EP0118591B1 - Verfahren und Vorrichtung zum Aktivieren einer elektromagnetischen Stelleinrichtung - Google Patents

Verfahren und Vorrichtung zum Aktivieren einer elektromagnetischen Stelleinrichtung Download PDF

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Publication number
EP0118591B1
EP0118591B1 EP83107878A EP83107878A EP0118591B1 EP 0118591 B1 EP0118591 B1 EP 0118591B1 EP 83107878 A EP83107878 A EP 83107878A EP 83107878 A EP83107878 A EP 83107878A EP 0118591 B1 EP0118591 B1 EP 0118591B1
Authority
EP
European Patent Office
Prior art keywords
electromagnets
oscillation
frequency
positioning means
voltage
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
Application number
EP83107878A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0118591A1 (de
Inventor
Wolfgang Dr. Klockner
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.)
Cessione audi AG
Original Assignee
Klockner Wolfgang Dr
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 Klockner Wolfgang Dr filed Critical Klockner Wolfgang Dr
Publication of EP0118591A1 publication Critical patent/EP0118591A1/de
Application granted granted Critical
Publication of EP0118591B1 publication Critical patent/EP0118591B1/de
Expired 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
    • 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
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings

Definitions

  • the invention relates to a method for activating an electromagnetic actuating device according to the preamble of the main claim.
  • the invention further relates to a device for performing the method.
  • an electromagnetically operating actuator which according to the preamble of the main claim has an actuator which, in the passive state, assumes a rest position between an open and a closed position, given by two springs acting in opposite directions, and one between two electromagnets Movable, connected to the actuator, magnetisable armature, which forms an oscillatable system together with the actuator and the springs and in the open position against the force of the one spring of the one electromagnet in contact with a contact surface formed thereon and in the closed position against the force the other spring is obtained from the other electromagnet in contact with a contact surface formed on the latter.
  • a tensioning device is proposed in DE-A 30 24 109, by means of which the position of the rest position can be relocated such that the magnetizable armature connected to the actuator comes into contact with one of the electromagnets, so that the actuator when activating the electromagnet in contact with this remains when the tensioning device is relieved.
  • the electromagnetically operating actuating device is activated, so that it can only be moved into one or the other end position by excitation of the electromagnets.
  • the tensioning device contained in the adjusting device according to DE-A 30 24 109 requires a relatively large amount of construction work and makes the adjusting device significantly more expensive.
  • the invention is based on the object of specifying a method for activating an electromagnetically operating actuating device which, with high functional reliability, enables the actuating device to be constructed simply.
  • the invention is also intended to provide a device for carrying out the method.
  • the actuator Due to the gradual reduction of the excitation frequency after the oscillation described in claim 3, the actuator alternately reaches one or the other end position without the risk that it will return to its passive position.
  • the claim 4 is particularly for a symmetrical design of the actuating device, i.e. largely the same design of the electromagnets, advantageous implementation of the method directed, since the vibration excitation is particularly intense if during the half-oscillation during which the armature moves towards one of the electromagnets, a force flow that attracts the armature emanates from the latter.
  • the claim 5 characterizes the basic structure of a device for performing the method.
  • Claim 6 is directed to an embodiment of a circuit for generating square-wave voltage signals.
  • the claim 9 characterizes a particularly simple embodiment of a sensor for detecting an end position of the valve member.
  • DE-A 28 15 849 an electromagnetic valve control for piston machines is known.
  • a single electromagnet is provided, which in the excited state attracts an armature connected to the valve member and the valve against the force of a closing spring moved to the open position.
  • a square-wave voltage signal is also generated there to excite the electromagnet.
  • a peculiarity of valve controls according to DE-A 28 15 849 is that they require relatively high currents and a lot of electrical energy, since all the energy required to open the valve must be applied electrically.
