substantially midway between the Solenoids 7, 8 at the anchor 6 in the respective holding position increased Acceleration force causing device 19 carries.
  • the device 19 is inward with clearance for the armature 6 directed projection 20 on a cylindrical solenoids 7, 8 enclosing Yoke 18 of magnetizable, low-hysteresis material, wherein the Projection 20 with its free inner peripheral surface 21 and with flush adjoining, non-magnetizable Abdeckringe 22 to both solenoids 7, 8 den the gas spring 3, 4 comprehensive anchor capacity 17 limited, wherein the inner peripheral surface 21 of the projection 20 as an entry / exit surface ankernah extending Magnetic lines is used.
  • projection 20 is for each of the switching magnets 7 and 8, a shortened magnetic circuit achieved with in the Initial phase of anchor acceleration just anchored by an air gap extending magnetic lines.
  • the wall thickness "s" of the yoke 18 designed as a cylindrical housing as a section of a magnetic circle corresponding to the magnetic line density in the centrally symmetric laminated cores 7 'and 8' chosen, wherein the projection 20 one of the yoke wall thickness "s” corresponding thickness "d” or the inner peripheral surface 21 of the projection 20 has a wall thickness "s" corresponding height.
  • the yoke 18 is preferably made a ferromagnetic material formed.
  • cover rings 22 made of a non-magnetizable Light metal compound made to the emerging from the inner circumferential surface 21 or bundled in these entering magnetic lines in the magnetic circuit to have progress.
  • each switching magnet 7, 8 has a coil side associated in the housing-like yoke 18 gas-tight arranged end plate 23, the in an anchor-side groove 24, the elastomeric element 11 carries and with a concentric Recess 25 forms a portion of the damping chamber 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Claims (5)

  1. Commande de soupapes de distribution des gaz pour moteurs à combustion interne comprenant un actionneur électromagnétique équipé de ressorts pneumatiques,
    dans lequel un induit (6) qui est en liaison motrice avec la soupape de distribution des gaz (5) est monté pour osciller entre des électro-aimants de commande (7, 8) espacés de la longueur d'une course, à l'encontre de forces de rappel des ressorts pneumatiques,
    les ressorts pneumatiques (3, 4) séparés au moyen de l'induit (6) qui sert de piston séparateur servent à l'ajustement de caractéristiques élastiques adaptées, par l'intermédiaire de soupapes d'admission des gaz (9, 9') et de soupapes d'échappement des gaz (10, 10') qui sont commandées en fonction de plages de charge du moteur à combustion interne et, en outre,
    à amortir le choc de butée du piston séparateur, ou de l'induit (6), sur l'électro-aimant de commande (7, 8) concerné,
    caractérisée en ce que
    l'induit (6) est réalisée de façon à séparer les ressorts pneumatiques sans garnitures d'étanchéité glissantes, et
    dans chaque position de retenue contre un électro-aimant de commande (7, 8) , il limite une chambre d'amortissement (12) au moyen d'un élément (11) élastique à la façon du caoutchouc, et placé en interposition,
    tandis qu'en outre, chaque électro-aimant de commande (7, 8) présente une bobine (13) dans un noyau (7', 8') feuilleté avec symétrie centrale par rapport à une tige de guidage (14) de l'induit (6) ou de la soupape de distribution des gaz (5) et,
    le long de sa périphérie extérieure, chaque noyau (7', 8') est à l'affleurement d'une bobine (13) disposée dans une gorge périphérique (16) adjacente à la face frontale (15) côté induit, pour permettre à une culasse (18) qui entoure les électro-aimants de commande (7, 8), y compris l'espace de déplacement de l'induit (17) de porter par surface intégrale,
    laquelle culasse porte, sensiblement au milieu entre les électro-aimants de commande (7, 8), un dispositif (19) qui engendre une plus grande force d'accélération dans l'induit situé dans la position de retenue.
  2. Actionneur selon la revendication 1,
    caractérisé en ce que
    le dispositif (19) est une saillie (20) dirigée vers l'intérieur, avec dégagement par rapport à l'induit (6), prévue sur une culasse (18) qui entoure des aimants de commande cylindriques (7, 8), et qui est faite d'une matière aimantable, à faible hystérésis, tandis que,
    par sa surface circonférentielle intérieure libre (21) et avec des bagues de recouvrement non aimantables (22) qui y font suite en y affleurant, la saillie (20) limite l'espace de déplacement (17) de l'induit qui comprend les ressorts pneumatiques (3, 4) par rapport aux deux aimants de commande (7, 8) et
    la surface périphérique intérieure (21) sert de surface d'entée/sortie pour les lignes de force qui passent à proximité de l'induit.
  3. Actionneur selon la revendication 2,
    caractérisé en ce que
    l'épaisseur de paroi (s) de la culasse (18) en forme de boítier cylindrique, qui forme une partie d'un circuit magnétique, est choisie en fonction de la densité de lignes de force dans les noyaux (7', 8') feuilleté avec symétrie centrale, et
    la saillie (20) présente une épaisseur (d) qui correspond à l'épaisseur de paroi (s) de la culasse.
  4. Actionneur selon la revendication 2 et 3,
    caractérisé en ce que
    la culasse (18) est faite d'une matière ferromagnétique, et
    les bagues de recouvrement (22) situées de part et d'autre de la saillie (20) sont faites d'un alliage léger non aimantable.
  5. Actionneur selon une des revendications 1 à 4,
    caractérisé en ce que
    à chaque électro-aimant de commande (7, 8), est associée, côté bobine, une plaque frontale (23) montée à joint étanche dans la culasse (18) en forme de boítier, et
    qui porte l'élément (11) élastique à la façon du caoutchouc dans une gorge (24) côté induit et forme une partie de la chambre d'amortissement au moyen d'une dépression concentrique (25).
EP00710039A 2000-02-25 2000-12-13 Commande des soupapes de moteur à combusion pour un actionneur électromagnétique, equipé avec des ressorts à gaz Expired - Lifetime EP1138883B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10008991A DE10008991A1 (de) 2000-02-25 2000-02-25 Gaswechselventil-Steuerung für Brennkraftmaschinen mit einem mit Gasfedern ausgerüsteten elektromagnetischen Aktuator
DE10008991 2000-02-25

