Patent ID: 7013864
Filing Date: 2006-03-21
Classification: F02M

Abstract:
1. A fuel injector for a direct-injection internal combustion engine, with an injection nozzle ( 2 ), having a partially spherical surface ( 3 ) and, on the circumference thereof, a plurality of injection orifices ( 5 ) lined up with one another belt-like to provide a conical jet ( 8 ) for the formation of an essentially conical fuel cloud from the individual fuel jets ( 9 ) of the respective injection orifices ( 5 ), additional injection orifices ( 5 ) arranged within the region of the spherical surface ( 3 ) of the injection nozzle ( 2 ) which is delimited by the conical jet orifice ( 6 ), and, in a circumferential region of the injection nozzle ( 2 ) which corresponds to the position of a spark plug ( 13 ) at least one injection orifice ( 17 ) which, in this circumferential region, is arranged differently from other injection orifices ( 5 ) in such a way that a fuel jet ( 9 ) emitted therefrom is oriented at a smaller angle with respect to the longitudinal axis ( 4 ) of the injector ( 1 ), so as to provide for a recess ( 12 ) in the circumference of the conical fuel jet generated by the infection nozzle ( 2 ).