The camshaft rotates in phase with the crankshaft, but at half its speed.The camshaft rotates in phase with the crankshaft, but at half its speed.
凸轮轴和曲轴协调旋转,但速度仅是曲轴的一半。
Therefore they are actuated by a cam-shaft running in phase with the crankshaft.Therefore they are actuated by a cam-shaft running in phase with the crankshaft.