| 摘要 |
A fuel supply pump (1) includes a housing (11), a camshaft (14) and a cam ring (15). The camshaft (14) is rotatably supported in the housing (11). The cam ring (15) is supported around a cam portion (142) of the camshaft (14) such that the cam ring (15) is rotatable with respect to the cam portion (142). A washer member (20) is provided between an axial end face (142) of the cam portion (142) and the housing (11), so that the cam portion (142) and the camshaft (142) is axially aligned. A bearing (21) is circumferentially inserted between the end face (142) of the cam portion (142) and the cam ring (15). An axial end face (152) of the cam ring (15) defines oil grooves (153), so that lubricating oil flows from a cam chamber (13) into a gap (149), which is formed between the cam portion (142) and the bearing (21). Lubricating oil is sufficiently supplied to the periphery of the cam portion (142), so that the camshaft (14) can be protected from seizure in the fuel supply pump (1). |
