发明名称 |
EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE |
摘要 |
An exhaust purification system for an internal combustion engine which has a plurality of cylinders comprises an exhaust purification catalyst 20, a downstream side air-fuel ratio sensor 41, and a control device 31 which controls the average air-fuel ratio of the exhaust gas and the combustion air-fuel ratios of the cylinders. The control device 31 performs average air-fuel ratio control where it controls the average air-fuel ratio alternately between the rich air-fuel ratio and the lean air-fuel ratio and inter-cylinder air-fuel ratio control where it controls the combustion air-fuel ratios of the cylinders so that the combustion air-fuel ratio becomes the rich air-fuel ratio at least at one cylinder among the plurality of cylinders even when the average air-fuel ratio is controlled to the lean air-fuel ratio by average air-fuel ratio control. In average air-fuel ratio control, the average air-fuel ratio is controlled so that the lean shift amount when controlling the average air-fuel ratio to the lean air-fuel ratio becomes smaller than the rich shift amount when controlling the average air-fuel ratio to the rich air-fuel ratio. |
申请公布号 |
EP3093468(A1) |
申请公布日期 |
2016.11.16 |
申请号 |
EP20160159922 |
申请日期 |
2016.03.11 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
SUZUKI, KAZUYA;YAMAGUCHI, YUJI;HOKUTO, HIROYUKI;MIYOSHI, YUJI;HOSHI, KOICHI |
分类号 |
F02D41/00;F02D41/02;F02D41/14 |
主分类号 |
F02D41/00 |
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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