公开(公告)号：US20180258811A1

公开(公告)日：2018-09-13

申请号：US15750167

申请日：2016-08-25

Applicant: Scania CV AB

Inventor： Magnus NILSSON

IPC: F01N3/20 ,  F01N3/035 ,  F01N13/00 ,  F01N3/10

CPC classification number: F01N3/206 ,  F01N3/035 ,  F01N3/103 ,  F01N3/2066 ,  F01N3/208 ,  F01N9/00 ,  F01N13/0093 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2610/02 ,  F01N2900/08 ,  F01N2900/102 ,  F01N2900/12 ,  F01N2900/1411 ,  F01N2900/1602 ,  F01N2900/1606 ,  F01N2900/1621 ,  F01N2900/1812 ,  G08G1/09623 ,  G08G1/09626 ,  G08G1/096716 ,  G08G1/096758 ,  G08G1/096775 ,  G08G1/096791 ,  Y02A50/2325 ,  Y02T10/24

Abstract: Provided are a method and a system for treatment of an exhaust stream, from a combustion engine comprising nitrogen oxides. An estimate of at least one future operating condition for the exhaust treatment system is determined based on a road section ahead of the vehicle. A first additive is input into the exhaust stream to cause a first reduction of nitrogen oxides in a first reduction catalyst device. A second additive is input into the exhaust stream to cause a second reduction of a second amount of nitrogen oxides in a second reduction catalyst device, arranged downstream of the first reduction catalyst device. The first supply of additive is controlled based on the estimated at least one future operating condition, such that the first reduction catalyst device is exposed, over time, to a substoichiometric condition, with respect to the first additive and the first amount of nitrogen oxides.

公开(公告)号：US20180221819A1

公开(公告)日：2018-08-09

申请号：US15750152

申请日：2016-08-25

Applicant: Scania CV AB

Inventor： Magnus NILSSON ,  Henrik BIRGERSSON

IPC: B01D53/94 ,  F01N13/00 ,  F01N3/035 ,  F01N3/10 ,  F01N3/20

CPC classification number: B01D53/9477 ,  B01D53/9495 ,  F01N3/0231 ,  F01N3/035 ,  F01N3/103 ,  F01N3/106 ,  F01N3/2066 ,  F01N3/208 ,  F01N9/00 ,  F01N11/00 ,  F01N11/005 ,  F01N13/009 ,  F01N13/0093 ,  F01N2250/02 ,  F01N2430/08 ,  F01N2510/06 ,  F01N2560/026 ,  F01N2610/02 ,  F01N2900/16 ,  F01N2900/1602 ,  Y02T10/24 ,  Y02T10/47

Abstract: An exhaust treatment system comprising: a first oxidation catalyst, to oxidize compounds comprising one or more of nitrogen, carbon, and hydrogen in the exhaust stream; a first dosage device o supply a first additive into an exhaust stream; a catalytic filter, consisting of a particulate filter with an at least partly catalytic coating with reduction characteristics, which is for catching and oxidizing soot particles and for a first reduction of an amount of nitrogen oxides NOx in the exhaust stream with the use of the first additive; a second oxidation catalyst, to oxidize one or more of nitrogen oxide NO and incompletely oxidized carbon compounds in the exhaust stream; a second dosage device to supply a second additive into the exhaust stream; and a reduction catalyst device, arranged for a second reduction of nitrogen oxides NOx in the exhaust stream, with the use of at least one of the first and second additives.

公开(公告)号：US20180073409A1

公开(公告)日：2018-03-15

申请号：US15816124

申请日：2017-11-17

Applicant: SCANIA CV AB

Inventor： Magnus NILSSON ,  Henrik BIRGERSSON ,  Andreas LILJESTRAND

IPC: F01N3/20 ,  F01N3/22

CPC classification number: F01N3/208 ,  F01N3/22 ,  F01N2610/02 ,  F01N2900/08 ,  F01N2900/1404 ,  F01N2900/1602 ,  F01N2900/1811 ,  Y02A50/2325 ,  Y02T10/24

Abstract: A method at an exhaust gas cleaning system for an engine (235) in which a reducing agent is added to a passage (290) for exhaust gases from the engine (235) for cleaning the exhaust gases. The exhaust gas cleaning system includes arrangements (270) that require a certain temperature level (Tmax) in order to achieve catalytic exhaust gas cleaning. The method is to distribute and store (s430) a limited amount of reducing agent at temperature level (Tmax); and to use (s440) during a cold start of the exhaust gas cleaning system, the distributed and stored reducing agent to achieve the catalytic exhaust gas cleaning. Also a computer program product (200; 210) to implement the method. Also an arrangement for an exhaust gas cleaning system for an engine (235), and a motor vehicle (100) equipped with the arrangement.

