Contactless ignition system
Abstract
Abstract AN IGNITION SYSTEM FOR ALTERNATELY FIRING TWO SPARK PLUGS IN AN INTERNAL COMBUSTION ENGINE. A ROTOR IS USED TO MODULATE THE OUTPUT SIGNAL OF AN OSCILLATOR, WHICH IN TURN TRIGGERS A BISTABLE DEMODULATOR TO PRODUCE A SQUARE WAVE SYNCHRONIZED WITH THE ENGINE. THE SQUARE WAVE IS USED TO ALTERNATELY FIRE TWO SILICON CONTROLLED RECTIFIERS FOR ALTERNATELY DISCHARGING A STORAGE CAPICITOR THROUGH THE PRIMARY WINDINGS OF TWO IGNITION TRANSFORMERS, ELIMINATING THE NEED FOR A HIGH VOLTAGE DISTRIBUTOR. A CHARGING CIRCUIT IS TRIGGERED TO RECHARGE THE CAPICITOR EACH TIME IT IS DISCHARGED. THE MAXIMUM RATE AT WHICH THE CHARGING CIRCUIT CAN OPERATE IS LIMITED, THEREBY ACTING AS A GOVERNOR TO LIMIT MAXIMUM ENGINE SPEED.
Inventors
- 👤 James T Hardin
- 👤 William J Roberts
- 👤 Maximillian Kusz
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |