valve gear

valve gear
A mechanism that operates the intake and exhaust valves; includes the cams, pushrods, rocker arms, etc. but not the valves themselves

Dictionary of automotive terms. 2015.

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  • Valve gear — Valve Valve, n. [L. valva the leaf, fold, or valve of a door: cf. F. valve.] [1913 Webster] 1. A door; especially, one of a pair of folding doors, or one of the leaves of such a door. [1913 Webster] Swift through the valves the visionary fair… …   The Collaborative International Dictionary of English

  • valve|gear — «VALV GIHR», noun. a mechanism which regulates the motions of the valves of an engine or other mechanical apparatus …   Useful english dictionary

  • Valve gear — The valve gear of a steam engine is the mechanism that operates the inlet and exhaust valves to admit steam into the cylinder and allow exhaust steam to escape, respectively, at the correct points in the cycle. It is sometimes referred to as the… …   Wikipedia

  • valve gear — noun : any of numerous gears by which motion is given to the valves of an engine and especially a steam engine; specifically : such a gear for a steam engine by which the cutoff may be varied while the engine is running and the engine started,… …   Useful english dictionary

  • valve gear — (in a reciprocating engine) the mechanism for opening and closing the valves at certain points in each stroke. Also called valve train. * * * …   Universalium

  • valve gear — /ˈvælv gɪə/ (say valv gear) noun the mechanism for opening and closing the valves of a reciprocating engine …  

  • valve gear — noun the mechanism that controls the opening and closing of the cylinder valves in a steam engine or internal combustion engine …   English new terms dictionary

  • Walschaerts valve gear — The Walschaerts valve gear is a type of steam engine valve gear invented by Belgian railway mechanical engineer Egide Walschaerts in 1844. The gear is sometimes named without the final s , since it was incorrectly patented under that name. It was …   Wikipedia

  • Stephenson valve gear — The Stephenson valve gear or Stephenson link or shifting link [Snell, J B (1971). Mechanical Engineering: Railways, Longman Co, London] is a simple design of valve gear that was widely used throughout the world for all kinds of steam engine. It… …   Wikipedia

  • Gresley conjugated valve gear — The Gresley conjugated valve gear was a valve gear for steam locomotives designed by Sir Nigel Gresley, chief mechanical engineer of the LNER, assisted by Harold Holcroft. It enables a three cylinder locomotive to operate with only the two sets… …   Wikipedia

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