SUPPLY PUMP

摘要

A supply pump which can reduce the machining man-hour and the machining cost while maintaining small dimensions. The supply pump (1) comprises a plunger barrel (3), a plunger (4) provided reciprocally in the plunger barrel (3), a pressurization chamber (25) formed between the plunger barrel (3) and the plunger (4), a first suction port (41) and a second suction port (42) through which fuel can be sucked into the pressurization chamber (25), and a fuel delivery passage (32) for delivering fuel from the pressurization chamber (25). In the supply pump (1), at a position where the plunger (4) is at the bottom dead center, the second suction port (42) provided in the plunger barrel (3) in the direction intersecting the central axis direction of the plunger (4) substantially perpendicularly, and an annular groove (51) provided in the inner circumferential surface of the plunger barrel (3) communicate with the pressurization chamber (25).