Patent ID: 6293757
Filing Date: 2001-09-25
Classification: F02D,F02M

Abstract:
A fluid pump control apparatus for pumping fluid from a fluid pump to a pressure accumulating chamber that holds pressurized fluid, the fluid pump control apparatus comprising:a first control means for setting a basic fluid pumping amount to be pumped by the fluid pump on a basis of a target value of pressure in the pressure accumulating chamber;a second control means for calculating a required fluid pumping amount required to adjust pressure on the pressure accumulating chamber from a present level to a target pressure;a setting means for setting a sum of a total required amount of fluid that includes the required fluid pumping amount calculated by the second control means and the basic fluid pumping amount of the fluid pump set by the first control means, as a set value of fluid pumping amount to be pumped by the fluid pump; anda carried-over amount setting means for, if the set value of the fluid pumping amount set by the setting means exceeds a predetermined fluid pumping amount of the fluid pump, setting a carried-over amount of fluid by which the set value of the fluid pumping amount exceeds the predetermined fluid pumping amount, the carried-over amount of fluid being carried over to a next setting of the fluid pumping amount wherein the entire required fluid pumping amount not supplied by a first fluid pumping stroke, is carried over to be supplied by a next fluid pumping stroke by summing the carried-over amount of fluid in combination with a base fuel pumping amount.