Ignition device for internal combustion engine
Abstract
Abstract A CHANGE OF PREDETERMINED POLARITY ACCUMULATED ON A CAPACITOR BY A DC SOURCE DISCHARGES IN OSCILLATORY MODE INTO AN IGNITION COIL THROUGH A THYRISTOR GATED AT EACH IGNITION TIME OF THE ASSOCIATED ENGINE FOR IGNITION PURPOSE. IN THE DISCHARGE, A VOLTAGE SUCCEEDINGLY APPEARING ACROSS THE CAPACITOR OF A LOWER MAGNITUDE WITH OPPOSITE POLARITY CAUSES A VOLTAGE DROP ACROSS A DIODE AND A VOLTAGE DROPPER SUCH AS AN INDUCTANCE OR A ZENER DIODE SERIALLY CONNECTED ACROSS THE THYRISTOR TO RENDER IT NONCONDUCTING. THE THYRISTOR IS NOW READY FOR THE SUCCEEDING IGNITION OPERATION AND THE CAPACITOR IS AGAIN CHANGED BY THE SOURCE. FOR A MULTIPLE-CYLINDER ENGINE, EACH IGNITION PLUG INVOLVED IS ASSOCIATED WITH THE INDIVIDUAL IGNITION COIL, THYRISTOR AND DIODE WHILE THE CAPACITOR AND THE VOLTAGE DROPPER ARE USED IN COMMON WITH ALL THE PLUGS.
Inventors
- 👤 Takao Miki
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |