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:
Jan. 08, 2019
Filed:
Feb. 12, 2016
Applicant:
United Technologies Corporation, Farmington, CT (US);
Inventors:
Frederick M. Schwarz, Glastonbury, CT (US);
Amy R. Grace, Ellington, CT (US);
Assignee:
UNITED TECHNOLOGIES CORPORATION, Farmington, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02C 7/26 (2006.01); F02C 7/268 (2006.01); F01D 25/36 (2006.01); F02C 3/04 (2006.01); F02C 9/00 (2006.01); F01D 19/02 (2006.01); G01H 1/00 (2006.01);
U.S. Cl.
CPC ...
F02C 7/26 (2013.01); F01D 19/02 (2013.01); F01D 25/36 (2013.01); F02C 3/04 (2013.01); F02C 7/268 (2013.01); F02C 9/00 (2013.01); G01H 1/003 (2013.01); F05D 2220/323 (2013.01); F05D 2260/85 (2013.01); F05D 2260/941 (2013.01); F05D 2270/54 (2013.01);
Abstract
A bowed rotor start mitigation system for a gas turbine engine is provided. The bow rotor start mitigation system includes a controller operable to receive a speed input indicative of a rotor speed of the gas turbine engine and a measured temperature of the gas turbine engine. The controller is further operable to drive motoring of the gas turbine engine by oscillating the rotor speed within a motoring band for a motoring time based on the measured temperature when a start sequence of the gas turbine engine is initiated.