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公开(公告)号：US20190032576A1
公开(公告)日：2019-01-31
申请号：US16047089
申请日：2018-07-27
Applicant: ROLLS-ROYCE plc
Inventor： Carl L. MULDAL , Stephen P. KING , Andrew RIMELL
Abstract: A method of determining a fuel delivery fault in a gas turbine engine is provided, the engine having a combustor, a combustor fuel system for delivering fuel to the combustor, and a turbine which is driven by hot gas from the combustor. The method includes comparing a measured turbine gas temperature profile against a predicted turbine gas temperature profile. The method further includes comparing a measured combustor instability against a predicted combustor instability. The method further includes indicating that a fuel delivery fault in the combustor fuel system has been detected when both the measured turbine gas temperature profile and the measured combustor instability differ from their predicted values by more than respective predetermined thresholds.
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公开(公告)号：US20190032509A1
公开(公告)日：2019-01-31
申请号：US16047081
申请日：2018-07-27
Applicant: ROLLS-ROYCE plc
Inventor： Carl L. MULDAL , Stephen P. KING , Andrew RIMELL
Abstract: A method of determining a fuel delivery fault in a gas turbine engine is provided, the engine having a combustor, a combustor fuel system for delivering fuel to the combustor, and a turbine which is driven by hot gas from the combustor. The method includes comparing a measured turbine gas temperature profile against a predicted turbine gas temperature profile. The method further includes comparing a measured fuel delivery flow number of the combustor fuel system against a predicted fuel delivery flow number of the combustor fuel system. The method further includes indicating that a fuel delivery fault in the combustor fuel system has been detected when both the measured turbine gas temperature profile and the measured fuel delivery flow number differ from their predicted values by more than respective predetermined thresholds.
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