EP0276372A1 - Arbre à cames dans un moteur à combustion interne - Google Patents

Arbre à cames dans un moteur à combustion interne Download PDF

Info

Publication number
EP0276372A1
EP0276372A1 EP87115410A EP87115410A EP0276372A1 EP 0276372 A1 EP0276372 A1 EP 0276372A1 EP 87115410 A EP87115410 A EP 87115410A EP 87115410 A EP87115410 A EP 87115410A EP 0276372 A1 EP0276372 A1 EP 0276372A1
Authority
EP
European Patent Office
Prior art keywords
camshaft
housing
cylinder head
holder
bearing housing
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
EP87115410A
Other languages
German (de)
English (en)
Other versions
EP0276372B1 (fr
Inventor
Gerhard Koller
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.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche 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 Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of EP0276372A1 publication Critical patent/EP0276372A1/fr
Application granted granted Critical
Publication of EP0276372B1 publication Critical patent/EP0276372B1/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
    • 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
    • F01L1/053—Camshafts overhead type
    • F01L1/0532—Camshafts overhead type the cams being directly in contact with the driven valve
    • 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

Definitions

  • the invention relates to a camshaft for an internal combustion engine, which is used to actuate valves and is arranged in bearings of housings of the internal combustion engine formed by a cylinder head and a camshaft bearing housing.
  • a known camshaft (FR-PS 1 511 082) is arranged in bearings which are represented by housings of an internal combustion engine which are assembled in one plane and are designed as a cylinder head and camshaft bearing housing.
  • the camshaft bearing housing which has the shape of a hood, is held on the cylinder head by means of screws. If the camshaft bearing housing is released, several tappets of valves under spring force move the camshaft into a position outside the design position.
  • the object of the invention is to take such precautions on a camshaft that their assembly in bearings which are formed by a camshaft bearing housing and a cylinder head is simple.
  • the holder holds the camshaft in a housing - cylinder head or camshaft bearing housing - in a preassembled position, which makes it easier to connect the housings forming the camshaft bearings because the camshaft is already in one of the design positions similar position. It is also ensured by the holder that when a housing, for example the camshaft bearing housing, is released, the camshaft remains in a position which is easier to handle.
  • the brackets can be used to pre-adjust the two housings - cylinder head and camshaft bearing housing - relative to one another.
  • the holders are simple components and can be attached to one of the two housings without much effort
  • a camshaft 1 for actuating valves, not shown, held under spring tension, is arranged in bearings 2, 3, 4, which are formed by the housing of an internal combustion engine.
  • the housings are a cylinder head 5 and a hood-shaped camshaft bearing housing 6, which are assembled in a parting plane AA running perpendicular to the cylinder axis (not shown), each bearing comprising 2 bearing halves 7, 8, which fit into the cylinder head 5 or the camshaft bearing housing 6 are integrated.
  • the camshaft housing 6 is held on the cylinder head 5 by means of several screws 9.
  • the camshaft 1 cooperates with a holder 10 in such a way that it forms a preassembled structural unit with the cylinder head 5.
  • the holder 10 has a ring-like support section 11 which surrounds a part of the shaft region 12 of the camshaft 1 at a short distance, ie the radius R1 of the support section 11 is larger than the radius R2 of the camshaft 1.
  • the holder 10 is with a mounting flange 13th provided, which extends laterally from the camshaft 1 - parallel to the plane AA - and is held on the cylinder head 5 by means of a screw 14.
  • two holders 10 are provided over the length of the camshaft 1, which are identical in construction.
  • camshaft housing 6 If the camshaft housing 6 is detached from the cylinder head 5, the camshaft 1 assumes position B due to the valves held under spring tension; it remains in an easy-to-use basic position.
  • the holder 16 surrounds the shaft region 12 of the camshaft 1 with a half-shell-shaped support section 17, it being provided with fastening flanges 18, 19 which extend on both sides of the camshaft 1 - parallel to the plane A-A.
  • the mounting flanges 18, 19 are held on the camshaft bearing housing 6 with screws 20, 21.
  • the camshaft 1 forms a preassembled unit with the camshaft housing 1 through the holder 16, the camshaft 1 having the position C.
  • camshaft 1 can also cooperate with a holder 22, which is represented by a straight cylindrical pin 23.
  • the pin 23 extends obliquely to the plane A-A and projects beyond the camshaft 1, wherein it is fixed in a bore 24 in the cylinder head 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP87115410A 1986-12-20 1987-10-21 Arbre à cames dans un moteur à combustion interne Expired - Lifetime EP0276372B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3643673 1986-12-20
DE19863643673 DE3643673A1 (de) 1986-12-20 1986-12-20 Nockenwelle fuer eine brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP0276372A1 true EP0276372A1 (fr) 1988-08-03
EP0276372B1 EP0276372B1 (fr) 1990-09-26

