Patent ID: 6622705
Filing Date: 2003-09-23
Classification: F01L,F02D,F02M

Abstract:
A method for operating a fuel injector for a fuel injection system of an internal combustion engine, the fuel injector including a magnetic coil, an armature acted upon in a closing direction by a resetting spring, and a valve needle, frictionally connected to the armature, for actuating a valve-closure member which, together with a valve-seat surface, forms a sealing seat, the method comprising:exciting the magnetic coil with a basic current intensity during an opening phase of the fuel injector; exciting the magnetic coil with a current pulse before an end of the opening phase and after the exciting of the magnetic coil with the basic current, the current pulse having an intensity that is greater than an intensity of the basic current; and switching off current exciting the magnetic coil at an end of the opening phase.