公开(公告)号：US11511228B2

公开(公告)日：2022-11-29

申请号：US17309151

申请日：2019-10-24

Applicant: BASF Corporation

Inventor： Stefan Maurer ,  Jia Di Zhang ,  Yu Dai ,  Yu Fen Hao ,  Ming Ming Wei ,  Teng Shen

IPC: B01D53/94 ,  B01J23/40 ,  B01J29/76 ,  B01J35/00 ,  B01J35/04 ,  B01J35/10 ,  B01J37/02 ,  F01N3/10 ,  F01N3/20 ,  F01N3/28

Abstract: The present invention relates generally to the field of exhaust treatment systems for purifying exhaust gas discharged from a lean burn engine. The exhaust treatment system comprises a Diesel Oxidation Catalyst (DOC), a Catalyzed Soot Filter (CSF), a reductant injector, an AEI zeolite based Selective Catalyzed Reduction (SCR) catalyst and an Ammonia Oxidation Catalyst (AMOX) downstream to the AEI zeolite based SCR catalyst.