Question

In a typical medium speed 4-stroke cycle diesel engine the inlet valve

• A. opens at ${20}^0$ before top dead center and closes at ${35}^0$ after the bottom dead center.
• B. opens at top dead center and closes at bottom dead center.
• C. opens at ${10}^0$ after top dead center and closes at ${20}^0$ before the bottom dead center.
• D. may open or close anywhere

Answer 1

The correct option is A opens at ${20}^0$ before top dead center and closes at ${35}^0$ after the bottom dead center.

inlet valve.The valve through which a fluid is drawn into the cylinder of a positive-displacement engine, pump, or compressor. Also known as induction valve.

In a typical medium speed 4-stroke cycle diesel engine the inlet valve opens at ${20}^0$ before top dead center and closes at ${35}^0$ after the bottom dead center.