| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel injection control device capable of executing more appropriate fuel injection control in response to an injection characteristic at each time including even temporal characteristic change. <P>SOLUTION: A fuel injection control device (ECU 60) which is provided with a valve body including a fuel injection hole therein, a needle accommodated in the valve body for opening/closing the injection hole, and a piezoelectric element for reciprocatively drive the needle and applied to an injector 20 capable of successively adjusting an injection ratio indicating a fuel injection amount per unit time so as to control fuel injection supply to an engine, includes a program for sensing a fuel pressure waveform indicating the transition of fuel pressure fluctuation with respect to the prescribed injection of the injector 20 on the basis of output of a fuel pressure sensor 20a, and a program for calculating an injection command signal for making a prescribed injection parameter relating to the prescribed injection close to a reference value of the parameter on the basis of the fuel pressure waveform detected by the program. <P>COPYRIGHT: (C)2009,JPO&INPIT |
