Patent ID: 6049176
Filing Date: 2000-04-11
Classification: F02P

Abstract:
An ignition device for an internal combustion engine comprising:an ignition coil comprised of a primary coil to which an ignition command signal is applied and a secondary coil which generates an induced voltage based upon the ignition command;a series connection of a current attenuating means for attenuating the current that flows through said primary coil and a switching means for connecting and disconnecting said current attenuating means and said primary coil, said series connection being connected in parallel with said primary coil;means for detecting an ionic current that flows across a pair of electrodes installed in a combustion chamber of the engine through ions generated during combustion; anda control means for disconnecting said switching means while the current is being supplied to said primary coil and for connecting said switching means while said secondary coil is being discharged.