What do you mean by three big cars?

The three main parts of a car are engine, gearbox and chassis.

1, engine

The engine is called the heart of the car, and the engine is the power source of the car. Automobile engines are mostly thermal devices, referred to as heat engines.

2. Gearbox

It is divided into manual and automatic. Manual gearbox is mainly composed of gears and shafts, which produce variable speed and torque through different gear combinations. Automatic gearbox AT consists of hydraulic torque converter, planetary gear, hydraulic variable distance system and hydraulic control system. Speed change and torque are realized by hydraulic transmission and gear combination.

3. Chassis

Automobile chassis consists of four parts: transmission system, driving system, steering system and braking system. The function of the chassis is to support and install the automobile engine, its parts and assemblies, form the overall shape of the automobile, accept the power of the engine, enable the automobile to move and ensure normal running.

Introduction of automobile engine types

1. According to the working mode of the air intake system, it can be divided into two types: natural inhalation and turbocharging.

2. In-line engines, V-type engines, W-type engines and horizontally opposed engine are classified according to cylinder arrangement.

3. According to different cooling methods, it can be divided into water-cooled engine and air-cooled engine. Water-cooled engine is widely used in modern automobile engines because of its uniform cooling, reliable operation and good cooling effect. Automobile engine is the device that provides power for automobile, and it is the heart of automobile, which determines the power, economy, stability and environmental protection of automobile. Most of them are thermal power devices, referred to as heat engines.