发明名称 |
Oxygen sensor readiness detection |
摘要 |
An oxygen sensor readiness module comprises a voltage source, a current detection module, and a control module. The voltage source selectively produces a bias signal, which is applied to a sensing element of an oxygen sensor. The current detection module measures a pumping current of the oxygen sensor. The control module generates a readiness signal based upon a comparison of the pumping current with a pumping current threshold.
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申请公布号 |
US7630840(B2) |
申请公布日期 |
2009.12.08 |
申请号 |
US20070945565 |
申请日期 |
2007.11.27 |
申请人 |
GM GLOBAL TECHNOLOGY OPERATIONS, INC. |
发明人 |
SELL JEFFREY A.;GIBSON BRADLEY |
分类号 |
G01R31/312;G01R31/08;G01R31/315 |
主分类号 |
G01R31/312 |
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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