发明公开
EP1183453A1 VERFAHREN ZUR ENTSCHWEFELUNG VON WENIGSTENS EINEM IN EINEM ABGASKANAL EINER VERBRENNUNGSKRAFTMASCHINE ANGEORDNETEN NOx-SPEICHERKATALYSATOR
有权
工艺为至少一个内燃发动机的气体通路的脱硫ARRANGED NO X储存催化剂
- 专利标题： VERFAHREN ZUR ENTSCHWEFELUNG VON WENIGSTENS EINEM IN EINEM ABGASKANAL EINER VERBRENNUNGSKRAFTMASCHINE ANGEORDNETEN NOx-SPEICHERKATALYSATOR
- 专利标题（英）： METHOD FOR DESULFURIZATION OF AT LEAST ONE NOx STORAGE CATALYST MOUNTED IN THE EXHAUST GAS DUCT OF AN INTERNAL COMBUSTION ENGINE
- 专利标题（中）： 工艺为至少一个内燃发动机的气体通路的脱硫ARRANGED NO X储存催化剂
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申请号： EP00931209.1申请日： 2000-05-13
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公开(公告)号： EP1183453A1公开(公告)日： 2002-03-06
- 发明人: POTT, Ekkehard , GOTTSCHLING, Martina , HELD, Wolfgang , HAHN, Hermann
- 申请人： Volkswagen Aktiengesellschaft
- 申请人地址： 38436 Wolfsburg DE
- 专利权人： Volkswagen Aktiengesellschaft
- 当前专利权人： Volkswagen Aktiengesellschaft
- 当前专利权人地址： 38436 Wolfsburg DE
- 优先权： DE19923481 19990521
- 国际公布： WO0071877 20001130
- 主分类号： F02D41/14
- IPC分类号： F02D41/14
摘要：
The invention relates to a method for desulfurization of at least one NOx storage catalyst mounted in the exhaust gas duct of an internal combustion engine, comprising at least one gas sensor mounted downstream of said NOx storage catalyst. After the need for desulfurization has been detected, a minimum temperature is regulated in the NOx storage catalyst and the internal combustion engine is set to a rich working mode with μ l until a predetermined first threshold value (Sm) has been reached for lambda in the gas sensor (21) in a first phase (t1); b) after the first threshold value (Sm) has been reached, the internal combustion engine (14) is set to a thick working mode with μ
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