Fuel Tank Filler Pipe

Fuel Tank Filler Pipe/Neck It is an important component of the automobile fuel system. Its main function is to connect the fuel port outside the car body and the fuel tank, and provide a channel for filling the fuel tank.

It usually consists of the following parts:
1. Filler pipe body
A metal or resin pipe extending from the fuel filler port to the fuel inlet of the fuel tank.
2. Oil filler
Located on the outside of the body, it is equipped with a fuel filler cap, which is used to open and refill fuel.
3. Flame arrester or flashback protection device
Installed in the middle of the fueling pipe to prevent flames or high-temperature gases in the fuel tank from escaping.
4. Anti-overflow valve or anti-liquid back valve
Installed at the fuel inlet to prevent fuel from overflowing from the filling pipe during bumps.
5. Ventilation line
Connects the fuel tank and the atmosphere for pressure balance in the fuel tank.

The role of the fuel tank filling pipe is very important. It not only provides a filling channel for the fuel tank, but also has the following functions:
1. Fire and explosion proof
Use devices such as flame arresters to block flames and high-temperature gases to avoid explosions.
2. Prevent fuel spillage
Use anti-overflow valves and other devices to prevent fuel from overflowing from the filling pipe when the vehicle is bumpy.
3. Good sealing performance
Ensure that fuel does not leak during refueling to avoid pollution and waste.
4. Resistant to shock and vibration
The structural design gives it good resistance to shock and vibration.

Therefore, the fuel tank filler pipe plays a key role in the safety and reliability of the automobile fuel system. Reasonable design and high-quality manufacturing are crucial to vehicle safety.