| 摘要 |
A fuel injector (1) for fuel injection systems of internal combustion engines includes a valve needle (3) and a valve closing body (4), which is operationally linked to it and cooperates with a valve seat face (6) situated in a valve seat body (5) to form a sealing seat. Upstream from the sealing seat there is at least one swirl channel (32), which has a tangential component relative to the longitudinal axis (33) of the fuel injector (1). An axial channel (35), which is formed between the valve closing body (4) and the guide recess (34) of the valve seat body (5), has an axial component relative to the longitudinal axis (33) of the fuel injector (1), the axial channel (35) being formed between the guide recess (34) and at least one flattened area (37) on the valve needle (3).
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