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

那金属轴叫凸轮轴，在发动机里的每个气门一般有各自的凸轮。

youdao

Since the engine has no valves, it doesn't need any camshaft, valve lifters and so on.

因为发动机没有阀门，它不需要任何凸轮轴、起阀器等。

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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