Method for producing recess in nozzle body of injection valve used for dosing fuel into combustion chamber of cylinder of diesel engine of motor car, involves forming recesses by deformation bodies under plastic deformation of nozzle body

摘要

The method involves providing a nozzle body (12) and cylindrical deformation bodies (50, 50a). The deformation bodies and the nozzle body are moved relative to each other so that recesses (40, 40a) are formed in the nozzle body by the deformation bodies under plastic deformation of the nozzle body. The deformation bodies are removed from the recesses. The plastic deformation of the nozzle body is carried out by a cold extrusion process. One of the deformation bodies (50a) is provided with a cross-section so that one of the deformation bodies (50a) is inserted into the formed recesses. An independent claim is also included for a device for producing a recess in a nozzle body of an injection valve.