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(11)

EP 3 894 678 A1

(12)

(43) Date of publication: 20.10.2021 Bulletin 2021/42 (21) Application number: 19835738.6 (22) Date of filing: 13.12.2019

(51) International Patent Classification (IPC):  F01N 3/20(2006.01) F01N 13/16(2010.01) F01N 13/18(2010.01) (52) Cooperative Patent Classification (CPC): F01N 13/16; F01N 13/18; F01N 2610/1426; B60Y 2400/302; F01N 3/2066; Y02T 10/12; Y02A 50/20; F01N 2610/10; B60K 13/04; F01N 2610/1406; B60K 15/03177; B60K 2015/03217; B60K 15/03; B60K 2015/0321; F01N 2610/1413; B60K 2015/03427 (86) International application number: PCT/IB2019/060757 (87) International publication number: WO 2020/121269 (18.06.2020 Gazette 2020/25)

(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: 14.12.2018 IT 201800011135 (71) Applicant: Officine Metallurgiche G. Cornaglia S.p.A. 10092 Beinasco (TO) (IT)	(72) Inventors: BERTUCCI, Nazzareno 10092 Beinasco (TO) (IT) CORNAGLIA, Umberto 10092 Beinasco (TO) (IT) VILLATA, Giorgio 10092 Beinasco (TO) (IT) TAVELLA, Andrea 10092 Beinasco (TO) (IT) (74) Representative: Robba, Pierpaolo  Interpatent S.R.L. Via Caboto, 35 10129 Torino 10129 Torino (IT)