Nozzle needle for nozzle assembly group of fuel injector, particularly common rail injector for combustion chamber, comprises guide piston for supporting nozzle needle in nozzle body

摘要

The nozzle needle (100) comprises a guide piston (110) for supporting the nozzle needle in a nozzle body (11). The guide piston of the nozzle needle comprises a nozzle needle borehole (130) starting from its front side (111). The inner surface (131) of the nozzle needle borehole is aligned on an outer surface (231) of a pressure piston (200) for the nozzle needle. An independent claim is included for a nozzle assembly group for a fuel injector of an internal combustion engine.