The role of the chassis is to support, install the car engine, and receive and transmit the power of the engine to make the car move. The chassis is mainly composed of four parts: transmission system, driving system, steering system, braking system.
Drive train (responsible for transmitting the power of the engine to the driving wheels, without it the car can only be a modular sofa with a shell)
Driving system (connects all parts of the car into a whole and supports the whole car, such as the frame, suspension, wheels, and axles are its parts)
Steering system (this is easy to understand, without it, you can only drive on the straight road, there is no chance to turn)
Braking device (the most dangerous thing to drive is when you want to stop, it works: mainly for deceleration, parking and parking)