Publications (3)

Publication Number Publication Date
EP1138883A2 EP1138883A2 (fr) 2001-10-04
EP1138883A3 EP1138883A3 (fr) 2001-12-05
EP1138883B1 true EP1138883B1 (fr) 2005-03-09

Family

ID=7632458

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00710039A Expired - Lifetime EP1138883B1 (fr) 2000-02-25 2000-12-13 Commande des soupapes de moteur à combusion pour un actionneur électromagnétique, equipé avec des ressorts à gaz

Country Status (4)

Country Link
US (1) US6415751B2 (fr)
EP (1) EP1138883B1 (fr)
DE (2) DE10008991A1 (fr)
ES (1) ES2234553T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2382378B (en) * 2001-11-22 2003-12-24 Keith Gordon Hall Electromagnetic valve actuator
JP2003214126A (ja) * 2002-01-23 2003-07-30 Toyota Motor Corp 電磁駆動弁の制御装置
WO2004044390A1 (fr) * 2002-11-12 2004-05-27 Duckdive Pty. Limited Soupape electromagnetique rapide
DE102022112933A1 (de) 2022-05-23 2023-11-23 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verbrennungsmotor-Gaswechsel-Ventilanordnung

Family Cites Families (13)

* 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
US4779582A (en) * 1987-08-12 1988-10-25 General Motors Corporation Bistable electromechanical valve actuator
US4883025A (en) * 1988-02-08 1989-11-28 Magnavox Government And Industrial Electronics Company Potential-magnetic energy driven valve mechanism
JP3106890B2 (ja) * 1995-01-11 2000-11-06 トヨタ自動車株式会社 内燃機関の弁駆動装置
DE19651846B4 (de) * 1996-12-13 2005-02-17 Fev Motorentechnik Gmbh Verfahren zur elektromagnetischen Betätigung eines Gaswechselventils ohne Polflächenberührung
DE19707810C1 (de) * 1997-02-27 1998-05-07 Daimler Benz Ag Vorrichtung für eine elektromagnetische Ventilsteuerung
EP0870906B1 (fr) * 1997-04-08 2002-06-12 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Vérin électromagnétique pour la commande d'une soupape de distribution des gaz d'un moteur à combustion interne
DE19725218C2 (de) * 1997-06-15 2000-11-02 Daimler Chrysler Ag Vorrichtung zur Betätigung eines Gaswechselventiles für eine Brennkraftmaschine
DE19733186A1 (de) * 1997-07-31 1999-02-04 Fev Motorentech Gmbh & Co Kg Elektromagnetisch betätigbares Gaswechselventil für eine Kolbenbrennkraftmaschine
JPH11311112A (ja) * 1998-03-14 1999-11-09 Fev Motorentechnik Gmbh & Co Kg 空気戻しバネを備えたピストン内燃機関用の電磁操作可能なガス交換弁
DE19829858A1 (de) * 1998-07-05 2000-01-13 Bayerische Motoren Werke Ag Kombinierter elektromagnetischer/pneumatischer Aktuator zur Steuerung eines Hubventils, insbesondere Gaswechselventil einer Brennkraftmaschine
JP2000034912A (ja) * 1998-07-17 2000-02-02 Nissan Motor Co Ltd 内燃機関用動弁装置及びその制御方法
DE19838118A1 (de) * 1998-08-21 2000-02-24 Bayerische Motoren Werke Ag Elektromagnetischer Aktuator für ein Brennkraftmaschinen-Hubventil

Also Published As

Publication number Publication date
US6415751B2 (en) 2002-07-09
DE50009722D1 (de) 2005-04-14
EP1138883A2 (fr) 2001-10-04
DE10008991A1 (de) 2001-08-30
EP1138883A3 (fr) 2001-12-05
US20010017113A1 (en) 2001-08-30
ES2234553T3 (es) 2005-07-01

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