The value-opening mechanism includes a valve lifter and a CAM on a camshaft.

一套气门开启机构包括一个气门挺杆和一个在凸轮轴上的凸轮。

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The value-opening mechanism includes a valve lifter and a cam on a camshaft .

一套气门开启机构包括一个气门挺杆和一个在凸轮轴上的凸轮。

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The metal shaft, called the camshaft, typically has individual cams for each valve in the engine.

那金属轴叫凸轮轴，翣在发动机里的每个气门一般有各自的凸轮。

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It's an overhead valve engine with a single camshaft that uses push rods to open and close the 16 valves.

FORBES: The Engine That Could