公开(公告)号：US20170276053A1

公开(公告)日：2017-09-28

申请号：US15270467

申请日：2016-09-20

Applicant: Caterpillar Inc.

Inventor： Wade J. Robel ,  Tom Paulson ,  Anthony C. Rodman ,  J. Josh Driscoll ,  Bogdan Balea

IPC: F01N13/00 ,  B01D53/94 ,  F01N3/022 ,  F01N3/08 ,  F01N3/10 ,  F01N3/20

CPC classification number: F01N13/009 ,  B01D53/9477 ,  B01D53/9481 ,  B01D2255/808 ,  B01D2255/904 ,  B01D2255/91 ,  B01D2255/9155 ,  F01N3/021 ,  F01N3/0222 ,  F01N3/0231 ,  F01N3/035 ,  F01N3/0842 ,  F01N3/103 ,  F01N3/106 ,  F01N3/206 ,  F01N3/2066 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2240/40 ,  F01N2340/00 ,  F01N2340/02 ,  F01N2570/18 ,  F01N2610/00 ,  F01N2610/02 ,  Y02T10/24

Abstract: An after-treatment system includes, in series along an exhaust gas flow direction through the after-treatment system: a diesel oxidation catalyst (DOC) or a passive NOx adsorber (PNA), a diesel exhaust fluid (DEF) delivery device, a soot-reducing device and a selective catalytic reduction (SCR) catalyst, which may also include an additional PNA.