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:
Jul. 19, 2022
Filed:
May. 11, 2020
Pratt & Whitney Canada Corp., Longueuil, CA;
Cédric Saintignan, Montreal, CA;
Joseph Daniel Maxim Cirtwill, Gravenhurst, CA;
Kian McCaldon, Orangeville, CA;
Marc-André Tremblay, Montreal, CA;
David Waddleton, Candiac, CA;
Ignazio Broccolini, Montreal, CA;
Stephen Tarling, Pointe-Claire, CA;
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Abstract
Methods and systems of operating a gas turbine engine in a low-power condition are provided. In one embodiment, the method includes supplying fuel to the combustor by supplying fuel to the first fuel manifold via a first flow divider valve and supplying fuel to the second fuel manifold via a second flow divider valve. While supplying fuel to the combustor by supplying fuel to the first fuel manifold, the method includes stopping supplying fuel to the second fuel manifold and supplying pressurized gas to the second fuel manifold via the second flow divider valve to flush fuel in the second fuel manifold into the combustor and hinder coking in the second fuel manifold and associated nozzles.