Method and device for adjusting a threshold value of a fuel flow rate

A non-transitory computer readable medium storing computer readable instructions thereon that when executed by a computer cause the computer to perform a method comprising:

• obtaining a first estimate of a flow rate of fuel injected into a combustion chamber of a turbine engine and as delivered by a fuel metering device of the turbine engine;
• obtaining a second estimate of the flow rate of the fuel injected into the combustion chamber of the turbine engine and as delivered by a second device of the turbine engine having a flow meter, wherein the second estimate of the flow rate of the fuel is more accurate than the first estimate of the flow rate of the fuel for at least one range of fuel flow rate values;
• adjusting a fuel flow rate threshold value to regulate the turbine engine by evaluating a difference between the first estimate of the flow rate of the fuel and the second estimate of the flow rate of the fuel;
• and
• regulating the fuel delivered to the turbine engine based on the adjusted fuel flow rate threshold value.

A device for regulating a turbine engine propelling an aircraft, the device comprising:

• circuitry configured to
• obtain a first estimate of a flow rate of fuel injected into a combustion chamber of the turbine engine and as delivered by a fuel metering device of the turbine engine,
• obtain a second estimate of the flow rate of the fuel injected into the combustion chamber of the turbine engine and as delivered by a second device of the turbine engine having a flow meter, the second estimate of the flow rate of the fuel is more accurate than the first estimate of the flow rate of the fuel for at least one range of fuel flow rate values,
• adjust a fuel flow rate threshold value by evaluating a difference between the first estimate of the flow rate of the fuel and the second estimate of the flow rate of the fuel, and
• regulate the fuel delivery to the turbine engine based on the adjusted fuel flow rate threshold value.