Brief description of the detection of a failure of a valve of the return of fuel to a fuel circuit of an engine of a 371

摘要

The present invention relates to a method of detecting a failure of a valve of the return of fuel to a fuel circuit of an engine of an aircraft, the fuel circuit comprising a fuel tank; a system for engine fuel is connected to the fuel tank, said system engine fuel being adapted to deliver a flow of fuel to the engine as a function of a speed of the motor, a conduit for return of fuel that is connected between the engine fuel and the fuel tank; a return valve which fuel is arranged to switch between an open position and a closed position, said valve being able to block, in the closed position, the conduit for return of fuel and to put into communication, in the open position, the return pipe of the fuel with the fuel tank; the method comprising the following steps, implemented in a computer: starting the engine of the aircraft so as to increase the speed of the engine of the speed of zero to a minimum idling rate no; and during the increase of the motor speed measurement, for several values of the engine speed or, to a temperature t 1 corresponding to the flow of fuel from the fuel tank.