EP0971100A1 - Protection magnétique pour actionneur de soupape électromagnétique - Google Patents

Protection magnétique pour actionneur de soupape électromagnétique Download PDF

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Publication number
EP0971100A1
EP0971100A1 EP19990112531 EP99112531A EP0971100A1 EP 0971100 A1 EP0971100 A1 EP 0971100A1 EP 19990112531 EP19990112531 EP 19990112531 EP 99112531 A EP99112531 A EP 99112531A EP 0971100 A1 EP0971100 A1 EP 0971100A1
Authority
EP
European Patent Office
Prior art keywords
magnetic field
actuator
magnet
magnetic
field sensor
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
EP19990112531
Other languages
German (de)
English (en)
Other versions
EP0971100B1 (fr
Inventor
Gunther Breu
Matthias Gramann
Michael Nagel
Roger Pohlmann
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26047239&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0971100(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE19843075A external-priority patent/DE19843075A1/de
Application filed by DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP0971100A1 publication Critical patent/EP0971100A1/fr
Application granted granted Critical
Publication of EP0971100B1 publication Critical patent/EP0971100B1/fr
Anticipated expiration legal-status Critical
Revoked 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
    • 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
    • F01L9/21—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids
    • F01L2009/2132—Biasing means
    • F01L2009/2134—Helical springs
    • F01L2009/2136—Two opposed springs for intermediate resting position of the armature
    • 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
    • F01L9/21—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids
    • F01L2009/2167—Sensing means
    • F01L2009/2169—Position sensors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8158—With indicator, register, recorder, alarm or inspection means
    • Y10T137/8225—Position or extent of motion indicator
    • Y10T137/8242—Electrical

