EP0829620A3 - Adjustable camshaft for a piston machine controlled by valves, in particular for an internal combustion engine - Google Patents

Adjustable camshaft for a piston machine controlled by valves, in particular for an internal combustion engine Download PDF

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Publication number
EP0829620A3
EP0829620A3 EP97114533A EP97114533A EP0829620A3 EP 0829620 A3 EP0829620 A3 EP 0829620A3 EP 97114533 A EP97114533 A EP 97114533A EP 97114533 A EP97114533 A EP 97114533A EP 0829620 A3 EP0829620 A3 EP 0829620A3
Authority
EP
European Patent Office
Prior art keywords
internal combustion
combustion engine
camshaft
valves
piston machine
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
EP97114533A
Other languages
German (de)
French (fr)
Other versions
EP0829620A2 (en
EP0829620B1 (en
Inventor
Adolf Fischer
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 EP0829620A2 publication Critical patent/EP0829620A2/en
Publication of EP0829620A3 publication Critical patent/EP0829620A3/en
Application granted granted Critical
Publication of EP0829620B1 publication Critical patent/EP0829620B1/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
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/34413—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using composite camshafts, e.g. with cams being able to move relative to the camshaft

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

Für eine Verstell-Nockenwelle für eine ventilgesteuerte Hubkolbenmaschine, insbesondere Brennkraftmaschine mit auf der Nockenwelle (1) relativ zueinander winkelverstellbar gelagert angeordneten und zwischen maschinenseitigen Lageranordnungen (5) axial positionierten Nocken (3,3',4) wird zur Vermeidung einer stirnseitigen Anlage der Nocken (3,3',4) an den jeweiligen Lageranordnungen (5) vorgeschlagen, daß benachbarte Nocken (3,3',4) zwischen Stirnseiten von auf der Nockenwelle (1) gesondert vorgesehener und in Ausnehmungen geteilter Lageranordnungen (5) axial überstehend angeordneter Lagerbuchsen (8) axial positioniert sind.

Figure 00000001
For an adjustable camshaft for a valve-controlled reciprocating piston engine, in particular an internal combustion engine, with cams (3, 3 ', 4) which are arranged on the camshaft (1) in an angle-adjustable manner relative to one another and are axially positioned between machine-side bearing arrangements (5), the cams are avoided in order to prevent them from contacting at the end (3,3 ', 4) on the respective bearing arrangements (5) suggests that adjacent cams (3,3', 4) be arranged axially projecting between end faces of bearing arrangements (5) separately provided on the camshaft (1) and divided into recesses Bearing bushes (8) are positioned axially.
Figure 00000001
EP97114533A 1996-09-13 1997-08-22 Adjustable camshaft for a piston machine controlled by valves, in particular for an internal combustion engine Expired - Lifetime EP0829620B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19637416A DE19637416A1 (en) 1996-09-13 1996-09-13 Adjustable camshaft for a valve-controlled reciprocating machine, in particular an internal combustion engine
DE19637416 1996-09-13

Publications (3)

Publication Number Publication Date
EP0829620A2 EP0829620A2 (en) 1998-03-18
EP0829620A3 true EP0829620A3 (en) 1998-04-08
EP0829620B1 EP0829620B1 (en) 2000-07-12

Family

ID=7805591

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97114533A Expired - Lifetime EP0829620B1 (en) 1996-09-13 1997-08-22 Adjustable camshaft for a piston machine controlled by valves, in particular for an internal combustion engine

Country Status (3)

Country Link
EP (1) EP0829620B1 (en)
DE (2) DE19637416A1 (en)
ES (1) ES2148883T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19646934A1 (en) 1996-11-13 1998-05-14 Bayerische Motoren Werke Ag Adjustable camshaft, especially for valve-controlled internal combustion engines
DE19823316A1 (en) * 1998-05-26 1999-12-02 Volkswagen Ag Flanged bushing and process for its manufacture
DE10002512A1 (en) 2000-01-21 2001-07-26 Porsche Ag Cylinder head for a valve-controlled internal combustion engine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59183009A (en) * 1983-03-31 1984-10-18 Suzuki Motor Co Ltd Valve timing variable device for 4-cycle engine
FR2644543A1 (en) * 1989-03-17 1990-09-21 Renault
DE4416505A1 (en) * 1994-05-10 1995-11-16 Bayerische Motoren Werke Ag Cam shaft with turnable cams

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4226798A1 (en) * 1992-08-13 1994-02-24 Bayerische Motoren Werke Ag Stroke-piston IC engine with two gas exchange valves per cylinder
DE4331977A1 (en) * 1993-09-21 1995-03-23 Porsche Ag Variable valve timing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59183009A (en) * 1983-03-31 1984-10-18 Suzuki Motor Co Ltd Valve timing variable device for 4-cycle engine
FR2644543A1 (en) * 1989-03-17 1990-09-21 Renault
DE4416505A1 (en) * 1994-05-10 1995-11-16 Bayerische Motoren Werke Ag Cam shaft with turnable cams

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 042 (M - 359) 22 February 1985 (1985-02-22) *

Also Published As

Publication number Publication date
ES2148883T3 (en) 2000-10-16
EP0829620A2 (en) 1998-03-18
DE59702000D1 (en) 2000-08-17
EP0829620B1 (en) 2000-07-12
DE19637416A1 (en) 1998-03-19

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