Patent ID: 8726883

Claim:
An ignition control device for use with a light duty gasoline engine, which controls a spark plug to generate a spark for ignition of the light duty gasoline engine, wherein said ignition control device comprises: a charge coil configured to induce a first alternating current signal with rotation of a fly wheel, the surface of said fly wheel comprising a magnetic steel; a transformer comprising a primary ignition coil and a secondary ignition coil, wherein said secondary ignition coil is connected with said spark plug; an electric-spark-generating control circuit configured to receive said rectified first alternating current signal and apply a first signal to said primary ignition coil in response to an ignition signal, wherein said secondary ignition coil induces a second signal to control said spark plug to generate a spark; a trigger coil configured to induce a second alternating current signal with rotation of said fly wheel; a position sensing circuit configured to shape the positive signal and the negative signal of said second alternating current signal respectively to generate a first position signal and a second position signal, and provide said first position signal and said second position signal to a micro-controller; the micro-controller configured to determine an ignition moment according to said first position signal to provide said ignition signal to said electric-spark-generating control circuit, and further configured to determine whether said engine is in reverse rotation according to said first position signal and second position signal and control a spark plug to stop igniting if said engine is rotating reversely.