Fuel injection nozzle for internal combustion engine of motor vehicle, has coupler pistons that are coupled in initial position with maximum distance between one piston and actuator by drive coupling for traction force transmission

摘要

The nozzle has coupler pistons (21, 26) with respective coupler surfaces (22, 27), where the piston (26) is arranged relative to the piston (21) in a stroke-adjustable manner. The surface (27) is hydraulically connected with a control surface (13) and is smaller than the surface (22). A nozzle needle is supported in a nozzle body (2) for controlling injection of a fuel through an injection hole. The piston (26) is coupled with the piston (21) in an initial position with a maximum distance between the piston (26) and an actuator by a drive coupling (30) for traction force transmission.