| 摘要 |
PROBLEM TO BE SOLVED: To provide a controller of a common rail fuel injection system capable of preventing exhaust emission from being deteriorated by suppressing the lowering of fuel injection control accuracy due to the displacement of an interval time between injections of multiple injection. SOLUTION: The controller changes the interval time intentionally (Step S201), estimates a fuel injection amount during the change (Step S203), and provides a deviation as a difference between the estimated fuel injection amount and an injection amount command value (Step S204). Based on correlation data between a deviation time of the interval time and the injection amount deviation, the controller calculates a time difference in the deviation time for bringing the injection amount deviation to zero between a standard state and an aged state as a control deviation time (Step S206). Based on the control deviation time, the controller corrects the injection amount command value. COPYRIGHT: (C)2007,JPO&INPIT
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