发明名称 |
Exhaust gas purification device for an engine and A/F ratio control for early activating a NOx trapping catalyst |
摘要 |
An exhaust gas purification device including three-way catalysts connected to engine cylinder groups and arranged in parallel, and a NOx trapping catalyst connected with the three-way catalysts downstream thereof. A controller controls fuel injection for making an A/F ratio of exhaust gas flowing into one of the three-way catalysts rich relative to a stoichiometric A/F ratio when it is required to reduce the NOx trapped by the NOx trapping catalyst. |
申请公布号 |
US6516612(B1) |
申请公布日期 |
2003.02.11 |
申请号 |
US20000495938 |
申请日期 |
2000.02.02 |
申请人 |
NISSAN MOTOR CO., LTD. |
发明人 |
YOKOI TAROU;TSUCHIDA HIROFUMI;OKADA KEIJI;ISHIHARA KOUJI |
分类号 |
B01D53/94;F01N3/08;F01N3/20;F01N3/24;F01N3/28;F01N13/02;F01N13/04;F02D41/00;F02D41/02;F02D41/14;F02D41/34;F02D41/40;(IPC1-7):F01N3/10 |
主分类号 |
B01D53/94 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|