What is the purpose of a timing belt?

The timing belt plays a crucial role in the engine's operation by serving to synchronize the rotation of the crankshaft and camshaft. This synchronization is vital for maintaining the proper valve timing as the engine operates. The crankshaft converts the linear motion of the pistons into rotational motion, while the camshaft controls the opening and closing of the engine's valves. If the timing belt fails or becomes misaligned, it can lead to a condition known as "timing misalignment," which can cause severe engine damage and performance issues.

While other options refer to important aspects of engine function, they do not accurately describe the primary purpose of the timing belt. Increasing engine power, improving fuel injection timing, and maintaining oil pressure relate to different components and systems within the engine rather than the synchronization function that the timing belt specifically provides.