EP0924718A3 - Electromagnetic actuator - Google Patents

Electromagnetic actuator Download PDF

Info

Publication number
EP0924718A3
EP0924718A3 EP98123154A EP98123154A EP0924718A3 EP 0924718 A3 EP0924718 A3 EP 0924718A3 EP 98123154 A EP98123154 A EP 98123154A EP 98123154 A EP98123154 A EP 98123154A EP 0924718 A3 EP0924718 A3 EP 0924718A3
Authority
EP
European Patent Office
Prior art keywords
der
armature
elektromagneten
ist
auf
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.)
Withdrawn
Application number
EP98123154A
Other languages
German (de)
French (fr)
Other versions
EP0924718A2 (en
Inventor
Wolfgang Thiel
Matthias Gramann
Michael Nagel
Thomas Röckl
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.)
Conti Temic Microelectronic GmbH
Original Assignee
Temic Telefunken Microelectronic GmbH
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 Temic Telefunken Microelectronic GmbH filed Critical Temic Telefunken Microelectronic GmbH
Publication of EP0924718A2 publication Critical patent/EP0924718A2/en
Publication of EP0924718A3 publication Critical patent/EP0924718A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/081—Magnetic constructions
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Valve Device For Special Equipments (AREA)
  • Electromagnets (AREA)

Abstract

  • 1. Elektromagnetischer Aktuator.
  • 2.1. Bei bekannten elektromagnetischen Aktuatoren mit mindestens einem auf einen Anker wirkenden Elektromagneten wirken sich betriebsbedingte Temperaturschwankungen aufgrund der Temperaturabhängigkeit der magnetischen Eigenschaften des Ankers und Elektromagneten störend auf die Dynamik des Aktuators aus. Die Dynamik des neuen Aktuators soll über eine lange Betriebszeit möglichst unabhängig von Temperatureinflüssen sein.
  • 2.2. Mit einer auf dem Anker (1) und/oder dem mindestens einen Elektromagneten (2, 3) aufgebrachten verschleißhemmenden Schicht (9) aus nichtferromagnetischem Material wird der magnetische Gesamtwiderstand im magnetischen Kreis des mindestens einen Elektromagneten (2, 3) auf einen Wert festgelegt, der im wesentlichen durch den magnetischen Widerstand der verschleißhemmenden Schicht (9) und den magnetischen Widerstand eines ggf. vorhandenen Luftspaltes bestimmt ist und daher weitgehend temperaturunabhängig ist, so daß auch die auf den Anker (1) wirkende magnetische Kraft im wesentlichen temperaturunabhängig ist.
  • 2.3. Der Aktuator ist in Brennkraftmaschinen zur Betätigung von Gaswechselventilen einsetzbar.
    • Figure 00000001
  • 1. Electromagnetic actuator.
  • 2.1. In known electromagnetic actuators with at least one electromagnet acting on an armature, operating temperature fluctuations have a disruptive effect on the dynamics of the actuator due to the temperature dependence of the magnetic properties of the armature and electromagnets. The dynamics of the new actuator should be as independent as possible from temperature influences over a long operating time.
  • 2.2. The total magnetic resistance in the magnetic circuit of the at least one electromagnet (2, 3) is fixed to a value with a wear-resistant layer (9) made of non-ferromagnetic material on the armature (1) and / or the at least one electromagnet (2, 3), which is essentially determined by the magnetic resistance of the wear-resistant layer (9) and the magnetic resistance of an air gap which may be present and is therefore largely temperature-independent, so that the magnetic force acting on the armature (1) is also essentially temperature-independent.
  • 2.3. The actuator can be used in internal combustion engines for actuating gas exchange valves.
    • Figure 00000001
    EP98123154A 1997-12-20 1998-12-04 Electromagnetic actuator Withdrawn EP0924718A3 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19757170 1997-12-20
    DE19757170A DE19757170A1 (en) 1997-12-20 1997-12-20 Electromagnetic actuator

    Publications (2)

    Publication Number Publication Date
    EP0924718A2 EP0924718A2 (en) 1999-06-23
    EP0924718A3 true EP0924718A3 (en) 2000-07-12

    Family

    ID=7852943

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP98123154A Withdrawn EP0924718A3 (en) 1997-12-20 1998-12-04 Electromagnetic actuator

    Country Status (2)

    Country Link
    EP (1) EP0924718A3 (en)
    DE (1) DE19757170A1 (en)

    Families Citing this family (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR2783033B1 (en) * 1998-09-04 2006-06-02 Renault ARRANGEMENT FOR THE ELECTROMAGNETIC CONTROL OF A VALVE
    DE19931052C2 (en) * 1999-07-06 2001-05-23 Siemens Ag Electromagnetic actuator
    JP3811442B2 (en) * 2002-11-07 2006-08-23 Ｓｍｃ株式会社 Magnetic damper and actuator having the same

    Citations (6)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US4005733A (en) * 1975-11-17 1977-02-01 General Motors Corporation Pressure control valve
    DE2541392A1 (en) * 1975-09-17 1977-03-24 Philips Patentverwaltung Electromagnet with armature between two separate pole shoes - using electroless plated armature and shoe surfaces magnetically separated by spacer ring
    US4962871A (en) * 1989-07-24 1990-10-16 Valco Cincinnati, Inc. Applicator utilizing high speed non-contact extrusion valve
    US5012982A (en) * 1986-11-15 1991-05-07 Hitachi, Ltd. Electromagnetic fuel injector
    US5300908A (en) * 1990-10-10 1994-04-05 Brady Usa, Inc. High speed solenoid
    JPH0869915A (en) * 1994-08-29 1996-03-12 Ckd Corp Electromagnetic solenoid

