Internal combustion engine semi-conductor ignition control syste

Details Internal combustion engine semi-conductor ignition control syste Internal combustion engine semi-conductor ignition control syste

1976-09-20

1978-03-07

Cox, Ronald B.

Internal-combustion engines

Igniters

Incandescent

315209T, F02P 100

Patent

active

040773795

ABSTRACT:
To prevent generation of a spurious spark at the spark plug if the distributor braker control assembly should have commanded an ignition control transistor to be conductive and when the ignition switch is disconnected under those conditions, thus cutting off power to the ignition control transistor rendering it non-conductive and causing spurious voltage pulses which results in a spark at the ignition, a control path is provided connected to a control transistor for the actual ignition transistor and connected in circuit with the current flow due to the energy stored in the ignition coil to control the emitter-collector path of the ignition switching transistor to continue to remain conductive for a short period of time to drain off the stored energy in the coil, although the main ignition switch has been opened.

REFERENCES:
patent: 3745985 (1973-07-01), Hohne
patent: 3854466 (1974-12-01), Steinberg

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