Why the exhaust valve is Opened before B.D.C. and even after T.D.C.

DWQA QuestionsWhy the exhaust valve is Opened before B.D.C. and even after T.D.C.
itipapers Staff asked 4 years ago

Why the exhaust valve is Opened before B.D.C. and even after T.D.C. why exhaust valve opens before bdc effect of valve timing on engine performance importance of valve timing diagram the exhaust valve usually starts opening what is valve overlap

1 Answers
itipapers Staff answered 11 months ago

The opening of valve in advance does not have any ill-effect on the power of the engine because the full pressure of the gases has already pushed the piston. On the contrary, the exhaust gases get full time to come out. By keeping the valve opened even after T.D.C. we want to ensure that no burnt gases have remained inside the cylinder even if some amount of fresh mixture has to be wasted.

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