EP1245797A3 - Desmodromic valve drive - Google Patents

Desmodromic valve drive Download PDF

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Publication number
EP1245797A3
EP1245797A3 EP02006133A EP02006133A EP1245797A3 EP 1245797 A3 EP1245797 A3 EP 1245797A3 EP 02006133 A EP02006133 A EP 02006133A EP 02006133 A EP02006133 A EP 02006133A EP 1245797 A3 EP1245797 A3 EP 1245797A3
Authority
EP
European Patent Office
Prior art keywords
cam
valve drive
area
desmodromic valve
enclosing
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Withdrawn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
EP02006133A
Other languages
German (de)
French (fr)
Other versions
EP1245797A2 (en
Inventor
Stefan Battlogg
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1245797A2 publication Critical patent/EP1245797A2/en
Publication of EP1245797A3 publication Critical patent/EP1245797A3/en
Withdrawn legal-status Critical Current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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/08—Shape of cams
    • 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
    • F01L1/30—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of positively opened and closed valves, i.e. desmodromic valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

Ein Ventiltrieb für Brennkraftmaschinen weist mindestens ein angetriebenes Nockenelement (2) und ein vom Nockenelement (2) verschieb- oder verschwenkbares Nockenfolgeelement (10) aufweist. Das Nockenelement (2) ist drehbar in einem flexiblen Umschließungselement (4) angeordne, das mit dem Nockenfolgeelement (10) beweglich verbunden ist. Zwischen dem Grundkreisbereich (71) und dem Nockenbereich (72) des Nockenelementes (2) ist ein konkaver Übergangsbereich (73) vorgesehen, in den das Umschließungselement (4) durch eine der Ventilöffnung entgegenwirkende Kraft eindrückbar ist.

Figure 00000001
Figure 00000002
A valve train for internal combustion engines has at least one driven cam element (2) and a cam follower element (10) which can be displaced or pivoted by the cam element (2). The cam element (2) is rotatably arranged in a flexible enclosing element (4) which is movably connected to the cam follower element (10). A concave transition area (73) is provided between the base circle area (71) and the cam area (72) of the cam element (2), into which the enclosing element (4) can be pressed by a force counteracting the valve opening.
Figure 00000001
Figure 00000002
EP02006133A 2001-03-26 2002-03-19 Desmodromic valve drive Withdrawn EP1245797A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT4792001 2001-03-26
AT4792001 2001-03-26

Publications (2)

Publication Number Publication Date
EP1245797A2 EP1245797A2 (en) 2002-10-02
EP1245797A3 true EP1245797A3 (en) 2003-01-08

Family

ID=3674904

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02006133A Withdrawn EP1245797A3 (en) 2001-03-26 2002-03-19 Desmodromic valve drive

Country Status (1)

Country Link
EP (1) EP1245797A3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10306428A1 (en) * 2003-02-15 2004-08-26 Contitech Antriebssysteme Gmbh Automotive operating system regulates valve operation and slip timing belt tension for valve system without valve springs
DE102004026430B3 (en) * 2004-05-29 2005-09-01 Dr.Ing.H.C. F. Porsche Ag Valve drive for an internal combustion engine comprises a rotating cam with a peripheral surface having an elevation and/or recess in a basic circular section and/or in an eccentric section
DE102005038504B3 (en) * 2005-08-13 2006-11-30 Dr.Ing.H.C. F. Porsche Ag Forcibly controlled drive for valve has contact elements coupled to valve shaft to enable it to take load when valve device is opened

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2184783A (en) * 1985-12-14 1987-07-01 Stidworthy Frederick M Poppet valve gear
DE3700715A1 (en) * 1986-01-22 1987-07-23 Volkswagen Ag Positive control for a valve
WO2001012958A1 (en) * 1999-08-12 2001-02-22 Stefan Battlogg A valve drive in particular for combustion engines of motor vehicles
EP1205643A1 (en) * 2000-11-13 2002-05-15 Stefan Battlogg Valve drive in an internal combustion engine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2184783A (en) * 1985-12-14 1987-07-01 Stidworthy Frederick M Poppet valve gear
DE3700715A1 (en) * 1986-01-22 1987-07-23 Volkswagen Ag Positive control for a valve
WO2001012958A1 (en) * 1999-08-12 2001-02-22 Stefan Battlogg A valve drive in particular for combustion engines of motor vehicles
EP1205643A1 (en) * 2000-11-13 2002-05-15 Stefan Battlogg Valve drive in an internal combustion engine

Also Published As

Publication number Publication date
EP1245797A2 (en) 2002-10-02

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