ELECTRIC MOTOR DRIVEN AUXILIARY OIL SYSTEM FOR GEARED GAS TURBINE ENGINE

Abstract: a gas turbine engine includes a fan drive turbine, a fan rotor, and a gear reduction driven by the fan drive turbine and, in turn, to drive the fan rotor. a main oil supply system supplies oil to components within the gear reduction, and an auxiliary oil supply system. the auxiliary oil supply system includes a rotation sensor for sensing rotation of a component that will rotate with the fan rotor, a control, an auxiliary oil pump, and a main supply sensor for sensing operation of the main oil supply system. the control is programmed to supply oil from the auxiliary oil pump to the gear reduction when the rotation sensor senses the component is rotating. a determination is made that inadequate oil is being supplied from the main oil supply system based upon information from the main supply sensor.

Inventor(s): William G. Sheridan

CPC Classification: F16H57/0442 (Features relating to lubrication or cooling {or heating} ({in hydrokinetic gearing ; } control of lubrication or cooling in hydrostatic gearing ))

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