Patent ID: 6679237
Filing Date: 2004-01-20
Classification: F02D,F02P

Abstract:
An apparatus for an inductive ignition system having a plurality of ignition coils each with a primary winding, said apparatus comprising:a respective silicon-controlled rectifier (SCR) connected to each primary winding and controlled into conduction by a respective gating sigmal; a driver device connected to the silicon-controlled rectifiers and configured to conduct a respective primary current in response to a drive signal; a control circuit configured to generate said Bating signals and said drive signal, wherein said control circuit is responsive to an ignition control signal for generating said gating signals and said drive signal; wherein said ignition control signal controls production of a spark voltage on a secondary winding of each ignition coil, said ignition control signal comprising a plurality of electronic spark timing (EST) signals, said control circuit including an OR-logic gate having an output terminal on which said drive signal is generated responsive to said EST signals, said control circuit further including second output terminals on which said gating signals are produced.