EP1143115A3 - Return spring arrangement for valve operation of an internal combustion engine - Google Patents

Return spring arrangement for valve operation of an internal combustion engine Download PDF

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Publication number
EP1143115A3
EP1143115A3 EP01108364A EP01108364A EP1143115A3 EP 1143115 A3 EP1143115 A3 EP 1143115A3 EP 01108364 A EP01108364 A EP 01108364A EP 01108364 A EP01108364 A EP 01108364A EP 1143115 A3 EP1143115 A3 EP 1143115A3
Authority
EP
European Patent Office
Prior art keywords
gas
spring
internal combustion
combustion engine
exchange valve
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.)
Granted
Application number
EP01108364A
Other languages
German (de)
French (fr)
Other versions
EP1143115A2 (en
EP1143115B1 (en
Inventor
Wolfgang Semet
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 EP1143115A2 publication Critical patent/EP1143115A2/en
Publication of EP1143115A3 publication Critical patent/EP1143115A3/en
Application granted granted Critical
Publication of EP1143115B1 publication Critical patent/EP1143115B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
    • F01L1/462—Valve return spring arrangements
    • F01L1/465—Pneumatic arrangements
    • 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
    • F01L1/143—Tappets; Push rods for use with overhead camshafts
    • 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
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/10—Connecting springs to valve members

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Fluid-Driven Valves (AREA)

Abstract

Für eine Schließfeder-Vorrichtung für den Ventiltrieb eines Gaswechselventils (2) einer Brennkraftmaschine, bei der eine mechanische Feder (3) ab einer bestimmten Maschinendrehzahl mit einer parallel geschalteten Gasfeder die Schließbewegung des Gaswechselventils bewirkt, wird zur selbstpumpenden Ausgestaltung bei einfachem Aufbau vorgeschlagen, dass ein Gasfeder-Kolben als ein Tassenstößel (6) gestaltet ist mit einem in einem von einer Gasfeder-Kammer (4) gesonderten Raum gleitbeweglich dicht geführten Kolbenhemd als Pumpenkolben einer selbstpumpenden Gasfeder, der aus dem mit einem Medium gesteuert versorgbaren Pumpenraum über einen gesteuert zuschaltbaren Überströmkanal (10) das komprimierte Medium bei im wesentlichen maximalen Öffnungshub des Gaswechselventils zugeführt ist.

Figure 00000001
For a closing spring device for the valve train of a gas exchange valve (2) of an internal combustion engine, in which a mechanical spring (3) causes the closing movement of the gas exchange valve from a certain engine speed with a gas spring connected in parallel, it is proposed for self-pumping design with a simple structure that a The gas spring piston is designed as a cup tappet (6) with a piston skirt which is slidably guided in a space separate from a gas spring chamber (4) as a pump piston of a self-pumping gas spring, which flows from the pump chamber, which can be supplied with a medium, via a controlled switchable overflow channel ( 10) the compressed medium is supplied at a substantially maximum opening stroke of the gas exchange valve.
Figure 00000001
EP01108364A 2000-04-05 2001-04-03 Return spring arrangement for valve operation of an internal combustion engine Expired - Lifetime EP1143115B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10016878 2000-04-05
DE10016878A DE10016878A1 (en) 2000-04-05 2000-04-05 Closing spring device for the valve train of a gas exchange valve of an internal combustion engine

Publications (3)

Publication Number Publication Date
EP1143115A2 EP1143115A2 (en) 2001-10-10
EP1143115A3 true EP1143115A3 (en) 2003-01-02
EP1143115B1 EP1143115B1 (en) 2004-01-28

Family

ID=7637639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01108364A Expired - Lifetime EP1143115B1 (en) 2000-04-05 2001-04-03 Return spring arrangement for valve operation of an internal combustion engine

Country Status (3)

Country Link
EP (1) EP1143115B1 (en)
DE (2) DE10016878A1 (en)
ES (1) ES2213650T3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10207038A1 (en) * 2002-02-20 2003-08-21 Bayerische Motoren Werke Ag Valve operating drive has gas supply to gas cavity downstream of gas inlet aperture through at least one gap between housing and piston
DE10243388B4 (en) * 2002-09-13 2012-02-09 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Pneumatic valve spring for gas exchange valves of internal combustion engines
ITBO20070844A1 (en) * 2007-12-21 2009-06-22 Ferrari Spa PNEUMATIC SYSTEM FOR COMMANDING THE VALVES OF AN INTERNAL COMBUSTION ENGINE
EP2208870B1 (en) 2009-01-20 2013-03-27 BRP-Powertrain GmbH & Co. KG Air spring system for an internal combustion engine
EP2211031B1 (en) 2009-01-22 2013-07-10 BRP-Powertrain GmbH & Co. KG Air spring with cap

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2949413A1 (en) * 1979-12-08 1981-06-11 Volkswagenwerk Ag, 3180 Wolfsburg IC engine valve resetting force changing device - uses pneumatic springs in addition to coiled valve springs with cam actuation
EP0269587A1 (en) * 1986-10-20 1988-06-01 Ab Volvo Valve spring device in internal-combustion engines
DE3808542A1 (en) * 1987-03-26 1988-10-06 Volkswagen Ag Valve gear for an inlet and exhaust valve of an internal combustion engine
EP0396327A1 (en) * 1989-04-26 1990-11-07 Honda Giken Kogyo Kabushiki Kaisha Valve operating system of internal combustion engine
DE4214839A1 (en) * 1992-05-05 1993-11-11 Audi Ag Valve drive for IC engine - involves lift valve operated in opening direction by cam against force of pneumatic spring
EP0787893A1 (en) * 1996-02-01 1997-08-06 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Valve drive comprising pneumatic return spring for an internal combustion engine
EP0824180A1 (en) * 1996-08-13 1998-02-18 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Pneumatic return spring for engine valve

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3484498B2 (en) * 1993-09-30 2004-01-06 ヤマハ発動機株式会社 4 cycle engine
DE59506935D1 (en) * 1994-08-12 1999-11-04 Bayerische Motoren Werke Ag Pneumatic spring, in particular for gas exchange valves of internal combustion engines

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2949413A1 (en) * 1979-12-08 1981-06-11 Volkswagenwerk Ag, 3180 Wolfsburg IC engine valve resetting force changing device - uses pneumatic springs in addition to coiled valve springs with cam actuation
EP0269587A1 (en) * 1986-10-20 1988-06-01 Ab Volvo Valve spring device in internal-combustion engines
DE3808542A1 (en) * 1987-03-26 1988-10-06 Volkswagen Ag Valve gear for an inlet and exhaust valve of an internal combustion engine
EP0396327A1 (en) * 1989-04-26 1990-11-07 Honda Giken Kogyo Kabushiki Kaisha Valve operating system of internal combustion engine
DE4214839A1 (en) * 1992-05-05 1993-11-11 Audi Ag Valve drive for IC engine - involves lift valve operated in opening direction by cam against force of pneumatic spring
EP0787893A1 (en) * 1996-02-01 1997-08-06 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Valve drive comprising pneumatic return spring for an internal combustion engine
EP0824180A1 (en) * 1996-08-13 1998-02-18 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Pneumatic return spring for engine valve

Also Published As

Publication number Publication date
EP1143115A2 (en) 2001-10-10
ES2213650T3 (en) 2004-09-01
DE10016878A1 (en) 2001-10-18
EP1143115B1 (en) 2004-01-28
DE50101377D1 (en) 2004-03-04

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