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公开(公告)号:US20170218811A1
公开(公告)日:2017-08-03
申请号:US15120081
申请日:2015-02-27
申请人: Scania C V AB
发明人: Magnus NILSSON , Henrik BIRGERSSON
CPC分类号: 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
摘要: Methods and systems are provided for treatment of an exhaust stream that comprises nitrogen oxides NOx. The method comprises supplying a first additive to the exhaust stream as a first reduction of a first amount of nitrogen oxides NOx_1 reaching a first device, arranged to impact the first amount of nitrogen oxides NOx_1. The method also comprises supplying a second additive to the exhaust stream, which is used as a second reduction of a second amount of nitrogen oxides NOx_2 reaching a second device, arranged to reduce the second amount of nitrogen oxides NOx_2. At least one of the first supply and the second supply is controlled, based on a total ability for the first device to provide the first reduction, and for the second device to provide the second reduction, so that a required total reduction on the nitrogen oxides NOx in the exhaust stream is provided.
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公开(公告)号:US20170218813A1
公开(公告)日:2017-08-03
申请号:US15120101
申请日:2015-02-27
申请人: Scania C V AB
发明人: Magnus NILSSON , Henrik BIRGERSSON
CPC分类号: 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
摘要: An exhaust treatment system comprising: a first dosage device to supply a first additive into an exhaust stream; a first reduction catalyst device downstream of said first dosage device, including a slip-catalyst primarily for reduction of nitrogen oxides (NOx) through the use of the additive, and secondarily for oxidation of additive; an oxidation catalyst downstream of said first reduction catalyst device; a particulate filter downstream of said oxidation catalyst; a second dosage device downstream of said particulate filter to supply a second additive into said exhaust stream; 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 said second additive.
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公开(公告)号:US20170218812A1
公开(公告)日:2017-08-03
申请号:US15120089
申请日:2015-02-27
申请人: Scania C V AB
发明人: Magnus NILSSON , Henrik BIRGERSSON
CPC分类号: 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
摘要: An exhaust treatment system comprising: a first oxidation catalyst to oxidize nitrogen- and/or hydrocarbon compounds in an 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, arranged downstream of said first dosage device, including a slip-catalyst primarily for reduction of nitrogen oxides (NOx), and secondarily for oxidation of additive; a second oxidation catalyst arranged downstream of said first reduction catalyst; a particulate filter arranged downstream of said oxidation catalyst; 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, with the use of at least one of said first and said second additive.
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