发明名称 |
Control apparatus for an internal combustion engine |
摘要 |
A control apparatus for an internal combustion engine can detect degradation of a three-way catalyst with high accuracy without causing deterioration in an exhaust. A pair of first and second air fuel ratio detectors are disposed in an exhaust system at locations upstream and downstream of the three-way catalyst for detecting a first and a second air fuel ratio of an exhaust gas. A target oxygen change amount calculator calculates a target oxygen change amount of the three-way catalyst, and an oxygen change amount calculator calculates an oxygen change amount of the three-way catalyst from an amount of exhaust gas passing through the three-way catalyst and the first air fuel ratio. An air fuel ratio operator inversely controls the air fuel ratio to a rich side and a lean side with a prescribed air fuel ratio width each time the oxygen change amount reaches a target oxygen change amount.
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申请公布号 |
US2006090456(A1) |
申请公布日期 |
2006.05.04 |
申请号 |
US20050196422 |
申请日期 |
2005.08.04 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
TANI HIDEAKI;YEHLIU KUEN;ENOKI KEIICHI;AZUMA TADAHIRO |
分类号 |
F01N3/00 |
主分类号 |
F01N3/00 |
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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