Honeywell International Inc.

Matthew Christopher

Jim E Delaloye

Hanif Vhora

A system and method are provided for controlling an electric motor driven lubrication supply pump that is supplied with electrical power from a power bus, and that supplies lubricant to a rotating machine that is at least part of a vehicle subsystem. A determination is made that the subsystem is being started-up. Moreover, one or more lubricant parameters, power bus electrical state, and one or more lubricant load states are determined. The electrical power supplied from the power bus to the electric motor is varied, based on the one or more lubricant parameters, the power bus electrical state, and the one or more lubricant load states.

Electric motor driven lubrication pump startup control system and method

A system and method are provided to selectively control lubricant supply flow to a rotating machine that is installed in an aircraft having ram air turbine that is movable between at least a deployed position and a stowed position. A controller determines at least when the ram air turbine is in the deployed position, and determining when rotational speed of the rotating machine exceeds a predetermined value. The electric motor driven lubrication pump is at least selectively energized to control the measured lubricant pressure to a predetermined minimum pressure at least when the ram air turbine is deployed and the rotational speed exceeds the predetermined value.

Electric motor driven lubrication pump control system and method for turbomachine windmill operation

Methods and apparatus are provided for detecting a flameout of an operating turbomachine that is configured to receive a controlled flow of bleed air from a bleed air source and a controlled flow of fuel from a fuel source. A value of an operational parameter within the turbomachine is detected and a determination is made as to whether it has varied by a predetermined amount. If the operational parameter has varied by the predetermined amount, a flameout confirmation test is triggered. The flameout confirmation test includes holding the controlled flow of bleed air constant, commanding an increase in turbomachine speed, and confirming that a flameout has occurred by detecting that the controlled fuel flow to the turbomachine is at a maximum fuel flow limit and that actual turbomachine speed differs from the commanded turbomachine speed by a predetermined speed error.

Growing community of inventors

Phoenix, AZ, United States of America

Matthew Christopher