poly belt

In contrast to the fan belt, the timing belt plays a more crucial role in the engine's operation. This belt is responsible for synchronizing the movement of the crankshaft and camshaft, ensuring that the engine's valves open and close at the correct intervals during each cylinder's intake and exhaust strokes. A timing belt is typically made of a reinforced rubber material and may include teeth or grooves to grip the camshaft and crankshaft securely.


fan belt timing belt

fan

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The mechanism for varying the pulley diameter can take many forms, including adjustable sheaves or conical pulleys. By changing the effective diameter of the pulleys, the system can alter the speed ratio between the input and output. As the diameter of the driving pulley decreases, the speed of the driven pulley increases, and vice versa. This principle allows for smooth transitions in speed and ensures that the system can operate efficiently under varying loads.


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