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AssigneeSociete Nationale d'Etude et de Construction de Moteurs d'Aviation "S.N.E.C.M.A."
InventorsJean-Marie Brocard, Jean-Yves Capelle, Michel Andre Albert Desaulty, Jean-Paul Perrin, Alain Michel Varizat
Estimating the term…
A device for actively controlling combustion instabilities and for decoking uel injectors comprises at least one detector for measuring pressure fluctuations in a combustion or afterburner chamber, means for processing the signal output by the detector and providing, in turn, a control voltage, and at least one piezoelectric device which is disposed in a hydraulic line including a fuel injector for the supply of fuel to the combustion or afterburner chamber and which is responsive to the control voltage to generate pulses in the flow of fuel from the outlet of the fuel injector.
A device for actively controlling combustion instabilities in a combustion chamber provided with a hydraulic line for the supply of fuel to said chamber and a fuel injector defining an injection orifice, and for decoking said fuel injector, said device comprising at least one detector for measuring pressure fluctuations in said combustion chamber and providing an output signal, means for processing said output signal from said detector and providing, in turn, a control voltage, and at least one piezoelectric device capable of ultrasonic operation disposed in said hydraulic fuel supply line for generating, in response to said control voltage, pulses in the flow of fuel from said injection orifice of said fuel injector.
A device for actively controlling combustion instabilities in an afterburner chamber provided with a hydraulic line for the supply of fuel to said chamber and a fuel injector defining an injection orifice, and for decoking said fuel injector, said device comprising at least one detector for measuring pressure fluctuations in said afterburner chamber and providing an output signal, means for processing said output signal from said detector and providing, in turn, a control voltage, and at least one piezoelectric device capable of ultrasonic operation disposed in said hydraulic fuel supply line for generating, in response to said control voltage, pulses in the flow of fuel from said injection orifice of said fuel from said injection orifice of said fuel injector.
A device for decoking a fuel injector in a combustion chamber provided with a hydraulic line for the supply of fuel, said device comprising at least one detector for measuring pressure fluctuations in said combustion chamber and providing an output signal, means for processing said output signal from said detector and providing, in turn, a control voltage, and at least one piezoelectric device disposed in said hydraulic fuel supply line for generating, in response to said control voltage, pulses in the range of ultrasonic waves in the flow of fuel from an injection orifice of said fuel injector.
Dependencies are inferred from the claim text.