What is a crankshaft?

The crankshaft is a vital component in an internal combustion engine, primarily responsible for converting the linear motion of the pistons into rotational motion. As the pistons move up and down during the combustion cycle, they push against the connecting rods, which are attached to the crankshaft. This action causes the crankshaft to rotate, ultimately delivering the power needed to turn the engine's flywheel and, subsequently, the vehicle's wheels.

This conversion of motion is essential for the operation of the engine, as it facilitates the transfer of energy from the combustion process into usable mechanical energy. The crankshaft's design includes various features, such as counterweights and bearings, that help manage vibrations and ensure smooth operation, ultimately contributing to the overall performance and efficiency of the engine. Understanding the role of the crankshaft is crucial for anyone studying engine mechanics and repairs.