发明名称 |
CATALYST DETERIORATION JUDGING SYSTEM |
摘要 |
The deterioration judgment for an absorption reduction type NOx catalyst is performed quickly and correctly. A catalyst deterioration judging system includes a judging unit which judges that the absorption reduction type NOx catalyst is deteriorated if a detected value of an NH3 detecting unit is not more than a threshold value within a predetermined time immediately after starting supply of a reducing agent from a supply unit while regulating an amount of the reducing agent so that the air-fuel ratio of an exhaust gas is a rich air-fuel ratio by means of a control unit when NOx is absorbed by the absorption reduction type NOx catalyst. |
申请公布号 |
US2013330234(A1) |
申请公布日期 |
2013.12.12 |
申请号 |
US201113982611 |
申请日期 |
2011.03.03 |
申请人 |
NAKAMURA YOSHITAKA;SAITO HIROTAKA;KIDOKORO TORU;SAWADA HIROSHI;TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
NAKAMURA YOSHITAKA;SAITO HIROTAKA;KIDOKORO TORU;SAWADA HIROSHI |
分类号 |
G01N31/10 |
主分类号 |
G01N31/10 |
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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