Supply voltage variation compensated ignition system for an inte

Details Supply voltage variation compensated ignition system for an inte Supply voltage variation compensated ignition system for an inte

1977-12-29

1980-01-29

Argenbright, Tony

Internal-combustion engines

Igniters

Incandescent

F02P 304

Patent

active

041856031

ABSTRACT:
To operate an ignition control transistor, connected into the primary ignition coil under minimum saturation condition regardless of voltage level of the supply voltage, delivered, for example, from the battery of an automotive vehicle, at least one timing circuit is connected to the voltage supply to have a timing interval which varies as a function of supply voltage, the timing interval controlling the duration of current flow through the transistor as a function of supply voltage so that the transistor will be conductive for the required time to store magnetic energy in the coil, though not for an excessively long period of time regardless of the level of supply voltage within the limits normally experienced in automotive ignition systems.

REFERENCES:
patent: 3666989 (1972-05-01), Boyer
patent: 3841288 (1974-10-01), Korteling
patent: 3881458 (1975-05-01), Roozenbeek et al.
patent: 3937193 (1976-02-01), Kim

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