发明授权
- 专利标题: Exhaust-gas aftertreatment device with nitrogen oxide storage catalytic converter, and operating method therefor
- 专利标题(中): 具有氮氧化物储存催化转化器的废气后处理装置及其操作方法
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申请号: US10754210申请日: 2004-01-09
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公开(公告)号: US07174705B2公开(公告)日: 2007-02-13
- 发明人: Klaus Binder , Josef Günther , Andreas Hertzberg , Brigitte Konrad , Bernd Krutzsch , Heinz-Jost Ölschlegel , Stefan Renfftlen , Dirk Voigtländer , Michel Weibel , Marko Weirich , Günter Wenninger , Rolf Wunsch
- 申请人: Klaus Binder , Josef Günther , Andreas Hertzberg , Brigitte Konrad , Bernd Krutzsch , Heinz-Jost Ölschlegel , Stefan Renfftlen , Dirk Voigtländer , Michel Weibel , Marko Weirich , Günter Wenninger , Rolf Wunsch
- 申请人地址: DE Stuttgart
- 专利权人: DaimlerChrysler AG
- 当前专利权人: DaimlerChrysler AG
- 当前专利权人地址: DE Stuttgart
- 代理商 Klaus J. Bach
- 优先权: DE10131588 20010703
- 主分类号: F01N3/00
- IPC分类号: F01N3/00
摘要:
An internal combustion engine includes an exhaust-gas aftertreatment device, and an operating method is for operating the internal combustion engine. The internal combustion engine is operable with a lean mixture and a rich mixture, the internal combustion engine having an exhaust-gas aftertreatment device, which includes a nitrogen oxide storage catalytic converter and a particle filter. When lean exhaust gas flows through the nitrogen oxide storage catalytic converter, it removes nitrogen oxides from the exhaust gas by storing them, and, when reducing exhaust gas flows through the nitrogen oxide storage catalytic converter, it produces ammonia through reduction of stored and/or supplied nitrogen oxides and releases it to the exhaust gas. Downstream from the nitrogen oxide storage catalytic converter, the exhaust-gas aftertreatment device includes a SCR catalytic converter, which reduces nitrogen oxides contained in the exhaust gas, using ammonia produced by the nitrogen oxide storage catalytic converter.