What are the four major components of a car?

1 Answers
StZane
07/29/25 10:16pm
A car is typically composed of four major components: the engine, chassis, body, and electrical equipment, collectively known as the "four major components" of a car. These four components are essential for every vehicle, and the absence of any one would render the car incomplete and unable to be manufactured. Engine: The engine is the power unit of the car. It consists of two major mechanisms and five systems: the crankshaft and connecting rod mechanism; the valve mechanism; the cooling system, fuel supply system, lubrication system, ignition system, and starting system. However, diesel engines lack an ignition system compared to gasoline engines. Chassis: The chassis serves to support and mount the car engine and its various components, forming the overall structure of the car. It receives power from the engine, enabling the car to move and ensuring normal operation. The chassis is composed of four parts: the transmission system, running gear, steering system, and braking system. Body: The body is mounted on the frame of the chassis and is designed for the driver, passengers, or cargo. The body of a sedan or bus is usually a unitary structure, while the body of a truck generally consists of two parts: the cab and the cargo compartment. Electrical Equipment: The electrical equipment is divided into two main parts: the power source and the electrical devices. The power source includes the battery and the generator; the electrical devices include the engine starting system, the ignition system of gasoline engines, and other electrical appliances.
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