US Patent 7702447 Method and system for identifying gas turbine engine faults

Patent 7702447 was granted and assigned to United Technologies on April, 2010 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

United Technologies

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

77024470

Patent Inventor Names

Allan J. Volponi0

Date of Patent

April 20, 2010

Patent Application Number

116415660

Date Filed

December 18, 2006

Patent Primary Examiner

‌

Tuan C To

Patent abstract

An isolation method and system is described for distinguishing between turbine case cooling (TCC) and high pressure turbine (HPT) performance faults. A trend is observed in gas path parameter data during cruise and a resulting percent Δ signature across the shift in the gas path parameters is assignable to either an HPT or TCC performance fault. During either fault, exhaust gas temperature (EGT) will shift upward. Since take-off EGT margin is calculated from take-off data, the shift, or lack of shift in EGT margin may be used to differentiate between TCC and HPT faults.