发明名称 |
AIR-FUEL RATIO CONTROL APPARATUS OF INTERNAL COMBUSTION ENGINE |
摘要 |
<p>An air-fuel ratio control apparatus of an internal combustion engine includes first and second catalysts 10 and 12, first air-fuel ratio acquiring means 8 provided up-stream of the first catalyst, for acquiring an air-fuel ratio of exhaust gas; second air-fuel ratio acquiring means 11 for acquiring an air-fuel ratio of the exhaust gas flowing into the second catalyst, and air-fuel ratio controlling means 13 for controlling an air-fuel ratio according to the air-fuel ratios acquired by the first and second air-fuel ratio acquiring means, and the air-fuel ratio controlling means is provided with lean control means 13 for controlling an air-fuel ratio until the second catalyst becomes lean after completion of a fuel quantity increasing operation of the engine, and intermediate lean control means 13 for performing control to change the air-fuel ratio to a lean air-fuel ratio within the range enough to make the first catalyst lean and not enough to make the second catalyst lean, between the fuel quantity increasing operation and the air-fuel ratio control by the lean control means.</p> |
申请公布号 |
EP1706622(A1) |
申请公布日期 |
2006.10.04 |
申请号 |
EP20040799936 |
申请日期 |
2004.11.29 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
NAKAGAWA,NORIHISA;AKIYOSHI,ASUKA |
分类号 |
F02D41/02;F02D45/00;F01N3/20;F01N3/24;F01N3/28;F01N13/02;F02D41/04;F02D41/08;F02D41/14 |
主分类号 |
F02D41/02 |
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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