| 摘要 |
PROBLEM TO BE SOLVED: To provide a variable delivery rate fuel supplying system capable of stably controlling a fuel pressure without being influenced by dispersion of control of a solenoid valve, and preventing a rise of coil temperature. SOLUTION: This device is provided with injection valves 1a to 1d for injecting fuel to each cylinder in an internal combustion engine, a fuel pump 3 for delivering pressurizing fuel from a delivery valve 27 by sucking and pressurizing fuel from a fuel intake passage 25 into a pressurizing chamber 17 through an intake valve 26, the solenoid valve 28 which is disposed in a relief passage 31 for communicating the fuel intake passage 25 and the pressurizing chamber 17 of a fuel pump 3 and for controlling a delivery rate of fuel by relieving pressurized fuel in the pressurizing chamber 17 at the time of opening the valve, and a control unit 13 for applying a valve opening signal to the solenoid valve 28. The valve opening signal applied from the control unit 13 to the solenoid valve 28 is completed at a prescribed position extending from a top dead center during an intake stroke between the top dead center and the bottom center of a plunger 15. |
