ABSTRACT
Plastic fuel tank. These are moulded from various proprietary plastic materials. They may be protected against impact damage by the use of external steel plates.
The filler cap is designed to allow ease of access for refuelling and to prevent the escape of fuel when the vehicle is in use. The neck of the fuel tank contains a valve that is opened when the fuel supply hose is inserted e the purpose of this valve is to prevent fuel ‘blowing back’ during the refuelling process. In, or close to, the neck is placed a pipe that connects
to the carbon canister so that vapour can be taken away from the tank and processed in the engine. The fuel tank sender unit is the sensor that transmits
an electrical signal to the fuel gauge to provide a reasonably accurate measure of the amount of fuel in the tank.
