Patent ID: 6024072
Filing Date: 2000-02-15
Classification: F02D

Abstract:
A fuel pump control apparatus for controlling a fuel pump supplying fuel to a fuel injection nozzle of an engine, said fuel pump control apparatus comprising:target fuel pressure computing means for computing a target fuel pressure on the basis of an operating state of said engine;change detecting means for detecting whether or not said target fuel pressure has changed;steady state control means which is used for determining a control quantity of said fuel pump on the basis of a pressure of said fuel supplied to said fuel injection nozzle and said target fuel pressure when said target fuel pressure is found unchanged;transient state control means which is used for determining said control quantity of said fuel pump by adopting a method different from that of said steady state control means when said target fuel pressure is found changed; andwherein said transient state control means sets said control quantity at a maximum or minimum value.