| 摘要 |
PROBLEM TO BE SOLVED: To stably atomize fuel by keeping each bubble diameter of bubbles mixed in the fuel at a desired size.SOLUTION: A fuel injection device includes: a fuel injection valve for injecting bubble-containing fuel; a fuel temperature acquisition part for acquiring the temperature of the fuel to be injected from the fuel injection valve; and a fuel pressure changing part for changing fuel pressure in the fuel injection valve based on the temperature of the fuel acquired by the fuel temperature acquisition part in which the fuel pressure changing part increases the fuel pressure when the bubble-containing fuel is set at a temperature capable of increasing bubble diameters of the bubbles in the bubble-containing fuel. Since the bubble diameters are increased accompanied by a rise of the fuel temperature, the increase is inhibited by increasing the fuel pressure, and each bubble diameter of the bubbles is kept at a desired size. As a result, the prolongation of a crush time of the bubbles is prevented, and the fuel can be stably atomized. |
