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公开(公告)号：US20180230875A1
公开(公告)日：2018-08-16
申请号：US15750161
申请日：2016-08-25
Applicant: Scania CV AB
Inventor： Magnus NILSSON , Henrik BIRGERSSON
CPC classification number: F01N3/035 , F01N3/0231 , F01N3/106 , F01N3/2066 , F01N3/208 , F01N9/00 , F01N13/009 , F01N13/0093 , F01N2430/08 , F01N2610/02 , F01N2900/1402 , Y02A50/2325 , Y02T10/24 , Y02T10/47
Abstract: A method and an exhaust treatment system are provided for treatment of an exhaust stream comprising nitrogen oxides. The method comprises a first oxidation of compounds comprising one or more of nitrogen, carbon and hydrogen in the exhaust stream; a determination of a value for a ratio between a first amount of nitrogen dioxide and a first amount of nitrogen oxides after the first oxidation; and a first supply of a first additive into the exhaust stream, which is actively controlled based on the determined value for the ratio. Subsequently, a first reduction of at least the first amount of nitrogen oxides is carried out through a catalytic reaction in a catalytic filter, which consists of a particulate filter with an at least partly catalytic coating with reduction characteristics, and is arranged to catch and oxidize soot particles, and to carry out the first reduction of the first amount of nitrogen oxides.
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公开(公告)号：US20180223759A1
公开(公告)日：2018-08-09
申请号：US15750162
申请日：2016-08-25
Applicant: Scania CV AB
Inventor： Magnus NILSSON , Henrik BIRGERSSON
Abstract: An exhaust treatment system and method for the treatment of an exhaust stream from a combustion engine are provided. A first oxidation of compounds comprising one or more of nitrogen, carbon and hydrogen in the exhaust stream is carried out by a first oxidation catalyst. Further, a value (NO2_1/NOx_1)det for a ratio between a first amount of nitrogen dioxide and a first amount of nitrogen oxides leaving said first oxidation catalyst is determined. Active control of at least one parameter related to the combustion engine is carried out, based on the determined value, so that the ratio is impacted. A first additive is supplied into the exhaust stream, following which a first reduction of the first amount of nitrogen oxides is carried out through a catalytic reaction in a catalytic filter, which consists of a particulate filter with an at least partly catalytic coating with reduction characteristics. The catalytic filter is arranged for catching and oxidizing of soot particles, and to carry out the first reduction of the first amount of nitrogen oxides using the first additive.
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公开(公告)号：US20180221820A1
公开(公告)日：2018-08-09
申请号：US15750168
申请日：2016-08-25
Applicant: Scania CV AB
Inventor： Magnus NILSSON , Henrik BIRGERSSON
Abstract: An exhaust treatment system arranged for treatment of an exhaust stream is presented. The exhaust treatment system comprises a first reduction catalyst device arranged for reduction of nitrogen oxides in said exhaust stream through the use of compounds comprising one or several of carbon monoxide and hydrocarbons, which are comprised in said exhaust stream when said exhaust stream reaches said first reduction catalyst device; a particulate filter which is arranged downstream of said first reduction catalyst device to catch and oxidize soot particles in said exhaust stream; a second dosage device arranged downstream of said particulate filter and arranged to supply an additive comprising ammonia or a substance from which ammonia may be extracted and/or released into said exhaust stream; and a second reduction catalyst device, arranged downstream of said second dosage device and arranged for reduction of nitrogen oxides in said exhaust stream through the use of said additive.
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公开(公告)号：US20170082003A1
公开(公告)日：2017-03-23
申请号：US15120104
申请日：2015-02-27
Applicant: SCANIA CV AB
Inventor： Magnus NILSSON
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 treatment system for providing treatment of an exhaust stream comprising nitrogen oxides NOx, in which nitrogen monoxide NO and nitrogen dioxide NO2 are comprised. When the exhaust stream passes through the treatment system, oxidation occurs of compounds comprising nitrogen, carbon and/or hydrogen. An amount of nitrogen oxides NOx reaching a reduction catalyst device downstream of the oxidising component in the exhaust treatment system is reduced. A ratio (NO2/NOx)det between an amount of nitrogen dioxide NO2 reaching a reduction catalyst device and the amount of nitrogen oxides NOx reaching the reduction catalyst device is determined. An active control of at least one parameter related to the combustion engine is carried out, based on the determined ratio, so that the amount of nitrogen oxides NOx reaching the reduction catalyst device is increased, if the determined ratio (NO2/NOx)det exceeds an upper threshold value (NO2/NOx)threshold_high.
