Fuel injector, particularly common-rail-injector for injecting fuel in combustion chamber of internal combustion engine, has nozzle needle guided between closing position and opening position

摘要

The fuel injector (1) has a nozzle needle (5) guided between closing position and opening position. The nozzle needle is adjusted in a guiding body (3), and the opening position releases fuel flow by an injection hole (9). The nozzle needle is assigned to a guiding surface (11) spaced in circumferential direction.