DE10003142A1 - Valve control for internal combustion engines with an electro-magnetic actuator equipped with gas springs - Google Patents

Valve control for internal combustion engines with an electro-magnetic actuator equipped with gas springs

Info

Publication number
DE10003142A1
DE10003142A1 DE2000103142 DE10003142A DE10003142A1 DE 10003142 A1 DE10003142 A1 DE 10003142A1 DE 2000103142 DE2000103142 DE 2000103142 DE 10003142 A DE10003142 A DE 10003142A DE 10003142 A1 DE10003142 A1 DE 10003142A1
Authority
DE
Germany
Prior art keywords
gas springs
internal combustion
gas
valve control
armature
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Withdrawn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
DE2000103142
Other languages
German (de)
Inventor
Hans-Joerg 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
Priority to DE2000103142 priority Critical patent/DE10003142A1/en
Priority claimed from DE2000510513 external-priority patent/DE50010513D1/en
Publication of DE10003142A1 publication Critical patent/DE10003142A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L9/00Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/04Valve-gear or valve arrangements actuated non-mechanically by electric means

Abstract

For a valve control for internal combustion engines with an electro-magnetic actuator equipped with gas springs with an armature oscillating between a closing magnet and an opening magnet against restoring forces of the gas springs, it is proposed to achieve a gas spring system with low sealing losses that the armature acts as a cylinder in a cylinder Actuator separating piston arranged in a slidably movable manner is formed between the two gas springs, a medium having molecules larger than the size of air molecules being used for the gas springs.

Description

The invention relates to a preamble of claim 1 Valve control for internal combustion engines with one equipped with gas springs electro-magnetic actuator, one with a gas exchange valve in the drive connecting armature between a closing magnet and an opening magnet is arranged oscillating against restoring forces of the gas springs, the gas springs separated from each other by means of the armature from a supercharger A gas can be measured via controllable valves and from the gas springs is triggered via controllable drain valves.

Such a valve control is known for example from US 5,611,303, the design of the gas springs on both sides of the armature via at this the pipe sections arranged in connection with a stroke adjustment of the Actuator to a complex seal arrangement leads to considerable friction losses on the one hand and sealing losses of the sealing arrangement on the other. Sealing losses can be achieved by supplying the Gas springs from the rechargeable memory can be compensated, but this leads to a increased power consumption of an air pump supplying the memory.

The invention is based, for a generic valve control the task to show a gas spring system with lower sealing losses.

This object is achieved with the patent claim 1 in that the armature is designed as a separating piston slidably arranged in a cylinder of the actuator between two gas springs, a medium with the size of air molecules being used for the gas springs.

The advantage of the invention can be seen in the fact that the same, for air as a medium used sealing gap when using a medium with the air molecules in their Size significantly exceed molecules the flow or seal losses are significantly reduced.

Carbon dioxide is proposed as an advantageously suitable medium for this purpose, where ver produced for this purpose preferably in the internal combustion engine is applied.

For the use of the generated during combustion in the internal combustion engine In a further embodiment, carbon dioxide is proposed to be on the exhaust side Carbon dioxide of the internal combustion engine via a cleaning and / or cooling device device is supplied to the memory and that the assigned to the gas springs measuring valves and drain valves over load ranges of the internal combustion engine controls the adjustment of adapted spring characteristics.

The invention is based on a case schematically shown in the drawing game of a valve control described.

A valve control 1 for an internal combustion engine, not shown, comprises an electro-magnetic actuator 2 with gas springs 3 , 4 , with an armature 6 in drive connection with a gas exchange valve 5 between a closing magnet 7 and an opening magnet 8 against restoring forces of the gas springs 3 , 4, oscillating is arranged.

The gas springs 3, and 4 is metered from a rechargeable storage 9 via lines 9 'and 9 "gas via controllable valves 10, wherein 11 is the gas discharged from the gas springs 3 and 4. via actuatable discharge valves.

In order to achieve a gas spring system with low sealing losses, it is proposed according to the invention that the armature 6 is designed as a separating piston 13 which is slidably arranged in a cylinder 12 of the actuator 2 between the two gas springs 3 and 4 , with a medium for the gas springs 3 and 4 with molecules larger than the size of air molecules is used.

According to the invention, carbon dioxide (CO 2 ) is preferably used as the medium. This gives the advantage of using carbon dioxide that arises during combustion in an internal combustion engine.

