why inlet valve is larger in size w.r.t exhaust valve

Question

Accepted Answer

The inlet valve is larger in size compared to the exhaust valve to optimize the flow of air/fuel mixture into the combustion chamber.

The larger size of the inlet valve allows for a greater volume of air/fuel mixture to enter the combustion chamber during the intake stroke.
This helps in achieving better combustion efficiency and power output.
The exhaust valve, on the other hand, is smaller in size as it only needs to allow the combustion by-products to exit the combustion chamber during the exhaust stroke.
The size difference between the inlet and exhaust valves is designed to optimize the engine's performance and efficiency.
For example, in a four-stroke internal combustion engine, the larger inlet valve ensures sufficient air/fuel mixture intake for proper combustion, while the smaller exhaust valve facilitates the efficient expulsion of exhaust gases.

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