F - Mech Eng,Light,Heat,Weapons – 01 – D
Patent
F - Mech Eng,Light,Heat,Weapons
01
D
F01D 21/00 (2006.01) F02C 7/236 (2006.01) F02C 7/32 (2006.01) F02C 9/46 (2006.01)
Patent
CA 2762301
The invention relates to a device for detecting a fault in a low-pressure fuel pump of a turbojet. The pump is driven by means of an accessory gearbox (4) including a gear (4') for mechanically driving the accessories. The device includes means (27) for measuring the vibration frequencies of the accessory gearbox (4) and means (28) for detecting, from among said frequencies, at least one vibration frequency of the low-pressure fuel pump. The invention allows a fault in the low-pressure fuel pump to be detected as soon as it occurs.
L'invention concerne un dispositif de détection d'une défaillance d'une pompe à carburant basse pression d'un turboréacteur. La pompe est entraînée par l'intermédiaire d'un boîtier de relais d'accessoires (4) comprenant un engrenage (4') d'entraînement mécanique desdits accessoires. Le dispositif comporte des moyens (27) de mesure de fréquences de vibration du boîtier de relais d'accessoires (4) et des moyens (28) de détection, parmi lesdites fréquences, d'au moins une fréquence de vibration de la pompe à carburant basse pression. Grâce à l'invention, une défaillance de la pompe à carburant basse pression peut être détectée dès sa survenance.
Goudreau Gage Dubuc
Snecma
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