公开(公告)号：US20170030235A1

公开(公告)日：2017-02-02

申请号：US15120107

申请日：2015-02-27

Applicant: Scania CV AB

Inventor： Magnus NILSSON

IPC: F01N3/20 ,  F01N13/00

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: A method and an exhaust treatment system are provided for treatment of an exhaust stream that comprises nitrogen oxides NOx. The method comprises using a first slip-catalyst SC1, arranged at a first device to create a first impact on a first amount of nitrogen oxides NOx_1 An NOx-storing catalyst may store nitrogen oxides NOx. The first slip-catalyst SC1 may reduce nitrogen oxides NOx, and/or oxidize potential additive in the exhaust stream. This first impact is actively controlled, based on the first amount of nitrogen oxides NOx_1 reaching the first device. The method also comprises a second impact on a second amount of nitrogen oxides NOx_2 reaching a second device. The active control of the first impact may be by active control of the dosage of additive at the first device, and/or through an active control of an exhaust environment, for example, a temperature for the exhaust stream.

Abstract translation: 提供了一种方法和排气处理系统，用于处理包含氮氧化物NOx的废气流。 该方法包括使用布置在第一装置上的第一滑移催化剂SC1，以对第一量的氮氧化物产生第一冲击NOx_1。储存NOx的催化剂可存储氮氧化物NOx。 第一滑移催化剂SC1可以减少氮氧化物NOx，和/或氧化废气流中的潜在添加剂。 基于第一量氮氧化物NOx_1到达第一装置，该第一冲击被主动控制。 该方法还包括对到达第二装置的第二量的氮氧化物NOx_2的第二冲击。 第一冲击的主动控制可以是主动控制在第一装置处的添加剂的剂量，和/或通过排气环境的主动控制，例如排气流的温度。

公开(公告)号：US20160097312A1

公开(公告)日：2016-04-07

申请号：US14889538

申请日：2014-05-21

Applicant: SCANIA CV AB

Inventor： Magnus NILSSON ,  Henrik BIRGERSSON ,  Andreas LILJESTRAND

IPC: F01N3/20

CPC classification number: F01N3/208 ,  F01N3/22 ,  F01N2610/02 ,  F01N2900/08 ,  F01N2900/1404 ,  F01N2900/1602 ,  F01N2900/1811 ,  Y02A50/2325 ,  Y02T10/24

Abstract: A method at an exhaust gas cleaning system for an engine (235) in which a reducing agent is added to a passage (290) for exhaust gases from the engine (235) for cleaning the exhaust gases. The exhaust gas cleaning system includes arrangements (270) that require a certain temperature level (Tmax) in order to achieve catalytic exhaust gas cleaning. The method is to distribute and store (s430) a limited amount of reducing agent at temperature level (Tmax); and to use (s440) during a cold start of the exhaust gas cleaning system, the distributed and stored reducing agent to achieve the catalytic exhaust gas cleaning. Also a computer program product (200; 210) to implement the method. Also an arrangement for an exhaust gas cleaning system for an engine (235), and a motor vehicle (100) equipped with the arrangement.

Abstract translation: 一种用于发动机（235）的排气清洁系统的方法，其中将还原剂添加到用于来自用于清洁废气的发动机（235）的废气的通道（290）中。 排气清洁系统包括需要一定温度水平（Tmax）的装置（270），以实现催化废气清洁。 该方法是在（tmax）温度下分配（s430）有限量的还原剂; 并且在排气清洁系统的冷启动期间使用（s440）分配和储存的还原剂来实现催化废气清洁。 还有一种用于实现该方法的计算机程序产品（200; 210）。 还有一种用于发动机（235）的排气清洁系统和配备有该装置的机动车辆（100）的装置。