公开(公告)号：US20170122166A1

公开(公告)日：2017-05-04

申请号：US15314451

申请日：2015-02-27

Applicant: Scania CV AB

Inventor： Magnus NILSSON ,  Henrik BIRGERSSON

IPC: F01N3/20 ,  F01N13/00 ,  F01N3/035

CPC classification number: F01N3/208 ,  B01D46/0027 ,  B01D46/0061 ,  B01D53/9418 ,  B01D53/9495 ,  B01D2279/30 ,  F01N3/021 ,  F01N3/023 ,  F01N3/035 ,  F01N3/103 ,  F01N3/106 ,  F01N3/2066 ,  F01N9/00 ,  F01N11/002 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2430/00 ,  F01N2510/06 ,  F01N2570/14 ,  F01N2590/08 ,  F01N2610/02 ,  F01N2610/144 ,  F01N2900/04 ,  F01N2900/14 ,  F01N2900/1402 ,  F01N2900/1404 ,  F01N2900/1616 ,  Y02A50/2344 ,  Y02T10/24 ,  Y02T10/47

Abstract: An exhaust treatment system comprising: a first oxidation catalyst to oxidize nitrogen compounds and/or hydrocarbon compounds in said exhaust stream; a first dosage device downstream of said first oxidation catalyst to supply a first additive into said exhaust stream; a first reduction catalyst device downstream of said first dosage device for reduction of nitrogen oxides in said exhaust stream using said first additive; a particulate filter, comprising a catalytically oxidizing coating downstream of said first reduction catalyst device to catch soot particles and oxidize one or several of nitrogen oxide and incompletely oxidized carbon compounds in said exhaust stream; a second dosage device downstream of said particulate filter to supply a second additive into said exhaust stream; and a second reduction catalyst device downstream of said second dosage device for a reduction of nitrogen oxides in said exhaust stream, using at least one of said first and second additive.

公开(公告)号：US20170074139A1

公开(公告)日：2017-03-16

申请号：US15120055

申请日：2015-02-27

Applicant: Scania CV AB

Inventor： Magnus NILSSON ,  Henrik BIRGERSSON

IPC: F01N3/20 ,  F01N13/00 ,  F01N3/021

CPC classification number: F01N3/208 ,  B01D46/0027 ,  B01D46/0061 ,  B01D53/9418 ,  B01D53/9495 ,  B01D2279/30 ,  F01N3/021 ,  F01N3/023 ,  F01N3/035 ,  F01N3/103 ,  F01N3/106 ,  F01N3/2066 ,  F01N9/00 ,  F01N11/002 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2430/00 ,  F01N2510/06 ,  F01N2570/14 ,  F01N2590/08 ,  F01N2610/02 ,  F01N2610/144 ,  F01N2900/04 ,  F01N2900/14 ,  F01N2900/1402 ,  F01N2900/1404 ,  F01N2900/1616 ,  Y02A50/2344 ,  Y02T10/24 ,  Y02T10/47

Abstract: An exhaust treatment system is provided for treatment of an exhaust stream, where the system comprises a first dosage device, arranged to supply a first additive into said exhaust stream and a first reduction catalyst device, arranged downstream for reduction of nitrogen oxides in said exhaust stream through the use of said first additive, and for the generation of heat through at least one exothermal reaction with said exhaust stream. A particulate filter arranged downstream of said first reduction catalyst device to catch soot particles. A second dosage device arranged downstream of said particulate filter to supply a second additive into said exhaust stream and a second reduction catalyst device, arranged downstream of said second dosage device for reduction of nitrogen oxides in said exhaust stream through the use of at least one of said first and said second additive.

Abstract translation: 提供了一种排气处理系统，用于处理废气流，其中系统包括第一剂量装置，其布置成将第一添加剂供应到所述废气流中，第一还原催化剂装置设置在下游用于还原所述废气流中的氮氧化物 通过使用所述第一添加剂，并通过与所述废气流的至少一个放热反应产生热量。 布置在所述第一还原催化剂装置下游的微粒过滤器以捕获烟尘颗粒。 第二剂量装置，其布置在所述颗粒过滤器的下游，以将第二添加剂供应到所述废气流中;以及第二还原催化剂装置，其布置在所述第二剂量装置的下游，用于通过使用以下各项中的至少一种来还原所述废气流中的氮氧化物： 第一和第二种添加剂。