Patent ID: 8122811

Claim:
A fuel injection pump comprising: a housing having a cylinder and a compression chamber; a plunger slidable in the cylinder and configured to pressurize fuel in the compression chamber; a camshaft; a cam eccentric with respect to a shaft center axis of the camshaft and integrally rotatable with the camshaft; and a sliding member slidable around an outer circumferential periphery of the cam and configured to revolve around the shaft center axis in conjunction with rotation of the camshaft, wherein the plunger is slidable on the sliding member and configured to convert the revolution into a linear movement, the cam and the sliding member are accommodated in the housing, and the sliding member has an opening through which the outer circumferential periphery of the cam is partially exposed, the opening is provided in the sliding member in a circumferential direction of the sliding member, and the opening extends through and along the sliding member, continuously from one axial end of the sliding member to an other axial end of the sliding member in a direction of the shaft center axis.