(19)

(11)

EP 3 844 381 A1

(12)

(43) Date of publication: 07.07.2021 Bulletin 2021/27 (21) Application number: 19765188.8 (22) Date of filing: 28.08.2019

(51) International Patent Classification (IPC):  F02N 11/08(2006.01) (86) International application number: PCT/EP2019/072963 (87) International publication number: WO 2020/043775 (05.03.2020 Gazette 2020/10)

(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: 28.08.2018 CN 201810987278 (71) Applicant: Robert Bosch GmbH 70442 Stuttgart (DE)	(72) Inventors: CHEN, Yong Wuxi, Jiangsu 214028 (CN) SUN, Ziyi Wuxi, Jiangsu 214028 (CN) WU, Emily Wuxi, Jiangsu 214028 (CN) FENG, Qifeng Wuxi, Jiangsu 214028 (CN) ZHANG, Fan Wuxi, Jiangsu 214028 (CN) XU, Shufang Wuxi, Jiangsu 214028 (CN) ZHA, Guanming Wuxi, Jiangsu 214028 (CN) GRUNDMANN, Sven Wuxi, Jiangsu 214028 (CN)