Igniter for an internal combustion engine

Details Igniter for an internal combustion engine Igniter for an internal combustion engine

1989-10-06

1990-08-21

Dolinar, Andrew M.

Internal-combustion engines

High tension ignition system

Current or voltage sensing in coil primary

123643, 315209T, F02P 305

Patent

active

049496972

ABSTRACT:
An engine igniter for a multi-cylinder engine has a plurality of power transistors for controlling the currents of corresponding ignition coils. The emitters of the power transistors are connected in common to a current sensing resistor. A differential amplifier amplifies the difference between the voltage across the current sensing resistor and a reference voltage. A current mirror circuit having a plurality of output terminals is driven by the output of the differential amplifier. Base current control transistors which control the base currents of the power transistors are controlled by the outputs of the current mirror circuit.

REFERENCES:
patent: 4750467 (1988-06-01), Neuhalfen
patent: 4836176 (1989-06-01), Fujino et al.

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