| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel injection control device capable of appropriately starting fuel injection when starting the fuel injection from a rest state of the fuel injection.SOLUTION: A fuel injection control device is applied to an engine 10 which includes a first injection valve 21 for injecting gas fuel to be supplied from a fuel tank 42 storing the gas fuel in a high pressure state, through a fuel passage 41, and a regulator 43 for regulating a pressure of the gas fuel to be supplied to the first injection valve 21. A control part 80 of the fuel injection control device sets a first target fuel pressure as a target value for a gas supply pressure, and controls the pressure of the gas fuel to be regulated by the regulator 43 so that a detected value for the gas supply pressure by a pressure sensor 48 becomes the first target fuel pressure, and when an injection demand for starting fuel injection from the rest state of the fuel injection is generated, the control part controls the pressure to be regulated by the regulator 43 prior to initial fuel injection so that the gas supply pressure is lower than the first target fuel pressure.SELECTED DRAWING: Figure 5 |
