Abstract: This invention relates to a Brushless DC Electric Fuel Pump (BEFP) for an internal combustion engine having a cooling system which transfers all the heat generated by its components to the heat conducting body parts and carrying the heat away not only by the fuel but also air by the use of sealed fuel channels and external heat sinks. The Brushless DC Electric Fuel Pump has a main housing, a stator within the housing, an inlet cover which fuel is drawn into, an intermediate cover and a pump body.

Abstract: Present invention relates to an electric fuel pump for an internal combustion engine in which a single-phase brushless dc motor is rotatably coupled with a roller vane or other pump mechanism so that any type of fuel or combination of fuels can be transferred from the inlet (2) to the outlet (35) of the unit which houses all above mentioned elements providing lubrication and cooling to the above mentioned elements. The fuel flow path is so designed as to provide better cooling to the commutation circuit (10) by placing the commutation circuit (10) as the first element to come into contact with fresh fuel, directing the fuel flow towards the heat sinks of the commutation circuit (10) and placing the stator coils (36) downstream of the fuel flow so that the heat generated by the stator coils (36) is taken away from the commutation circuit (10).