| 摘要 |
PURPOSE:To improve ignitionability, by constituting an ignition coil from three primary coils and two secondary coils and connecting three ignition plugs with the two secondary coils so as to enable the three ignition plugs per one cylinder to be discharged by the single ignition coil. CONSTITUTION:Each cylinder provides each power circuit 18a-18d, and its power is respectively supplied from a DC-DC converter 3. And a trigger signal generating circuit 9, supplying a trigger signal, sparks three ignition plugs 171-173 provided in each cylinder. Each power circuit 18a-18d provides an ignition coil 160 comprising three primary coils 161-163, two secondary coils 164, 165 and two iron cores 166, 167 winding each coil. And each electric circuit of the primary coil 161 and a capacitor 131, primary coil 162 and the capacitor 131 and the primary coil 163 and the capacitor 131, respectively connecting a thyristor 101, 111, 121, can be electrified to be controlled. |
