Patent ID: 7080631
Filing Date: 2006-07-25
Classification: F04B

Abstract:
1. A fuel injection pump comprising: a main shaft rotated by an internal combustion engine; a cam provided separately from the main shaft, the cam being formed with a connecting portion connected with the main shaft so that the cam can rotate integrally with the main shaft; a cam ring revolving around the main shaft so that the cam ring rotates with respect to the cam along an outer periphery of the cam; a housing for rotatably housing the cam and the cam ring, the housing being formed with a fuel pressurizing chamber; and a plunger reciprocating in accordance with the revolution of the cam ring to pressurize and to pressure-feed fuel, which is drawn into the fuel pressurizing chamber, wherein the connecting portion has strength lower than a damage strength of the housing, at which the housing is damaged, whereby when a force greater than said connecting portion strength blocks rotation of the cam with the main shaft, the main shaft can rotate relative to the cam substantially without the housing being damaged.