The working principle of automobile camshaft is driven by the crankshaft to realize the important mechanism of valve control. The rotating motion of the camshaft is closely related to the rotation of the crankshaft, and the opening and closing of the valve are driven by the convex point on the CAM, so as to realize the working cycle of the valve. In a four-stroke engine, the camshaft speed is usually twice as fast as the crankshaft speed, because each cylinder working cycle requires two crankshaft rotation cycles to complete
Advantages
precise control of valve movement : the camshaft controls the opening and closing of the valve through different shapes and numbers of cams, so as to accurately adjust the intake and exhaust volume, optimize the performance and efficiency of the engine
Improved engine performance : Double - and triple-cam camshafts allow for more precise valve control, increasing engine power output and performance. Twin-camshaft engines, for example, continued to be mass-produced thanks to their technological accumulation and research and development efforts during the oil crisis of the 1970s and strict emission control regulations
