What are the components and functions of the crankshaft flywheel group? The components of the crankshaft flywheel group include: 1.Crankshaft: The crankshaft is a key component of the engine. It is a cylindrical shaft with offset crankpins that convert the reciprocating motion of the pistons into rotational motion. The crankshaft drives the transmission and other engine accessories. 2.Flywheel: Th...