发明申请
- 专利标题： Method for operating an internal combustion engine and a device for carrying out the method
- 专利标题（中）： 用于操作内燃机的方法和用于执行该方法的装置
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申请号： US11236183申请日： 2005-09-26
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公开(公告)号： US20060080952A1公开(公告)日： 2006-04-20
- 发明人: Stefan Wickert , Torsten Handler , Dirk Samuelsen , Christian Walz
- 申请人： Stefan Wickert , Torsten Handler , Dirk Samuelsen , Christian Walz
- 优先权： DE102004046639.4 20040925
- 主分类号： F01N3/00
- IPC分类号： F01N3/00
摘要：
A method for operating an internal combustion engine; in the exhaust area of this engine there is at least one catalytic converter and downstream from the catalytic converter there is an NOx sensor. A device for carrying out this method is also provided. The NOx sensor has a cross-sensitivity to a reagent needed in the catalytic converter. In predefined operating states of the internal combustion engine, e.g., idling and/or overrun, a selection signal is supplied; when this selection signal occurs, the sensor signal supplied by the NOx sensor is interpreted as at least a measure of the reagent leakage.
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