overhead valve

overhead valve
A type of internal combustion engine design which has the inlet and exhaust valves in the cylinder head (and therefore above the piston). The camshaft can be beside the pistons (with pushrods and rockers operating the valves) or above the valves, with the latter usually referred to as overhead cam.

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Look at other dictionaries:

  • Overhead valve — OHV redirects here. OHV may also refer to Off highway vehicle. Components of a pushrod valve actuation system …   Wikipedia

  • overhead valve — noun : an internal combustion engine valve operated from a camshaft running above the cylinder head * * * overhead valve, a valve in the cylinder head, above the piston in certain internal combustion engines …   Useful english dictionary

  • overhead valve — A valve located in the upper part of the aircraft reciprocating engine cylinder head. Both the inlet and outlet valves are overhead valves. See induction stroke …   Aviation dictionary

  • overhead-valve engine — /oh veuhr hed valv /. See I head engine. [1965 70] * * * …   Universalium

  • overhead valve engine — noun an internal combustion engine in which the cylinder head contains the inlet and exhaust valves. Abbrev.: o.h.v. engine …  

  • overhead-valve engine — /oh veuhr hed valv /. See I head engine. [1965 70] …   Useful english dictionary

  • Overhead camshaft — A cylinder head sliced in Fifths shows two overhead camshafts one above each of the two valves. Overhead cam (OHC) valvetrain configurations place the engine camshaft within the cylinder heads, above the combustion chambers, and drive the valves… …   Wikipedia

  • valve-in-head engine — An engine in which both intake and exhaust valves are mounted in the cylinder head and are driven by pushrods or by an overhead camshaft. Also called I head engine or Overhead valve engine …   Dictionary of automotive terms

  • Valve — This article is about the flow control device. For the game developer, see Valve Corporation. For the electronic component, see Vacuum tube. For other uses, see Valve (disambiguation). These water valves are operated by handles. A valve is a… …   Wikipedia

  • valve — A device used to either open or close an opening to allow or prevent the flow of a liquid or gas from one place to another. There are many different types. See ABS relay valve accumultor valve air valve carburetor air control valve air gulp valve …   Dictionary of automotive terms

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