System for decreasing the power consumption in the output transi

Details System for decreasing the power consumption in the output transi System for decreasing the power consumption in the output transi

1979-07-02

1981-01-27

Argenbright, Tony M.

Internal-combustion engines

High tension ignition system

Current or voltage sensing in coil primary

123656, F02P 304

Patent

active

042468817

ABSTRACT:
When the current through the primary winding of an ignition coil of an ignition system in an internal combustion engine has increased to a predetermined value, base current for a power transistor connected in series with the coil is shunted away, causing a rise in voltage across the primary winding. When the voltage rise across the primary winding has reached a maximum allowable value less than the value required to cause the generation of a spark, the transistor is switched back to the fully conductive state. This cycle is repeated during the time the transistor would normally be conductive and terminates at the ignition time, that is at the time the transistor is blocked by the ignition timing circuit of the internal combustion engine to create the spark.

REFERENCES:
patent: 3575154 (1971-04-01), Taylor

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