EP0263734B1 - Kipphebelnanordnung auf einem Zylinderkopf einer Brennkraftmaschine - Google Patents

Kipphebelnanordnung auf einem Zylinderkopf einer Brennkraftmaschine Download PDF

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Publication number
EP0263734B1
EP0263734B1 EP19870402055 EP87402055A EP0263734B1 EP 0263734 B1 EP0263734 B1 EP 0263734B1 EP 19870402055 EP19870402055 EP 19870402055 EP 87402055 A EP87402055 A EP 87402055A EP 0263734 B1 EP0263734 B1 EP 0263734B1
Authority
EP
European Patent Office
Prior art keywords
camshaft
cylinder head
rocker arm
bearing cap
rocker
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.)
Expired - Lifetime
Application number
EP19870402055
Other languages
English (en)
French (fr)
Other versions
EP0263734A1 (de
Inventor
Roger Bocquet
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.)
Automobiles Peugeot SA
Automobiles Citroen SA
Original Assignee
Automobiles Peugeot SA
Automobiles Citroen SA
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 Automobiles Peugeot SA, Automobiles Citroen SA filed Critical Automobiles Peugeot SA
Publication of EP0263734A1 publication Critical patent/EP0263734A1/de
Application granted granted Critical
Publication of EP0263734B1 publication Critical patent/EP0263734B1/de
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
    • 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
    • F01L1/18—Rocking arms or levers
    • F01L1/181—Centre pivot rocking arms

Definitions

  • the invention relates to rocker arm ramps for an internal combustion engine and, more particularly, their arrangement on a cylinder head.
  • a rocker arm ramp comprises an axis carried by at least one support integral with the cylinder head of the engine, this support being either attached and fixed to the cylinder head or made integrally with the latter. Caps can be used to secure the axle to its supports, just as bearing caps are provided to partially delimit the bearings which rotationally support a camshaft, these caps being fixed to the cylinder head by screws or the like.
  • the rocker arms are mounted to oscillate on the axis and are held and guided laterally along this axis by members having guide surfaces perpendicular to said axis. In the prior art, these members may be constituted by the support caps of the rocker arm ramp or by spacers threaded on the axis and if necessary urged by springs. Such an arrangement requires a relatively large number of parts and results in complex assembly and disassembly operations.
  • Document EP-A 0 091 096 describes an arrangement of a rocker arm ramp on an internal combustion engine cylinder head, this cylinder head comprising bearings for a camshaft delimited in part by the cylinder head and in part by at least one cap camshaft bearing fixed on the cylinder head, and supports for the rocker arm ramp, the latter comprising an axis fixed on said supports and rocker arms mounted oscillating around said axis and cooperating with the cams of the camshaft, and rocker guide means, defining guide surfaces perpendicular to said axis, at least one camshaft bearing cap comprising at least one lateral extension delimiting said guide surface.
  • the object of the invention is to provide an arrangement of a rocker arm ramp on an internal combustion engine cylinder head in which the positioning and lateral guidance of the rocker arms on the rocker arm axis is precise and in which the assembly and disassembly operations be facilitated.
  • the subject of the invention is an arrangement of a rocker arm ramp on an internal combustion engine cylinder head, this cylinder head comprising bearings for a camshaft, delimited in part by the cylinder head and in part by at least one camshaft bearing cap fixed on the cylinder head, and supports for the rocker arm ramp, the latter having an axis fixed on said supports, rocker arms mounted oscillating around said axis and cooperating with the cams of the camshaft , and rocker guide means, delimiting guide surfaces perpendicular to said axis, at least one camshaft bearing cap comprising at least one lateral extension delimiting said guide surface, characterized in that said supports for the ramp of rocker arms do not include said camshaft bearing cap and in that the rocker shaft is fixed on at least one support formed in the cylinder head.
  • a rocker rail according to a preferred embodiment of the invention is illustrated in Figs. 1 and 2.
  • a rocker shaft 1 is arranged in a conventional manner parallel to a camshaft 2.
  • Rockers 3 are mounted in an oscillating manner on the axis 1 which is fixed in supports 4a of a cylinder head 4, directly by screws 5 diametrically crossing the axis of rocker arms to be screwed into tapped holes in the cylinder head. In line with these screws, the axis has flats 1 a.
  • the camshaft is rotatably supported in bearings 6, the upper parts of which consist of bearing caps 7 fixed to the cylinder head 4 by screws 8.
  • the bearing caps 7 have, according to the invention, extensions 9 ensuring the positioning and lateral guiding of the rocker arms. These extensions are precisely machined to provide bearing surfaces 10 which cooperate with bearing surfaces 11 formed on the rocker arms in order to determine their lateral position.
  • the caps 7, 7 ′ may include one or more lateral extensions 9 or 9 ′.
  • two rocker arms are arranged to form an assembly trapped between two guide elements, a spring 12 being arranged between their opposite faces, to separate them from one another and apply them against the adjacent guide surfaces.

