(19)

(11)

EP 2 710 253 A1

(12)

(43) Date of publication: 26.03.2014 Bulletin 2014/13 (21) Application number: 12726142.8 (22) Date of filing: 11.05.2012

(51) International Patent Classification (IPC):  F02N 9/04(2006.01) F01L 1/46(2006.01) F01L 1/08(2006.01) (86) International application number: PCT/FI2012/050455 (87) International publication number: WO 2012/156584 (22.11.2012 Gazette 2012/47)

(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: 17.05.2011 FI 20115471 (71) Applicant: Wärtsilä Finland Oy 65380 Vaasa (FI)	(72) Inventor: SUNDSTEN, Magnus FI-65610 Korsholm (FI) (74) Representative: Berggren Oy Ab  P.O. Box 16 Antinkatu 3 C 00101 Helsinki 00101 Helsinki (FI)