Generally speaking, vehicles with four or more wheels travel on land without relying on tracks or cables. Cars are usually used as trailers for carrying and towing passengers and goods, and some have been modified or equipped with special equipment to become special vehicles for completing specific transportation tasks or operational tasks, but they do not include machinery specially used for agriculture. Full trailers and semi-trailers have no power devices themselves, and only when they form an automobile train with a tractor do they belong to the automobile category.
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automobile components
1, the engine is the power plant of the car. Its function is to make the fuel burn to generate power, and then drive the wheels through the transmission system of the chassis to make the car run. There are two main types of engines: gasoline engines and diesel engines. A gasoline engine consists of a crank-connecting rod mechanism, a valve train, an oil supply system, a cooling system, a lubrication system, an ignition system and a starting system. The ignition mode of diesel engine is compression ignition, so there is no ignition system.
2. The function of the chassis is to support and install the automobile engine and its parts and assemblies, so as to form the overall shape of the automobile, and accept the power of the engine to make the automobile move and ensure the normal running. The chassis consists of four parts: transmission system, running system, steering system and braking system.
3. The car body is installed on the frame of the chassis for drivers and passengers to ride or load goods. The body of a car or bus is generally an integral structure, and the body of a truck is generally composed of a cab and a cargo box.
4. Electrical equipment consists of power supply and electrical equipment. Power supply includes battery and generator. Electrical equipment includes the starting system of engine, the ignition system of gasoline engine and other electrical equipment.
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