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

Claims (4)

1. Kipphebelanordnung auf einem Zylinderkopf einer Brennkraftmaschine mit Innenverbrennung, wobei der Zylinderkopf (4) Wellenlager (6) für eine Nockenwelle (2) aufweist, die teilweise vom Zylinderkopf (4) und teilweise von wenigstens einem Lagerkopf (7) der auf dem Zylinderkopf befestigten Nockenwelle (2) begrenzt sind, wobei ferner Stützen (4a) für die Kipphebelrampe vorgesehen sind, die eine Welle (1) aufweist, die an den Stützen befestigt ist und die Kipphebel (3) um die Welle schwingen und mit den Nocken der Nockenwelle (2) zusammenarbeiten, und wobei Führungsmittel (9) der Kipphebel (3) Führungsflächen (10) senkrecht zur Welle begrenzen und wenigstens ein Lagerkopf (7) der Nockenwelle (2) wenigstens eine seitliche Verlängerung (9) aufweist, die die Führungsfläche (10) begrenzt, dadurch gekennzeichnet, daß die Stützen (4a) für die Kipphebelrampe den Lagerkopf (7) der Nockenwelle (2) nicht einschließen und daß die Kipphebelwelle (1) an wenigstens einer Stütze (4a) im Zylinderkopf befestigt ist.
2. Kipphebelanordnung nach Anspruch 1, dadurch gekennzeichnet, daß die Kipphebelwelle (1) direkt mit Schrauben (5) auf der Stütze (4a) befestigt ist, die die Stütze diametral durchqueren.
3. Kipphebelanordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß ein Zwischen-Lagerkopf (7) der Nockenwelle (2) zwei seitliche Verlängerungen (9) aufweist, die jeweils eine Führungsfläche (10) begrenzen.
4. Kipphebelanodnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die den Enden der Nockenwelle (2) benachbart angeordneten Lagerköpfe (7) jeweils eine einzige Verlängerung (9') aufweisen, die eine Führungsfläche (10') begrenzen.
EP19870402055 1986-10-01 1987-09-15 Kipphebelnanordnung auf einem Zylinderkopf einer Brennkraftmaschine Expired - Lifetime EP0263734B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8613702 1986-10-01
FR8613702A FR2605047B1 (fr) 1986-10-01 1986-10-01 Agencement d'une rampe de culbuteurs sur une culasse de moteur a combustion interne.

Publications (2)

Publication Number Publication Date
EP0263734A1 EP0263734A1 (de) 1988-04-13
EP0263734B1 true EP0263734B1 (de) 1990-04-25

Family

ID=9339451

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870402055 Expired - Lifetime EP0263734B1 (de) 1986-10-01 1987-09-15 Kipphebelnanordnung auf einem Zylinderkopf einer Brennkraftmaschine

Country Status (3)

Country Link
EP (1) EP0263734B1 (de)
DE (1) DE3762443D1 (de)
FR (1) FR2605047B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104806315A (zh) * 2015-03-27 2015-07-29 中国北方发动机研究所(天津) 一种新型进气摇臂轴定位机构

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2741691B2 (ja) * 1989-04-28 1998-04-22 スズキ株式会社 内燃機関の動弁機構
USRE35382E (en) * 1989-07-14 1996-11-26 Yamaha Hatsudoki Kabushiki Kaisha Lubrication arrangement for engine
DE4227566A1 (de) * 1992-08-20 1994-03-03 Daimler Benz Ag Zylinderkopfseitiges Nockenwellenlager für eine mehrzylindrige Brennkraftmaschine
IT1267984B1 (it) * 1994-01-18 1997-02-20 Iveco Fiat Gruppo di montaggio di un asse bilancieri su una testa cilindri di un motore endotermico.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE339855C (de) * 1919-06-11 1921-08-15 Daimler Motoren Schwinghebelsteuerung fuer zwei oder mehr Ventile von Verbrennungskraftmaschinen
GB170436A (en) * 1920-08-10 1921-10-27 Bentley Motors Ltd Improvements in valve operating mechanism for internal combustion engines
JPS6021445Y2 (ja) * 1980-02-14 1985-06-26 日産自動車株式会社 ロツカ−ア−ム取付構造
JPS58172409A (ja) * 1982-04-02 1983-10-11 Nissan Motor Co Ltd 内燃機関の動弁装置
JPS5958109A (ja) * 1982-09-27 1984-04-03 Honda Motor Co Ltd 動弁系の潤滑油供給構造

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104806315A (zh) * 2015-03-27 2015-07-29 中国北方发动机研究所(天津) 一种新型进气摇臂轴定位机构

Also Published As

Publication number Publication date
DE3762443D1 (de) 1990-05-31
FR2605047B1 (fr) 1989-01-27
FR2605047A1 (fr) 1988-04-15
EP0263734A1 (de) 1988-04-13

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