EP1187670B1 KALIBRIERUNG EINES NOx-SENSORS UND REGELUNG EINES VORGESCHALTETEN NOx-SPEICHERKATALYSATORS
有权
基本信息:
- 专利标题： KALIBRIERUNG EINES NOx-SENSORS UND REGELUNG EINES VORGESCHALTETEN NOx-SPEICHERKATALYSATORS
- 专利标题（英）：CALIBRATION OF AN NOx SENSOR AND REGULATION OF AN UPSTREAM NOx STORAGE CATALYST
- 专利标题（中）：校准的NOx传感器和调节中上游侧NOx储存催化剂
- 申请号：EP00943741.9 申请日：2000-05-26
- 公开(公告)号：EP1187670B1 公开(公告)日：2007-12-19
- 发明人： HAHN, Hermann , HINZE, Sören
- 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： DE19926139 19990609
- 国际公布： WO2000076636 20001221
- 主分类号： B01D53/94
- IPC分类号： B01D53/94 ; F01N11/00 ; F02D41/02 ; G01N27/417
摘要：
The invention relates to a method of determining the NOx concentration of a flow of exhaust gases of an internal combustion engine by means of an NOx sensor that has been calibrated by selected operating points. Said NOx sensor is located down-stream of an NOx storage catalyst and the point of reference used to calibrate the sensor is the minimum of the sensor signal curve after the regenerative phase. Said minimum (min) is also used as a zero point for controlling the regulation of the NOx storage catalyst.