Electronic ignition system

Details Electronic ignition system Electronic ignition system

1993-11-22

1996-06-18

Dolinar, Andrew M.

Internal-combustion engines

Engine speed regulator

Engine speed reduction by partial or complete omission of...

123632, 123198DC, F02P 1102

Patent

active

055267858

ABSTRACT:
An electronic ignition system replacing corresponding stock circuitry but utilizing the stock magneto and ignition coil provided with the engine of a sport vehicle, such as a jet ski or snowmobile, to provide improved performance. A timing circuit is provided as part of the ignition circuitry to enable a trigger pulse of a predetermined duration to be delivered to the ignition coil and further, to inhibit subsequent trigger pulses limiting the engine speed below a determined rpm limit. The timing circuitry uses an over-temperature switch connecting a capacitance to lengthen the inhibit time period reducing the maximum rpm limit. A holeshot switch connected across the over-temperature switch lowers the rpm limit while the throttle is held in the full speed position. Compensated pickup circuitry, automatic battery connect/disconnect, low impedance kill switch circuitry and an impedance protected tachometer output is provided to enhance the performance and features of the ignition systems of sport vehicles.

REFERENCES:
patent: 3762383 (1973-10-01), Richards et al.
patent: 4153850 (1979-05-01), Boyer
patent: 4368717 (1983-01-01), Roberts et al.
patent: 4459951 (1984-07-01), Tobinaga et al.
patent: 4566425 (1986-01-01), Nitou et al.
patent: 4976234 (1990-12-01), Okuda
patent: 5085191 (1992-02-01), Okuda
patent: 5138995 (1992-08-01), Erhard

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