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US 7,566,356 B2Granted
Air/oil separation system and method
AssigneePratt & Whitney Canada Corp.
InventorsEric Latulipe, Richard Santerre
Life of this patent
Estimating the term…
Abstract
A centrifugal air/oil separation system communicates with bearing cavities of the engine and substantially isolates separated oil from contacting the gearbox.
Claims7
A method of lubricating an aircraft engine, comprising:
- collecting a hot air/oil mixture from a main bearing cavity of the engine;
- delivering the hot air/oil mixture directly into an air/oil separating system;
- separating liquid oil from air contained in the air/oil mixture through the air/oil separating system;
- cooling the separated liquid oil;
- and
- transferring a first amount of the cooled liquid oil into a gearbox for lubrication while transferring a second amount of the cooled liquid oil into the main bearing cavity for lubrication.
3 more elements
A method of managing lubrication oil in an aircraft engine comprising the steps of:
- providing in parallel oil from an oil source to an engine bearing cavity lubrication system and an accessory gearbox lubrication system;
- collecting spent oil from said respective systems;
- separating air from at least the oil collected from the engine bearing cavity lubrication system;
- and
- providing oil from said separating step back to said source in a manner so as to bypass accessory gearbox lubrication.
2 more elements
Dependencies are inferred from the claim text.