Parker-hannifin Corporation

Michael Kenneth Teter

Robert R Pelletier

Adel B Mansour

Erlendur Steinthorsson

Raman Ras

Michael Peter Wrubel

Brian P Hollon

Charles Raymond Bovard

Jeffery R Lehtinen

Provided is an injector () having a plurality of injector modules () that include a spray cup having a chamber and a plurality of radial air passages for directing air radially into the chamber, and a pressure swirl atomizer attached to the spray cup and having a fluid passage for directing fluid axially into chamber and an air passage for directing air axially into the chamber. By providing radial and axial air flow and axial fuel flow into the chamber, the fuel may be mixed to prevent local hot spots that lead to high NOx emissions, and a stable flame may be maintained without autoignition and flashback. The axial air flow also prevents recirculation zones from forming at a base of the spray cup, provides improved atomization and enhanced combustion.

Direct injection multipoint nozzle

Provided is a fuel manifold with more than one fuel circuit for connecting a fuel source or fuel sources to at least one fuel injector, the fuel manifold having an inner tube for conveying fuel through a first fuel passage formed interiorly of the inner tube and an outer tube forming with a slot along a length of the inner tube a second fuel passage. If one of the fuel passages is in a low flow or no flow condition, fuel flowing through the other of the fuel passages acts to cool the fuel passage in the low flow or no flow condition to prevent stagnant fuel in the passage from heating up and coking.

Multiple circuit fuel manifold

An airblast fuel nozzle assembly () comprising a sleeve structure having a series of coaxial sleeves forming an inner-air circuit, an outer-air circuit, a main-fuel-feed circuit, and a pilot-fuel-feed circuit. The pilot-fuel-feed circuit includes a channel (), and a discharge region () with exits (). The exits () have a combined cross-sectional area that is substantially less than the cross-sectional area of the channel () upstream of the discharge region (). In this manner, the pilot-fuel-feed circuit itself can provide a relatively large pressure drop across the channel region (), and thereby assist in self atomization during ignition stages of engine operation.

Airblast fuel nozzle assembly

A fuel injector nozzle for dispensing fuel in the combustion chamber of a gas turbine engine, comprises a fluid feed conduit having at least one internal channel for the passage of fluid from an inlet end to an outlet end of the fluid feed conduit. The fluid feed conduit has a first annular segment receiving fluid from the inlet end and a second annular segment fluidly connected to receive fluid from the first annular segment at a junction having a circumferential length less than the circumferential lengths of the first and second annular segments. The second annular segment includes fluid dispensing openings to dispense fluid from the conduit, and the first and second annular segments are coaxial and axially separated for relative movement over a major portion of the second segment to accommodate differential thermal expansion.

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Chardon, OH, United States of America

Michael Kenneth Teter