Kraftstoffeinspritzventil für Brennkraftmaschinen

摘要

The invention relates to a fuel injection valve for internal combustion engines, comprising a valve member (7) which is guided into a bore hole (5) of a valve body (1) in an axially displaceable manner, and which controls the flow of the fuel by means of at least one injection opening. A guiding surface is embodied on the valve member (7), by which means said valve member can be guided into the bore hole (5) in a sliding manner. A plurality of recesses are provided in the guiding surface (23) of the valve member (7), said recesses being embodied as lubrication depots (27) and having a diameter of less than 80 µm and a depth of less than 20 µm, thus enabling friction to be reduced and a smaller guiding gap to be formed between the valve member (7) and the wall of the bore hole (5).