  • Electromagnetically operating control devices can be used in a variety of ways, for example for oscillatingly movable control elements on displacement machines, in particular for the gas exchange valves of internal combustion engines.
  • Fig. 1 shows as an actuator a poppet valve 2, on the shaft 4, an armature 6 is attached.
  • the shaft 4 is movably guided within a housing 8 and extends through the core 10 of an electromagnet, the overall cross-section of which is U-shaped, the winding of which is designated by 12.
  • the housing 8 there is a core 14 of a second electromagnet with a winding 16 opposite the core 10.
  • the two electromagnets are arranged within an opening of the housing 8, their mutual distance being given by a bushing 18 and by means of a bushing on the housing 8 screwed lid 20 are held.
  • a coil spring 22 and 24 is arranged between the armature 6 and each of the two cores 14 and 10, a coil spring 22 and 24 is arranged.
  • the two coil springs 22 and 24 counteract each other and hold the armature 6 in the illustrated central position between the end faces of the two cores 10 and 14.
  • the coil springs 22 and 24 together with the armature 6 and the poppet valve 2 form an oscillatory system, the natural frequency of which is greater than the maximum operating frequency provided for actuating the poppet valve.
  • an output stage 26 is provided, which is connected via a changeover switch 28 to a voltage / frequency converter 30 and to a control circuit 32.
  • a start element 34 is connected upstream of the voltage / frequency converter 30 and is additionally connected to the changeover switch 28.
  • a line 36 is shown in broken lines and connects a sensor 38 attached to the core 14 to the starting element 34 via an evaluation circuit 40.
  • the start member 34 When a start button is pressed, the start member 34 generates a square-wave signal according to part a) of FIG. 2 at its output directly connected to the changeover switch 28. At its output connected to the voltage / frequency converter 30, the starter 34 generates a certain voltage that slowly decreases.
  • the voltage / frequency converter 30 At its output connected to the changeover switch 28, the voltage / frequency converter 30 generates a square-wave signal with a pulse duty factor of 50%, the frequency of which is initially greater according to the voltage according to b) than the resonance frequency of the valve and corresponding to the decrease in voltage according to b) slowly decreases to the resonance frequency.
  • the frequency change of the square-wave signal according to c) is so slow that the valve is excited for a sufficiently long time when the resonance frequency is reached, so that the armature 6 oscillates in alternating contact with the cores 10 and 14.
  • This system is detected by the sensor 38, so that the evaluation circuit 40 outputs a signal d) to the start element 34, whereupon the voltage supplied to the voltage / frequency converter 30 decreases more rapidly to zero and the frequency of the square-wave signal according to c) decreases accordingly to zero, so that in the final state one of the two windings 12 or 16 remains energized.
  • the armature 6 and thus the valve follow the excitations of the electromagnets, so that the valve is in a well-defined position and is activated.
  • the square-wave voltage according to a) After reaching the voltage zero, the square-wave voltage according to a) returns to zero with a slight time delay, whereupon the changeover switch 28 switches over and one of the windings 12 and 16 is excited according to the output signal of the control circuit 32 and the other is not excited.
  • the armature 6 is preferably in the extreme positions of the valve in direct contact with the core 10 or 14.
  • the poppet valve 2 in the closed position is in sealing contact with a valve seat (not shown)
  • embodiments are possible in which a smaller one in the closed position Gap between anchor 6 and core 14 remains.
  • this gap greatly increases the current through the winding 16 required to hold the valve in the closed position.
  • the sensor 38 which in the example shown is a component which responds to mechanical vibrations in the hearing frequency range or above, can also be an induction coil which comprises one of the feed lines to one of the windings 12 or 16.
  • the armature 6 strikes the associated core, the current flow through the winding changes suddenly, which causes a voltage signal in the induction coil which can be evaluated in the evaluation circuit 40.
  • the switchover of the switch 28 takes place with a slight delay when the frequency reaches zero.
  • the change over time in the voltage generated by integrator 46 can be selected in a wide variety of ways.
  • the voltage can be kept at a constant value corresponding to the resonance frequency of the oscillatable system with the aid of a timing element before it decreases.

