overhead valve

English

Noun

overhead valve (plural overhead valves)

  2. (automotive) A type of valve in an internal combustion engine, and thus also (metonymic) the type of valvetrain design, the type of engine that uses it, or an instance of such an engine; this design 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.
    Synonym: OHV (initialism)
    Coordinate terms: overhead cam, OHC; side valve, flathead, L-head
    This engine has overhead valves.
    This engine is an overhead valve model.   This engine is an overhead valve.

Derived terms

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