Patent ID: 6170763
Filing Date: 2001-01-09
Classification: F02M,Y10S

Abstract:
A fuel injector for a fuel-injection system of an internal combustion engine, the fuel injector comprising:a valve-seat member having a fixed valve seat and a lower end face;a valve-closure member cooperating with the valve-seat member and being axially movable along a longitudinal valve axis of the fuel injector; andan orifice plate situated downstream from the valve-seat member, the orifice plate having an upper functional plane and a lower functional plane, the upper functional plane having a plurality of inlet openings and a first cross-sectional orifice geometry, the lower functional plane having a plurality of outlet orifices and a second cross-sectional orifice geometry, the first cross-sectional orifice geometry being different from the second cross-sectional orifice geometry,wherein a number of the inlet openings is equal to a number of the outlet orifices,wherein only one of the outlet orifices emanates from each of the inlet openings, andwherein each of the inlet openings is partially and directly covered by the lower end face of the valve-seat member for overlapping the outlet orifices with the valve-seat member.