| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel injection device of an internal combustion engine for improving accuracy of an injection amount of the fuel. <P>SOLUTION: The fuel injection device of an internal combustion engine includes a fuel injection valve in which opening and closing is controlled by a working fluid, and a working fluid supply device that supplies the working fluid to the fuel injection valve. The fuel injection valve includes: a pressure control chamber for reserving the working fluid; a control valve for opening and closing the pressure control valve; a solenoid actuator for driving opening and closing of the control valve; and a needle valve for opening and closing a nozzle hole to inject the fuel. The fuel injection valve is configured in such a manner that the control valve is opened by energizing the solenoid actuator, which reduces the pressure in the pressure control chamber and moves the needle valve to inject the fuel. The pressure of the fuel supplied to the fuel injection valve and the pressure of the working fluid are detected, and an energizing time of the solenoid actuator is adjusted based on the pressure of the fuel and the pressure of the working fluid. <P>COPYRIGHT: (C)2013,JPO&INPIT |
