Method and system to ensure full oil tubes after gas turbine engine shutdown
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United States of America Patent
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Jul 14, 2020
Grant Date -
Oct 25, 2018
app pub date -
Apr 24, 2017
filing date -
Apr 24, 2017
priority date (Note) -
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Abstract
A gas turbine engine includes a bearing compartment that has an inlet. A supply line splits into a supply conduit and a reservoir conduit that are fluidly parallel to one another for a length. The reservoir conduit fluidly rejoins the supply conduit at a junction. The supply conduit is fluidly connected to the inlet, and the reservoir conduit includes a flow restrictor upstream from the junction. A main pump is fluidly connected to the supply line and is configured to supply a lubricant to the bearing compartment through the supply line and supply and reservoir conduits in an operating state. The main pump has a non-operating state in which the reservoir conduit is configured to slowly refill the supply conduit through the flow restrictor.
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