What is the internal structure of a car fuel tank?
2 Answers
The fuel tank consists of two welded components and is stamped from lead steel. Inside the tank, there is a diaphragm to prevent fuel splashing and increase structural rigidity, which also prevents gasoline from rubbing against each other and causing combustion. The maintenance of the fuel tank is as follows: Drain accumulated water and sediment from the tank, and check for oil leaks at the fuel pipe joints and switches. For fuel tank caps equipped with air valves and steam valves, also check if their ventilation holes are clear. The filter screen at the fuel filler port should remain intact to prevent impurities from entering the tank during refueling and clogging the fuel lines. The sealing gasket of the fuel filler cap should also be intact to prevent fuel from overflowing while driving. If the owner wants to know the remaining fuel level in the tank, they can observe the fuel gauge on the right side of the instrument panel, which is marked with E and F. When the pointer is close to E, it indicates that the tank is almost empty, and when it is near F, it means the fuel level is sufficient.
I've worked with cars for many years and am quite familiar with the internal structure of the fuel tank. It has a sturdy outer shell, typically made of plastic or metal, which prevents fuel leakage and resists impacts. The fuel pump at the bottom is crucial, responsible for drawing fuel and delivering it to the engine. Above the pump, there's a filter screen that traps impurities to protect the system. At the top, there's a float sensor, like a small buoy floating on the fuel surface, which moves up and down to detect fuel levels and display them on the dashboard. The ventilation system is essential, with valves controlling pressure and releasing vapors to prevent explosion risks. Inside, splash baffles act like small barriers, reducing fuel sloshing during sharp turns or braking to minimize noise and evaporation. Fuel tank materials must be durable—plastic is lightweight, while metal offers better pressure resistance. Safety designs include automatic shut-off mechanisms in case of accidents. Remember not to leave the tank empty for too long, as this can cause the pump to overheat and fail. Regular checks of seals and vents can extend its lifespan.
