Closed loop fuel control system and method

Details Closed loop fuel control system and method Closed loop fuel control system and method

F - Mech Eng,Light,Heat,Weapons

02

C

F02C 9/28 (2006.01) F02C 7/262 (2006.01) F02C 7/27 (2006.01)

Patent

CA 2119246

A fuel control system (100) for accurately controlling the fuel flow rate to a gas turbine engine (10) during the initial stages of startup is provided. The fuel control system has a novel, closed control loop that measures the actual fuel flow rate to the pri- mary nozzles (22) of the engine (10), and uses this measurement to trim the commanded fuel flow rate signal generated by prepro- grammed schedules in the engine's electronic control unit (80). By the novel arrangement of proportional (114) and integral (118) controllers, the fuel control system (100) maintains a forward path gain of unity while permitting the independent adjustment of the gain of the controllers to achieve the system stability and response necessary for quick correction of fuel flow rate errors.

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