Exhaust gas treatment device, method for processing exhaust gas, and motor vehicle
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United States of America Patent
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Feb 7, 2017
Grant Date -
Jul 24, 2014
app pub date -
Aug 8, 2012
filing date -
Aug 25, 2011
priority date (Note) -
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Abstract
The invention relates to an exhaust-gas treatment device for processing exhaust gas from a combustion aggregate, especially a diesel engine. Moreover, the present invention relates to a method for processing exhaust gas from a combustion aggregate by means of selective catalytic reaction, and it also relates to a motor vehicle in which the method according to the invention is implemented or which has the exhaust-gas treatment device according to the invention. It is provided that the exhaust-gas treatment device comprises an exhaust-gas system and, arranged in it, an oxidation catalyst, a reduction catalyst for selective catalytic reduction, and a particle filter, whereby the oxidation catalyst is arranged upstream from the reduction catalyst and the reduction catalyst is arranged upstream from the particle filter. The reduction catalyst (50) is arranged in the exhaust-gas system (20) so far upstream in the direction of flow (23) of the exhaust gas that the heat of the exhaust gas passing the reduction catalyst (50) is sufficient to bring the reduction catalyst (50) to the operating temperature.
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