FR2270443A1 - Distribution mechanism for I.C. engine - has camshaft bearing acting as oil pump piston and return spring on camshaft - Google Patents

Distribution mechanism for I.C. engine - has camshaft bearing acting as oil pump piston and return spring on camshaft

Info

Publication number
FR2270443A1
FR2270443A1 FR7408458A FR7408458A FR2270443A1 FR 2270443 A1 FR2270443 A1 FR 2270443A1 FR 7408458 A FR7408458 A FR 7408458A FR 7408458 A FR7408458 A FR 7408458A FR 2270443 A1 FR2270443 A1 FR 2270443A1
Authority
FR
France
Prior art keywords
camshaft
return spring
oil pump
engine
bearing
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
FR7408458A
Other languages
French (fr)
Other versions
FR2270443B1 (en
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.)
PEUGEOT and RENAULT
Original Assignee
PEUGEOT and RENAULT
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 PEUGEOT and RENAULT filed Critical PEUGEOT and RENAULT
Priority to FR7408458A priority Critical patent/FR2270443A1/en
Publication of FR2270443A1 publication Critical patent/FR2270443A1/en
Application granted granted Critical
Publication of FR2270443B1 publication Critical patent/FR2270443B1/fr
Granted 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
    • F01L13/0042—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction with cams being profiled in axial and radial direction

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

The camshaft (1) is provided with cams (18 and 19) with profiles which vary along the axial length of the cam. The camshaft (1) has an enlarged diameter (2) which serves as a journal in the bearing (3) and which acts as a piston in the bearing. The outer end of the bearing (3) is sealed by the boss (10) of the driving sprocket (9) which is mounted on the plain diameter (5) and on the splines (12) of the camshaft. Lubricating oil from the engine oil pump flows through the orifice (31) and out through the drain hole (33). When the solenoid (34) is de-energised, the slider (35) seals off the oil drain allowing the oil pressure to rise in the space (32) which pushes the camshaft (1) to the left. A return spring (17) about the camshaft is fixed between the sprocket and a ring (16) on the camshaft.
FR7408458A 1974-03-13 1974-03-13 Distribution mechanism for I.C. engine - has camshaft bearing acting as oil pump piston and return spring on camshaft Granted FR2270443A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7408458A FR2270443A1 (en) 1974-03-13 1974-03-13 Distribution mechanism for I.C. engine - has camshaft bearing acting as oil pump piston and return spring on camshaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7408458A FR2270443A1 (en) 1974-03-13 1974-03-13 Distribution mechanism for I.C. engine - has camshaft bearing acting as oil pump piston and return spring on camshaft

Publications (2)

Publication Number Publication Date
FR2270443A1 true FR2270443A1 (en) 1975-12-05
FR2270443B1 FR2270443B1 (en) 1976-10-08

Family

ID=9136230

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7408458A Granted FR2270443A1 (en) 1974-03-13 1974-03-13 Distribution mechanism for I.C. engine - has camshaft bearing acting as oil pump piston and return spring on camshaft

Country Status (1)

Country Link
FR (1) FR2270443A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2485622A1 (en) * 1980-06-27 1981-12-31 Boisson Edouard Four stroke IC engine valve gear - uses cam with differentially shaped contact face, shifted according to engine speed
US4316437A (en) * 1976-12-29 1982-02-23 Automobiles Peugeot Acceleration controlling device for an automobile vehicle
EP0116306A1 (en) * 1983-02-04 1984-08-22 FIAT AUTO S.p.A. Device for regulating the axial position of a variable-profile camshaft, in particular for controlling the timing system on an engine
WO1987006647A1 (en) * 1986-05-01 1987-11-05 Chris Walters (Engineering Consultant) Limited Valve-control mechanism
US4753198A (en) * 1986-02-04 1988-06-28 Heath Kenneth E Compression ratio control mechanism for internal combustion engines

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4316437A (en) * 1976-12-29 1982-02-23 Automobiles Peugeot Acceleration controlling device for an automobile vehicle
FR2485622A1 (en) * 1980-06-27 1981-12-31 Boisson Edouard Four stroke IC engine valve gear - uses cam with differentially shaped contact face, shifted according to engine speed
EP0116306A1 (en) * 1983-02-04 1984-08-22 FIAT AUTO S.p.A. Device for regulating the axial position of a variable-profile camshaft, in particular for controlling the timing system on an engine
US4753198A (en) * 1986-02-04 1988-06-28 Heath Kenneth E Compression ratio control mechanism for internal combustion engines
WO1987006647A1 (en) * 1986-05-01 1987-11-05 Chris Walters (Engineering Consultant) Limited Valve-control mechanism

Also Published As

Publication number Publication date
FR2270443B1 (en) 1976-10-08

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