| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel injection control device for an internal combustion engine, which computes an amount of correction in accordance with fuel injection pressure properly and controlling an amount of fuel injection with high precision.SOLUTION: This fuel injection control device 1 performs injection of slight amount of fuel to jet the predetermined slight amount QLCMD of fuel through a fuel injection valve 4 during fuel cut operation for stopping the injection of fuel for obtaining outputs of the internal combustion engine 3 (step 73), detects fluctuation in rotation of the internal combustion engine 3 during the injection of slight amount of fuel (step 75), detects the pressure of the fuel jetted through the fuel injection valve 4 as a fuel injection pressure and computes an amount of correction QCLRN for correcting a control inputs QCMD for controlling the amount of injection of the fuel jetted through the fuel injection valve 4 using the detected fluctuation in rotation DTRQ of the internal combustion engine 3 and the fuel injection pressure PF (steps 76, 78-83), and corrects the control input QCMD in accordance with the computed amount of correction QCLRN (step 93). |
