(19)

(11)

EP 2 914 819 A2

(12)

(88) Date of publication A3: 16.10.2014 (43) Date of publication: 09.09.2015 Bulletin 2015/37 (21) Application number: 13874213.5 (22) Date of filing: 01.11.2013

(51) International Patent Classification (IPC):  F01D 25/12(2006.01) F01D 11/00(2006.01) F02C 7/12(2006.01) F04D 29/58(2006.01) (86) International application number: PCT/US2013/068053 (87) International publication number: WO 2014/120309 (07.08.2014 Gazette 2014/32)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME (30) Priority: 01.11.2012 US 201213666591 (71) Applicant: United Technologies Corporation Hartford, CT 06101 (US)

(72) Inventors: LYLE, Stephen J. Avon, Connecticut 06092 (US) MUTSENGI, Fungayi Bloomfield, Connecticut 06002 (US) BORATGIS, Ernest South Windsor, Connecticut 06074 (US) RANGANATH, Santosh Glastonbury, Connecticut 06033 (US) LARSON, Christopher J. Newfield, Maine 04056 (US) ULLAH, M Rifat South Windsor, Connecticut 06074 (US) (74) Representative: Gittins, Alex Michael  Dehns St Bride's House 10 Salisbury Square London EC4Y 8JD London EC4Y 8JD (GB)