Patent ID: 6257216
Filing Date: 2001-07-10
Classification: F02P

Abstract:
A device for suppressing undesired ignitions in a spark ignition engine, comprising:a voltage source having a positive pole and a negative pole;an ignition switch having a base and a collector;at least one spark plug;an ignition coil having a primary winding and a secondary winding, said secondary winding connected to said spark plug, said primary winding and said ignition switch connected in series between said positive pole and said negative pole;a control circuit for switching said ignition switch;a first resistor connecting said control circuit to said base;a second resistor having a first terminal and a second terminal, said second terminal connected to said negative pole;a capacitor having a first terminal connected to said collector and a second terminal connected to said first terminal of said second resistor; anda diode for conducting a current away from said base, said diode connected between said second terminal of said capacitor and said base.