EP1120548B1 - Engine valve drive with electromagnetic actuators comprising pneumatic return springs - Google Patents

Engine valve drive with electromagnetic actuators comprising pneumatic return springs Download PDF

Info

Publication number
EP1120548B1
EP1120548B1 EP00126373A EP00126373A EP1120548B1 EP 1120548 B1 EP1120548 B1 EP 1120548B1 EP 00126373 A EP00126373 A EP 00126373A EP 00126373 A EP00126373 A EP 00126373A EP 1120548 B1 EP1120548 B1 EP 1120548B1
Authority
EP
European Patent Office
Prior art keywords
armature
magnet
gas
valves
piston
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
EP00126373A
Other languages
German (de)
French (fr)
Other versions
EP1120548A2 (en
EP1120548A3 (en
Inventor
Hans-Jörg Steffens
Frank Meissner
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1120548A2 publication Critical patent/EP1120548A2/en
Publication of EP1120548A3 publication Critical patent/EP1120548A3/en
Application granted granted Critical
Publication of EP1120548B1 publication Critical patent/EP1120548B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • Such a valve control is known for example from US 5,611,303, the interaction of Zumess valves and drain valves with regard to a stroke-adjustable actuator is tuned.
  • This embodiment also requires the Forming the gas springs in a tube arranged as a piston, the center of is divided an anchor section.
  • electro-magnetic actuator according to the invention with pressure-controlled operable Anchor or separating piston with no-current closing magnet and opening magnet arises in an advantageous embodiment of the invention further that the Separating piston or armature when switching off the engine pressure controlled in Closed position of the gas exchange valve is arranged, wherein the closing magnet struck separating piston or armature by means of permanent magnets on Closing magnet is held.
  • the invention is based on an embodiment schematically illustrated in the drawing described.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Description

Die Erfindung bezieht sich nach dem Oberbegriff des Patentanspruches 1 auf eine Ventilsteuerung für Brennkraftmaschinen mit einem mit Gasfedern ausgerüsteten elektro-magnetischen Aktor, bei dem ein mit einem Gaswechselventil in Antriebsverbindung stehender Anker zwischen einem Schließmagneten und einem Öffnungsmagneten gegen Rückstellkräfte der Gasfedern oszillierend angeordnet ist, wobei den mittels des Ankers voneinander getrennten Gasfedern aus einem aufladbaren Speicher ein Gas über ansteuerbare Ventile zugemessen und aus den Gasfedern über ansteuerbare Ablass-Ventile Gas abgelassen ist.The invention relates according to the preamble of claim 1 to a Valve control for internal combustion engines equipped with a gas springs Electromagnetic actuator, in which one with a gas exchange valve in drive connection standing armature between a closing magnet and an opening magnet is arranged to oscillate against restoring forces of the gas springs, wherein the separated by means of the armature gas springs from a rechargeable Memory a gas metered via controllable valves and from the gas springs via controllable drain valves gas is drained.

Eine derartige Ventilsteuerung ist beispielsweise aus der US 5,611,303 bekannt, wobei das Zusammenspiel von Zumess-Ventilen und Ablass-Ventilen im Hinblick auf eine hubverstellbaren Aktor abgestimmt ist. Diese Ausgestaltung bedingt ferner die Ausbildung der Gasfedern in einem als Kolben angeordneten Rohr, das mittig von einem Ankerabschnitt unterteilt ist.Such a valve control is known for example from US 5,611,303, the interaction of Zumess valves and drain valves with regard to a stroke-adjustable actuator is tuned. This embodiment also requires the Forming the gas springs in a tube arranged as a piston, the center of is divided an anchor section.

Der Erfindung liegt die Aufgabe zugrunde, die gattungsgemäße Ventilsteuerung bei einfachem Aufbau so zu gestalten, dass variable Federkennlinien in Verbindung mit einer gesteuerten Anschlagdämpfung erzielbar sind. The invention is based on the object, the generic valve control simple structure to be designed so that variable spring characteristics in conjunction with a controlled impact damping can be achieved.

Diese Aufgabe ist mit dem Patenanspruch 1 dadurch gelöst, dass der Anker als ein in einem Zylinder des Aktors gleitbeweglich dicht angeordneter Trennkolben zwischen beiden Gasfedern ausgebildet ist, und dass die Zumess-Ventile und die Ablass-Ventile in Abhängigkeit von Lastbereichen der Brennkraftmaschine gesteuert der Einstellung angepasster Federkennlinien dienen, wobei die Ablass-Ventile zusätzlich der Steuerung eines gedämpften Anschlages des Trennkolbens bzw. des Ankers gegen den Schließmagneten und gegen den Öffnungsmagneten dienen.This object is achieved with the patent claim 1, characterized in that the anchor as a in a cylinder of the actuator slidably arranged sealing piston between two gas springs is formed, and that the metering valves and the drain valves controlled as a function of load ranges of the internal combustion engine the setting of adapted spring characteristics, the drain valves additionally the control of a damped stop of the separating piston or the Anchor against the closing magnet and against the opening magnet serve.

