发明名称 |
CATALYST DEGRADATION DETECTING APPARATUS |
摘要 |
An exhaust purification device includes a catalytic converter for purifying exhaust gas from an engine, air-fuel ratio sensors provided on the upstream side and downstream side of the catalytic converter, respectively, for detecting the concentration of a specific component in the exhaust gas, a control device for processing the output of the air-fuel ratio sensors and generating a signal based on the processed output, and a catalyst degradation warning device which operates according to the signal generated by the control device for warning an operator of a degraded catalyst, where the responsiveness of the downstream side air-fuel ratio sensor is lower than the responsiveness of the upstream side air-fuel ratio sensor.
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申请公布号 |
CA2142744(A1) |
申请公布日期 |
1995.08.19 |
申请号 |
CA19952142744 |
申请日期 |
1995.02.17 |
申请人 |
NIPPONDENSO CO., LTD. |
发明人 |
FUKAYA, KENJI;HAYASHI, KAZUO;HORI, MAKOTO;HAMAYA, MASAHIRO;OHTA, MINORU |
分类号 |
G01N27/409;F01N3/20;F01N11/00;F02D41/14;F02D45/00;G01N27/00;G01N27/26;(IPC1-7):F01N9/00 |
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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