In order to achieve a reliable valve control 1 , the exhaust-side carbon dioxide of the internal combustion engine is fed to the store 9 via a cleaning and / or cooling device 14 , from which the carbon dioxide flows in a controlled manner to the gas springs 3 and 4 via lines 9 'and 9 ". The controlled inflow is controlled made so that the gas springs 3 and 4 assigned metering valves 10 and Ablass-Ven tile 11 controlled over load ranges of the internal combustion engine to adjust adjusted spring characteristics of the gas springs 3 and 4 .

Claims (5)

1. valve control for internal combustion engines with an electro-magnetic actuator equipped with gas springs,
  • - In which a with a gas exchange valve ( 5 ) in drive connection armature ( 6 ) between a closing magnet ( 7 ) and an opening magnet ( 8 ) is arranged oscillating against restoring forces of the gas springs ( 3 , 4 ), wherein
  • - The gas springs ( 3 , 4 ) separated from one another by means of the armature ( 6 ) from a rechargeable memory ( 9 ), a gas via controllable Ven tile ( 10 ) and
  • - Gas is released from the gas springs ( 3 , 4 ) via controllable drain valves ( 11 ),
characterized by
  • - That the armature ( 6 ) as a in a cylinder ( 12 ) of the actuator ( 2 ) slidably movably arranged separating piston ( 13 ) between the two gas springs ( 3 , 4 ) is formed, wherein
  • - For the gas springs ( 3 , 4 ) a medium is used with the size of molecules larger than air molecules.
2. Valve control according to claim 1, characterized in  
- That the medium is carbon dioxide (CO 2 ).
3. Valve control according to claim 2, characterized in that carbon dioxide (CO 2 ) generated in the internal combustion engine is used.
4. Valve control according to claim 3, characterized in
  • - That the exhaust-side carbon dioxide (CO 2 ) of the internal combustion engine via a cleaning and / or cooling device ( 14 ) to the memory ( 9 ) and
  • - That the gas springs ( 3 , 4 ) assigned metering valves ( 10 ) and drain valves ( 11 ) ge over load areas of the internal combustion engine controls the adjustment of adjusted spring characteristics.
DE2000103142 2000-01-26 2000-01-26 Valve control for internal combustion engines with an electro-magnetic actuator equipped with gas springs Withdrawn DE10003142A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2000103142 DE10003142A1 (en) 2000-01-26 2000-01-26 Valve control for internal combustion engines with an electro-magnetic actuator equipped with gas springs

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE2000103142 DE10003142A1 (en) 2000-01-26 2000-01-26 Valve control for internal combustion engines with an electro-magnetic actuator equipped with gas springs
DE2000510513 DE50010513D1 (en) 2000-01-26 2000-12-02 Valve control for internal combustion engines with an equipped with gas springs electro-magnetic actuator
EP20000126375 EP1120550B1 (en) 2000-01-26 2000-12-02 Engine valve drive with electromagnetic actuators comprising pneumatic return springs
ES00126375T ES2239996T3 (en) 2000-01-26 2000-12-02 Valve control system for internal combustion engines with an electromagnetic actuator equipped with gas springs.

Publications (1)

Publication Number Publication Date
DE10003142A1 true DE10003142A1 (en) 2001-08-02

Family

ID=7628682

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2000103142 Withdrawn DE10003142A1 (en) 2000-01-26 2000-01-26 Valve control for internal combustion engines with an electro-magnetic actuator equipped with gas springs

Country Status (3)

Country Link
EP (1) EP1120550B1 (en)
DE (1) DE10003142A1 (en)
ES (1) ES2239996T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004044390A1 (en) * 2002-11-12 2004-05-27 Duckdive Pty. Limited High speed solenoid valve

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19725218A1 (en) * 1997-06-15 1998-12-24 Daimler Benz Ag Device for actuating a gas exchange valve for an internal combustion engine
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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3106890B2 (en) 1995-01-11 2000-11-06 トヨタ自動車株式会社 Valve drive for internal combustion engine
DE29804549U1 (en) * 1998-03-14 1998-07-02 Fev Motorentech Gmbh & Co Kg Electromagnetically actuated gas exchange valve for a piston internal combustion engine with pneumatic return springs
JP2000027616A (en) * 1998-07-10 2000-01-25 Nissan Motor Co Ltd Valve system for internal combustion engine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19725218A1 (en) * 1997-06-15 1998-12-24 Daimler Benz Ag Device for actuating a gas exchange valve for an internal combustion engine
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
ES2239996T3 (en) 2005-10-16
EP1120550A3 (en) 2001-12-05
EP1120550A2 (en) 2001-08-01
EP1120550B1 (en) 2005-06-08

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8141 Disposal/no request for examination