valve timing

Adjusting the position of the camshaft to the crankshaft so that the valves will open and close at the proper time. Also see variable valve timing

Dictionary of automotive terms. 2015.

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  • Valve timing — In a piston engine, the valve timing is the precise timing of the opening and closing of the valves.In four stroke cycle engines and some two stroke cycle engines, the valve timing is controlled by the camshaft. It can be varied by modifying the… …   Wikipedia

  • Continuous variable valve timing — offers a unique ability to have independent control of the intake and exhaust valves in an internal combustion engine. For any engine load criteria, the timing of intake and exhaust can be independently programmed [1]. The main variations of… …   Wikipedia

  • Variable valve timing — Variable valve timing, or VVT, is a generic term for an automobile piston engine technology. VVT allows the lift or duration or timing (some or all) of the intake or exhaust valves (or both) to be changed while the engine is in operation. Two… …   Wikipedia

  • Variable Valve Timing and Lift Electronic Control — VTEC (Variable Valve Timing and Lift Electronic Control) ist eine 1983 für Motorräder eingeführte Technik der Firma Honda zur variablen Ventilsteuerung in Motoren. Inhaltsverzeichnis 1 Zweck des Systems 2 Varianten 2.1 DOHC VTEC 2.2 SOHC VTEC …   Deutsch Wikipedia

  • variable valve timing — Through the use of computers, the precise time when the valves open and close can be altered. It may be better to change the timing slightly when the engine is at a higher RPM than when it is slower …   Dictionary of automotive terms

  • Timing — is the spacing of events in time. Some typical uses are:* The act of measuring the elapsed time of something or someone, often at athletic events such as swimming or running, where participants are timed with a device such as a stopwatch. *… …   Wikipedia

  • timing — One of the essential factors in a internal combustion engine (Fuel, Air, Proper proportion of mixture, compression Timing, spark). When the piston is in the compression stroke both valves must be closed. If one or more is open, the valve timing… …   Dictionary of automotive terms

  • Timing belt — For other belts, see Belt (disambiguation). Timing belt Timi …   Wikipedia

  • 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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