(19)

(11)

EP 2 635 796 A2

(12)

(88) Date of publication A3: 04.10.2012 (43) Date of publication: 11.09.2013 Bulletin 2013/37 (21) Application number: 11770842.0 (22) Date of filing: 22.09.2011

(51) International Patent Classification (IPC):  F02M 59/04(2006.01) F02M 59/26(2006.01) F02M 59/10(2006.01) F02M 59/28(2006.01) (86) International application number: PCT/FI2011/050815 (87) International publication number: WO 2012/059623 (10.05.2012 Gazette 2012/19)

(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 (30) Priority: 05.11.2010 FI 20106161 (71) Applicant: Wärtsilä Finland Oy 65380 Vaasa (FI)	(72) Inventors: NYNÄS, Håkan FI-65280 Vasa (FI) LILJENFELDT, Gösta FI-65450 Solf (FI) (74) Representative: Berggren Oy Ab  P.O. Box 16 Antinkatu 3 C 00101 Helsinki 00101 Helsinki (FI)