发明名称 |
Exhaust emission control apparatus of internal combustion engine and control method of the same |
摘要 |
<p>The exhaust emission control apparatus is provided with a NOx catalyst (23) for purifying exhaust gas flowing out of an internal combustion engine (1) and a NOx sensor (29) for detecting a NOx concentration in exhaust gas flowing out of the NOx catalyst. The internal combustion engine (1) and the exhaust emission control apparatus are mounted on a vehicle. The exhaust emission control apparatus calculates a total outflow amount of NOx flowing out of the NOx catalyst (23) obtained while the vehicle runs for a predetermined distance based on a NOx concentration detected by the above-mentioned sensor (29), calculates a NOx outflow amount per unit running distance based on the total NOx outflow amount, and supplies the NOx catalyst (23) with exhaust gas with a rich air-fuel ratio when a NOx outflow amount per unit running distance exceeds a predetermined amount. <IMAGE></p> |
申请公布号 |
EP1310653(B1) |
申请公布日期 |
2004.06.16 |
申请号 |
EP20020025245 |
申请日期 |
2002.11.12 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
TANAKA, HIROSHI;IRISAWA, YASUYUKI |
分类号 |
F02D43/00;B01D53/86;B01D53/94;F01N3/08;F01N3/20;F01N3/28;F01N13/02;F02D41/02;F02D41/04;F02D41/14;F02D45/00;(IPC1-7):F02D41/02;F01N11/00 |
主分类号 |
F02D43/00 |
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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