Patent US3741183A successfully refreshed from Google Patents.
US3741183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacitor discharge ignition system
Assignee: Individual
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Filing: 1969-12-22
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Granted: 1973-06-26
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Expires: 1989-12-22
Abstract
Abstract An improved capacitor discharge ignition system for internal combustion engines, wherein the ignition system utilizes a discharge capacitor power source placed in shunt with the primary winding of a transformer which automatically turns off upon saturation thereof so that the magnetic field collapses and the secondary winding of the transformer produces a pulse current to charge the capacitor. The capacitor is subsequently placed in shunt with the primary winding of a pulse transformer so that the secondary winding thereof delivers a high voltage spark to the distributor and ultimately the spark plugs of an engine. In the ignition system of this invention the capacitor discharge sequence and the transformer charging sequence are commenced simultaneously so that a maximum number of sparks are capable of being produced in the minimum amount of time.
Inventors
- 👤 T Sturm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:16
CPC Classifications
F; F02; F02P; F02P3/00; F02P3/06; F02P3/08; F02P3/0876; F02P3/0884
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
389 words
A capacitor discharge ignition system for an internal combustion engine, the combination including, a spark producing circuit having an ignition capacitor, discharging means coupled to said ignition capacitor for discharging the same in synchronism with the engine to produce sparking pulses, said discharging means being activated by the application of a trigger pulse thereto, said discharging means including a semiconductive controller rectifier connected in series with said ignition capacitor, charging means coupled to said ignition capacitor for recharging said capacitor between discharges thereof, said charging means including a saturable pulse transformer means having primary winding means, feedback winding means and secondary winding means, for providing a charging pulse to said ignition capacitor upon the application of a trigger pulse to said transformer means, said charging means including a transistor means connected in series with the primary winding of said saturable transformer means, triggering means coupled to said charging means and said discharging means for simultaneously providing trigger pulses to said charging means and said discharging means so that said charging means is activated simultaneously with the discharging means, said triggering means including capacitor means connected to ground, transistor means coupled with said discharging and said charging means, said transistor means including a first transistor means and a second transistor means, said first transistor means having its collector electrode connected to the base electrode of said second transistor means, said second transistor means having its emitter electrode connected to said capacitor means, its collector electrode connected to the semi-conductive controlled rectifier of of said discharging means and its base electrode connected to the transistor of the said charging means, diode means coupled with said discharging means and said chargning means, said diode means including a first diode means interconnected between the emitter electrode of the first transistor and the emitter electrode of the second Transistor whereby the cathode electrode of said first diode means is connected to the emitter electrode of the first transistor, and second diode means interconnected between the base electrode of the second transistor and the collector electrode of the first transistor whereby the cathode electrode of said second diode means is connected to the collector electrode means of the first transistor, and signal means for producing a command pulse coupled to the said first transistor means of the triggering means for providing said simultaneous trigger pulses.
Claim 2
Dependent Claim
389 words
A capacitor discharge ignition system for an internal combustion engine, the combination including, a spark producing circuit having an ignition capacitor, discharging means coupled to said ignition capacitor for discharging the same in synchronism with the engine to produce sparking pulses, said discharging means being activated by the application of a trigger pulse thereto, said discharging means including a semiconductive controller rectifier connected in series with said ignition capacitor, charging means coupled to said ignition capacitor for recharging said capacitor between discharges thereof, said charging means including a saturable pulse transformer means having primary winding means, feedback winding means and secondary winding means, for providing a charging pulse to said ignition capacitor upon the application of a trigger pulse to said transformer means, said charging means including a transistor means connected in series with the primary winding of said saturable transformer means, triggering means coupled to said charging means and said discharging means for simultaneously providing trigger pulses to said charging means and said discharging means so that said charging means is activated simultaneously with the discharging means, said triggering means including capacitor means connected to ground, transistor means coupled with said discharging and said charging means, said transistor means including a first transistor means and a second transistor means, said first transistor means having its collector electrode connected to the base electrode of said second transistor means, said second transistor means having its emitter electrode connected to said capacitor means, its collector electrode connected to the semi-conductive controlled rectifier of of said discharging means and its base electrode connected to the transistor of the said charging means, diode means coupled with said discharging means and said chargning means, said diode means including a first diode means interconnected between the emitter electrode of the first transistor and the emitter electrode of the second Transistor whereby the cathode electrode of said first diode means is connected to the emitter electrode of the first transistor, and second diode means interconnected between the base electrode of the second transistor and the collector electrode of the first transistor whereby the cathode electrode of said second diode means is connected to the collector electrode means of the first transistor, and signal means for producing a command pulse coupled to the said first transistor means of the triggering means for providing said simultaneous trigger pulses.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |