Patent ID: 7757667
Filing Date: 2010-07-20
Classification: F02D,F02M,F04B

Abstract:
1. A control device for controlling a fuel pump having a pressure chamber, a plunger for pressurizing the fuel in said pressure chamber, a fuel passage for feeding the fuel to said pressure chamber, a fuel valve for opening or shutting said fuel passage, a mechanism for generating a driving force in a direction that opens said fuel valve, and an actuator for driving in the opposite direction to said driving force by energizing a solenoid coil, wherein said control device has an actuator driver for controlling the driving of said actuator, and said actuator driver restricts an end timing of the drive signal of said actuator so that an attraction force of said solenoid coil is not maintained at the bottom dead center of said plunger in case that the required discharge to said fuel pump is less than the total discharge.