yiwu auto parts

The serpentine belt is designed to drive several peripheral devices in the engine, including the alternator, power steering pump, water pump, air conditioning compressor, and more. Unlike the older vehicles that used multiple belts to connect these components, the serpentine belt provides a single, continuous loop that simplifies the design and improves reliability. The design was introduced to reduce engine noise and minimize the chances of belt failure.


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The primary function of a car belt pulley is to guide and support the serpentine belt or timing belt, which wraps around the pulleys to drive multiple components of the engine. In essence, the pulley acts as a wheel or lever that helps facilitate the smooth operation of the belt. As the engine runs, the crankshaft turns, driving the belts, which, in turn, rotate the pulleys. This mechanical action enables the powered accessories to function, ensuring a vehicle can operate effectively without overheating or experiencing electrical failures.


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