Ignition timing control

Details Ignition timing control Ignition timing control

F - Mech Eng,Light,Heat,Weapons

02

P

F02P 5/15 (2006.01) F02B 75/16 (2006.01) F02P 3/045 (2006.01)

Patent

CA 2139491

An electronic control system for an internal combustion single cylinder gas engine adapted to control the timing pulse for spark ignition by measuring the timing pulse width and the cycle time to compute an advance and/or dwell time from an LUT corresponding to engine conditions from a leading edge of the timing pulse to the optimum interrupt/turn on point in advance of TDC wherein precise timing of the spark advance throughout a wide range of engine speeds can be achieved whereby efficient burning of a lean air/fuel mixture in the combustion chamber of the engine can be achieved to minimize undesirable exhaust gas emissions and to increase the operating engine efficiency. Adaptive threshold is applied to a waveform shaping circuit to supp- ress electronic noise at higher engine speeds.

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