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On modern four stroke engines the inlet valve opens just

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On modern four stroke engines the inlet valve opens just

(a) Before TDC

(b) After TDC

(c) Before BDC

(d) After BDC

This question was addressed to me by my school principal while I was bunking the class.

Question is taken from Engine Valves and their Mechanisms in portion Internal Combustion Engines of Automobile Engineering

1 Answer

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Best answer
Correct option is (a) Before TDC

To elaborate: Inlet valve opens before the piston reaches Top Dead Centre.

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