The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 01, 2023
Filed:
May. 29, 2019
Applicant:
Pratt & Whitney Canada Corp., Longueuil, CA;
Inventors:
James Jarvo, Saint-Bruno, CA;
Patrick Manoukian, Saint-Laurent, CA;
Philippe Beauchesne-Martel, Brossard, CA;
Assignee:
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02C 9/28 (2006.01); F02C 7/22 (2006.01);
U.S. Cl.
CPC ...
F02C 9/28 (2013.01); F02C 7/222 (2013.01); F05D 2220/32 (2013.01); F05D 2270/3032 (2013.01);
Abstract
Systems and methods for operating an engine are described herein. The engine is operated at low power by supplying fuel to a combustor through a first set of fuel nozzles of at least one first manifold and without supplying fuel to the combustor through a second set of fuel nozzles of at least one second manifold. An amount of fuel to at least in part fill the at least one second manifold to impede fuel coking of the second set of fuel nozzles is determined. The amount of fuel is periodically supplied to the at least one second manifold.