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
OG exemplary drawing
 
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.