THE PRESENT INVENTION RELATES TO A HIGH-PRESSURE PUMP FOR SUPPLYING FUEL TO AN INTERNAL-COMBUSTION ENGINE

摘要

A high-pressure pump (1) for supplying fuel to an internal-combustion engine has a pump body (2); an actuating shaft (8), which extends along a longitudinal axis (A1), is supported rotatably about the longitudinal axis (A1) by the pump body (2) and has an eccentric portion (24) and a prismatic jacking end (27); a first pumping station (6) having a gear (10) engaged with theprismatic jacking end (27); and a second pumping station (7) with at least one piston (12) which is slidable relative to the pump body (2) transversely with respect to the longitudinal axis (A1) and is actuated by the eccentric portion (24) of the actuating shaft (8); the prismatic jacking end (27) being made of a harder material than the material with which the remainder of the actuating shaft (8) is made.