Patent ID: 6484692
Filing Date: 2002-11-26
Classification: F02P

Abstract:
An ignition control system comprising:engine speed detecting means for calculating an engine speed according to an engine crank angle sensor signal; current supply start control means for outputting a proper current supply start timing signal corresponding to the engine speed to an ignition coil; current supply finish control means for outputting a proper current supply finish timing signal corresponding to the engine speed to the ignition coil; ignition coil control means for controlling supply of current to the ignition coil according to the signals outputted from said current supply start control means and said current supply finish control means; and overspeed determination means for outputting an overspeed determination signal when determining that the engine speed calculated by said engine speed detecting means is in excess of a predetermined limit value, wherein said current supply finish control means resets a timing for finishing the supply of current to the ignition coil being supplied with current to a timing on and after a time indicated by the current supply finish timing signal to thereby inhibit engine from revolving.