发明名称 |
INTERNAL COMBUSTION ENGINE CONTROL DEVICE |
摘要 |
<p>An internal combustion engine control device for, in a lean-burn internal combustion engine provided with a three-way catalyst and a lean NOx catalyst in an exhaust system, optimizing an air/fuel ratio in a rich mode from the viewpoints of both better fuel economy and exhaust emission control when NOx having been stored in a lean NOx catalyst during a lean operation is desorbed and cleaned by switching to a rich operation. An internal combustion engine control device for controlling an air/fuel ratio during the rich operation to be changed between a period of desorbing O 2 stored in the three-way catalyst and a period of desorbing and cleaning NOx stored in the lean NOx catalyst.</p> |
申请公布号 |
EP1619373(A1) |
申请公布日期 |
2006.01.25 |
申请号 |
EP20030728017 |
申请日期 |
2003.04.30 |
申请人 |
HITACHI, LTD. |
发明人 |
NAKAGAWA, SHINJI;HORI, TOSHIO;NEMOTO, MAMORU;NAGANO, MASAMI |
分类号 |
A61K31/135;A61K31/137;A61K31/485;F01N3/08;F01N13/02;F02D41/02;(IPC1-7):F02D41/04;F02D41/14;F01N3/24;F01N3/28;F02D45/00 |
主分类号 |
A61K31/135 |
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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