GB970161A - Improvements in or relating to rocker arms and valve operating mechanisms - Google Patents

Improvements in or relating to rocker arms and valve operating mechanisms

Info

Publication number
GB970161A
GB970161A GB4213660A GB4213660A GB970161A GB 970161 A GB970161 A GB 970161A GB 4213660 A GB4213660 A GB 4213660A GB 4213660 A GB4213660 A GB 4213660A GB 970161 A GB970161 A GB 970161A
Authority
GB
United Kingdom
Prior art keywords
cam
shaft
axial movement
valve
rocker arms
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
Application number
GB4213660A
Inventor
Achilles C Sampietro
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.)
Northrop Grumman Space and Mission Systems Corp
Original Assignee
Thompson Ramo Wooldridge Inc
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 Thompson Ramo Wooldridge Inc filed Critical Thompson Ramo Wooldridge Inc
Priority to GB4213660A priority Critical patent/GB970161A/en
Publication of GB970161A publication Critical patent/GB970161A/en
Expired 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

Abstract

970,161. Cam mechanisms. THOMPSON RAMO WOOLDRIDGE Inc. Dec. 7, 1960, No. 42136/60. Heading F2K. [Also in Division F1] In an overhead valve operating mechanism for an I.C. engine (see Division F1), the rocker arms for the inlet and exhaust valves are both associated with a single cam 32 on an axially adjustable cam-shaft 31. The axial movement of the cam-shaft 31 is controlled by a centrifugal governor 54 in which balls 61, 62 move outwardly along grooves 64, 63, as the engine speed increases, and force a plate 58 and the cam-shaft 31 to the right against the action of a spring 52. The cam 32 has an axially changing profile which may be of such form as to provide an alteration in the valve timing, the valve lift or both upon the axial movement of the cam-shaft 31. The axial movement of the cam-shaft can be controlled by a device responsive to load, or by a hand-operated mechanism, either directly or through a servo device. The valve clearances are adjustable automatically, or manually by means of a nut associated with each rocker arm.
GB4213660A 1960-12-07 1960-12-07 Improvements in or relating to rocker arms and valve operating mechanisms Expired GB970161A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4213660A GB970161A (en) 1960-12-07 1960-12-07 Improvements in or relating to rocker arms and valve operating mechanisms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4213660A GB970161A (en) 1960-12-07 1960-12-07 Improvements in or relating to rocker arms and valve operating mechanisms

Publications (1)

Publication Number Publication Date
GB970161A true GB970161A (en) 1964-09-16

Family

ID=10423017

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4213660A Expired GB970161A (en) 1960-12-07 1960-12-07 Improvements in or relating to rocker arms and valve operating mechanisms

Country Status (1)

Country Link
GB (1) GB970161A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6088010U (en) * 1983-11-25 1985-06-17 スズキ株式会社 Variable valve timing device for 4-stroke engine
GB2190140A (en) * 1986-05-01 1987-11-11 Chris Walters Valve lift mechanism
WO2006014098A1 (en) * 2004-08-06 2006-02-09 Arnis Treijs Gas-distributing mechanical arrangement automatically changing injection and exhaust gas valve timing
WO2014118104A1 (en) * 2013-01-31 2014-08-07 Jaguar Land Rover Limited A device for effecting an axial shift of a rotary shaft for use in a variable camshaft drive mechanism

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6088010U (en) * 1983-11-25 1985-06-17 スズキ株式会社 Variable valve timing device for 4-stroke engine
GB2190140A (en) * 1986-05-01 1987-11-11 Chris Walters Valve lift mechanism
GB2190140B (en) * 1986-05-01 1989-12-06 Chris Walters Valve lift mechanism
WO2006014098A1 (en) * 2004-08-06 2006-02-09 Arnis Treijs Gas-distributing mechanical arrangement automatically changing injection and exhaust gas valve timing
WO2014118104A1 (en) * 2013-01-31 2014-08-07 Jaguar Land Rover Limited A device for effecting an axial shift of a rotary shaft for use in a variable camshaft drive mechanism
US9476328B2 (en) 2013-01-31 2016-10-25 Jaguar Land Rover Limited Device for effecting an axial shift of a rotary shaft for use in a variable camshaft drive mechanism

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