发明名称 |
INTER-CYLINDER AIR-FUEL RATIO IMBALANCE DETECTION APPARATUS FOR INTERNAL COMBUSTION ENGINE |
摘要 |
An air-fuel ratio imbalance detection apparatus includes an air-fuel ratio sensor that is arranged in an exhaust passage of an internal combustion engine and that includes an electrode and a diffusion layer provided on the electrode; an estimating unit configured to estimate or detect an output variation amount that is an amount of variation in an output of the air-fuel ratio sensor due to an influence of a pressure pulsation of exhaust gas from the internal combustion engine; and a determination unit configured to determine whether there is an air-fuel ratio imbalance among cylinders of the internal combustion engine, on the basis of the output variation amount and a determination value based on the output of the air-fuel ratio sensor.
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申请公布号 |
US2013253802(A1) |
申请公布日期 |
2013.09.26 |
申请号 |
US201313827660 |
申请日期 |
2013.03.14 |
申请人 |
MIYAMOTO HIROSHI;SUZUKI KENJI;IWAZAKI YASUSHI;SASAKI TAKANORI;TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
MIYAMOTO HIROSHI;SUZUKI KENJI;IWAZAKI YASUSHI;SASAKI TAKANORI |
分类号 |
F02D43/04 |
主分类号 |
F02D43/04 |
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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