Processor controlled discharge ignition with fixed firing angle at startup
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United States of America Patent
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Oct 5, 2004
Grant Date -
Sep 25, 2003
app pub date -
Mar 10, 2003
filing date -
Mar 12, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An ignition apparatus for use with an internal combustion engine to produce an electrical spark at a spark ignition device. The ignition apparatus includes triggering circuitry having a processor with stored timing data. The processor receives a signal indicative of the rotational position of the magnet and generates a triggering signal. The triggering circuitry switches between a first mode wherein the triggering signal occurs at a fixed time relative to top dead center and a second mode wherein the triggering signal occurs at a variable time relative to top dead center based on the stored timing data.
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