Patent ID: 6298837
Filing Date: 2001-10-09
Classification: F02P

Abstract:
A method for energy control on an ignition system for an internal combustion engine having an ignition coil or an ignition transformer whose primary winding can be short circuited by means of a switch called a short-circuit switch; the ignition coil forming the ignition voltage and having a primary winding and a secondary winding; the method comprising the steps of:measuring an ion current with the secondary winding of the ignition coil with at least one spark plug;detecting the primary current in the short-circuit phase of the short-circuit switch and transmitting the measuring quantity to the control unit;processing the measuring quantity after actuation of the short-circuit switch in the form of a function or filtering in the control unit to a feature; and,building up an energy control with said feature via a closure time or a closure angle.