Assist and back-up for electrical auxiliary drive

Details Assist and back-up for electrical auxiliary drive Assist and back-up for electrical auxiliary drive

F - Mech Eng,Light,Heat,Weapons

02

C

F02C 7/32 (2006.01) F01D 15/08 (2006.01) F01D 15/10 (2006.01) F02C 6/08 (2006.01) F02C 7/06 (2006.01) F02C 7/22 (2006.01)

Patent

CA 2434492

The invention relates to a system for driving an accessory, such as a fuel pump or an oil pump in a turboengine, said system comprising an electric motor and further comprising an air turbine associated with said electric motor. Said air turbine is suitable for being fed with a flow of air taken from a compressor of said turboengine and contributing to driving the accessory. The system also includes a valve for controlling the flow of air taken from the compressor, which valve is in the closed position while the turboengine is starting.

L'invention concerne un système d'entraînement d'un accessoire, tel qu'une pompe à carburant ou une pompe de lubrification, dans un turbomoteur , ledit système comportant un moteur électrique , caractérisé en ce qu'il comporte en outre une turbine à air associée audit moteur électrique . Ladite turbine à air est susceptible d'être alimentée par un débit d'air prélevé dans un compresseur dudit turbomoteur et participe à l'entraînement de l'accessoire. Il comporte en outre une vanne de réglage du débit d'air prélevé au compresseur qui est en position fermée lors de la phase de démarrage du turbomoteur.

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