Patent ID: 6575134
Filing Date: 2003-06-10
Classification: F02D,F02P

Abstract:
A controller for a capacitive discharge ignition system comprising:a first output connectable to a spark coil for producing an ignition spark for an internal combustion engine; a capacitor; a first switch connected to said capacitor and said output, said first switch having a trigger input for receiving a trigger pulse wherein said first switch transistions from a non-conducting state to a conducting state upon receiving said trigger pulse to discharge said capacitor through said first output; a speed sensor for detecting the speed of an engine, said speed sensor having an output indicative of the speed of said engine; and a second switch connected to said trigger input, said second switch responsive to said output indicative of speed such that when the speed of the engine is below a threshold speed, said second switch is in a first state wherein said trigger pulse will be received by said trigger input and when the speed of the engine is above said threshold speed, said second switch is in a second state wherein said trigger pulse will not be received by said trigger input.