| US 7,566,356 B2 | ||
| Air/oil separation system and method | ||
| Eric Latulipe, Longueuil (Canada); and Richard Santerre, Brossard (Canada) | ||
| Assigned to Pratt & Whitney Canada Corp., Longueuil, Quebec (Canada) | ||
| Filed on Apr. 19, 2006, as Appl. No. 11/406,355. | ||
| Application 11/406355 is a division of application No. 10/806275, filed on Mar. 23, 2004, granted, now 7,063,734. | ||
| Prior Publication US 2006/0248865 A1, Nov. 09, 2006 | ||
| Int. Cl. F02C 7/06 (2006.01); B01D 46/00 (2006.01) | ||
| U.S. Cl. 55—400 [55/428; 60/39.08; 184/6.24] | 7 Claims |

| 1. 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.
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