the timing belt

Another type of belt found in some vehicles is the timing belt. Unlike the serpentine belt, the timing belt is critical for synchronizing the rotation of the crankshaft and camshaft. This ensures that the engine's valves open and close at the correct times in relation to the position of the pistons. Generally made from a rubber material reinforced with fiber, the timing belt is subject to significant stress due to high temperatures and mechanical strain.


...

The serpentine belt is designed to wrap around several pulleys in the engine, creating a continuous loop. Its primary objective is to transfer power from the engine’s crankshaft to the various accessories that require it. This is achieved through the rotation of the crankshaft which, in turn, spins the serpentine belt. The belt's ability to power multiple components simultaneously allows for a more compact engine design, reducing the number of belts required compared to older vehicles that often had multiple V-belts.


...