In what type of engine is the intake valve held open longer than normal during the compression stroke?
A)Wankel
B)Atkinson cycle
C)two-stroke
D)diesel

Question

Quizplus · Accepted Answer

The Atkinson cycle engine holds the intake valve open longer than normal during the compression stroke to allow a part of the air-fuel mixture back into the intake manifold. This process effectively reduces the compression ratio without changing the expansion ratio, improving fuel efficiency.

In What Type of Engine Is the Intake Valve Held