希薄燃焼内燃機関を搭載する車両での窒素酸化物排出削減方法

Japanese Patent JP5300850

B2

In a method for reducing the emission of nitrogen dioxide in a motor vehicle having an exhaust gas purification system having an SCR catalytic converter with adsorption centers for nitrogen oxides, an exhaust gas enriched with ammonia is supplied to the SCR catalytic converter above an operating temperature. Below the operating temperature, the exhaust gas supplied to the SCR catalytic converter is enriched with a material such that an adsorption of nitrogen oxides is inhibited at corresponding adsorption centers of the SCR catalytic converter. In order to reduce the overall NOx emissions below a first, predeterminable amount, an exhaust gas enriched with ammonia is supplied to the SCR catalytic converter and the NO2 portion of the total NOx emissions is reduced below a second, predeterminable amount in that NO2 is converted with hydrocarbons stored in the SCR catalytic converter.

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Anke Traebelt
Cyril Comer
Belt Hold Keppeler
Jochen Rah
Marx Paul
Nicole Werkved
Accelerator Tuschlerk

JP2010526180A

September 25, 2013

September 09, 2008

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Daimler AG

F01N3/08; B01D53/94; F01N3/20; F01N3/28; F01N3/36; F02D41/04; F02D41/14

JP2008231966A
JP2007239500A
JP2000257419A
JP11343834A

Hisako Ishido
Eiichi Yamaguchi
Eri Adachi

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