Control method of magnetic solenoid valve

In an electromagnetically controlled inlet valve actuator 200 provided to a high pressure fuel pump, an impinging sound which is generated at the time of operating the mechanism is reduced. In a high pressure fuel pump provided with an electromagnetically controlled inlet valve, a current supply period includes a 1st current supply period for performing an operation of attracting a plunger rod 201 in a valve closing direction, a 2nd current supply period for alleviating a speed at which the plunger rod 201 moves in a valve opening direction, and a limited current supply period disposed between the 1st current supply period and the 2nd current supply period in the form of spanning a pump top dead center. Due to such a constitution, a moving distance and an impingement speed of the plunger rod 201 can be reduced so that noises can be reduced with high accuracy. Further, by providing the limited current supply period, a heating value and power consumption of the system can be reduced.