EP0354417B1 - Dispositif de positionnement pour une soupape d'échange gazeux - Google Patents

Dispositif de positionnement pour une soupape d'échange gazeux Download PDF

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Publication number
EP0354417B1
EP0354417B1 EP89113912A EP89113912A EP0354417B1 EP 0354417 B1 EP0354417 B1 EP 0354417B1 EP 89113912 A EP89113912 A EP 89113912A EP 89113912 A EP89113912 A EP 89113912A EP 0354417 B1 EP0354417 B1 EP 0354417B1
Authority
EP
European Patent Office
Prior art keywords
armature plate
sleeve
pole faces
control device
chamber
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
EP89113912A
Other languages
German (de)
English (en)
Other versions
EP0354417A1 (fr
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.)
Audi AG
Original Assignee
Audi 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 Audi AG filed Critical Audi AG
Publication of EP0354417A1 publication Critical patent/EP0354417A1/fr
Application granted granted Critical
Publication of EP0354417B1 publication Critical patent/EP0354417B1/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
    • 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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/14—Tappets; Push rods
    • F01L1/16—Silencing impact; Reducing wear

Definitions

  • the invention relates to an actuating device for a gas exchange valve according to the preamble of claim 1.
  • Such an actuator is known for example from DE-OS 30 24 109.
  • An armature plate which can be moved back and forth between two opposing magnets presses the gas exchange valve of an internal combustion engine into its open position in one position and is associated with the closed position of the gas exchange valve in its other position.
  • the magnets hold the anchor plate in their end positions.
  • B. a spring system the anchor plate in the direction of the drop from the pole face. The opposite pole face is then energized and captures the armature plate vibrating between the two end positions. This leads to an impact on the pole faces and a corresponding mechanical noise.
  • the invention is based, the impact noise to reduce.
  • the space which is located between the armature plate and the respectively spaced pole faces of the magnetic coils is closed, the armature plate having sealing means on its outer circumference which, by their abutment on the inner circumference of the sleeve closing the space between the pole faces
  • the armature plate having sealing means on its outer circumference which, by their abutment on the inner circumference of the sleeve closing the space between the pole faces
  • Throttles are provided that allow the compressed fluid to escape from one chamber to the other chamber in a controlled manner.
  • Figure 1 is a view of the system according to the invention, partly in section.
  • FIG. 2 shows a detail from FIG. 1, showing another embodiment of the invention.
  • the actuator for a gas exchange valve has a U-shaped core 10 for a pot magnet 12 and, opposite, a U-shaped core 14 for a pot magnet 16.
  • the two pole faces of the magnets 12 and 16 lie opposite one another.
  • An anchor plate 18 can be moved back and forth between them.
  • the pot magnet 10 has a cylindrical bore inside, into which a sleeve 20 which is integrally connected to the anchor plate 18 leads.
  • the opposite pot magnet 16 surrounds a cylindrical opening into which an extension 30 of the anchor plate 18 projects. Both the sleeve 20 and the extension 30 are at a short distance from the walls of the cores 10 and 14 of the pot magnets which are U-shaped in cross section.
  • the extension 30 of the anchor plate 18 presses on a plunger 32 which forms the stem of a gas exchange valve, which is not shown.
  • a helical spring 22 which is accommodated in the sleeve 20, presses the anchor plate 18 in the direction of the open position when it is attracted by the magnet 10, 12 associated with the closed position, wherein it is supported on an abutment 26.
  • a helical spring 24 presses the anchor plate 18 into the closed position when it bears against the magnet 14, 16 associated with the open position, wherein it is supported on an abutment 28.
  • the dead center or equilibrium state of the system when the magnet is not excited is centered between the opposing magnets 12 and 16.
  • the space between the pole faces of the magnets 10, 12 on the one hand and 14, 16 on the other hand is sealed laterally by a cylindrical sleeve 38, so that a closed chamber is formed.
  • This rammer is divided by the anchor plate 18 into an upper chamber 50 and a lower chamber 52. Due to the close guidance of the sleeve 20 in the cylindrical opening formed by the magnet 10, 12, no fluid can escape from the upper chamber 50 into this area, due to the tight guidance of the cylindrical extension in the cylindrical opening by the magnet 14, 16 is formed, an appreciable amount of fluid cannot escape from the lower chamber 52 into this area.
  • the chambers 50 and 52 thus enclose fluid and when the anchor plate 18 is moved back and forth from the upper to the lower position and vice versa, fluid is exchanged between the chambers 50 and 52.
  • the armature plate lies circumferentially sealingly against the sleeve 38.
  • a groove 34 can be formed on the circumference of the anchor plate 18, into which a sealing or piston ring 36 is inserted.
  • a lug can also be provided on the circumference of the anchor plate 18, which seals against the inner circumferential wall of the sleeve 38.
  • throttle bores 44 can be provided in the anchor plate, through which fluid can flow between the chambers 50 and 52.
  • overflow openings 42 are provided, for example in the form of holes in the sleeve 38, these holes of course sealing off from the outside have to be.
  • fluid can flow outside over the middle region of the path of the armature plate, when it comes from the contact to the pole faces of the one magnet to the contact to the pole face of the other magnet, and only in the end region of the path covered, when the sealing edge 36 or 40 has reached the upper or lower edge of the hole 42, there is no further flow around, and the last part of the path until shortly before the armature plate 18 strikes the pole face is dampened by the then compressed fluid.
  • the armature plate 18 is reciprocated by the mutual excitation of the magnets 12 and 16 and the action by the springs 22 and 24, the resistance due to fluid displacement should be low over a large area of the path.
  • the overflow openings 42 are provided, which enable an exchange of the fluid between the chambers 50 and 52. Only when approximately 80% to 90% of the total distance has been covered does the overflow opening close, since the sealing edge 36 or 40 has reached the outer edge of the overflow opening, and fluid exchange between the chambers 50 and 52 is only possible via bores which may be provided 44 possible in the anchor plate.
  • the fluid contained in the chamber which is constantly decreasing in volume, can only leak through the seal 40 or in the gaps formed by tolerance between the sleeve 20 and the inner circumference of the magnetic core 10 or through the gap between the extension 30 and escape the inner circumference of the core 14. This forms a fluid cushion shortly before the armature plate 18 strikes the pole faces of the magnets 10, 12 or 14, 16, which strongly dampens the impact and thus contributes to noise reduction.
  • the fluid enclosed in the chambers 50 and 52 can consist of air, but oil damping is also conceivable. If an oil mist is used for lubrication, the medium in the chamber is made up of air and oil.

