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AssigneeSnecma
InventorsAntoine Veyrat-Masson, Nicolas Gomes, Lauranne Mottet
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A method for detecting a failure in a fuel return valve of an aircraft engine fuel circuit, the fuel circuit including a fuel tank, an engine fuel system connected to the fuel tank capable of delivering a flow of fuel to the engine depending on a speed of the engine, a fuel return pipe connected between the engine fuel system and the fuel tank, a fuel return valve arranged to switch between an open and closed position, the valve being capable of blocking the fuel return pipe in the closed position, and of bringing the fuel return pipe into communication with the fuel tank in the open position, the method including measuring a pressure of the flow of fuel from the fuel tank, and if the measured pressure is lower than a predefined threshold, measuring the engine speed.
A method for detecting a failure of a motive flow valve of a fuel circuit of an aircraft engine, the fuel circuit including a fuel tank, a jet pump disposed in the fuel tank, an engine fuel system connected to the fuel tank, said engine fuel system being capable of delivering a fuel flow to the engine as a function of a speed of said engine, a fuel return pipe connected between the engine fuel system and the jet pump, a motive flow valve arranged to switch between an open position and a closed position, said valve being capable of blocking, in closed position, the fuel return pipe and putting, in open position, the fuel return pipe in communication with the jet pump, the method comprising the following steps performed in a calculating circuitry:
A fuel circuit of an aircraft engine, the fuel circuit comprising:
Dependencies are inferred from the claim text.