The main function of the fuel tank is to store fuel, and at the same time it has the functions of dissipating heat, precipitating impurities, and separating air bubbles.

　　A fuel tank is a container used to store fuel in a car or other mechanical equipment to ensure that the equipment can continue to obtain fuel while driving or working.It delivers the stored fuel to the engine through the fuel pump to ensure the normal operation and endurance of the equipment.

　　In addition, the fuel tank also has the following functions：

　　Heat dissipation.The fuel tank can help cool the engine and fuel system and prevent overheating.

　　Precipitate impurities.The bottom of the fuel tank is designed to be inclined to facilitate the discharge of sediments and moisture, keep the fuel clean, and reduce wear on the precision parts of the engine.

　　Separate the bubbles.The fuel tank can separate the air bubbles in the fuel and prevent the air bubbles from entering the engine, affecting the combustion efficiency and engine performance.

　　The structure of a fuel tank usually includes components such as the fuel tank body, fuel tank cap, fuel port, fuel pump, fuel pipeline, and fuel filter. These components work together to ensure the normal operation of the fuel system.