Automotive Glossary
Automotive Glossary
Browse the glossary using this index
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ValueThe degree of darkness or lightness of a colour. | |
ValveA control device that restricts or cuts off the flow of a liquid or gas. | |
Valve BallA ball used to create a seal inside a valve. | |
Valve BlockCollection of valves in one unit that operate a common system (automatic transmission for example). | |
Valve BounceBounce of a valve in its seat when closing. Usually occurs as a result of the engine speed being too high or the valve spring losing tension through age or deterioration. | |
Valve Gear (Train)The mechanism from a cam to a valve in an engine that transmits the movement of the cam to open the valve. | |
Valve GuideThe tube or sleeve in the cylinder head that locates a valve centrally in its seat. The valve slides in the guide during opening and closing. | |
Valve HeadThe top or disc end of a valve that seals the gases in the cylinder head. | |
Valve LagThe term applied to valves which remain open after the piston has passed tdc or bdc at the end of a stroke in the four stroke cycle. | |
Valve LeadThe term applied to valves which open before the piston has passed tdc or bdc at the beginning of a stroke in the four stroke cycle. | |