Ignition control device for use with light duty gasoline engine and method of suppressing reverse rotation of the engine
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United States of America Patent
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May 20, 2014
Grant Date -
Feb 3, 2011
app pub date -
Mar 4, 2010
filing date -
Jul 28, 2009
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Abstract
An ignition control device and corresponding method are provided for suppressing reverse rotation of the engine during startup process of a light duty gasoline engine, the ignition control device includes: a charge coil, a transformer, an electric-spark-generating control circuit, a trigger coil, a position sensing circuit, and a micro-controller. The position sensing circuit is used to shape the positive signal and negative signal of the second alternating current signal induced by the trigger coil while the fly wheel rotates respectively to generate a first position signal and a second position signal. According to the first position signal and the second position signal, it is determined by the micro-controller whether the engine is in the state of reverse rotation, and if YES, output of the ignition signal is stopped to make engine halt due to absence of reverse power.
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