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:
Oct. 10, 2023
Filed:
Aug. 02, 2022
Applicant:
Raytheon Technologies Corporation, Farmington, CT (US);
Inventors:
Peter Cocks, South Glastonbury, CT (US);
Michael K. Ikeda, West Hartford, CT (US);
Assignee:
RTX CORPORATION, Farmington, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02C 7/236 (2006.01); F02C 3/13 (2006.01); F02C 7/36 (2006.01); F02C 9/26 (2006.01); F04D 13/06 (2006.01);
U.S. Cl.
CPC ...
F02C 7/236 (2013.01); F02C 3/13 (2013.01); F02C 7/36 (2013.01); F02C 9/26 (2013.01); F04D 13/06 (2013.01); F05D 2220/32 (2013.01); F05D 2240/35 (2013.01); F23K 2203/20 (2013.01);
Abstract
A fuel system for a gas turbine engine includes a main fuel pump generating a main fuel flow into a main fuel passage and a secondary pump generating a secondary fuel flow into a secondary flow passage. A first control valve is disposed in a passage between the main fuel passage and the secondary flow passage. The first control valve selectively directs an excess portion of the main fuel flow to the secondary flow passage to provide at least a portion of the secondary fuel flow.