| 摘要 |
PROBLEM TO BE SOLVED: To reduce allowable deviation of an injection system, especially a common rail injection valve, by carrying out various weighting to preset correction values for all partial injections, starting from the correction values for correcting control times for valves capable of being electrically operated. SOLUTION: A combustion cycle injection is divided into such as a pilot injection, a main injection and an after injection. Starting from various working characteristics, a correction value preset portion 24 calculates correction values K to correct injection duration. These correction values K are individually and continuously stored for each of cylinders. The calculation of the correction values K are started from for example a value of control duration where an injection is not carried out by using a response signal. The control duration is increased until the injection is detected by utilizing the response signal. The calculated injection control duration indicates minimum duration, and starting from the minimum control duration, the correction values K are calculated. The control duration regulates duration of the pilot injection, main injection, and after injection.
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