Electronically controlled ignition system

Details Electronically controlled ignition system Electronically controlled ignition system

1982-07-12

1984-06-05

Cox, Ronald B.

Internal-combustion engines

High tension ignition system

Current or voltage sensing in coil primary

123630, 123609, 123335, F02P 100

Patent

active

044522207

ABSTRACT:
An ignition system has an electronic control unit which produces trigger pulses in response to received ignition control signals, the control unit also receiving test pulses indicating the period of time for which current supplied to the primary winding of the ignition coil is at its maximum value, the control unit extending the test pulses and supplying the extended pulses to a logic circuit which, when a trigger pulse occurs without an extended pulse simultaneously occurring, produces an output signal to indicate misfiring, and to temporarily switch off the control.

REFERENCES:
patent: 3601103 (1971-08-01), Swiden
patent: 3738340 (1973-06-01), Olson
patent: 3884203 (1975-04-01), Cliffgard
patent: 4082075 (1978-04-01), Davis
patent: 4173962 (1978-01-01), Rabus et al.

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