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公开(公告)号：US20180230877A1
公开(公告)日：2018-08-16
申请号：US15750159
申请日：2016-08-26
Applicant: Scania CV AB
Inventor： Magnus NILSSON
CPC classification number: F01N3/208 , B01D53/9418 , B01D53/944 , B01D53/9477 , B01D53/9495 , B01D2255/904 , F01N3/023 , F01N3/0293 , F01N3/035 , F01N3/0814 , F01N3/103 , F01N3/106 , F01N3/2066 , F01N11/002 , F01N11/007 , F01N13/009 , F01N2510/06 , F01N2560/026 , F01N2560/06 , F01N2560/14 , F01N2570/14 , F01N2610/02 , F01N2610/1406 , F01N2610/1433 , F01N2900/08 , Y02A50/2325 , Y02T10/24
Abstract: Methods and systems are provided for treatment of an exhaust stream, comprising nitrogen oxides. The method comprises a first oxidation of compounds comprising one or more of nitrogen, carbon and hydrogen in the exhaust stream; and a control of a first supply of a first additive to the exhaust stream to prevent an accumulation of soot exceeding a soot threshold value in a catalytic filter. This soot threshold value depends at least on operating conditions for the combustion engine, which impact a level of a flow for the exhaust stream. A first reduction of nitrogen oxides is performed using reduction characteristics of a catalytic coating in the catalytic filter and the supplied first additive. Soot particles are caught and oxidized. A control of a second supply of a second additive is performed, following which a second reduction of nitrogen oxides is performed using the first and/or the second additive in a reduction catalyst device.
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Patent Agency Ranking
公开(公告)号：US20190040778A1
公开(公告)日：2019-02-07
申请号：US16032706
申请日：2018-07-11
Applicant: Scania CV AB
Inventor： Magnus NILSSON , Henrik BIRGERSSON
IPC: F01N3/20 , F01N9/00 , F01N13/00 , B01D46/00 , B01D53/94 , F01N3/021 , F01N3/023 , F01N3/035 , F01N3/10 , F01N11/00
Abstract: An exhaust treatment system comprising: a first dosage device, arranged to supply a first additive into said exhaust stream; a first reduction catalyst device, downstream of said first dosage device arranged for reduction of nitrogen oxides in said exhaust stream through the use of said first additive; a particulate filter, at least partly comprising a catalytically oxidizing coating, which is downstream of said first reduction catalyst device to catch soot particles, and to 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, with the use of at least one of said first and said second additive.
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7.发明申请公开(公告)号：US20170183998A1
公开(公告)日：2017-06-29
申请号：US15120075
申请日：2015-02-27
Applicant: Scania CV AB
Inventor： Magnus NILSSON , Henrik BIRGERSSON
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 oxidise nitrogen and/or carbon compounds in an exhaust stream and a first dosage device downstream of said first oxidation catalyst to supply a first additive. A first reduction catalyst device is arranged downstream of said first dosage device for reduction of nitrogen oxides using 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 and a second dosage device, arranged downstream of said particulate filter to supply a second additive. A second reduction catalyst device is 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.
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公开(公告)号：US20170152780A1
公开(公告)日：2017-06-01
申请号：US15314441
申请日：2015-02-27
Applicant: Scania CV AB
Inventor： Magnus NILSSON , Henrik BIRGERSSON
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 dosage device, arranged to supply a first additive into said exhaust stream; a first reduction catalyst device, downstream of said first dosage device arranged for reduction of nitrogen oxides in said exhaust stream through the use of said first additive; a particulate filter, at least partly comprising a catalytically oxidizing coating, which is downstream of said first reduction catalyst device to catch soot particles, and to 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, with the use of at least one of said first and said second additive.
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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
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.
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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
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。
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