The exhaust valve in a four stroke cycle petrol engine Options: A . &nbspopens at 50° before bottom dead centre and closes at 15° after top dead centre B . &nbspopens at bottom dead centre and closes at top dead centre C . &nbspopens at 50° after bottom dead centre and closes at 15° before top dead centre D . &nbspmay open and close anywhere

The exhaust valve in a four stroke cycle petrol engine

Question

The exhaust valve in a four stroke cycle petrol engine

Options:

A . opens at 50° before bottom dead centre and closes at 15° after top dead centre

B . opens at bottom dead centre and closes at top dead centre

C . opens at 50° after bottom dead centre and closes at 15° before top dead centre

D . may open and close anywhere

Answer: Option A
Answer: (a).opens at 50° before bottom dead centre and closes at 15° after top dead centre

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