EP0405191A1 - Dispositif électromagnétique de positionnement - Google Patents

Dispositif électromagnétique de positionnement Download PDF

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Publication number
EP0405191A1
EP0405191A1 EP90110589A EP90110589A EP0405191A1 EP 0405191 A1 EP0405191 A1 EP 0405191A1 EP 90110589 A EP90110589 A EP 90110589A EP 90110589 A EP90110589 A EP 90110589A EP 0405191 A1 EP0405191 A1 EP 0405191A1
Authority
EP
European Patent Office
Prior art keywords
magnet
armature
permanent magnet
working
magnets
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Withdrawn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
EP90110589A
Other languages
German (de)
English (en)
Inventor
Franz Prof. Dr. Techn. Pischinger
Peter Dr.-Ing. Kreuter
Michael Dipl.-Ing. Schebitz
Martin Dipl.-Ing. Scheidt
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.)
FEV Europe GmbH
Original Assignee
FEV Motorentechnik GmbH and Co KG
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 FEV Motorentechnik GmbH and Co KG filed Critical FEV Motorentechnik GmbH and Co KG
Publication of EP0405191A1 publication Critical patent/EP0405191A1/fr
Withdrawn legal-status Critical Current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
    • F01L2009/2146—Latching means
    • F01L2009/2148—Latching means using permanent magnet

Definitions

  • the invention relates to an electromagnetically operating control device for oscillatingly movable control elements on displacement machines, in particular for flat slide valves and globe valves, consisting of a spring system and two electrically operating switching magnets, hereinafter referred to as working magnets, by means of which an armature actuating the control element can be moved into two opposite switching positions , the location of the equilibrium position of the spring system between the two switching positions.
  • Such an actuator is known from DE-OS 30 24 109.
  • the control element of a displacement machine is held in the closed state in an actuating device of this type by a compression spring.
  • Another compression spring acts on a magnet armature interacting with the control element in such a way that the equilibrium position of the spring system lies between the end positions of the movement of the armature.
  • the end positions of the armature movement are each located on an electrically operated switching magnet, hereinafter called the working magnet.
  • the working magnet To switch this device, one working magnet is energized and the other switched off. Due to the force of the pre-tensioned spring, the armature is accelerated to the equilibrium position and decelerated on its way through the counteracting force of the other spring. Due to friction, the armature cannot reach the opposite end position. On the missing remaining path, the armature is attracted by the tensile force of the corresponding working magnet.
  • a permanent magnet is assigned to each of the two working magnets, as described for example in DE-OS 35 00 530, or a common permanent magnet is available for both working magnets, as described in DE-OS 34 02 768 to allow the armature to be held on the respective magnet without energizing the winding.
  • the armature is released from the pole face of the magnet by exciting the winding of the respective magnet with a polarity of the direct current, which causes a weakening of the magnetic field of the permanent magnet.
  • the energy supply to the actuating device via two leads per working magnet for a multi-cylinder version of an internal combustion engine places high demands on a reliable and compact laying and connection of the leads.
  • the invention has for its object to provide an actuating device in particular for the operation of a high-speed internal combustion engine with variably actuated control elements, which requires less energy, and which preferably has a defined end position, which is reached automatically when switching off or failure.
  • the permanent magnet is designed in such a way that it enables the armature to be attracted and held from the position near the pole face during the oscillating movement.
  • the permanent magnet is dimensioned such that it only allows the armature to be held at the pole faces of the closing magnet and the support from the field of the electromagnet is required to attract the armature.
  • a reduction in the number of cables leading to the actuating device is achieved in the proposed arrangement according to a further embodiment of the invention by connecting the two electromagnets in parallel, taking into account the electrical polarity.
  • both windings are preferably excited at the natural frequency of the oscillatable spring-mass system.
  • the position in the inner magnetic leg is selected according to a further embodiment of the invention, since damage can be avoided in this way.
  • the magnetic circuits of the permanent magnet and the electromagnet assigned to the closed position are completely or partially separated.
  • the actuating device can be operated with short dwell times on the opening magnet, ie in the open position of the control valve.
  • the system has a defined end position in the event of failure or shutdown, specifically for internal combustion engines in the closed position of the control valve.
  • the control unit can be supplied via two common supply lines, which halves the effort of the electronic control.
  • FIG. 1 shows an example of an electromagnetically operating actuating device with working magnets 1 and 2, windings 3 and 4 and a permanent magnet 5.
  • An armature 6 is guided in a sleeve 7.
  • the permanent magnet 5 is made of rare earth cobalt or rare earth iron boron sintered material in view of the high demands placed on the magnetic properties. These materials are very brittle and therefore easy to damage.
  • the installation location shown in Figure 1 between sleeve 7 and winding 3 (filled with potting compound) ensures optimal protection against destruction.
  • the current is switched on in good time so that the armature is attracted to the pole face at time t2.
  • the armature 6 starts to move at the point in time t3 and is affected by the force of the magnet 1 due to the permanently magnetically generated field in Time t4 tightened and held.
  • FIG. 4 shows the current profiles that occur when the windings 3 and 4 are connected in parallel during a lifting process for the design case of tightening and holding without current support through the winding 3.
  • the switch-on time is determined point of the current before t1 in both windings after the current rise in winding 3 to drop the armature 6 at the magnet 1.
  • the design of the winding 4 is chosen so that the current at the time t2 the armature approaches the pole face of the magnet 2 has reached sufficient level to tighten the anchor 6.
  • the hatched area of the current curve is not required for the function of the actuating device, but current still flows due to the parallel connection of the windings until time t2, when the armature is captured.
  • FIG. 5 shows the current profiles that occur during the design for tightening with current support through the winding 3.
  • the design of the windings 3 and 4 is chosen so that the current in winding 3 at time t1 initiates a quick release of the armature 6 and the current which is switched on at the same time in winding 4 has a sufficient level for attracting the armature 6 at time t2 of the armature approach.
  • the current direction in the windings is reversed after the time t3.
  • the hatched areas under the current profiles are not necessary for the function of the actuating device, but are caused by the parallel connection of both windings; the resulting losses are low if the windings are designed accordingly.
  • Line 20 shows the stroke of the actuating device, for example the valve of an internal combustion engine, while lines 21 and 22 show the current profile in the electromagnet associated with the closing or opening function.
  • an actuating unit is shown with an upper working magnet 30, the permanent magnetic circuit, consisting of a permanent magnet 31, a pole piece 32 and a middle leg 33, with the separate circuit of the electromagnet, consisting of outer leg 34, yoke 35 and winding 36 through the common middle leg 33 is connected.
  • the permanent magnetic circuit 31, 32, 33 has two axial air gaps, via which the tensile force acts on armature 37.
  • the electromagnetic circuit 33, 34, 35, 36 has an axial and a radial air gap 38.
  • the permanently magnetically excited flux density in the middle leg 33 can be both amplified and weakened, and therefore both support the tightening of the armature 37 against the force of the spring 39 and initiate the armature movement.
  • the magnetic circuit open i.e. Contact of the armature 37 on the lower working magnet 40, the short magnetic path in the radial gap 38 weakens the permanent magnetic circuit less than in an arrangement with two axial air gaps according to FIG. 1; nevertheless, by using the middle leg 33, a high holding force is applied in the tightened state.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Electromagnets (AREA)
EP90110589A 1989-06-27 1990-06-05 Dispositif électromagnétique de positionnement Withdrawn EP0405191A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3920978A DE3920978A1 (de) 1989-06-27 1989-06-27 Elektromagnetisch arbeitende stelleinrichtung
DE3920978 1989-06-27

