FUEL INJECTION DEVICE FOR A DIESEL ENGINE
A fuel pump (3) comprises a piston (7) which is adjustable by rotation. The pump (3) is actuated by an axial piston system (20) on which acts a fluid pressure means, and the piston (7) of the pump can undergo rotation around the axes (8) imposed by an operating device (60). In the pressure fluid circuit, a regulating device (31) adjusts the admission and delivery of the pressure fluid for the twin-action axial piston (22) of the axial piston system (20). The pulse for the start of the piston injection travel is sent to the regulating device (31) by an electric pulse generator (40) or by a camshaft. A return piston (34) on the regulating device (31) is operated by the fuel and is linked by a pipeline (33) with the pump chamber. Towards the end of the injection travel, a control edge (12) leaves open a passageway (14), and a pressure surge acts by means of the pipeline (33) on the return piston (34).