(19)

(11)

EP 3 938 631 A1

(12)

(43) Date of publication: 19.01.2022 Bulletin 2022/03 (21) Application number: 20801858.0 (22) Date of filing: 09.04.2020

(51) International Patent Classification (IPC):  F01P 3/02(2006.01) B60H 1/14(2006.01) F02F 1/40(2006.01) (52) Cooperative Patent Classification (CPC): F02F 2001/106; F02F 1/14; F01P 3/20; F01P 2060/02 (86) International application number: PCT/US2020/027421 (87) International publication number: WO 2020/226839 (12.11.2020 Gazette 2020/46)

(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 Designated Validation States: KH MA MD TN (30) Priority: 08.05.2019 CN 201910378607 (71) Applicant: Cummins, Inc. Columbus, Indiana 47201 (US)	(72) Inventors: LIU, Chang C. Wuhan, Hubei 430000 (CN) HASSALL, Nathaniel P. Beijing, Hebei 100125 (CN) (74) Representative: CSY Herts  Helios Court 1 Bishop Square Hatfield, Hertfordshire AL10 9NE Hatfield, Hertfordshire AL10 9NE (GB)