| 摘要 |
A fuel pumping arrangement 10 comprises a fuel pump 102 having a piston 106 which the motions are generated by the rotation of an eccentric cam 12 followed by a roller 110. The pumping arrangement further comprises a bearing assembly adjusted around the peripheral circular face of the eccentric cam, the bearing assembly being adapted to rotate relative to said eccentric cam and the roller being able to roll on said bearing assembly. The use of the bearing assembly and the roller is intended to mitigate against deterioration caused debris and small particles in the lubricating oil. Preferably there are a plurality of pumps uniformly distributed around the eccentric cam. |
