发明名称 |
EXHAUST GAS PURIFICATION APPARATUS FOR INTERNAL COMBUSTION ENGINE |
摘要 |
In cases where an NOx selective reduction catalyst is provided at a location downstream of an NOx storage reduction catalyst, NOx purification performance in an exhaust gas purification apparatus as a whole is maintained, irrespective of deterioration of the NOx storage reduction catalyst. For this purpose, the reduction of NOx in the NOx storage reduction catalyst is promoted more when the degree of deterioration of the NOx storage reduction catalyst or the NOx selective reduction catalyst is low than when it is high, and the reduction of NOx in the NOx selective reduction catalyst is promoted more when the degree of deterioration of the NOx storage reduction catalyst or the NOx selective reduction catalyst is high than when it is low. |
申请公布号 |
EP2754868(A1) |
申请公布日期 |
2014.07.16 |
申请号 |
EP20110871891 |
申请日期 |
2011.09.06 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
SAKURAI, KENJI;KIDOKORO, TORU;IRISAWA, YASUYUKI;OBUCHI, TUYOSHI |
分类号 |
F01N3/20;F01N3/08;F01N3/10;F01N11/00 |
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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