US 11,988,143 B2
System and method for determining high oil consumption in gas turbine engine
Peter A Beecroft, Derby (GB); Dongfeng Shi, Nottingham (GB); Daniel Cutting, Nottingham (GB); and James A Cooke, Bristol (GB)
Assigned to ROLLS-ROYCE plc, London (GB)
Filed by ROLLS-ROYCE PLC, London (GB)
Filed on Sep. 13, 2021, as Appl. No. 17/473,072.
Claims priority of application No. 2015023 (GB), filed on Sep. 23, 2020.
Prior Publication US 2022/0090515 A1, Mar. 24, 2022
Int. Cl. F02C 7/06 (2006.01); F02C 9/00 (2006.01)
CPC F02C 7/06 (2013.01) [F02C 9/00 (2013.01); F05D 2260/80 (2013.01); F05D 2260/821 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for determining a high oil consumption in a gas turbine engine of an aircraft, the method comprising:
determining one or more engine and aircraft conditions, wherein the one or more engine and aircraft conditions comprises at least one of an oil quantity, an oil temperature, an oil pressure, an engine speed, an aircraft altitude, and an aircraft attitude;
determining a trend in oil conditions using the one or more engine and aircraft conditions in a regression model, wherein the trend in oil conditions provides at least one of a rate of consumption of oil or a time duration of remaining oil;
determining the high oil consumption based on a comparison of the trend in oil conditions with a threshold or a comparison model;
determining an oil starvation condition of the gas turbine engine based on the high oil consumption;
determining a power setting of the gas turbine engine to prolong a time to reach the oil starvation condition, wherein the power setting is determined at least by setting throttle to idle followed by a full range of throttle movement; and
setting the gas turbine engine to the power setting.