There are thousands of parts in a vehicle, but when someone asks "what is a vehicle made of", many people don't know where to start. Generally speaking, vehicles are divided into four main parts:

1) body

2) engine

3) chassis

4) electrical equipment

Body

First, the body is the part of the vehicle used to carry or load people. Including body (frame), body appearance parts, body interior parts, body electrical accessories. Car, passenger car body is integral structure commonly. The body of a truck is generally composed of two parts, the cab and the cargo box.

The body is divided into "monocoque body", "semi-monocoque body" and "non-monocoque body" according to other bearing chassis structures. For example: the car engine, gearbox and other chassis directly connected to the body of the body, the body needs to carry their weight, so it is a monocoque body. The truck chassis has a separate girder, used to carry the chassis assembly, the body is only responsible for the load of people and goods, so it is not load-bearing body. It can be seen that the bearing capacity of the load-bearing body is not as good as that of the non-bearing body because it bears the load of the chassis. But because the structure is compact, the vehicle is more integrated, so the noise is low, the weight is small, generally used for cars and other models. On-monocoque vehicles have more powerful load-carrying capacity, so in addition to trucks, there are many other hard off-road vehicles with non-monocoque body structures.

The engine

The engine mentioned here, in fact, includes all its accessories, such as fuel tank, exhaust aftertreatment system and so on, they can correspond to the engine "five mechanisms", "two systems".

Chassis

In addition to the body and engine, the rest of the frame (as mentioned earlier, the bearing body has no separate frame), gearbox, rear axle, wheels, and so on are all part of the chassis.

Electrical equipment

Electrical equipment mainly consists of power supply system, electrical equipment and distribution equipment. You can see that the electrical equipment is embedded in the other three parts, but it is like a dense network, connecting the various parts of the car, and coordinating the work of the various parts like a commander. Therefore, it is very important to list this part separately for the overall design of the vehicle.

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