Ignition system for a two-cycle engine

Details Ignition system for a two-cycle engine Ignition system for a two-cycle engine

1981-09-10

1983-10-18

Cox, Ronald B.

Internal-combustion engines

Engine speed regulator

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

123198F, F02P 900

Patent

active

044099380

ABSTRACT:
An improved solid-state ignition system for a two-cycle internal combustion engine that increases scavenging and improves the smoothness of the engine during light load and low speed operation. A switch connected to the throttle valve is operative to enable a switching circuit at low throttle settings which in turn is adapted to inhibit in accordance with the firing order of the engine, the firing of each cylinder every other period so that the number of explosions is reduced by half while the intervals between explosions is maintained uniform. The switching circuit is connected to the control gates of the switching elements which control the flow of primary current to the ignition coil for each cylinder. When enabled, the switching circuit functions by periodically shorting the ignition signal applied to the gate of each switching element so that each switching element is responsive to only every second firing pulse produced by its respective sensing coil.

REFERENCES:
patent: 3868928 (1975-03-01), Kishimoto
patent: 3974805 (1976-08-01), Kondo
patent: 3985109 (1976-10-01), Kondo
patent: 4252095 (1981-02-01), Jaulmes

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