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)
  • Magnetically Actuated Valves (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
EP83107878A 1983-03-04 1983-08-09 Verfahren und Vorrichtung zum Aktivieren einer elektromagnetischen Stelleinrichtung Expired EP0118591B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3307683A DE3307683C1 (de) 1983-03-04 1983-03-04 Verfahren zum Aktivieren einer elektromagnetisch arbeitenden Stelleinrichtung sowie Vorrichtung zum Durchfuehren des Verfahrens
DE3307683 1983-03-04

Publications (2)

Publication Number Publication Date
EP0118591A1 EP0118591A1 (de) 1984-09-19
EP0118591B1 true EP0118591B1 (de) 1986-02-26

Family

ID=6192512

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83107878A Expired EP0118591B1 (de) 1983-03-04 1983-08-09 Verfahren und Vorrichtung zum Aktivieren einer elektromagnetischen Stelleinrichtung

Country Status (4)

Country Link
US (1) US4544986A (enrdf_load_stackoverflow)
EP (1) EP0118591B1 (enrdf_load_stackoverflow)
JP (1) JPS59162759A (enrdf_load_stackoverflow)
DE (2) DE3307683C1 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19954416A1 (de) * 1999-11-12 2001-05-17 Bayerische Motoren Werke Ag Verfahren zum Anschwingen eines elektromagnetischen Aktuators
DE10332489A1 (de) * 2003-07-16 2005-02-24 Mahle Filtersysteme Gmbh Verfahren zum Anschwingen einer elektromagnetischen Stelleinrichtung

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DE3500530A1 (de) * 1985-01-09 1986-07-10 Binder Magnete GmbH, 7730 Villingen-Schwenningen Vorrichtung zur elektromagnetischen steuerung von hubventilen
DE3513103A1 (de) * 1985-04-12 1986-10-16 Fleck, Andreas, 2000 Hamburg Elektromagnetisch arbeitende stellvorrichtung
DE3513107A1 (de) * 1985-04-12 1986-10-16 Fleck, Andreas, 2000 Hamburg Elektromagnetisch arbeitende stelleinrichtung
DE3513109A1 (de) * 1985-04-12 1986-10-16 Fleck, Andreas, 2000 Hamburg Elektromagnetisch arbeitende stellvorrichtung
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JP3315275B2 (ja) * 1994-11-04 2002-08-19 本田技研工業株式会社 対向二ソレノイド型電磁弁の制御装置
JP3134724B2 (ja) * 1995-02-15 2001-02-13 トヨタ自動車株式会社 内燃機関の弁駆動装置
DE19518056B4 (de) * 1995-05-17 2005-04-07 Fev Motorentechnik Gmbh Einrichtung zur Steuerung der Ankerbewegung einer elektromagnetischen Schaltanordnung und Verfahren zur Ansteuerung
DE19529152B4 (de) * 1995-08-08 2005-12-29 Fev Motorentechnik Gmbh Aus der Ruhelage selbstanziehender elektromagnetischer Aktuator
JP3179349B2 (ja) * 1996-04-03 2001-06-25 三菱電機株式会社 開閉装置
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DE19843075A1 (de) * 1998-07-07 2000-01-13 Daimler Chrysler Ag Magnetische Abschirmung eines Aktors zur elektromagnetischen Ventilsteuerung
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JP2000304153A (ja) 1999-04-19 2000-11-02 Honda Motor Co Ltd 電磁石アクチュエータ駆動装置
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JP3617413B2 (ja) * 2000-06-02 2005-02-02 日産自動車株式会社 電磁駆動弁の制御装置
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ITBO20010389A1 (it) 2001-06-19 2002-12-19 Magneti Marelli Spa Metodo di controllo di un attuatore elettromagnetico per il comando di una valvola di un motore a partire da una condizione di riposo
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Publication number Priority date Publication date Assignee Title
DE19954416A1 (de) * 1999-11-12 2001-05-17 Bayerische Motoren Werke Ag Verfahren zum Anschwingen eines elektromagnetischen Aktuators
DE10332489A1 (de) * 2003-07-16 2005-02-24 Mahle Filtersysteme Gmbh Verfahren zum Anschwingen einer elektromagnetischen Stelleinrichtung

Also Published As

Publication number Publication date
JPS59162759A (ja) 1984-09-13
JPS649827B2 (enrdf_load_stackoverflow) 1989-02-20
DE3362302D1 (en) 1986-04-03
DE3307683C1 (de) 1984-07-26
EP0118591A1 (de) 1984-09-19
US4544986A (en) 1985-10-01

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