The car engine, as the heart of a vehicle, is the core component that drives the car.
It consists of two main mechanisms: the crankshaft and connecting rod mechanism and the valve train, as well as five major systems: cooling, lubrication, ignition, fuel supply, and starting system. The main components of an engine include the cylinder block, cylinder head, piston, piston pin, connecting rod, crankshaft, and flywheel.
