Fuel injection valve has blind hole-like axial bore in second nozzle needle connected to valve control chamber and passing through second nozzle needle over at least two thirds of its length

摘要

The fuel injection valve has a nozzle module (3) in which moves a first nozzle needle (5) interacting with a first injection orifice (7), and a second nozzle needle (6), guided in a passage (8) passing through the first nozzle needle, and interacting with a second injection orifice (9). The second nozzle needle has a blind hole-like axial bore (26) which is connected to the valve control chamber (12). The axial bore passes through the second nozzle needle over at least two thirds of its length.