IGNITION DEVICE FOR INTERNAL COMBUSTION ENGINE

PROBLEM TO BE SOLVED: To execute the complete igniting operation collectively even if the accidental misfire exists, and realize the complete combustion, by performing the continuous igniting operation during a period from a top dead center to a bottom dead center of a piston. SOLUTION: In a phase control part 17, an ignition period and an ignition time of each ignition plug 11 are determined. On this occasion, the control is performed so that the ignition is continuously performed from the maximum point where the fuel in a cylinder 10 is compressed by a piston 22, that is, a top dead center of the piston 22 or the neighborhood thereof, to a bottom dead center of the piston 22 or the neighborhood thereof. A pulse wave-shaped signal is continuously generated in the top dead center on the basis of an oscillation signal generated from a transistor oscillating part 16 under the control of the phase control part 17, and the electric current supplied to the primary side coil 14 of an ignition coil 13, is cut off in the shape of pulse wave. Whereby the high voltage is generated on the secondary side coil 15, and the same are continuously repeated to the position of the bottom dead center, to make the ignition plug 11 continuously discharge.