Patent ID: 7506634

Claim:
An ignition timing control circuit for use with an internal combustion engine, comprising: a first sensor, wherein said first sensor produces a first set of one or more pulses as said engine's flywheel passes a first reference angular position; a second sensor, wherein said second sensor produces a second set of one or more pulses as said engine's flywheel passes a second reference angular position; an RPM detector circuit coupled to at least one of said first sensor and said second sensor, wherein said RPM detector circuit converts at least one of said first set of one or more pulses from said first sensor and said second set of one or more pulses from said second sensor into a measure of the rotational speed of said flywheel; a timing advance circuit coupled to said RPM detector circuit and coupled to at least one of said first sensor and said second sensor, wherein the temporal delay between the activation of the output of said timing advance circuit and one of said first set of one or more pulses from said first sensor and said second set of one or more pulses from said second sensor is a function of said measure of the rotational speed of said flywheel; a switching device coupled to said timing advance circuit, wherein said switching device is activated by said output of said timing advance circuit, this activation initiating delivery of energy to at least one fuel igniter in said engine.