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US 8,651,240 B1Granted
Pressurized reserve lubrication system for a gas turbine engine
AssigneeUnited Technologies Corporation
InventorDavid L. Motto
Life of this patent
Estimating the term…
Abstract
A lubrication system includes a control subsystem operable to selectively communicate lubricant under gas pressure from a pressurized reserve lubricant tank in response to a prolonged reduced-G condition.
Claims20
A lubrication system, comprising:
- a main lubrication subsystem;
- a reserve lubrication subsystem including a pressurized reserve lubricant tank;
- and
- a control subsystem operable to selectively communicate lubricant under gas pressure from said pressurized reserve lubricant tank to supplement lubricant from said main lubrication subsystem in response to a sensor operable to identify a prolonged reduced-G condition.
1 more element
A lubrication system, comprising:
- a main lubrication subsystem in communication with a Fan Drive Gear System of a geared architecture gas turbine engine;
- a reserve lubrication subsystem including a pressurized reserve lubricant tank in communication with said Fan Drive Gear System;
- and
- a control subsystem operable to selectively communicate lubricant under gas pressure from said pressurized reserve lubricant tank in response to a sensor operable to identify a prolonged reduced-G condition.
1 more element
A method of reducing lubrication starvation from a lubrication system with a main lubrication subsystem and a reserve lubrication subsystem, the main lubrication system in communication with a Fan Drive Gear System of a geared architecture gas turbine engine, comprising:
- lubricating the Fan Drive Gear System by the main lubrication subsystem;
- communicating lubricant under gas pressure from the reserve lubrication subsystem to supplement the main lubrication subsystem in response to the identification of a gravitational acceleration of less than 1 G.
Dependencies are inferred from the claim text.