| 摘要 |
PURPOSE:To avoid an impact during driving by selecting the entire-cylinder synchronous injection method at the high-speed and high-load operation time, the sequential injection method at the low-speed and low-load operation time and the group injection radiating method at the changing rime from the later injection method to the former injection method. CONSTITUTION:There is provided a sequential injection control means B which sends the dirving pulse signal to a fuel injection valve A at the timing coinciding to each of intake strokes in cylinders. And there are provided both a group injection control means C which sends the driving pulse signal to each of the fuel injection valves A of a plurality of cylinders separated in a group, and an entire-cylinder synchronous injection control means D which sends the driving pulse signal to the injection valves A of all cylinders. A changing means E selects the proper one among the injection control means B to D, that is, operates the injection control means D at the high-speed and high-load operation time, the injection control means B at the low-speed and low-load operation time, and the group injection control means C for the specified period when the injection control means B changes to the injection control means D.
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