Fuel injection pump for internal combustion engines

Claim 1

A fuel injection pump for internal combustion engines, having a cylinder liner (2), disposed in a longitudinal bore (3) of a pump housing (1), a reciprocating pump piston (4) which defines a pump work chamber, in which a high-pressure fuel pumping is controlled, a filling and relief conduit, (17, 20, 21) of the pump piston (4) which discharges at a circumference of the pump piston, a control slide (5) that cooperates with the filling and relief conduit, said control slide is axially adjustable on the pump piston (4), and is located inside a lateral, substantially cylindrical recess in the cylinder liner (2) that forms a partial suction chamber (11), the control slide (5) being moved by an adjusting shaft (7), said adjusting shaft is disposed in a transverse conduit (6) in the pump housing (1) that extends transversely to the longitudinal bore (3) and intersects the longitudinal bore, forming a lateral through opening (16), the control slide movement taking place via a lever (8) that protrudes through the lateral opening (16) into the cylinder liner (2) in the region of the partial suction chamber (11), a diameter of the transverse conduit (6) is smaller than an axial length of the partial suction chamber (11), and a tub-like cross-sectional transition is formed between the longitudinal bore (3) and the transverse conduit (6), and on the control slide (5), a chamfer (12) toward the pump work chamber is provided, a slope of the chamfer (12) preferably corresponds to an oblique course, rising toward the longitudinal bore (30, toward the pump work chamber, of the cross-sectional transition of the lateral through opening (16).