HIGH-FREQUENCY IGNITION DEVICE

PROBLEM TO BE SOLVED: To solve such a problem that distortion occurs in current of the reverse direction of a diode when the current of frequency that is half-cycle longer than a reverse recovery time is caused to flow in such a configuration that the diode for back flow prevention is provided on an...

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Bibliographische Detailangaben
Hauptverfasser:	FUKUMURA YOSHIYUKI, SHIMAKAWA HIDEAKI, OKUMURA FUMIO
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS BLASTING COMBUSTION ENGINES CORONA DEVICES ELECTRICITY GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS IGNITION, OTHER THAN COMPRESSION IGNITION, FORINTERNAL-COMBUSTION ENGINES LIGHTING MECHANICAL ENGINEERING OVERVOLTAGE ARRESTERS USING SPARK GAPS SPARK GAPS SPARKING PLUGS TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To solve such a problem that distortion occurs in current of the reverse direction of a diode when the current of frequency that is half-cycle longer than a reverse recovery time is caused to flow in such a configuration that the diode for back flow prevention is provided on an ignition device, wherein the reverse recovery time is defined as a time for discharging charges to be necessarily discharged before the diode blocks the reverse current when being switched from the conduction state to the shielding state.SOLUTION: A capacitor for protection which passes AC current from a high frequency ignition coil and does not pass DC current from the ignition coil is disposed on the winding starting side or/and the winding ending side of a secondary coil of a high-frequency ignition coil. Therein, in a switching element for high-frequency, the frequency of an ignition signal is set to be 100 kHz or less and, in the capacitor for protection, the breakdown voltage is set to be 30 kV or more.