Fuel Injector For High Flame Speed Fuel Combustion

摘要

A multiple fuel capable, pre-mixed, low emission injector is provided which is particularly suited for burning high flame speed fuels. The fuel injector includes an injector body having a preliminary pre-mixing chamber, an intermediate pre-mixing chamber and a final pre-mixing chamber. A fuel distributor separates the preliminary pre-mixing chamber from the intermediate pre-mixing chamber. A guide vane separates the intermediate pre-mixing chamber from the final pre-mixing chamber.

主权项

1. A fuel injector apparatus, comprising:
an elongated tubular injector body having an inlet end and an outlet end, the body having an inner wall defining an interior, the inner wall having one or more near-wall layer air injection ports defined therein; and a guide vane separating a final mixing chamber adjacent the outlet end from one or more pre-mixing chambers upstream of the guide vane, the guide vane including:
a non-perforated lateral vane portion attached to the inner wall upstream of the one or more near-wall layer air injection ports and extending laterally inward; andan axial vane portion extending downstream from the lateral vane portion and defining an axially central flow passage for all fuel-air mixture from the one or more pre-mixing chambers, the axial vane portion and the inner wall defining an injection annulus downstream of the lateral vane portion, the one or more near-wall layer air injection ports opening into the injection annulus.