| 摘要 |
PROBLEM TO BE SOLVED: To prevent or inhibit drop of learning accuracy due to disturbance, in a fuel injection control device executing injection quantity learning for a diesel engine. SOLUTION: This fuel injection control device calculates difference between speed of the diesel engine in a case of executing injection for learning and speed of the diesel engine in a case of not executing injection for learning as speed rise quantityδ1-δ4, calculates actual injection quantity actually injected from an injector based on a rotation state of the diesel engine, calculates difference between the calculated actual injection quantity and command injection quantity commanded to the injector as characteristic slippage quantity, and corrects command injection quantity to reduce the characteristic slippage quantity. In this case, correction of command injection quantity is inhibited when dispersion of the speed rise quantityδ1-δ4 is a predetermined value or higher. COPYRIGHT: (C)2008,JPO&INPIT
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