| 摘要 |
PROBLEM TO BE SOLVED: To control injection supply pressure, while improving responsiveness and stability, in a transitional change in the injection supply pressure.SOLUTION: Gas fuel is stored in a gas tank 30 in a high pressure state. The gas tank 30 is connected to a fuel injection valve 14 via a gas pipe 15. the gas fuel in the gas tank 30 is supplied to the fuel injection valve 14 through a gas passage. The gas passage is provided with a valve element 44 as a pressure adjusting means for adjusting pressure (injection supply pressure) of the gas fuel to be supplied to the fuel injection valve 14 by changing the passage opening area of the gas passage. An ECU 50 calculates a transition control quantity, which is a control quantity of the pressure adjusting means for setting the injection supply pressure to a target value, on the basis of a pressure (tank side supply pressure) of the gas fuel on the upstream side of the pressure adjusting means in transitional change in the injection supply pressure, and controls driving of the pressure adjusting means in the transitional change in the injection supply pressure on the basis of the calculated transition control quantity. |