Family

ID=6316712

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87115410A Expired - Lifetime EP0276372B1 (fr) 1986-12-20 1987-10-21 Arbre à cames dans un moteur à combustion interne

Country Status (5)

Country Link
US (1) US4821693A (fr)
EP (1) EP0276372B1 (fr)
JP (1) JP2654041B2 (fr)
DE (2) DE3643673A1 (fr)
ES (1) ES2018527B3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5119776A (en) * 1991-09-30 1992-06-09 Chrysler Corporation Compact bearing cap for overhead camshaft
FR2915512B1 (fr) * 2007-04-30 2011-08-19 Timken Co Ensemble d'arbre et d'un support et procede de montage correspondant
DE102008007091B4 (de) 2008-01-31 2010-06-24 Polytec Automotive Gmbh & Co. Kg Nockenwellenmodul
DE102009009664A1 (de) 2009-02-19 2010-08-26 Mahle International Gmbh Nockenwelle
DE102013113824A1 (de) * 2013-12-11 2015-06-11 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verfahren zum Montieren einer Nockenwelle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB558779A (en) * 1943-05-19 1944-01-20 Harold Raymond Morgan Improvements in combustion chambers and overhead valve gear in internal combustion engines
FR1217835A (fr) * 1958-12-10 1960-05-05 Simca Automobiles Sa Perfectionnements apportés aux moteurs à arbre à cames en tête
FR1511082A (fr) * 1966-12-15 1968-01-26 Peugeot Nouvel agencement de l'arbre à cames sur un moteur thermique ou compresseur et machine en résultant

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1840314A (en) * 1929-10-22 1932-01-12 Gerard Paul Valve actuating mechanism for internal combustion engines
JPS5325711A (en) * 1976-08-20 1978-03-09 Toyota Motor Corp Cam shaft bearing structure for engine
DE3217203A1 (de) * 1981-05-15 1982-12-02 Honda Giken Kogyo K.K., Tokyo Variable ventilsteuerung
SU1044801A1 (ru) * 1981-11-26 1983-09-30 Pisotskij Polikarp Z Газораспределительный механизм
JPS5967509U (ja) * 1982-10-27 1984-05-08 本田技研工業株式会社 内燃エンジンにおけるカム軸の軸受装置
JPS5999149U (ja) * 1982-12-23 1984-07-04 トヨタ自動車株式会社 内燃機関のシリンダヘツド
DE8503825U1 (de) * 1985-02-12 1986-06-05 Johnson, Edward, West Harford Zylinderkopf für Verbrennungsmotoren

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB558779A (en) * 1943-05-19 1944-01-20 Harold Raymond Morgan Improvements in combustion chambers and overhead valve gear in internal combustion engines
FR1217835A (fr) * 1958-12-10 1960-05-05 Simca Automobiles Sa Perfectionnements apportés aux moteurs à arbre à cames en tête
FR1511082A (fr) * 1966-12-15 1968-01-26 Peugeot Nouvel agencement de l'arbre à cames sur un moteur thermique ou compresseur et machine en résultant

Also Published As

Publication number Publication date
DE3643673C2 (fr) 1990-04-19
US4821693A (en) 1989-04-18
EP0276372B1 (fr) 1990-09-26
ES2018527B3 (es) 1991-04-16
JPS63162909A (ja) 1988-07-06
JP2654041B2 (ja) 1997-09-17
DE3643673A1 (de) 1988-06-30
DE3765245D1 (de) 1990-10-31

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