GB736582A - Improvements in or relating to cams for actuating the valves of internal combustion engines - Google Patents

Improvements in or relating to cams for actuating the valves of internal combustion engines

Info

Publication number
GB736582A
GB736582A GB239151A GB239151A GB736582A GB 736582 A GB736582 A GB 736582A GB 239151 A GB239151 A GB 239151A GB 239151 A GB239151 A GB 239151A GB 736582 A GB736582 A GB 736582A
Authority
GB
United Kingdom
Prior art keywords
lift
cam
actuating
valve
lift curve
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
GB239151A
Inventor
James Douglas Thorn
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.)
Ruston and Hornsby Ltd
Original Assignee
Ruston and Hornsby Ltd
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 Ruston and Hornsby Ltd filed Critical Ruston and Hornsby Ltd
Priority to GB239151A priority Critical patent/GB736582A/en
Publication of GB736582A publication Critical patent/GB736582A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H53/00—Cams ; Non-rotary cams; or cam-followers, e.g. rollers for gearing mechanisms
    • F16H53/02—Single-track cams for single-revolution cycles; Camshafts with such cams

Landscapes

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

Abstract

736,582. Valve gear. RUSTON & HORNSBY, Ltd. Jan. 31,1952 [Jan. 31, 1951], No. 2391/51. Class 7(6). A valve-actuating cam is designed to produce a lift curve built up of two sine or cosine waves of which the ratio of the amplitude of the wave of longer wavelength to that of the wave of shorter wavelength is less than 3 to 1, for example 2À25 to 1, and which are superimposed so that the point of maximum valve lift is a point at which the waves are in opposite phase at maximum amplitude. The lift curve is represented generally by the equation E= A cos BF + C cos DF where 3C>A and D>B, F representing cam angle to a convenient scale. The lift curve shown in Fig. 2 of the drawings accompanying the Provisional Specification is built up of two superimposed cosine waves having amplitudes in the ratio of 1À5 to 1 and the portion used in forming the cam profile is the flat-topped portion extending from 76 degrees to 284 degrees. A constant velocity ramp portion may be provided at each end of the lift portion of the cam. Specification 573,294 is referred to.
GB239151A 1951-01-31 1951-01-31 Improvements in or relating to cams for actuating the valves of internal combustion engines Expired GB736582A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB239151A GB736582A (en) 1951-01-31 1951-01-31 Improvements in or relating to cams for actuating the valves of internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB239151A GB736582A (en) 1951-01-31 1951-01-31 Improvements in or relating to cams for actuating the valves of internal combustion engines

Publications (1)

Publication Number Publication Date
GB736582A true GB736582A (en) 1955-09-14

Family

ID=9738715

Family Applications (1)

Application Number Title Priority Date Filing Date
GB239151A Expired GB736582A (en) 1951-01-31 1951-01-31 Improvements in or relating to cams for actuating the valves of internal combustion engines

Country Status (1)

Country Link
GB (1) GB736582A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0319180A2 (en) * 1987-12-02 1989-06-07 Emhart Industries, Inc. Improved mechanism for glass container inspection apparatus
CN114954829A (en) * 2022-07-01 2022-08-30 武汉理工大学 Ship main propulsion device vibration signal simulation method for diagnosis and verification

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0319180A2 (en) * 1987-12-02 1989-06-07 Emhart Industries, Inc. Improved mechanism for glass container inspection apparatus
EP0319180A3 (en) * 1987-12-02 1990-03-14 Emhart Industries, Inc. Improved mechanism for glass container inspection apparatus
CN114954829A (en) * 2022-07-01 2022-08-30 武汉理工大学 Ship main propulsion device vibration signal simulation method for diagnosis and verification

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