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:
Jun. 28, 2022
Filed:
Jun. 16, 2020
Applicant:
Rolls-royce Plc, London, GB;
Inventors:
Mario Di Martino, Derby, GB;
Conor M Raynor, Derby, GB;
Assignee:
ROLLS-ROYCE plc, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02C 7/228 (2006.01); F02C 7/22 (2006.01); F02C 7/232 (2006.01); F23R 3/34 (2006.01); F23R 3/28 (2006.01);
U.S. Cl.
CPC ...
F02C 7/228 (2013.01); F02C 7/222 (2013.01); F02C 7/232 (2013.01); F23R 3/283 (2013.01); F23R 3/343 (2013.01); F05D 2220/323 (2013.01); F05D 2240/35 (2013.01); F05D 2260/232 (2013.01);
Abstract
A fuel staging system for a gas turbine engine has a plurality of fuel injectors each having a mains burner. The system has a mains manifold connected to a mains delivery line and configured to distribute fuel from the mains delivery line to the mains burner of each of the plurality of fuel injectors, and a check valve disposed in the mains delivery line upstream of the mains manifold. The check valve is configured to permit flow of fuel from the mains delivery line to the mains manifold when the pressure of fuel in the mains delivery line exceeds a threshold pressure.