How they work

Fuelpump Functioning UK

The location of an in-tank Fuel Pump helps to reduce noise produced by the electric fuel pump motor. It also keeps the pump supplied with fuel, lubricating and cooling the pump motor.

When the impeller of an in-tank Fuel Pump rotates, the blade moves around the impeller, creating a swirling motion inside the pump to deliver fuel. The fuel then passes around the motor, forcing the check valve upwards to supply fuel to the fuel pipe. Due to the use of engines with large cylinder displacement, Fuel Pumps with greater capacities are increasingly needed. The discharge volume of these pumps must therefore be controlled to suit the operating conditions of the engine. This is made possible by the turbine technology of in-tank Fuel Pumps.