发明名称 |
Method and arrangement for monitoring the operation of a gas probe |
摘要 |
The invention is directed to a method for monitoring the operation of a gas probe, such as a lambda -probe for an internal combustion engine. The lambda -probe has a probe ceramic (Nernst cell) and a probe heater. The internal resistance (x) of the probe ceramic is measured and a desired value (y) is determined in dependence upon the temperature of the gas to be detected and the heating power of the probe heater. The internal resistance (x) is then compared to the desired value (y) and, when the measured value of the internal resistance (x) exceeds the desired value (y), then a fault signal is generated and/or the fault signal is outputted and/or the fault signal is stored.
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申请公布号 |
US6034610(A) |
申请公布日期 |
2000.03.07 |
申请号 |
US19980114483 |
申请日期 |
1998.07.13 |
申请人 |
ROBERT BOSCH GMBH |
发明人 |
SCHNAIBEL, EBERHARD;JUNGINGER, ERICH;RAFF, LOTHAR |
分类号 |
G01N27/409;F02D41/14;G01N27/26;G01N27/407;G01N27/416;(IPC1-7):G08B21/00 |
主分类号 |
G01N27/409 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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