Under what conditions is the EGR valve open?
A)starting
B)idle (warm engine)
C)cruise (warm engine)
D)Wide open throttle

Question

Quizplus · Accepted Answer

The EGR (Exhaust Gas Recirculation) valve is typically open during cruising conditions with a warm engine to reduce nitrogen oxide emissions by recirculating a portion of the exhaust gases back into the intake manifold. It is usually closed during starting, idle, and wide open throttle to maintain engine performance and stability.

Under What Conditions Is the EGR Valve Open