Mit der Erfindung sind in vorteilhafter Weise bei einfachem Aufbau in Abhängigkeit von Lastbereichen der Brennkraftmaschine variabel angepasste Federkennlinien erzielbar, wobei zusätzlich unabhängig von der jeweiligen Federkennlinie eine gesteuerte Anschlagdämpfung erreicht ist.With the invention are in an advantageous manner with a simple structure depending of load ranges of the engine variably adapted spring characteristics achievable, wherein additionally independent of the respective spring characteristic a controlled Stop damping is achieved.

Mit dem erfindungsgemäßen elektro-magnetischen Aktor mit druckgesteuert betätigbarem Anker bzw. Trennkolben bei unbestromtem Schließmagnet und Öffnungsmagnet ergibt sich in vorteilhafter Weiterbildung der Erfindung ferner, dass der Trennkolben bzw. Anker beim Abstellen der Brennkraftmaschine druckgesteuert in Schließstellung des Gaswechselventils angeordnet ist, wobei der am Schließmagneten angeschlagene Trennkolben bzw. Anker mittels Dauermagnete am Schließmagneten gehalten ist.With the electro-magnetic actuator according to the invention with pressure-controlled operable Anchor or separating piston with no-current closing magnet and opening magnet arises in an advantageous embodiment of the invention further that the Separating piston or armature when switching off the engine pressure controlled in Closed position of the gas exchange valve is arranged, wherein the closing magnet struck separating piston or armature by means of permanent magnets on Closing magnet is held.

Mit der Erfindung sind in vorteilhafter Weise bei abgestellter Brennkraftmaschine offenstehende Gaswechselventile vermieden, so dass die Brennkraftmaschine aufgrund der geschlossenen Gaswechselventile die bekannte Bremswirkung aufweist.With the invention are in an advantageous manner with the internal combustion engine open gas exchange valves avoided, so that the internal combustion engine due the closed gas exchange valves has the known braking effect.

Die Erfindung ist anhand eines in der Zeichnung schematisch dargestellten Ausführungsbeispiels beschrieben.The invention is based on an embodiment schematically illustrated in the drawing described.

Eine Ventilsteuerung 1 für eine nicht gezeigte Brennkraftmaschine umfasst einen Aktor 2 mit Gasfedern 3, 4, wobei ein mit einem Gaswechselventil 5 in Antriebsverbindung stehender Anker 6 zwischen einem Schließmagneten 7 und einem Öffnungsmagneten 8 gegen Rückstellkräfte der Gasfedern 3, 4 oszillierend angeordnet ist. Den Gasfedern 3 und 4 ist aus einem aufladbaren Speicher 9 über Leitungen 9' und 9" jeweils ein Gas über ansteuerbare Ventile 10 zugemessen. Weiter ist über ansteuerbare Ablass-Ventile 11 Gas aus den Gasfedern 3 und 4 abgelassen.A valve controller 1 for an internal combustion engine, not shown, includes a Actuator 2 with gas springs 3, 4, one with a gas exchange valve 5 in drive connection standing armature 6 between a closing magnet 7 and a Opening magnet 8 against restoring forces of the gas springs 3, 4 arranged oscillating is. The gas springs 3 and 4 is from a rechargeable memory 9 via Lines 9 'and 9 "each metered a gas via controllable valves 10. Next 11 gas is discharged from the gas springs 3 and 4 via controllable drain valves.