Claims (4)

1. Dispositif de commande pour une soupape de gaz à changement de charge d'un moteur à combustion interne, comprenant
a) une plaque d'armature (18) mobile en va-et-vient, dont une position correspond à la position d'ouverture et l'autre position à la position de fermeture de la soupape de gaz,
b) une première bobine magnétique (10), des faces polaires de laquelle est approchée la plaque d'armature dans l'une de ses positions,
c) une seconde bobine magnétique (14), des faces polaires de laquelle est approchée la plaque d'armature (18) dans son autre position,
d) la plaque d'armature (18) étant guidée dans son déplacement dans un manchon (38),
caractérisé en ce que
e) l'espace compris entre les faces polaires respectives est fermé,
f) la plaque d'armature (18) est dotée sur sa périphérie extérieure de moyens d'étanchement (36,40), qui viennent s'appliquer contre la périphérie intérieure du manchon (38) pour étancher l'une par rapport à l'autre une chambre supérieure (50) et une chambre inférieure (52),
g) des étranglements (44) sont prévus, qui permettent l'échappement contrôlé du fluide comprimé de l'une (50) des chambres dans l'autre (52).
2. Dispositif de commande selon la revendication 1, caractérisé en ce que la plaque d'armature (18) présente, sur sa périphérie extérieure, un anneau d'étanchéité (36) inséré dans une gorge.
3. Dispositif de commande selon la revendication 1, caractérisé en ce que la plaque d'armature (18) présente, sur sa périphérie extérieure, un collet (40) qui vient s'appliquer contre la périphérie intérieure du manchon (38).
4. Dispositif de commande selon la revendication 1, caractérisé en ce que le manchon (38) est réalisé sous la forme d'une enveloppe cylindrique et présente des trous (42) dans son enveloppe.
EP89113912A 1988-08-09 1989-07-28 Dispositif de positionnement pour une soupape d'échange gazeux Expired - Lifetime EP0354417B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3826974 1988-08-09
DE3826974A DE3826974A1 (de) 1988-08-09 1988-08-09 Stelleinrichtung fuer ein gaswechselventil

Publications (2)

Publication Number Publication Date
EP0354417A1 EP0354417A1 (fr) 1990-02-14
EP0354417B1 true EP0354417B1 (fr) 1992-05-06

Family

ID=6360497

Family Applications (2)

Application Number Title Priority Date Filing Date
EP89113912A Expired - Lifetime EP0354417B1 (fr) 1988-08-09 1989-07-28 Dispositif de positionnement pour une soupape d'échange gazeux
EP89908803A Pending EP0432174A1 (fr) 1988-08-09 1989-07-28 Dispositif de reglage de soupape a deux voies de gaz