    Family Cites Families (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE1158173B (en) * 1957-09-11 1963-11-28 Westinghouse Electric Corp Electromagnet, especially for driving electrical switching devices
    DE3908859A1 (en) * 1989-03-17 1990-09-20 Rexroth Mannesmann Gmbh Ball switching valve, in particular for chopper operation
    US5488340A (en) * 1994-05-20 1996-01-30 Caterpillar Inc. Hard magnetic valve actuator adapted for a fuel injector
    DE19526387C2 (en) * 1994-07-19 1998-12-10 Sumitomo Metal Mining Co Double-coated composite steel article and method for its production

    Patent Citations (6)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE2541392A1 (en) * 1975-09-17 1977-03-24 Philips Patentverwaltung Electromagnet with armature between two separate pole shoes - using electroless plated armature and shoe surfaces magnetically separated by spacer ring
    US4005733A (en) * 1975-11-17 1977-02-01 General Motors Corporation Pressure control valve
    US5012982A (en) * 1986-11-15 1991-05-07 Hitachi, Ltd. Electromagnetic fuel injector
    US4962871A (en) * 1989-07-24 1990-10-16 Valco Cincinnati, Inc. Applicator utilizing high speed non-contact extrusion valve
    US5300908A (en) * 1990-10-10 1994-04-05 Brady Usa, Inc. High speed solenoid
    JPH0869915A (en) * 1994-08-29 1996-03-12 Ckd Corp Electromagnetic solenoid

    Non-Patent Citations (1)

    * Cited by examiner, † Cited by third party
    Title
    PATENT ABSTRACTS OF JAPAN vol. 1996, no. 07 31 July 1996 (1996-07-31) *

    Also Published As

    Publication number Publication date
    EP0924718A2 (en) 1999-06-23
    DE19757170A1 (en) 1999-07-01

    Similar Documents

    Publication Publication Date Title
    DE19518543A1 (en) Hard magnetic valve actuator suitable for a fuel injector
    EP1069284A3 (en) A method of using inductance for determining the position of an armature in an electromagnetic solenoid
    DE3733809A1 (en) Solenoid valve
    EP1002938A3 (en) Solenoid valve device
    EP0973178A3 (en) Method for controlling the motion of an armature of an electromagnetic actuator
    DE2246624C2 (en) Diaphragm valve for the control of flowing media
    DE112011104463T5 (en) Solenoid actuator and fuel injector with same
    WO2004044932A1 (en) Solenoid plunger system with an adjustable magnetic flux
    DE19526681A1 (en) Accurate timed control of armature movement of electromagnetic positioning device e.g. for IC engine gas exchange valve control
    EP1001142A3 (en) Method of operation for an electromagnetically driven valve actuator
    DE102010055033A1 (en) Solenoid valve
    EP0924718A3 (en) Electromagnetic actuator
    EP0935054A3 (en) Electromagnetic actuator
    KR960701297A (en) Electromagnetically Operable Valve
    EP0114655A1 (en) Piston ring for an internal-combustion engine
    EP1264968A3 (en) Apparatus for actuating a valve with variable lift in an internal combustion engine
    EP0855502A3 (en) Internal combustion engine with exhaust gas recirculation device
    DE19805171C2 (en) Electromagnet and use of the same
    DE10010756A1 (en) Method of regulating the movement characteristic of an armature e.g. for electromagnetic actuator of internal combustion (IC) engine gas-exchange valve, involves detecting a detector magnitude
    EP4058704B1 (en) Electromagnetic valve actuator for stop-free electromagnetically actuated valve, valve and reciprocating piston internal combustion engine with valve
    EP3394866B1 (en) Determination of armature stroke by measurement of hysteresis characteristics
    EP0924395A3 (en) Method of manufacturing an electromagnetic actuator
    EP1179675A3 (en) Solenoid valve controlling the injection valve of an internal combustion engine and electromagnet for it
    CH672358A5 (en)
    US6578536B1 (en) Actuator assembly for electrohydraulic operation of cylinder valves

    Legal Events

    Date Code Title Description
    PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

    Free format text: ORIGINAL CODE: 0009012

    AK Designated contracting states

    Kind code of ref document: A2

    Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

    AX Request for extension of the european patent

    Free format text: AL;LT;LV;MK;RO;SI

    RAP1 Party data changed (applicant data changed or rights of an application transferred)

    Owner name: TEMIC TELEFUNKEN MICROELECTRONIC GMBH

    PUAL Search report despatched

    Free format text: ORIGINAL CODE: 0009013

    AK Designated contracting states

    Kind code of ref document: A3

    Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

    AX Request for extension of the european patent

    Free format text: AL;LT;LV;MK;RO;SI

    AKX Designation fees paid
    STAA Information on the status of an ep patent application or granted ep patent

    Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

    RAP1 Party data changed (applicant data changed or rights of an application transferred)

    Owner name: CONTI TEMIC MICROELECTRONIC GMBH

    18D Application deemed to be withdrawn

    Effective date: 20010113

    REG Reference to a national code

    Ref country code: DE

    Ref legal event code: 8566