Patent ID: 6606978
Filing Date: 2003-08-19
Classification: F02D,F02M

Abstract:
A fuel injection apparatus of an internal combustion engine, comprising:a valve body movably disposed for back and forth movement in a fuel passage to open and close a fuel injection hole of the fuel injection apparatus; an armature attached to the valve body; a valve-opening solenoid coil that drives the armature in a valve-opening direction; a valve-closing solenoid coil that drives the armature in a valve-closing direction; and a controller that sets an overlap time, which is a time by which starting of electrifying of the valve-closing solenoid coil precedes stopping of electrifying of the valve-opening solenoid coil, and that controls the solenoid coils in accordance with a fuel pressure supplied to the fuel injection apparatus such that a valve-closing force on the valve body does not exceed an open valve holding force on the valve body prior to the time when stopping of the electrifying of the valve-opening solenoid coil occurs.