发明名称 |
INTERNAL COMBUSTION ENGINE AND CONTROL METHOD THEREFOR |
摘要 |
<p> An engine (1) in which an ECU (18) is provided with: a catalyst temperature-increasing means (C5) that increases the temperature of a lean NOx trap (LNT) catalyst (16) by controlling an injector (15) so as to perform multi-stage injection with a temperature increase timing calculated using timing estimation parameters including a temperature parameter detected by a catalyst temperature-detecting means (C1), a NOx concentration parameter detected by a NOx concentration-detecting means (C2), and an exhaust gas flow rate parameter detected by an exhaust gas flow rate-detection means (C3); and a reduction-promoting means (C7) that promotes the reduction of NOx by the LNT catalyst (16) with a reduction timing calculated using re-detected timing estimation parameters after the temperature of the LNT catalyst (16) has been increased by the catalyst temperature-increasing means (C5). Consequently, it is possible to calculate an effective reduction timing that imparts a NOx-eliminating effect and does not decrease fuel economy, and to perform NOx elimination.</p> |
申请公布号 |
WO2014050445(A1) |
申请公布日期 |
2014.04.03 |
申请号 |
WO2013JP73528 |
申请日期 |
2013.09.02 |
申请人 |
ISUZU MOTORS LIMITED |
发明人 |
NAGAOKA,DAIJI;KORENAGA,TOMOHIRO;NAKADA,TERUO |
分类号 |
F01N3/20;F01N3/08;F02D41/34;F02D41/38;F02D45/00 |
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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