发明申请
US20100043397A1 ON BOARD DIAGNOSTIC MONITOR OF NOX CONVERSION EFFICIENCY FOR AFTERTREATMENT DEVICE
有权
用于后处理装置的NOX转换效率的板上诊断监视器
- 专利标题： ON BOARD DIAGNOSTIC MONITOR OF NOX CONVERSION EFFICIENCY FOR AFTERTREATMENT DEVICE
- 专利标题（中）： 用于后处理装置的NOX转换效率的板上诊断监视器
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申请号： US12537390申请日： 2009-08-07
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公开(公告)号： US20100043397A1公开(公告)日： 2010-02-25
- 发明人: Yue-Yun Wang , Charles E. Solbrig , Ognyan N. Yanakiev
- 申请人： Yue-Yun Wang , Charles E. Solbrig , Ognyan N. Yanakiev
- 申请人地址： US MI Detroit
- 专利权人： GM GLOBAL TECHNOLOGY OPERATIONS, INC.
- 当前专利权人： GM GLOBAL TECHNOLOGY OPERATIONS, INC.
- 当前专利权人地址： US MI Detroit
- 主分类号： F01N11/00
- IPC分类号： F01N11/00
摘要：
A method for indicating a malfunctioning catalyst in a powertrain including an internal combustion engine and an aftertreatment system including an aftertreatment device utilizing a catalyst to convert NOx includes monitoring a NOx content entering the aftertreatment system, monitoring a NOx content exiting the aftertreatment system, determining an actual conversion efficiency based upon the NOx content entering the aftertreatment system and the NOx content exiting the aftertreatment system, monitoring factors affecting conversion efficiency within the aftertreatment device, determining a malfunction conversion efficiency indicative of the malfunctioning catalyst based upon the factors affecting conversion efficiency within the aftertreatment device, and indicating the malfunctioning catalyst based upon comparing the actual conversion efficiency to the malfunction conversion efficiency.