Continuous real time egt margin control

Details Continuous real time egt margin control Continuous real time egt margin control

F - Mech Eng,Light,Heat,Weapons

02

C

F02C 9/16 (2006.01) F01D 17/08 (2006.01) F01D 17/20 (2006.01) F02K 1/16 (2006.01)

Patent

CA 2581909

A method and system for maintaining a limiting gas temperature in a gas turbine engine working fluid flowpath (7) by monitoring the gas temperature and adjusting one or more parameters when the gas temperature exceeds a predetermined or a calculated temperature limit during engine operation. The parameters include one or more of a group of engine parameters including high and low pressure turbine nozzle flow areas (42, 52), fan and core flow areas (62, 72), and a rotor speed (N). The one or more parameters are adjusted to lower the gas temperature to below the temperature limit during engine operation. The limiting gas temperature may be a turbine exhaust gas temperature such as a high pressure turbine exhaust gas temperature. The turbine nozzle flow areas may be adjusted with variable nozzle vanes and the fan and core exhaust nozzle flow areas with a translatable fan nozzle cowling and a translatable core nozzle plug, respectively.

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