| 发明名称 |
AIR-FUEL RATIO CONTROLLER AND AIR-FUEL RATIO CONTROL METHOD FOR ENGINE |
| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent the activity of a catalyst 3 from being lowered by the solid solution of a catalyst metal into a support material formed of an oxide. <P>SOLUTION: A time for which the catalyst 3 is exposed to exhaust gases with a lean air-fuel ratio at a prescribed temperature or higher is cumulated as a high temperature lean time. When the high temperature lean time exceeds a prescribed time, the air-fuel ratio of an engine 1 is switched to rich. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
| 申请公布号 |
JP2006183624(A) |
申请公布日期 |
2006.07.13 |
| 申请号 |
JP20040380385 |
申请日期 |
2004.12.28 |
| 申请人 |
MAZDA MOTOR CORP |
发明人 |
TAKAMI AKIHIDE;MIYOSHI SEIJI;YAMADA KEIJI;HARADA KOICHIRO;IWAKUNI HIDEJI;AKAMINE MASAAKI |
| 分类号 |
F02D41/04;B01D53/94;F01N3/10;F01N3/24;F02D45/00 |
主分类号 |
F02D41/04 |
| 代理机构 |
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