IMPELLER CASE STRUCTURE WITH FUEL PUMP OF AUTOMOBILE

摘要

PURPOSE: A structure of turbine type motor fuel pump for a vehicle is provided to reduce cavitation by collision with an impeller and fuel inhaled from a fuel inlet by matching the slope of the fuel inlet prepared in the fuel intake case with the rotational direction of an impeller. CONSTITUTION: A structure of turbine type motor fuel pump for a vehicle comprises a pump unit and a motor unit. A pump unit comprises a fuel intake case(21), a fuel discharge case(22), and an impeller(23). The fuel intake case has a fuel inlet(21a) inclined within 0°~90° range. The fuel discharge case contacts the inner surface of the fuel intake case to form a pumping chamber and is formed with a fuel outlet. The impeller inhales the fuel by being rotated by the motor unit. The inlet annular duct is formed on the inner surface of the fuel intake case. A vapor hole(21e) discharging the creation of vapor of the fuel is formed on one side of the annular duct. A sealing section is formed on the inner surface of the fuel intake case.