PURPOSE: To provide an ignition device with a misfire detector the constitution of whose device and maintenance is simple and which can detect misfire accurately, in the case of a DLI(distributor less igniter) type ignition device.
CONSTITUTION: In the case of a DLI type ignition device consisting of a power source 2, an ignition coil 1, a spark plug 3 and an ignition coil primary electric current intermittence means 4, an ignition device with a misfire detector is provided with a primary electric current rise-up delay circuit 5 at an ignition coil primary circuit. An ion electric current power source 6 consisting of a diode 64 and a condenser 61, and an ion electric current detecting circuit 7 are fitted to the secondary circuit of the ignition coil. Also, in the case of an ignition device with a flying spark mistake and misfire detector, a condenser 61 charging electric current and discharging electric current detecting circuit 8 is fitted in addition to the above.
YOSHIDA HIDEJI
MATSUBARA YOSHIHIRO
ITO YASUO
