Injector for a fuel injection system of an internal combustion engine comprises a first coupler chamber defined by a first coupler surface of a coupler piston and a first control surface with a smaller surface than the first coupler surface

摘要

Injector (1) for a fuel injection system of an internal combustion engine comprises a coupler piston (12) with a first coupler surface (17) facing an injection hole (5) in an injector body (2), and a first coupler chamber (18) defined by the first coupler surface and a first control surface (19) facing away from the injection hole on a nozzle needle (8) or on a needle structure (20) and having a smaller surface than the first coupler surface. Preferred Features: The nozzle needle or the needle structure has an end section (21) with the first control surface that is adjustably mounted in a through opening (28).