Camshafts

Camshafts

Camshafts are an essential component of an internal combustion engine that is responsible for controlling the opening and closing of the engine's valves. The camshaft is a long, cylindrical rod that is usually located in the engine block and is connected to the crankshaft via a timing belt or chain. As the crankshaft rotates, the camshaft moves in sync with it, and the lobes on the camshaft push on the engine's valves, causing them to open and close at the appropriate times. The shape and size of the camshaft's lobes determine the duration and timing of the valve opening and closing events, which in turn affect the engine's performance characteristics. For example, a camshaft with more aggressive lobes that keep the valves open for longer periods of time can increase the engine's power output, but it may also reduce its fuel efficiency and idle quality. Camshafts can be made from a variety of materials, including cast iron, steel, and aluminum, and they can be either solid or hollow. Solid camshafts are more durable and can handle higher engine speeds, but they are also heavier and can cause more wear on the engine's valve train. Hollow camshafts, on the other hand, are lighter and can reduce the engine's rotating mass, but they are also more prone to flexing and may not be suitable for high-performance engines. In summary, camshafts are a critical component of an internal combustion engine that controls the opening and closing of the engine's valves. The shape and size of the camshaft's lobes determine the engine's performance characteristics, and camshafts can be made from a variety of materials and can be either solid or hollow.

internal combustion engine, valves, lobes, duration, timing

— Joseph Nelson

CITATION : "Joseph Nelson. 'Camshafts.' Design+Encyclopedia. https://design-encyclopedia.com/define/camshafts?E=367995 (Accessed on October 14, 2026)"