The period of time that the exhaust and intake valves are both open is called:
A) valve angle
B) valve clearance
C) valve timing
D) valve overlap

Question

Quizplus · Accepted Answer

Valve overlap is the period of time when both the exhaust and intake valves are open in an internal combustion engine. This allows for proper scavenging of exhaust gases and fresh air/fuel mixture into the combustion chamber.

The Period of Time That the Exhaust and Intake Valves