Ignition apparatus
Number of patents in Portfolio can not be more than 2000
United States of America
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Apr 27, 2021
Grant Date -
Nov 12, 2020
app pub date -
Feb 27, 2020
filing date -
Feb 27, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
To provide an ignition apparatus which can turn on and off the sub primary coil according to extension degree of the discharge path of the spark discharge. An ignition apparatus is provided with an ignition coil that is provided with a main primary coil, a sub primary coil which generates energization magnetic flux of a direction opposite to the energization magnetic flux of the main primary coil, and a secondary coil which is magnetically coupled with the main primary coil and the sub primary coil and supplies spark discharge energy to a spark plug; and after turning off energization to the main primary coil, based on a detection value of terminal voltage of the main primary coil, turns on and off the sub switch circuit to turn on and off energization to the sub primary coil and additionally supply spark discharge energy to the secondary coil.
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