Patent ID: 8893692

Claim:
A method for ignition for internal combustion engines with an ignition coil ( 3 ) with the primary circuit (P) and secondary circuit (S) and a spark plug ( 5 ) provided in the secondary circuit (S), wherein the ignition current is a pulse signal which is controlled by pulse width modulation in the primary circuit (P), wherein the method comprises: measuring the primary current actually in the primary current circuit (P), comparing the measured primary current with a predetermined target current, and readjusting the pulse width modulation and/or a frequency modulation of the pulse signal in the primary circuit (P) based on the comparison result, in order to achieve the desired current, and wherein an instantaneous flyback current induced in the ignition coil ( 3 ) is measured, and the instantaneous primary current and the instantaneous flyback current are added to give a total current, and the total current is compared with the predetermined target ignition current.