| 摘要 |
A fuel injection controller of an internal combustion engine calculates a correction value for correcting a rotation fluctuation amount among cylinders of the engine during idling stabilization control. The controller calculates an average change in correction value over M number of changes in correction value for the cylinder. If it is determined that the average change is less than or equal to a threshold value a, it is determined that the correction value is stabilized. The correction value at that time is fixed as a learning value of a deviation amount of an injection characteristic among the cylinders. Thus, the fuel injection controller suitably achieves accurate learning of an inter-cylinder variation in the injection characteristic of the fuel injection valve and performing of the learning in a short time.
|
