four valve

An engine which has four valves (two intake and two exhaust) for each cylinder. Multiple valve systems offer better breathing.

Dictionary of automotive terms. 2015.

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  • Valve Software — Valve Corporation Год основания Кирклэнд, Вашингтон (1996) Ключевые фигуры Гейб Ньюэлл, соучредитель и управляющий директор Тип …   Википедия

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  • Four-way — a. Allowing passage in either of four directions; as, a four way cock, or valve. Francis. [1913 Webster] {Four way cock}, a cock connected with four pipes or ports, and having two or more passages in the plug, by which the adjacent pipes or port …   The Collaborative International Dictionary of English

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  • Valve replacement — surgery is the replacement of one or more of the heart valves with either an artificial heart valve or a bioprosthesis (homograft from human tissue or xenograft e.g. from pig).There are four procedures: * Aortic valve replacement * Mitral valve… …   Wikipedia

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