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FR2357731A1 - Variable lift valve mechanism in IC engine - reduces lift of inlet valve in accordance with increase in suction pressure - Google Patents

Variable lift valve mechanism in IC engine - reduces lift of inlet valve in accordance with increase in suction pressure

Info

Publication number
FR2357731A1
FR2357731A1 FR7620927A FR7620927A FR2357731A1 FR 2357731 A1 FR2357731 A1 FR 2357731A1 FR 7620927 A FR7620927 A FR 7620927A FR 7620927 A FR7620927 A FR 7620927A FR 2357731 A1 FR2357731 A1 FR 2357731A1
Authority
FR
France
Prior art keywords
lift
rocker arm
engine
accordance
increase
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
FR7620927A
Other languages
French (fr)
Other versions
FR2357731B1 (en
Inventor
Georges Chariatte
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.)
Chrysler France SAS
Original Assignee
Chrysler France SAS
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 Chrysler France SAS filed Critical Chrysler France SAS
Priority to FR7620927A priority Critical patent/FR2357731A1/en
Publication of FR2357731A1 publication Critical patent/FR2357731A1/en
Application granted granted Critical
Publication of FR2357731B1 publication Critical patent/FR2357731B1/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
    • F01L13/0021—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 by modification of rocker arm ratio
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

The inlet valve (12) is operated by a rocker arm (14) against the action of the closing spring (13). The rocker arm is moved by a push rod (20) which is lifted by a cam (16). An adjusting lever (22) has an end (23) between the push rod and the rocker arm. This end is spherical. The other end is pinned (28) to an eccentric (29) on the end of an operating lever (32) whose other end is connected to the piston (34) of a membrane actuator (35). The actuator is subjected to the manifold suction presure so that when the pressure increases the operating lever (32) moves the adjusting lever (22) so that the point of contact (P) on the rocker arm moves to reduce the valve opening lift.
FR7620927A 1976-07-08 1976-07-08 Variable lift valve mechanism in IC engine - reduces lift of inlet valve in accordance with increase in suction pressure Granted FR2357731A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7620927A FR2357731A1 (en) 1976-07-08 1976-07-08 Variable lift valve mechanism in IC engine - reduces lift of inlet valve in accordance with increase in suction pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7620927A FR2357731A1 (en) 1976-07-08 1976-07-08 Variable lift valve mechanism in IC engine - reduces lift of inlet valve in accordance with increase in suction pressure

Publications (2)

Publication Number Publication Date
FR2357731A1 true FR2357731A1 (en) 1978-02-03
FR2357731B1 FR2357731B1 (en) 1980-09-19

Family

ID=9175428

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7620927A Granted FR2357731A1 (en) 1976-07-08 1976-07-08 Variable lift valve mechanism in IC engine - reduces lift of inlet valve in accordance with increase in suction pressure

Country Status (1)

Country Link
FR (1) FR2357731A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2453979A1 (en) * 1979-04-13 1980-11-07 Nissan Motor VALVE CONTROL MECHANISM FOR INTERNAL COMBUSTION ENGINES
EP0111768A1 (en) * 1982-12-23 1984-06-27 FIAT AUTO S.p.A. A mechanical device for controlling a valve of a heat engine
EP0717174A1 (en) * 1994-12-12 1996-06-19 Isuzu Motors Limited Valve operating system for internal combustion engine
DE10066054B4 (en) * 2000-07-18 2006-07-13 Thyssenkrupp Automotive Ag Hub valve control for engines
DE102017119348A1 (en) * 2017-08-24 2019-02-28 Man Truck & Bus Ag Variable valve train

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2453979A1 (en) * 1979-04-13 1980-11-07 Nissan Motor VALVE CONTROL MECHANISM FOR INTERNAL COMBUSTION ENGINES
EP0111768A1 (en) * 1982-12-23 1984-06-27 FIAT AUTO S.p.A. A mechanical device for controlling a valve of a heat engine
EP0717174A1 (en) * 1994-12-12 1996-06-19 Isuzu Motors Limited Valve operating system for internal combustion engine
DE10066054B4 (en) * 2000-07-18 2006-07-13 Thyssenkrupp Automotive Ag Hub valve control for engines
DE102017119348A1 (en) * 2017-08-24 2019-02-28 Man Truck & Bus Ag Variable valve train
US10619527B2 (en) 2017-08-24 2020-04-14 Man Truck & Bus Ag Variable valve train

Also Published As

Publication number Publication date
FR2357731B1 (en) 1980-09-19

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Legal Events

Date Code Title Description
CD Change of name or company name
TP Transmission of property
ST Notification of lapse