Zur Erzielung variabler Federkennlinien in Verbindung mit einer gesteuerten Anschlagdämpfung wird bei einfachem Aufbau des Aktors 2 vorgeschlagen, dass der Anker 6 als ein in einem Zylinder 12 des Aktors 2 gleitbeweglich dicht angeordneter Trennkolben 13 zwischen beiden Gasfedern 3 und 4 ausgebildet ist und dass die Zumess-Ventile 10 und die Ablass-Ventile 11 in Abhängigkeit von Lastbereichen der Brennkraftmaschine gesteuert der Einstellung angepasster Federkennlinien dienen, wobei die Ablass-Ventile 11 zusätzlich der Steuerung eines gedämpften Anschlages des Trennkolbens 13 bzw. des Ankers 12 gegen den Schließmagneten 7 und gegen den Öffnungsmagneten dienen.To achieve variable spring characteristics in conjunction with a controlled stop damping is proposed in a simple structure of the actuator 2 that the Anchor 6 as a sliding in a cylinder 12 of the actuator 2 arranged tightly Separating piston 13 is formed between two gas springs 3 and 4 and that the Zumess valves 10 and the drain valves 11 depending on load ranges of Internal combustion engine controlled serve the setting of adapted spring characteristics, wherein the drain valves 11 in addition to the control of a damped stop of the separating piston 13 and the armature 12 against the closing magnet 7 and against serve the opening magnet.

Wie aus der DE 197 33 186 A1 per se bekannt, kann auch beim erfindungsgemäßen Aktor 2 der Anker 6 auch bei nicht bestromten Schließmagnet und Öffnungsmagnet druckgesteuert betätigt werden. Dies kann für eine vorteilhafte Steuerung des Aktors 2 dahin genutzt werden, dass der Trennkolben 13 bzw. Anker 12 beim Abstellen der Brennkraftmaschine druckgesteuert in Schließstellung des Gaswechselventils 5 angeordnet ist, wobei der am Schließmagneten 7 angeschlagene Trennkolben 13 mittels eines Dauermagneten 14 am Schließmagneten 7 gehalten ist.As known from DE 197 33 186 A1 per se, can also in the inventive Actuator 2, the armature 6 even when not energized closing magnet and opening magnet be operated pressure controlled. This can be for a beneficial Control of the actuator 2 are used so that the separating piston 13 or anchor 12 when switching off the engine pressure controlled in the closed position of the Gas exchange valve 5 is arranged, wherein the posted on the closing magnet 7 Separating piston 13 held by a permanent magnet 14 on the closing magnet 7 is.

Damit können in vorteilhafter Weise bei abgestellter Brennkraftmaschine sämtliche Gaswechselventile in Schließstellung gebracht werden mit dem weiteren Vorteil der Erzielung einer Bremswirkung der Brennkraftmaschine für ein Fahrzeug.This can be in an advantageous manner with the internal combustion engine all Gas exchange valves are brought into the closed position with the further advantage of Achieving a braking effect of the internal combustion engine for a vehicle.

Claims (2)

  1. A valve control system for internal combustion engines comprising an electromagnetic actuator equipped with pneumatic springs,
    wherein an armature (6) connected for drive purposes to a gas change valve (5) is disposed so as to oscillate between a closing magnet (7) and an opening magnet (8) against restoring forces of the pneumatic springs (3, 4), wherein
    the pneumatic springs (3, 4), separated from one another by the armature (6), are supplied with a metered amount of gas through actuatable valves (10) from a chargeable reservoir (9) and
    gas is discharged from the pneumatic springs (3, 4) through actuatable discharge valves (11),
       characterised in that
    the armature (6) is a separating piston (13) sealingly slidable in a cylinder (12) of the actuator (2) between the two pneumatic springs (3, 4) and
    the metering valves (10) and the discharge valves (11) are adapted to set suitable spring characteristics in dependence on load regions of the engine, wherein
    the discharge valves (11) are also adapted to damp and control the impact of the piston (13) or armature (12) against the closing magnet (7) and against the opening magnet (8).
  2. A valve control system according to claim 1, characterised in that
    when the engine is switched off the piston (13) or armature (12), controlled by pressure, is disposed in the closed position of the gas change valve (5), wherein
    the piston (13) striking the closing magnet (7) is held against the closing magnet (7) by a permanent magnet (14).
EP00126373A 2000-01-26 2000-12-02 Engine valve drive with electromagnetic actuators comprising pneumatic return springs Expired - Lifetime EP1120548B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10003116A DE10003116A1 (en) 2000-01-26 2000-01-26 Valve control for internal combustion engines with an electro-magnetic actuator equipped with gas springs
DE10003116 2000-01-26

Publications (3)

Publication Number Publication Date
EP1120548A2 EP1120548A2 (en) 2001-08-01
EP1120548A3 EP1120548A3 (en) 2001-12-05
EP1120548B1 true EP1120548B1 (en) 2005-07-27

Family

ID=7628666

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00126373A Expired - Lifetime EP1120548B1 (en) 2000-01-26 2000-12-02 Engine valve drive with electromagnetic actuators comprising pneumatic return springs

Country Status (3)

