FUEL STAGING

摘要

A fuel injector (100) includes a feed arm (102) with an inlet end (104) and a nozzle body (106) extending from the feed arm (102) at an end opposite the inlet end (104). The nozzle body (106) defines a prefilming chamber (108) that opens into an annular outlet orifice (110) for issuing a spray therefrom. A plurality of fuel circuits (112) is defined from the inlet end (104) of the feed arm (102) to the prefilming chamber (108) of the nozzle body (106). Each fuel circuit in the plurality of fuel circuits (112) can include a single respective inlet opening at the inlet end (104) of the feed arm (102), with a single respective conduit extending through the feed arm (102) and nozzle body (106) from the single respective inlet opening to a single respective outlet slot feeding into the prefilming chamber (108).