FUEL INJECTOR

DRIVE November 23, 2016
Source
The invention relates to a fuel injector for injecting fuel into a combustion chamber (1) of an internal combustion engine, comprising a nozzle needle (2) which is received in a stroke-wise movable manner for releasing and closing at least one injection opening (3) in a high-pressure bore (4) of a nozzle body (5), further comprising an annular magnetic coil (6) for acting upon a stroke-wise movable armature (7) which is hydraulically couplable to the nozzle needle (2) via an armature shaft (8). According to the invention, a spring plate (9) firmly connected to the armature shaft (8) or a stroke-wise movable damping element (10) mechanically couplable to the spring plate (9) has an end face (11, 12) facing the nozzle needle (2) which cooperates with a stop surface (13, 14) serving as a lower stroke stop for the armature (7) and/or the damping element (10) to form a squeeze gap (15).

Discussion in the ATmosphere

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