Patent ID: 6450157
Filing Date: 2002-09-17
Classification: F02D,F02P

Abstract:
An ignition control circuit, comprising:a first circuit producing first, second and third reference voltages; a capacitor; a second circuit responsive to a spark control signal to begin charging said capacitor; a third circuit responsive to a first mode control signal to enable an inhibit signal when a charge on said capacitor reaches said first reference voltage and to disable said inhibit signal when said charge on said capacitor reaches said second reference voltage; a fourth circuit responsive to a second mode control signal to enable said inhibit signal when said charge on said capacitor reaches said third reference voltage and to disable said inhibit signal when said charge on said capacitor reaches said second reference voltage; and a fifth circuit responsive to said inhibit signal to disable current flow through an ignition coil when said inhibit signal is enabled and to enable current flow through said ignition coil when said inhibit signal is disabled.