What are the four systems of automobile chassis?

A car usually consists of four parts: engine, chassis, body and electrical equipment.

Engine: crank-connecting rod mechanism, valve train, oil supply system, ignition system, lubrication system, cooling system and starting system.

2. Chassis: transmission system, running system, steering system and braking system. The transmission system transmits the power of the engine to the driving wheels, and consists of clutch, transmission, universal transmission, main reducer and other assemblies. The driving system consists of frame, steering axle, driving axle, suspension and wheels. The steering system consists of steering gear and steering mechanism. The braking system usually consists of two independent devices, namely the service braking system and the parking braking system.

Third, the body: used to place drivers, passengers and goods.

Electrical apparatus: It consists of power supply, ignition system, starting system, automobile lighting system, signal system and instrument.