Patent ID: 6966499

Claim:
A fuel injector comprising: a housing having an inlet, an outlet, and a longitudinal axis extending therethrough; a seat disposed proximate the outlet, the seat having a sealing surface surrounding a seat orifice being disposed along the longitudinal axis between the sealing surface and a first channel surface; a closure member reciprocally located within the housing along the longitudinal axis between a first position displaced from the sealing surface to permit fuel flow through the seat orifice and a second position of the closure member contiguous to the sealing surface to occlude fuel flow; a metering disc including a second channel surface confronting the first channel surface at an angle oblique to the longitudinal axis, the metering disc having a plurality of metering orifices extending through the disc along the longitudinal axis, the plurality of metering orifices being located about the longitudinal axis on a first virtual circle greater than a second virtual circle defined by a projection of the sealing surface converging at a virtual apex projected on the metering disc; and a controlled velocity channel formed between the first and second channel surfaces, the controlled velocity channel having a first portion changing in cross-sectional area as the channel extends outwardly along the longitudinal axis to a location cincturing the plurality of metering orifices such that fuel flow exiting through each of the plurality of metering orifices forms a flow path oblique to the longitudinal axis.