Ignition system for an internal combustion engine

Details Ignition system for an internal combustion engine Ignition system for an internal combustion engine

1982-10-13

1984-05-15

Nelli, Raymond A.

Internal-combustion engines

High tension ignition system

Having specific trigger circuitry

123630, F02P 900, F02P 304

Patent

active

044481802

ABSTRACT:
A timing wave generator 26 provides the same input to two threshold switches that switch on at approximately the same time but have different switching hysteresis. The switch with the smaller hysteresis can affect ignition timing only through a delay circuit while the other can do so directly. If the engine stalls the delay circuit will assure that the primary current is shut off in a short time. In normal operation the large hysteresis of one of the threshold switches is in control and provides insensitivity to disturbance, but during startup the characteristics of the delay circuit can provide the appropriate ignition timing.

REFERENCES:
patent: 4137885 (1979-02-01), Van Ostrom
patent: 4202304 (1980-05-01), Jundt et al.
patent: 4217874 (1980-08-01), Sobner et al.
patent: 4265204 (1981-05-01), Jundt et al.
patent: 4271812 (1981-06-01), Bodig et al.
patent: 4351310 (1982-09-01), Adler et al.
patent: 4356808 (1982-11-01), Bodig et al.
patent: 4391262 (1983-07-01), Schleupen

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