Definitions

  • the invention relates to an actuator for electromagnetic valve control with a device for determining the position of the anchor plate, the Device consists of a magnetic field sensor and a magnetic field transmitter.
  • actuators for electromagnetic valve control are known for example from US 4,957,074.
  • an actuator for electromagnetic valve control from the opening magnet and the closing magnet which by at least a component made of a non-ferromagnetic material separated from each other are.
  • This component can be formed, for example, by a housing part become.
  • the anchor plate made of a ferromagnetic material, by energizing the excitation coil of the opening magnet or the excitation coil of the closer magnet is moved in the respective direction.
  • the Yoke of the opening magnet has a bushing for a plunger the forces acting on the anchor plate on at least one gas exchange valve transmits.
  • the actuator can for example be designed so that the actuator spring on the the side of the actuator opposite the gas exchange valve on the outside of the closer magnet is arranged.
  • This is an extension of Tappet arranged a push rod having an actuator spring plate, which is supported by a bushing in the yoke of the closer magnet.
  • the yoke of the closer magnet has a passage for the push rod surrounding, forming a wall in the one Internal thread is incorporated.
  • a Screw cap screwed in which together with the wall creates a cavity forms in which the actuator spring resting on the actuator spring plate is arranged.
  • the pretension can be adjusted by turning the screw cap the actuator spring can be changed, which is the rest position of the anchor plate is adjustable.
  • An actuator forms a functional unit with a gas exchange valve, whereby the gas exchange valve, corresponding to a conventional cylinder head with camshafts, by means of a valve spring and a valve spring plate in the valve seat of the cylinder head is pulled.
  • the anchor plate is in the rest position of the functional unit exactly in the middle between the opening magnet and the closing magnet, wherein the valve spring and the actuator spring are biased.
  • the valve plate the gas exchange valve is in the middle position between the valve seat of the cylinder head at which the gas exchange valve is closed and the position in which the gas exchange valve is opened to the maximum.
  • Actuator a device for determining the position of the anchor plate, the a signal proportional to the position of the anchor plate to one of the actuators transmit assigned control electronics.
  • the device is, for example from a fixed, attached to the yoke of the closer magnet Magnetic field sensor, and one attached to the oscillating push rod Magnetic field transmitter.
  • the control electronics calculate for regulation the flight behavior of the anchor plate based on the signal of the magnetic field sensor the required current and the times at which the opening magnet and the closing magnet can be switched.
  • the magnetic field sensors sense the field strength of one of the oscillating ones Components of the actuator attached magnetic field encoder.
  • Such Device for determining the position is from the above US 4,957,074 known.
  • the disadvantage of this device for determining the position of the anchor plate consists in the fact that the field line course of the magnetic field generator from the metallic, partly oscillating components of the actuator, for example the actuator spring is influenced.
  • the invention has for its object an actuator for electromagnetic Valve control with a magnetic field sensor and a magnetic field transmitter having device for determining the position of the anchor plate specify the field line of the magnetic field encoder not of the metallic, possibly oscillating, components of the actuator is influenced.
  • the magnetic field sensor and the magnetic field transmitter are surrounded by a magnetic shield. Due to the magnetic shielding, the magnetic field sensor only senses the field strength dependent on the distance to the magnetic field transmitter Magnetic field sensor.
  • the magnetic shield preferably consists of a material with soft magnetic properties, creating the field lines in the magnetic Shielding.
  • the push rod is attached to the magnetic field encoder. It points the closer magnet is a wall surrounding the bushing forming with an internal thread in which a screw cap is screwed in. Between the actuator spring plate and the screw cap an actuator spring is arranged. As a magnetic shield is between the actuator spring and the push rod on which the magnetic field encoder is attached, a metallic sleeve is arranged, the magnetic field sensor, which is fixed to the closer magnet, between the Metallic sleeve and the push rod arranged in the magnetic field encoder is.
  • the magnetic shield formed as a metallic sleeve is a component of the screw cap, where appropriate the entire screw cap is made of a material with soft magnetic properties.
  • the magnetic field sensor is screwed into the screw cap with a holding device.
  • the magnetic field sensor as an analog Hall sensor and the magnetic field sensor as a permanent magnet is trained.
  • the following is an actuator for electromagnetic valve control one having a magnetic field sensor and a magnetic field transmitter Device for determining the position of the anchor plate by a magnetic Shield is surrounded, based on an embodiment shown and explained in connection with a figure.
  • FIG. 1 is an actuator for electromagnetic valve control with a Device for determining the position of the anchor plate AP shown, the from a magnetic field sensor MS, which is designed as an analog Hall sensor, and a magnetic field generator MG, which is designed as a permanent magnet, consists.
  • the actuator consists of the yoke of the opening magnet ⁇ M and the yoke of the Closing magnet SM, made by two from a non-ferromagnetic Material spacers DS are separated from each other. Between the spacers DS oscillates the anchor plate AP, on which the plunger S attached, which the forces acting on the anchor plate AP via a Execution in the yoke of the opening magnet ⁇ M on a gas exchange valve transmits.
  • the actuator spring AF is in a radial symmetry around the bushing the push rod SS formed, forming a wall of the yoke of the closer magnet SM.
  • the wall points to the Inside a thread into which a screw cap SD is screwed. The prestressing of the actuator spring AF be changed, whereby the rest position of the anchor plate AP is adjustable.
  • the screw cap SD has a central recess in the middle which also has an internal thread.
  • the recess is tubular extended. This tubular extension forms the metallic one Magnetic shield MA designed for the sleeve at the end the push rod SS attached permanent magnet MG.
  • the screw cap SD and the metallic sleeve MA are made in one piece, which is why the Whole screw cap SD made of a material with soft magnetic properties is made.
  • the analog Hall sensor MS can be adjusted in its position to the permanent magnet MG. This adjustment is necessary if the middle position of the anchor plate through the Twisting the screw cap SD was changed, which also changes the Position of the analog Hall sensor to the permanent magnet MG changed.
  • the electrical device not shown, also takes place via the holding device HV Wiring of the analog Hall sensor MS.
  • the magnetic shield MA which is designed as a metallic sleeve, which is part of the screw cap SD, senses the analog Hall sensor MS only the distance between the analog Hall sensor and the Permanent magnet MG dependent magnetic field strength of the permanent magnet MG, whereby a control unit assigned to the actuators Undistorted signal proportional to the position of the anchor plate AP Available.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Indication Of The Valve Opening Or Closing Status (AREA)
  • Valve Device For Special Equipments (AREA)
EP19990112531 1998-07-07 1999-07-01 Protection magnétique pour actionneur de soupape électromagnétique Revoked EP0971100B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19830233 1998-07-07
DE19830233 1998-07-07
DE19843075 1998-09-19
DE19843075A DE19843075A1 (de) 1998-07-07 1998-09-19 Magnetische Abschirmung eines Aktors zur elektromagnetischen Ventilsteuerung

Publications (2)

Publication Number Publication Date
EP0971100A1 true EP0971100A1 (fr) 2000-01-12
EP0971100B1 EP0971100B1 (fr) 2003-09-03

Family

ID=26047239

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990112531 Revoked EP0971100B1 (fr) 1998-07-07 1999-07-01 Protection magnétique pour actionneur de soupape électromagnétique

Country Status (3)

Country Link
US (1) US6213147B1 (fr)
EP (1) EP0971100B1 (fr)
ES (1) ES2205648T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2871543A1 (fr) * 2004-06-11 2005-12-16 Toyota Motor Co Ltd Electrovanne
AT512065A1 (de) * 2011-10-27 2013-05-15 Msg Mechatronic Systems Gmbh Bistabiler schaltmagnet mit kolbenpositionsdetektor

