| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel injection control device capable of inhibiting fuel from adhering onto wall surfaces. Ž<P>SOLUTION: The fuel injection control device for controlling a fuel injection device that injects fuel into a cylinder according to a command value of an injection amount per one time, includes a setting means (S1) for setting command values of an injection amount and an injection pressure, a means for controlling pressures of fuel, a means for setting moving distance (S4) that fuel moves as it is liquid, based on detected or estimated in-cylinder state, and an injection pressure and an injection amount, and a means for setting a predetermined injection pressure at which the moving distance becomes minimum based on the in-cylinder state and the injection amount. The setting means sets a wall surface distance between an injection region and a wall surface in cylinder of the fuel injection device. If a moving distance set based on a first injection pressure and a first injection amount as command values based on an operating condition of the internal combustion engine is larger than the wall surface distance (S5-Y), the setting means sets, as a substitute for the first injection pressure, a predetermined injection pressure, or a second injection pressure between the first injection pressure and the predetermined injection pressure, as a command value of injection pressure (S6). Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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