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US 7,546,740 B2Granted
Nozzle
AssigneeUnited Technologies Corporation
InventorsAlexander G. Chen, Jeffrey M. Cohen
Life of this patent
Estimating the term…
Abstract
A fuel injector has a number of groups of nozzles. The groups are generally concentric with an injector axis. Each nozzle defines a gas flowpath having an outlet for discharging a fuel/air mixture jet. There are means for introducing the fuel to the air. One or more groups of the nozzles are oriented to direct the associated jets skew to the injector axis.
Claims21
A fuel injector apparatus comprising:
- a plurality of rings of nozzles, the rings being coaxial with an injector axis, each nozzle defining a gas flow path having an outlet for discharging a fuel/air mixture jet;
- and means for introducing said fuel to said air, wherein one or more groups of the nozzles are oriented to direct the associated jets along axes non-coplanar, non-intersecting, and non-parallel to the injector axis.
A method for engineering a fuel injector apparatus, the apparatus comprising:
- a plurality of rings of nozzles, the rings being coaxial with an injector axis, each nozzle defining a gas flow path having an outlet for discharging a fuel/air mixture jet;
- and means for introducing said fuel to said air, wherein one or more groups of the nozzles are oriented to direct the associated jets along axes non-coplanar, non-intersecting, and non-parallel to the injector axis.
- the method comprising iteratively:
- selecting one or more off-longitudinal orientations for respective groups of the one or more groups;
- and determining at least one performance factor associated with the selected one or more off-longitudinal orientations, so as to achieve a selected performance.
2 more elements
A fuel injector apparatus comprising:
- a plurality of nozzles, each defining a gas flow path having:
- an inlet receiving air;
- a port receiving fuel;
- and
- an outlet discharging a fuel/air mixture jet;
- and wherein one or more groups of the nozzles are oriented to direct the associated jets partially tangentially to a circumference coaxial with an overall flowpath from the injector.
3 more elements
Dependencies are inferred from the claim text.