The three major parts of domestic cars are the engine, gearbox, and chassis. Many people will choose three major quality cars when buying a car, which is very necessary, because the quality of the three major pieces makes a measure of the quality of a car.
The role of the engine is great, it can provide kinetic energy to the car. The engine determines the kinetic energy, economy, stability and environmental protection of a car.
Since the power sources of the engine are different, the engine of the car is divided into diesel engine, gasoline engine, electric vehicle engine and hybrid engine. Engines can convert other forms of energy into mechanical energy, which gives power to the operation of the car. The engine is the weakness of domestic cars, earlier the development of the domestic automobile industry is not prosperous, most of the cars are dependent on the engine of Mitsubishi Motors, with the development of technology, most domestic car brands are no longer used. Due to the continuous improvement of technology, the overall level of domestic engines has not been much different from that of joint venture cars, but the core components of many engines still rely on foreign research and development.
The car's gearbox is divided into manual and automatic two, manual transmission is manual transmission, automatic transmission is automatic transmission. The gearbox can change the rotation point of the car and extend the speed of the drive to change, if the engine does not change the direction of rotation, the vehicle can also drive backwards, when the neutral block interrupts the power transmission, so that the engine can start and change the speed, so that the transmission can change or output power.
The main role of the car chassis is to support and install the combination of the car's engine and its parts, so that the car has an overall shape, the chassis is responsible for the power of the engine, so that the car movement to ensure the normal driving of the car, the main car chassis parts are: the transmission system, steering system and braking system.