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. 22, 2025
Filed:
Apr. 29, 2024
Pratt & Whitney Canada Corp., Longueuil, CA;
Louis Duranleau-Hendrickx, Montreal, CA;
Gabriel Meunier, Saint Bruno, CA;
Pratt & Whitney Canada Corp., Longueuil, CA;
Abstract
An apparatus comprises a combustion chamber of a gas turbine engine, a primary manifold for injecting fuel into the combustion chamber via a first plurality of nozzles and a secondary manifold for injection fuel into the combustion chamber via a second plurality of nozzles. A fuel control system provides fuel flow to the primary manifold and to the secondary manifold. The fuel control system determines at least one control parameter responsive to a first point at which the fuel flow level causes the secondary manifold to start draining and a second point at which an acceleration request is made and selects one of a plurality of secondary manifold filling profiles responsive to the determined at least one control parameter.