Country Link
EP (1) EP1120548B1 (en)
DE (2) DE10003116A1 (en)
ES (1) ES2242574T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023241760A1 (en) * 2022-06-13 2023-12-21 Alfred Jäger GmbH Magnetic actuating device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5022359A (en) * 1990-07-24 1991-06-11 North American Philips Corporation Actuator with energy recovery return
JP3106890B2 (en) 1995-01-11 2000-11-06 トヨタ自動車株式会社 Valve drive for internal combustion engine
DE19646938A1 (en) * 1996-11-13 1998-05-14 Bayerische Motoren Werke Ag Electromagnetic operating system for IC engine upper valve in cylinder head
DE19725218C2 (en) * 1997-06-15 2000-11-02 Daimler Chrysler Ag Device for actuating a gas exchange valve for an internal combustion engine
DE19733186A1 (en) 1997-07-31 1999-02-04 Fev Motorentech Gmbh & Co Kg Gas exchange valve apparatus for piston engine
DE29804549U1 (en) * 1998-03-14 1998-07-02 FEV Motorentechnik GmbH & Co. KG, 52078 Aachen Electromagnetically actuated gas exchange valve for a piston internal combustion engine with pneumatic return springs
DE19829858A1 (en) * 1998-07-05 2000-01-13 Bayerische Motoren Werke Ag Combined electromagnetic / pneumatic actuator for controlling a lift valve, in particular gas exchange valve of an internal combustion engine

Also Published As

Publication number Publication date
DE10003116A1 (en) 2001-08-02
EP1120548A2 (en) 2001-08-01
DE50010827D1 (en) 2005-09-01
ES2242574T3 (en) 2005-11-16
EP1120548A3 (en) 2001-12-05

Similar Documents

Publication Publication Date Title
EP0400395B1 (en) Shock absorber
DE10062999C5 (en) Adjustable vibration damper with a damping force control
DE19543080C2 (en) Device for controlling valves of an internal combustion engine, in particular the gas supply valve of a gas engine
EP0405123A2 (en) Two-way solenoid valve for bypass control
EP3631234B1 (en) Controllable vibration damper
EP0694693A1 (en) Method and device for valve control
DE19725218C2 (en) Device for actuating a gas exchange valve for an internal combustion engine
DE69700118T2 (en) Electrically operated trigger valve for a fuel injection pump
DE3446096A1 (en) SEAT VALVE DEVICE
AT410696B (en) VALVE DRIVE FOR A VALVE OF A COMBUSTION ENGINE
EP1974131B1 (en) Gas exchange valve actuating device
EP1456570B1 (en) Valve comprising a damping element
EP1120548B1 (en) Engine valve drive with electromagnetic actuators comprising pneumatic return springs
EP0976948B1 (en) Damping device for moving masses, particularly for electromagnetic drive systems
EP2176575B1 (en) Method for actuating an electromagnetic switching valve
EP1120549B1 (en) Engine valve drive with electromagnetic actuators comprising pneumatic return springs
DE19755276A1 (en) Electromagnetic actuator for controlling gas changeover valve in IC engine
EP0255668B1 (en) Hydraulic valve control device
WO2003016682A1 (en) Method for operating an electrohydraulic valve control system of an internal combustion engine, computer program and control and regulating device for operating an internal combustion engine
DE4423526C1 (en) Vibration damper with adjustable damping force
EP0500534A1 (en) Adjustable shock-absorber.
WO2020007536A1 (en) Electromagnetic actuating device particularly for opening and closing a valve device, valve device having an actuating device of this kind, controllable vibration damper comprising an actuating device of this kind and motor vehicle having a vibration damper of this kind
EP1120550B1 (en) Engine valve drive with electromagnetic actuators comprising pneumatic return springs
DE102022200173A1 (en) Electromechanically operated pressure medium control valve
DE19737597A1 (en) Electromagnetic actuator for controlled actuation of a gas changeover valve for an engine or processing machine

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): DE ES FR GB IT SE

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 TR

AX Request for extension of the european patent

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

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 TR

AX Request for extension of the european patent

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

17P Request for examination filed

Effective date: 20020514

AKX Designation fees paid

Free format text: DE ES FR GB IT SE

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT SE

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20050802

REF Corresponds to:

Ref document number: 50010827

Country of ref document: DE

Date of ref document: 20050901

Kind code of ref document: P

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2242574

Country of ref document: ES

Kind code of ref document: T3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20060131

Year of fee payment: 6

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20060428

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20061123

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20061206

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20061221

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20061231

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070703

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20061228

Year of fee payment: 7

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20071202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071203

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20081020

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071202

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20071203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071203

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071202