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US 2009/0255258 A1Published application
Pre-filming air-blast fuel injector having a reduced hydraulic spray angle
AssigneeDelavan Inc.
InventorsDavid H. Bretz, Spencer D. Pack
Life of this patent
Estimating the term…
Abstract
An air-blast fuel injector is disclosed that includes an on-axis inner air circuit, a fuel circuit radially outboard of the inner air circuit, the fuel circuit having an axially converging pre-filming chamber and an axially diverging pre-filming surface extending from the pre-filming chamber to an exit annulus and an outer air circuit radially outboard of the fuel circuit communicating with the exit annulus of the axially diverging pre-filming surface.
Claims26
An air-blast fuel injector comprising:
- a) an on-axis inner air circuit;
- b) a fuel circuit radially outboard of the inner air circuit, the fuel circuit having an axially converging pre-filming chamber and an axially diverging pre-filming surface extending from the pre-filming chamber to an exit annulus;
- and
- c) an outer air circuit radially outboard of the fuel circuit communicating with the exit annulus of the axially diverging pre-filming surface.
1 more element
An air-blast fuel injector comprising:
- a nozzle body assembly defining a longitudinal axis and having a fuel swirler, wherein the fuel swirler communicates with a conical pre-filming chamber, wherein the pre-filming chamber communicates with a radially expanding pre-filming surface, and wherein the pre-filming surface extends axially from the pre-filming chamber to an exit lip.
Dependencies are inferred from the claim text.