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP89908803A Pending EP0432174A1 (fr) 1988-08-09 1989-07-28 Dispositif de reglage de soupape a deux voies de gaz

Country Status (6)

Country Link
US (1) US5223812A (fr)
EP (2) EP0354417B1 (fr)
JP (1) JP2656360B2 (fr)
DE (2) DE3826974A1 (fr)
ES (1) ES2031319T3 (fr)
WO (1) WO1990001616A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0870906A1 (fr) 1997-04-08 1998-10-14 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
DE10248070B4 (de) * 2001-12-11 2006-04-20 Visteon Global Technologies, Inc., Dearborn Elektromagnetische Ventilbetätigung mit weichem Anschlag an den Ventilsitz

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1255447B (it) * 1991-11-08 1995-10-31 Iveco Fiat Motore provvisto di un dispositivo di frenatura continua, particolarmente per un veicolo industriale.
US5365210A (en) * 1993-09-21 1994-11-15 Alliedsignal Inc. Latching solenoid with manual override
GB9326245D0 (en) * 1993-12-23 1994-02-23 Perkins Ltd An improved method for operating a two coil solenoid valve and control circuitry therefor
US5716312A (en) * 1996-01-16 1998-02-10 Kristel; Ira B. Vacuum cylinder
DE29615396U1 (de) 1996-09-04 1998-01-08 Fev Motorentech Gmbh & Co Kg Elektromagnetischer Aktuator mit Aufschlagdämpfung
US5878704A (en) * 1997-01-04 1999-03-09 Fev Motorentechnik Gmbh & Co. Kg Electromagnetic actuator, including sound muffling means, for operating a cylinder valve
DE19835402C1 (de) * 1998-08-05 2000-02-10 Meta Motoren Energietech Elektromagnetisch arbeitende Vorrichtung zum Betätigen eines Ventils
JP3921311B2 (ja) * 1998-10-30 2007-05-30 株式会社日立製作所 機関弁の電磁駆動装置
DE19905176A1 (de) * 1999-02-09 2000-08-10 Fev Motorentech Gmbh Elektromagnetischer Aktuator mit Luftdämpfungselement
US6572074B2 (en) * 2001-04-18 2003-06-03 Ford Global Technologies, Llc Electromechanical valve actuator with air piston to aid in soft landing
DE102005026415A1 (de) * 2005-06-03 2006-12-07 Siemens Ag Elektromagnetische Antriebseinrichtung
US7871058B2 (en) * 2007-07-25 2011-01-18 Illinois Tool Works Inc. Dual inline solenoid-actuated hot melt adhesive dispensing valve assembly
CN112412567B (zh) * 2020-10-12 2021-09-07 绵阳富临精工机械股份有限公司 一种凸轮移位电磁执行器

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3024109A1 (de) * 1980-06-27 1982-01-21 Pischinger, Franz, Prof. Dipl.-Ing. Dr.Techn., 5100 Aachen Elektromagnetisch arbeitende stelleinrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3738337A (en) * 1971-12-30 1973-06-12 P Massie Electrically operated hydraulic valve particularly adapted for pollution-free electronically controlled internal combustion engine
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
DE3513106A1 (de) * 1985-04-12 1986-10-16 Fleck, Andreas, 2000 Hamburg Elektromagnetisch arbeitende stelleinrichtung
US4794890A (en) * 1987-03-03 1989-01-03 Magnavox Government And Industrial Electronics Company Electromagnetic valve actuator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3024109A1 (de) * 1980-06-27 1982-01-21 Pischinger, Franz, Prof. Dipl.-Ing. Dr.Techn., 5100 Aachen Elektromagnetisch arbeitende stelleinrichtung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0870906A1 (fr) 1997-04-08 1998-10-14 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
DE10248070B4 (de) * 2001-12-11 2006-04-20 Visteon Global Technologies, Inc., Dearborn Elektromagnetische Ventilbetätigung mit weichem Anschlag an den Ventilsitz

Also Published As

Publication number Publication date
US5223812A (en) 1993-06-29
JP2656360B2 (ja) 1997-09-24
JPH04502192A (ja) 1992-04-16
EP0354417A1 (fr) 1990-02-14
WO1990001616A1 (fr) 1990-02-22
ES2031319T3 (es) 1992-12-01
DE58901320D1 (de) 1992-06-11
DE3826974A1 (de) 1990-02-15
EP0432174A1 (fr) 1991-06-19

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