Internal-combustion engines – High tension ignition system – Current or voltage sensing in coil primary
Patent
1978-12-27
1980-11-04
Argenbright, Tony M.
Internal-combustion engines
High tension ignition system
Current or voltage sensing in coil primary
123440, 315209T, F02P 304
Patent
active
042313481
ABSTRACT:
To prevent misfires, the current through an ignition coil is increased in response to an error signal indicating that the actual spark duration was less than a predetermined minimum spark duration. At the start of the spark, a capacitor is discharged at a known rate. The time required for the voltage across the capacitor to reach a predetermined level is the desired spark duration. This regulation of ignition current causes the spark duration to be very close to the minimum spark duration, thereby cutting losses in the apparatus.
REFERENCES:
patent: 4008696 (1977-02-01), Gartner
patent: 4106447 (1978-08-01), West
patent: 4153032 (1979-05-01), Chateau
Schiele Werner
Schleupen Richard
Argenbright Tony M.
Robert & Bosch GmbH
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