发明名称 |
AIR/FUEL RATIO IMBALANCE DETECTION DEVICE FOR INTERNAL COMBUSTION ENGINE |
摘要 |
A plurality of cylinders are provided. An in-cylinder pressure sensor is mounted on each of the plurality of cylinders. A combustion parameter (e.g., the amount of generated heat) is calculated from the output of the in-cylinder pressure sensor. The air-fuel ratio for a cylinder is enleaned by reducing a fuel injection amount until the combustion parameter coincides with a predetermined value. Each cylinder is subjected to fuel injection amount reduction control so that the combustion parameter coincides with the predetermined value. The air-fuel ratio for each cylinder is then calculated in accordance with the reduction amount of fuel injection amount. The calculated air-fuel ratios are compared to detect an air-fuel ratio imbalance between the cylinders. |
申请公布号 |
EP2711527(B1) |
申请公布日期 |
2017.01.25 |
申请号 |
EP20110822856 |
申请日期 |
2011.05.16 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
IKEDA, Shinji;SANO,Takeshi;SHIMODE, Kazumasa |
分类号 |
F02D41/14;F02D35/02;F02D41/00;F02D41/30 |
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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