General Studies · IC Engines
During the power stroke of a four-stroke spark ignition engine, what is the status of the inlet and exhaust valves?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The inlet valve opens, and the exhaust valve closes.
- 2The exhaust valve opens, and the inlet valve closes.
- 3Both valves remain completely closed.✓
- 4Both valves open simultaneously.
Correct answer
Both valves remain completely closed.
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