发明名称 |
Method for checking the efficiency of a catalytic converter |
摘要 |
A method is provided for checking the efficiency of a catalytic converter with an oxygen probe upstream of the catalytic converter and of an oxygen probe downstream of the catalytic converter. A ratio of times in which the oxygen probe downstream of the catalytic converter and the oxygen probe upstream of the catalytic converter indicate a rich or a lean mixture value is formed. The catalytic converter has a sufficient efficiency if the value of the smaller amount of the ratio values is lower than a predeterminable limit value.
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申请公布号 |
US5673555(A) |
申请公布日期 |
1997.10.07 |
申请号 |
US19950562803 |
申请日期 |
1995.11.27 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
ACHLEITNER, ERWIN |
分类号 |
F01N3/20;F01N11/00;F02D41/14;(IPC1-7):F01N3/20 |
主分类号 |
F01N3/20 |
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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