Patent ID: 7367782
Filing Date: 2008-05-06
Classification: F01C,F02M,F04B,F04C

Abstract:
1. A fuel injection pump provided with a feed pump which is attached to a housing side surface of a fuel injection pump main body and which draws fuel and supplies the same to the fuel injection pump main body, wherein the feed pump comprises a trochoid-type pump element which is rotated by a driving shaft; a pump plate disposed on one end side of the pump element in an axial direction thereof, said pump plate having, at its center, a shaft hole through which the driving shaft is inserted, and arc-shaped fuel inlet and outlet ports around the shaft hole; and a pump cover which covers the other end side of the pump element in the axial direction thereof and an outer periphery of the pump element in the radial direction thereof, said pump cover being combined with the pump plate in a liquid-tight manner, said pump cover being fastened to the housing side surface, together with the pump plate wherein said pump plate is provided with a rib that partitions at least one of the inlet and outlet ports in a circumferential direction thereof, and couples the opposite sides of the port, a space between the inlet and outlet ports and the shaft hole is imperforate, and the pump cover is fastened at an outside flange of the pump cover by threaded fasteners to the pump plate such that the pump cover covers said other end side of the pump element which is opposite to the pump plate and covers the radially outer side periphery of the pump element.