发明名称 |
INTERNAL COMBUSTION ENGINE CONTROLLER |
摘要 |
The internal combustion engine comprises an exhaust purification catalyst 20 able to store oxygen, and a downstream side air-fuel ratio sensor 41 arranged at a downstream side of the exhaust purification catalyst in a direction of exhaust flow. The control system performs feedback control of an amount of fuel fed to a combustion chamber of the internal combustion engine so that an air-fuel ratio of exhaust gas flowing into the exhaust purification catalyst becomes a target air-fuel ratio and performs learning control to correct a parameter relating to the feedback control based on an air-fuel ratio of exhaust gas detected by the downstream side air-fuel ratio sensor. The target air-fuel ratio is alternately switched between a rich set air-fuel ratio and a lean set air-fuel ratio leaner. When a condition for learning acceleration, which is satisfied when it is necessary to accelerate correction of the parameter by the learning control, is satisfied, a rich degree of the rich set air-fuel ratio is increased. Therefore, there is provided an internal combustion engine able to suitably change the speed of updating the learning value. |
申请公布号 |
EP3093470(A4) |
申请公布日期 |
2017.01.04 |
申请号 |
EP20150735353 |
申请日期 |
2015.01.08 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
OKAZAKI, Shuntaro;NAKAGAWA, Norihisa;YAMAGUCHI, Yuji;SUZUKI, Kenji;MIYAMOTO, Hiroshi;IWAZAKI, Yasushi |
分类号 |
F02D41/14;F01N3/24;F02D45/00 |
主分类号 |
F02D41/14 |
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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