What are the four systems that make up a car chassis? What is the function of each system?

The automobile chassis consists of four systems: transmission system, running system, braking system and steering system. Drive train: the drive train is generally composed of clutch, transmission, universal drive, main reducer, differential and half shaft. The power of the automobile engine is transmitted to the driving wheels through the transmission system. Drive system: The drive system consists of frame, axle, wheels (attention) and suspension. Steering system: A special mechanism used to change or restore the driving direction of an automobile is called automobile steering system. According to the different energy sources of steering force, steering system can be divided into mechanical steering system and power steering system. Braking system: composition and function of automobile braking system. A series of special devices used to make the outside world (mainly the road surface) exert a certain force on some parts of the car (mainly the wheels), so as to brake them to a certain extent are collectively called braking systems.