IGNITION DEVICE AND METHOD FOR A TURBOMACHINE COMBUSTION CHAMBER

摘要

Ignition method for a turbomachine combustion chamber comprising an alternation between: - the admission of a fluid into a chamber (76) via an inlet opening (82), during which a piston (66) compresses elastic means (68) under the pressure of the fluid in such a way that the elastic means (68) apply, onto a piezoelectric element (64), a force strong enough that the latter induces, between electrodes (48, 58), an electric voltage allowing the generation of an electric arc, until the piston (66) reaches a predetermined closing position of a valve (72) blocking said inlet opening, and - the escape of said fluid, during which said elastic means (68) repel the piston (66) in such a way as to cause an ejection of fluid out of said chamber (76) via an exhaust opening (77), and said valve (72) is open. Device (44) to implement this method.