Importance

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Abstract

In a 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 form a unit associated to one motor cylinder each, the pump piston (1) is surrounded by a control sleeve (12) which can, for the purpose of varying the begin of fuel injection, be shifted in direction of the axis of the pump piston (1) in dependence on operating parameters of the motor, noting that the pump piston (1) is rotatable relative to the control sleeve (12) for the purpose of adjusting the supplied amount of fuel. The control sleeve (12) is connected with a separating sleeve (17) surrounding said control sleeve (12) and being guided at both sides of the control sleeve (12) with its inner side for being axially shiftable on the pump element bushing (11). The separating sleeve (17) has at its end located opposite the injection nozzle (8) a hook-like protrusion (21) sensing a surface (23) extending in transverse relation to the axis and being inclined relative to a normal plane extending in normal relation to the axis and being shiftable in parallel relating to this normal plane in direction of its inclination, noting that the adjusting force causing the axial adjusting movement of the control sleeve (12) acts on the inclined surface (23) and shifts same in the direction of its inclination.

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First Claim