cam lobe造句

"After the cam lobe moves out from under the valve lifter, the valve spring forces the valve up onto its seat again."

The ZDDP additive works by getting the zinc to react with the iron of the tappet surface and cam lobe, creating a glassy sacrificial barrier between the two.

"As the camshaft turns, the cam lobe comes around under the valve lifter. This raises the lifter, which in turn pushes upward on the push rod. The push rod, as it is lifted, causes the end of the rocker arm to move up."

In this arrangement, the cam lobes push against round metal cylinders called cam follower.