| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an ignition system for an internal combustion engine, maintaining discharge regardless of a load state between ignition plug electrodes. Ž<P>SOLUTION: The ignition system for an internal combustion engine includes: a plurality of ignition coils for an internal combustion engine each constituted by magnetically coupling a primary coil and a secondary coil with an iron core; a state determination circuit determining a state of an engine; and a ignition control signal timing/supply destination selecting circuit selecting an ignition control signal and supply destination, from a signal of the state determination circuit and a discharge signal acquired by discharge currents passing in the secondary coil of the ignition coil. Since the discharge currents flowing in the secondary coil are detected and are coded to drive the ignition coil, the electric discharge can be maintained regardless of the load state between ignition plug electrodes. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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