FRICTION DECREASE STRUCTURE OF AUTOMOBILE WITH FUEL PUMP

摘要

PURPOSE: A friction reducing structure of a pump part formed in a fuel pump for a vehicle is provided to reduce the current value of the motor by reducing the friction region contacting with a rotor. CONSTITUTION: A friction reducing structure of a pump part comprises a rotor(10), an upper case(20) and a lower case(30). The rotor transfers fuel to one side of a motor and a protrusion(17) is formed in the outer edge in a columnar direction. The upper case is installed in the upper part of the rotor. The fuel passes through a discharging flow path(21) using the rotor. A top reduction friction groove(22) reducing the rubbing with the rotor is formed on the inner surface of one end direction in the rotation of the rotor. The lower case is installed in the bottom part of the upper case in order to surround the lower part of the rotor. An inhalation flow path(31) is formed for the inflow of fuel. A bottom friction reduction groove(32) reducing the rubbing with the rotor is formed on the inner surface of one end direction in the rotation of the rotor.