公开(公告)号：US20200072109A1

公开(公告)日：2020-03-05

申请号：US16466473

申请日：2016-12-16

Applicant: VOLVO TRUCK CORPORATION

Inventor： Fredrik Blomgren ,  Soran Shwan ,  Mathias Magnussson

IPC: F01N3/20 ,  F01N13/00 ,  F01N3/10 ,  B01D53/94 ,  B01J29/072 ,  B01J23/22 ,  B01J23/04

Abstract: The invention provides an exhaust gas treatment system (8) arranged to receive exhaust gases from an internal combustion engine (6), the system comprising an exhaust conduit (10) and a selective catalytic reduction (SCR) catalyst (12) provided in the exhaust conduit (10), characterized in that the system comprises a nitrogen dioxide reducing unit (701) provided in the exhaust conduit (10) upstream of the SCR catalyst (12), wherein the nitrogen dioxide reducing unit (701) is adapted to reduce, at a low temperature, nitrogen dioxide (NO2) in exhaust gases received by the nitrogen dioxide reducing unit (701).

公开(公告)号：US11492946B2

公开(公告)日：2022-11-08

申请号：US17296031

申请日：2018-11-26

Applicant: VOLVO TRUCK CORPORATION

Inventor： Lennart Andersson ,  Soran Shwan ,  Mathias Magnussson

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

Abstract: An aftertreatment system (100) connected downstream an internal combustion engine arrangement (102) for receiving combustion gas exhausted from the internal combustion engine arrangement (102) during operation thereof, the aftertreatment system (100) comprising a primary aftertreatment system (104) comprising a first catalytic reduction arrangement (106); a secondary reduction system (108) comprising a second catalytic reduction arrangement (110).