| 摘要 |
PROBLEM TO BE SOLVED: To prevent a flaw caused by the magnetic saturation of a primary coil 3 at a time of inputting electric energy from a capacitor 13 to the primary coil 3.SOLUTION: ON-OFF states of energy input switching means 20 are controlled so that a maximum value of a discharge current of a capacitor 13 detected by primary-side current detection means 24 provided on an earth ground of the capacitor 13 does not exceed a preset first control value Y1 determined from the magnetic saturation of a primary coil 3. It is thereby possible to avoid the magnetic saturation of the primary coil 3 and improve the reliability of an igniter mounting therein an energy input circuit 6. |
