GB809027A - Improvements relating to valve operating mechanism for internal combustion engines - Google Patents

Improvements relating to valve operating mechanism for internal combustion engines

Info

Publication number
GB809027A
GB809027A GB2205655A GB2205655A GB809027A GB 809027 A GB809027 A GB 809027A GB 2205655 A GB2205655 A GB 2205655A GB 2205655 A GB2205655 A GB 2205655A GB 809027 A GB809027 A GB 809027A
Authority
GB
United Kingdom
Prior art keywords
valve
cam
rocker
roller
plunger
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
GB2205655A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2205655A priority Critical patent/GB809027A/en
Publication of GB809027A publication Critical patent/GB809027A/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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/30—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of positively opened and closed valves, i.e. desmodromic valves

Landscapes

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

Abstract

809,027. Valve gear. SUCKLING, J. H. July 29, 1955. No. 22056/55. Class 7(6) In a valve operating mechanism, for an internal combustion engine of the type employing poppet or mushroom valves, including a first rocker arm operated by a cam to open the valve and a second rocker which acts under the influence of a cam to impart movement to the valve (or at least one of the valves if there be more than one) in a a closing direction after the valve has been opened, the second rocker is supported for a rockting movement by a plunger mounted for sliding movement in a guide, the plunger being backed by a compression spring. In Fig. 1 the valve is opened by a cam 9 and rocker 10. A second cam 16 on the camshaft 4 has part of its profile at least partially concentric to the camshaft axis. As the peak of the cam 9 reaches the arm of the rocker 10' the flat part 16a of the cam 16 is brought into concidence with the roller 29 so that the rocker 28 offers no resistance to opening of the valve 3. The flat part 16a may be so designed that when it comes into concidence with the roller 29 it allows the roller to rise to such an extent that the spring 20 will be free to raise the plunger 18 in pocket 17. The degree of upward movement may be sufficient to cause the upper end of the plunger to come into engagement with the removable cover cap 26. The cam 16 may be formed with a portion of reduced radius to enable the roller to rise sufficiently to relieve the valve 3 of the spring loading at the stage :of rising pressure in the cylinder. The valve shown is the exhaust valve. It is stated that the mechanism promotes rotation of the valve for every several thousands of revolutions of the crankshaft.
GB2205655A 1955-07-29 1955-07-29 Improvements relating to valve operating mechanism for internal combustion engines Expired GB809027A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2205655A GB809027A (en) 1955-07-29 1955-07-29 Improvements relating to valve operating mechanism for internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2205655A GB809027A (en) 1955-07-29 1955-07-29 Improvements relating to valve operating mechanism for internal combustion engines

Publications (1)

Publication Number Publication Date
GB809027A true GB809027A (en) 1959-02-18

Family

ID=10173183

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2205655A Expired GB809027A (en) 1955-07-29 1955-07-29 Improvements relating to valve operating mechanism for internal combustion engines

Country Status (1)

Country Link
GB (1) GB809027A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4535641A (en) * 1981-06-13 1985-08-20 Lucas Industries Plc Reciprocating plunger fuel injection pump
EP1580405A1 (en) * 2004-03-26 2005-09-28 Stefan Battlogg Desmodromic valve drive

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4535641A (en) * 1981-06-13 1985-08-20 Lucas Industries Plc Reciprocating plunger fuel injection pump
EP1580405A1 (en) * 2004-03-26 2005-09-28 Stefan Battlogg Desmodromic valve drive

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