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(11)

EP 4 739 898 A1

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(43) Date of publication: 13.05.2026 Bulletin 2026/20 (21) Application number: 23745231.3 (22) Date of filing: 04.07.2023

(51) International Patent Classification (IPC):  F02M 21/02(2006.01) F02M 65/00(2006.01) F02D 17/04(2006.01) F02B 63/04(2006.01) F02D 19/02(2006.01) G01M 3/28(2006.01) F02D 29/06(2006.01) (52) Cooperative Patent Classification (CPC): F02M 21/0293; F02M 65/006; F02M 21/0218; F02D 2041/225; F02D 19/025; F02B 63/04; G01M 3/2815; G01M 3/283; F02D 17/04; F02D 19/0644; F02D 29/06 (86) International application number: PCT/FI2023/050424 (87) International publication number: WO 2025/008561 (09.01.2025 Gazette 2025/02)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (71) Applicant: Wärtsilä Finland Oy 65170 Vaasa (FI)	(72) Inventors: SMEDS, Anders 65170 Vaasa (FI) MÄKINEN, Jani 65170 Vaasa (FI) (74) Representative: Berggren Oy  P.O. Box 16 Fabianinkatu 21 00101 Helsinki 00101 Helsinki (FI)