| 发明名称 |
Method for judging the failure or end of life of a sensor element |
| 摘要 |
In the present sensor element failure or end of life judging method, the internal impedance of a gas sensor element is measured and, if the thus measured internal impedance goes beyond a previously determined threshold value, then it is judged that the gas sensor element fails or comes to the end of life.
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| 申请公布号 |
US6076389(A) |
申请公布日期 |
2000.06.20 |
| 申请号 |
US19980163302 |
申请日期 |
1998.09.30 |
| 申请人 |
AKEBONO BRAKE INDUSTRY CO., LTD.;AKEBONO RESEARCH AND DEVELOPMENT CENTRE LTD. |
发明人 |
KANEKO, MINORU |
| 分类号 |
G01N27/409;F02D41/14;G01N27/26;G01N27/416;G01N27/417;G01N33/00;(IPC1-7):F02B33/00 |
主分类号 |
G01N27/409 |
| 代理机构 |
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