What is a crank


Mechanical principle linkage mechanism noun. In a connecting rod mechanism, the one that can make a full circle rotation is called a crank.
Crank train The main mechanism of an engine. Its function is to convert the reciprocating motion of the piston into the rotational motion of the crankshaft and to convert the force acting on the piston into the external torque of the crankshaft to drive the wheels of the car. The crank rod mechanism consists of a piston block, a connecting rod block, a crankshaft, a flywheel block and other components.