发明名称 |
INTERNAL COMBUSTION ENGINE EXHAUST GAS CLEANING APPARATUS AND EXHAUST GAS CLEANING METHOD |
摘要 |
<p>An internal combustion engine exhaust gas cleaning apparatus is basically provided with a NOx trapping catalytic converter (12), a sulfur poisoning amount estimating section (S1 to S3) and a sulfur poisoning removal section (S4 to S10). The NOx trapping catalytic converter (12) is arranged in an exhaust passage to trap NOx contained in an exhaust gas flowing through the exhaust passage when an air-fuel ratio of the exhaust gas is lean and to release trapped NOx when an air- fuel ratio of the exhaust gas is rich. The sulfur poisoning amount estimating section (S1 to S3) estimates an estimated sulfur poisoning amount of sulfur poisoning of the NOx trapping catalytic converter (12) based on a fuel consumption amount and an oil consumption amount. The sulfur poisoning removal section (S4 to S10) raises a temperature of the NOx trapping catalytic converter (12) to a sulfur poisoning removal temperature based on the estimated sulfur poisoning amount to remove sulfur poisoning from the NOx trapping catalytic converter (12).</p> |
申请公布号 |
WO2009106946(A1) |
申请公布日期 |
2009.09.03 |
申请号 |
WO2009IB00280 |
申请日期 |
2009.02.17 |
申请人 |
NISSAN MOTOR CO., LTD.;YAMAMOTO, RISA |
发明人 |
YAMAMOTO, RISA |
分类号 |
F01N3/20;B01D53/94;F01N3/08 |
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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