When a valve cam ramps from base circle to outer base circle, what is happening to the valve it actuates?
A) it is stationary
B) it is opening
C) it is closing
D) it is fully open

Question

Quizplus · Accepted Answer

When a valve cam ramps from base circle to outer base circle, it means the cam is pushing against the valve lifter or follower, causing the valve to open. This is part of the normal operation of an internal combustion engine, where the camshaft controls the opening and closing of the valves.

When a Valve Cam Ramps from Base Circle to Outer