(19)

(11)

EP 2 847 454 A1

(12)

(43) Date of publication: 18.03.2015 Bulletin 2015/12 (21) Application number: 13723532.1 (22) Date of filing: 22.04.2013

(51) International Patent Classification (IPC):  F02N 7/08(2006.01) F02D 41/20(2006.01) (86) International application number: PCT/FI2013/050444 (87) International publication number: WO 2013/167795 (14.11.2013 Gazette 2013/46)

(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: 10.05.2012 FI 20125501 (71) Applicant: Wärtsilä Finland Oy 65380 Vaasa (FI)	(72) Inventors: CALCINOTTO, Paolo IT-34018 Trieste (IT) DAPINGUENTE, Marino IT-34018 Trieste (IT) (74) Representative: Berggren Oy Ab  P.O. Box 16 Antinkatu 3 C 00101 Helsinki 00101 Helsinki (FI)