Pump nozzle for diesel engines

Pump nozzle for Diesel engines, in which an injection pump element comprising a pump piston (1) driven by a cam-shaft and a pump element bushing (11) is combined with an injection nozzle (8) to a unit to be associated to one motor cylinder each, wherein the pump piston (1) is surrounded by a control sleeve (12) being non-rotatable relative to the pump element bushing (11) and being adjustable in the direction of the axis of the pump piston (1) in dependence on operating parameters of the motor for the purpose of varying the beginning of injection and wherein the pump piston (1) can be rotated relative to the control sleeve (12) for the purpose of adjusting the supplied amount of fuel, characterized in that the control sleeve (12) is connected with a separating sleeve (17) surrounding the control sleeve and being non-rotatable and non-shiftable in axial direction relative to the control sleeve, said separating sleeve (17) being at both ends of the control sleeve (12) guided for being with its inner side axially shiftable on guiding surfaces (11a, 11b) of the pump element bushing (11), wherein the pump element bushing (11) includes a space (29) between the guiding surfaces (11a, 11b) for receiving the control sleeve (12), which space also forms the fuel discharge chamber, in that the separating sleeve (17) has at its end located opposite the injection nozzle (8) a hook-like protrusion (21, 22, 33) sensing a surface (23, 34) transversely extending to the axis and being at least partially inclined relative to a plane normal to the axis of the pump piston (1) and being shiftable in parallel relation to said normal plane in the direction of its inclination, and in that an adjusting force provoking the axial adjusting movement of the control sleeve (12) acts on said inclined surface (23).