Publications (1)

Publication Number Publication Date
EP0405191A1 true EP0405191A1 (fr) 1991-01-02

Family

ID=6383653

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90110589A Withdrawn EP0405191A1 (fr) 1989-06-27 1990-06-05 Dispositif électromagnétique de positionnement

Country Status (3)

Country Link
EP (1) EP0405191A1 (fr)
JP (1) JPH0344010A (fr)
DE (1) DE3920978A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0844371A3 (fr) * 1994-12-16 1998-07-22 Honda Giken Kogyo Kabushiki Kaisha Dispositif de commande de soupapes électromagnétiques pour moteurs à combustion interne
EP0867898A1 (fr) * 1997-03-24 1998-09-30 Binder Magnete GmbH Dispositif électromagnétique de positionnement
EP1008730A2 (fr) * 1998-11-19 2000-06-14 Toyota Jidosha Kabushiki Kaisha Commande de soupape électromagnétique dans un moteur à combustion interne
EP1096113A2 (fr) * 1999-10-25 2001-05-02 FEV Motorentechnik GmbH Procédé de commande d'un moteur à combustion interne dans le cas d'une défectuosité de fonctionnement temporaire d'un actionneur de soupape électromagnétique
FR2865238A1 (fr) * 2004-01-15 2005-07-22 Peugeot Citroen Automobiles Sa Actionneur electromecanique de commande de soupape pour moteur a combustion interne et moteur a combustion interne muni d'un tel actionneur
EP1561914A2 (fr) * 2004-02-03 2005-08-10 Peugeot Citroen Automobiles SA Perfectionnements apportés à un actionneur électromécanique de soupape de moteur à combustion interne
WO2016074109A1 (fr) * 2014-11-13 2016-05-19 哈尔滨工程大学 Électroaimant à double aimant permanent de circuit magnétique composite et électrovanne à grande vitesse à double aimant permanent de circuit magnétique composite

