| 摘要 |
PROBLEM TO BE SOLVED: To materialize both control of a difference in an air-fuel ratio between cylinders and control of torque fluctuation. SOLUTION: Respective combustion conditions of a plurality of cylinders with which an internal combustion engine is equipped, are set by the following control executed in accordance with respective intake quantities of a plurality of cylinders. The cylinder having minimum intake quantity is taken as a reference cylinder. In the reference cylinder, fuel injection quantity is set which materializes a theoretical air-fuel ratio. In the other cylinders, an air-fuel ratio for generating the same torque as reference torque emitted by the reference cylinder is set in accordance with intake quantity of respective cylinders. In this setting, the air-fuel ratio in the specified area outside the theoretical air-fuel ratio (the air-fuel ratio belonging to an evasion area) is excluded. With respect to a cylinder unable to materialize a reference torque only by the air fuel ratio setting, ignition timing is corrected so as to control the difference with the reference torque. By doing so, both control of a difference in an air-fuel ratio between cylinders and control of torque fluctuation can be materialized even though there exists the difference between cylinders in the intake quantity. COPYRIGHT: (C)2005,JPO&NCIPI
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