Patent ID: 7240666

Claim:
A high-pressure fuel pump control device for an engine comprising a fuel injector valve for directly injecting fuel in a common rail into a combustion chamber and a high-pressure fuel pump for feeding the fuel under pressure to said common rail, said high-pressure fuel pump comprising a pressurization chamber, a plunger for pressurizing the fuel in said pressurization chamber at an inlet of the high-pressure fuel pump, a fuel passage valve disposed in said pressurization chamber, and an actuator for actuating said fuel passage valve, wherein said control device includes a control unit for executing output control of a drive signal for said actuator to vary a discharge rate of said high-pressure fuel pump and the fuel passage valve is in an open state when the actuator is not energized, and said control unit starts outputting of the actuator drive signal during a period from operation start to a point in time at which the actuator drive signal is able to be output in a predetermined crank angle phase, and sets timing of stopping the outputting of the actuator drive signal based on fuel pressure in said common rail, wherein the fuel passage valve is arranged to remain closed even the actuator is turned off depending upon pressure in the pressurizing chamber.