| 摘要 |
An ignition device for an internal combustion engine, said ignition device being equipped with a primary ignition CDI circuit and an energy input circuit. The primary ignition CDI circuit has a primary ignition booster circuit that boosts the battery voltage, and a primary ignition capacitor that stores a charge the voltage of which has been boosted by the primary ignition booster circuit, with the charge stored by the primary ignition capacitor being discharged to the primary coil of an ignition coil, thereby generating a spark discharge in a spark plug. The energy input circuit has an energy input booster circuit that boosts the battery voltage, and an energy input capacitor that stores a charge the voltage of which has been boosted by the energy input booster circuit, and during a spark discharge initiated by the operation of the primary ignition CDI circuit, the charge stored in the energy input capacitor is discharged to the primary coil and a secondary current in the same direction flows through the secondary coil of the ignition coil, thereby prolonging the spark discharge initiated by the operation of the primary ignition CDI circuit. |
