Inglês/Português
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Back to: "V"valve overlap
- Definição1
- The portion of the operaring cycle of a four-stroke-cycle reciprocating engine in which both the intake and the exhaust valves are off their seats at the same time. Valve overlap occurs at the end of the exhaust stroke and the beginning of the intake stroke. Valve overlap increases the efficiency of engine operation. The low pressure caused by the exhaust gases leaving the cylinder helps the fresh fuel-air charge start moving into the cylinder.
- Fonte1
- CRANE, Dale (ed.). Dictionary of aeronautical terms. 2nd ed. Renton: ASA, 1991.
- Fonte2
- ARAÚJO, João Richard Barcelos. Inglês técnico: técnicos em manutenção de aeronaves. [S.l]: [s.n.], [200-]. 100 p.
- Português
- cruzamento de válvula