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19753746A1 (de) * 1997-12-04 1999-06-10 Bayerische Motoren Werke Ag Elektromagnetischer Aktuator zum Antrieb eines dem Gaswechsel dienenden Hubventils einer Brennkraftmaschine
JP4126787B2 (ja) 1998-12-07 2008-07-30 トヨタ自動車株式会社 電磁駆動装置
DE19913788C1 (de) * 1999-03-26 2000-03-16 Daimler Chrysler Ag Vorrichtung zum Betätigen eines Gaswechselventils einer Brennkraftmaschine
DE10003928A1 (de) * 1999-11-25 2001-06-07 Daimler Chrysler Ag Elektromagnetischer Aktuator
JP4625727B2 (ja) * 2005-06-30 2011-02-02 日立オートモティブシステムズ株式会社 電磁アクチュエータ及びそれを用いたクラッチ機構及び自動車の動力伝達機構
JP2013217265A (ja) * 2012-04-06 2013-10-24 Denso Corp 電磁アクチュエータ

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3500530A1 (de) * 1985-01-09 1986-07-10 Binder Magnete GmbH, 7730 Villingen-Schwenningen Vorrichtung zur elektromagnetischen steuerung von hubventilen
EP0281192A1 (fr) * 1987-03-03 1988-09-07 Magnavox Government and Industrial Electronics Company Commande électromagnétique de soupape
US4779582A (en) * 1987-08-12 1988-10-25 General Motors Corporation Bistable electromechanical valve actuator
US4831973A (en) * 1988-02-08 1989-05-23 Magnavox Government And Industrial Electronics Company Repulsion actuated potential energy driven valve mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3500530A1 (de) * 1985-01-09 1986-07-10 Binder Magnete GmbH, 7730 Villingen-Schwenningen Vorrichtung zur elektromagnetischen steuerung von hubventilen
EP0281192A1 (fr) * 1987-03-03 1988-09-07 Magnavox Government and Industrial Electronics Company Commande électromagnétique de soupape
US4779582A (en) * 1987-08-12 1988-10-25 General Motors Corporation Bistable electromechanical valve actuator
US4831973A (en) * 1988-02-08 1989-05-23 Magnavox Government And Industrial Electronics Company Repulsion actuated potential energy driven valve mechanism

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0844371A3 (fr) * 1994-12-16 1998-07-22 Honda Giken Kogyo Kabushiki Kaisha Dispositif de commande de soupapes électromagnétiques pour moteurs à combustion interne
EP0867898A1 (fr) * 1997-03-24 1998-09-30 Binder Magnete GmbH Dispositif électromagnétique de positionnement
EP1008730A2 (fr) * 1998-11-19 2000-06-14 Toyota Jidosha Kabushiki Kaisha Commande de soupape électromagnétique dans un moteur à combustion interne
EP1008730A3 (fr) * 1998-11-19 2002-08-14 Toyota Jidosha Kabushiki Kaisha Commande de soupape électromagnétique dans un moteur à combustion interne
EP1096113A2 (fr) * 1999-10-25 2001-05-02 FEV Motorentechnik GmbH Procédé de commande d'un moteur à combustion interne dans le cas d'une défectuosité de fonctionnement temporaire d'un actionneur de soupape électromagnétique
EP1096113A3 (fr) * 1999-10-25 2002-12-18 FEV Motorentechnik GmbH Procédé de commande d'un moteur à combustion interne dans le cas d'une défectuosité de fonctionnement temporaire d'un actionneur de soupape électromagnétique
FR2865238A1 (fr) * 2004-01-15 2005-07-22 Peugeot Citroen Automobiles Sa Actionneur electromecanique de commande de soupape pour moteur a combustion interne et moteur a combustion interne muni d'un tel actionneur
US7156057B2 (en) 2004-01-15 2007-01-02 Cnrs Centre National De La Recherche Scientifique Electromagnetic actuator for controlling a valve of an internal combustion engine and internal combustion engine equipped with such an actuator
EP1561914A2 (fr) * 2004-02-03 2005-08-10 Peugeot Citroen Automobiles SA Perfectionnements apportés à un actionneur électromécanique de soupape de moteur à combustion interne
EP1561914A3 (fr) * 2004-02-03 2008-09-03 Peugeot Citroen Automobiles SA Perfectionnements apportés à un actionneur électromécanique de soupape de moteur à combustion interne
WO2016074109A1 (fr) * 2014-11-13 2016-05-19 哈尔滨工程大学 Électroaimant à double aimant permanent de circuit magnétique composite et électrovanne à grande vitesse à double aimant permanent de circuit magnétique composite
CN106575562A (zh) * 2014-11-13 2017-04-19 哈尔滨工程大学 复合磁路双永磁体电磁铁及复合磁路双永磁体高速电磁阀

Also Published As

Publication number Publication date
DE3920978A1 (de) 1991-01-10
JPH0344010A (ja) 1991-02-25

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