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001221653A (ja) * 1999-12-01 2001-08-17 Honda Motor Co Ltd 変位検出装置
JP3689614B2 (ja) * 2000-03-21 2005-08-31 株式会社日立製作所 位置測定装置の磁石固定方法
US7004120B2 (en) * 2003-05-09 2006-02-28 Warren James C Opposed piston engine
US20040246649A1 (en) * 2003-06-03 2004-12-09 Mks Instruments, Inc. Flow control valve with magnetic field sensor
NZ540311A (en) * 2004-06-19 2006-11-30 Inventio Ag Drive for a lift installation
US7284570B1 (en) 2005-02-16 2007-10-23 The United States Of America As Represented By The Secretary Of The Navy Electrically powered valve for controlling, monitoring and evaluating fluid flow
FR2955168B1 (fr) * 2010-01-14 2012-02-10 Mann & Hummel Gmbh Vanne de commande pour circuit de circulation de liquide
WO2014083157A1 (fr) * 2012-11-30 2014-06-05 Petrolvalves S.R.L. Indicateur de position de mouvement magnétique continu
EP2966287B1 (fr) * 2014-07-07 2019-08-28 Goodrich Actuation Systems Ltd. Commutateur à pression pour commande d'inverseur de poussée
JP6498287B2 (ja) * 2015-06-04 2019-04-10 三菱電機株式会社 電磁アクチュエータ
KR102087733B1 (ko) * 2019-03-14 2020-03-11 동주에이피 주식회사 자계 차폐 커버부를 구비한 컨트롤 밸브
US12379047B2 (en) * 2022-08-15 2025-08-05 Fmc Technologies, Inc. Valve position sensor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5769043A (en) * 1997-05-08 1998-06-23 Siemens Automotive Corporation Method and apparatus for detecting engine valve motion
EP0867602A1 (fr) * 1997-03-28 1998-09-30 Fuji Jukogyo Kabushiki Kaisha Dispositif de commande pour soupape actionnée électromagnétiquement et procédé correspondant

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US3896280A (en) * 1974-03-13 1975-07-22 Us Army Valve position indicator
US4603707A (en) * 1983-08-02 1986-08-05 Motorola, Inc. Purge block for gas systems
US4619288A (en) * 1985-11-06 1986-10-28 Pneumo Corporation Adjustable transducer and lock mechanism for monitoring valve position
DE3616540A1 (de) * 1986-05-16 1987-11-19 Porsche Ag Vorrichtung zum betaetigen eines gaswechsel-tellerventils einer hubkolben-brennkraftmaschine
US4777979A (en) * 1987-11-16 1988-10-18 Westinghouse Electric Corp. Position detector for clapper of non-return valve
US4825904A (en) * 1988-04-18 1989-05-02 Pneumo Abex Corporation Two position flow control valve assembly with position sensing
US4953590A (en) * 1988-04-22 1990-09-04 Tokyo Keiki Company Ltd. Electromagnetic directional control valve
US4914388A (en) * 1988-06-30 1990-04-03 Eaton Corporation Dual output sensor for detecting the proximity of a reciprocating member
US5111092A (en) * 1991-03-01 1992-05-05 Marotta Scientific Controls, Inc. Device for sensing reciprocated armature position
US5144977A (en) * 1991-06-20 1992-09-08 Dresser Industries, Inc. Fluid valve with actuation sensor
US5257014A (en) * 1991-10-31 1993-10-26 Caterpillar Inc. Actuator detection method and apparatus for an electromechanical actuator
DE4142996A1 (de) * 1991-12-24 1993-07-01 Bosch Gmbh Robert Verfahren zum messen der mechanischen bewegung eines magnetventilankers, insbesondere von elektrisch gesteuerten einspritzanlagen
US5236012A (en) * 1993-01-07 1993-08-17 Prochef Incorporated Electromagnetic valve with actuation-indicating means
GB9306980D0 (en) * 1993-04-03 1993-05-26 Blp Components Ltd Solenoid valves
US5522414A (en) * 1994-03-30 1996-06-04 G. P. Reeves, Inc. Flow sensor
US5787915A (en) * 1997-01-21 1998-08-04 J. Otto Byers & Associates Servo positioning system
US5975131A (en) * 1997-10-10 1999-11-02 Theisen; Terry J. Tank valve and opening sensor

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
EP0867602A1 (fr) * 1997-03-28 1998-09-30 Fuji Jukogyo Kabushiki Kaisha Dispositif de commande pour soupape actionnée électromagnétiquement et procédé correspondant
US5769043A (en) * 1997-05-08 1998-06-23 Siemens Automotive Corporation Method and apparatus for detecting engine valve motion

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2871543A1 (fr) * 2004-06-11 2005-12-16 Toyota Motor Co Ltd Electrovanne
AT512065A1 (de) * 2011-10-27 2013-05-15 Msg Mechatronic Systems Gmbh Bistabiler schaltmagnet mit kolbenpositionsdetektor

Also Published As

Publication number Publication date
US6213147B1 (en) 2001-04-10
ES2205648T3 (es) 2004-05-01
EP0971100B1 (fr) 2003-09-03

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