Engine ignition control apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Nov 5, 2013
Grant Date -
Sep 30, 2010
app pub date -
Mar 2, 2010
filing date -
Mar 25, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
When cranking starts by turning on a starter switch 14, the ignition timing is first corrected to a fixed value on a retard side. When an IACV 6 reaches a fully opened position, the ignition timing is corrected to the retard side once, and thereafter corrected to an advance side. The correction to the advance side is performed in accordance with a difference between the number of idling target steps and the current number of steps, and the amount of advance correction is reduced as the difference is reduced. Upon completion of the initialization of the IACV 6, the ignition timing correction amount is then restored to the initial value by increasing the amount of advance by a predetermined amount in a stepwise manner.
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