(19)
(11) EP 2 039 891 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
03.11.2010 Bulletin 2010/44

(43) Date of publication A2:
25.03.2009 Bulletin 2009/13

(21) Application number: 08158348.6

(22) Date of filing: 16.06.2008
(51) International Patent Classification (IPC): 
F01D 25/18(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA MK RS

(30) Priority: 20.09.2007 US 858738

(71) Applicant: Honeywell International Inc.
Morristown, NJ 07960 (US)

(72) Inventor:
  • DeLaloye, Jim E.
    Mesa, AZ 85209 (US)

(74) Representative: Buckley, Guy Julian 
Patent Outsourcing Limited 1 King Street
Bakewell Derbyshire DE45 1DZ
Bakewell Derbyshire DE45 1DZ (GB)

   


(54) Electric motor driven lubrication supply system of a gas turbine and method


(57) A system and method for controlling lubricant displacement from a lubrication system and a rotating machine includes supplying a gaseous fluid to the lubrication supply system to displace the lubricant. The gaseous fluid is preferentially directed through a first section of the lubrication supply system and to the rotating machine, and is at least inhibited from flowing through a second section of the lubrication supply system. As a result, the gascous fluid displaces the lubricant in the rotating machine and in the first section of the lubrication supply system, while the second section of the lubrication supply system remains at least substantially full of lubricant.







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