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(11)

EP 2 699 805 A1

(12)

(43) Date of publication: 26.02.2014 Bulletin 2014/09 (21) Application number: 12721884.0 (22) Date of filing: 19.04.2012

(51) International Patent Classification (IPC):  F15B 11/032(2006.01) F02M 57/02(2006.01) F01L 9/02(2006.01) (86) International application number: PCT/FI2012/050388 (87) International publication number: WO 2012/143614 (26.10.2012 Gazette 2012/43)

(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: 21.04.2011 FI 20115392 (71) Applicant: Wärtsilä Finland Oy 65380 Vaasa (FI)	(72) Inventors: KALLIO, Ilari FI-65300 Vaasa (FI) LILLHANNUS, Johan FI-02150 Espoo (FI) JUSSILA, Sami FI-65350 Vaasa (FI) (74) Representative: Berggren Oy Ab  P.O. Box 16 Antinkatu 3 C 00101 Helsinki 00101 Helsinki (FI)