Internal-combustion engines – High tension ignition system – Power supply – ignition coil primary – and interrupter element...
Patent
1988-02-18
1989-04-04
Nelli, Raymond A.
Internal-combustion engines
High tension ignition system
Power supply, ignition coil primary, and interrupter element...
123149C, 123625, 123335, F02P 504, F02P 100, F02P 1100
Patent
active
048175773
ABSTRACT:
A magneto ignition system includes a rotating magnet driven past a primary winding for firing the engine. The magneto generates a speed dependent signal having a following current pulse and a leading current pulse of a smaller amplitude than the following pulse. A Darlington power transistor has a collector connected in series with a voltage dropping resistor or diode to the winding. A resistor bias circuit connects the primary winding to the input of the power transistor. A cut-off transistor is connected to by-pass the bias circuit of the Darlington power transistor and thereby generate a pulse in the primary winding. A timing capacitor is connected to the primary winding in series with a diode and charging resistor. A control transistor has its input circuit connected between the timing capacitor and the resistors of the bias circuit. The control transistor responds to the differential of the bias circuit voltage and the capacitor voltage, whereby the control transistor drives the cut-off transistor to turn off the power transistor during the decreasing side of the winding circuit after it peaks at starting and low speeds and progressively increases with a gradual advance during the starting speed range, and includes a maximum advance established prior to the peak current value.
REFERENCES:
patent: 3504373 (1970-03-01), Strelow
patent: 3938491 (1976-02-01), Mazza
patent: 4178892 (1979-12-01), Podrapsky et al.
patent: 4233951 (1980-11-01), Take
patent: 4329950 (1982-05-01), Orova et al.
patent: 4361129 (1982-11-01), Sugic et al.
patent: 4452199 (1984-06-01), Andreasson
patent: 4501256 (1985-02-01), Dykstra
patent: 4706640 (1987-11-01), Andraesson
patent: 4712521 (1987-12-01), Campen
Briggs & Stratton Corporation
Nelli Raymond A.
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