These flexible bands of reinforced rubber or other materials transfer rotational power between engine components. A serpentine belt, for instance, powers accessories like the alternator, power steering pump, and air conditioning compressor. Another type synchronizes the rotation of the crankshaft and camshaft, ensuring precise valve timing essential for engine operation.
Proper function of these components is crucial for vehicle performance and reliability. Without these power transmission systems, critical engine functions would cease, leading to breakdowns or complete engine failure. Their development has been instrumental in the evolution of internal combustion engines, enabling more complex designs and increased efficiency over time.