Ignition apparatus for internal combustion engine
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United States of America Patent
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Apr 14, 2020
Grant Date -
Apr 27, 2017
app pub date -
Apr 10, 2015
filing date -
Apr 10, 2014
priority date (Note) -
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Abstract
A maximum value of a discharge current from a capacitor 13, detected by a primary-side current detection means 24 disposed at a grounded end of the capacitor 13, is controlled such as not to exceed a predetermined first control value Y1. The first control value Y1 is derived based on magnetic saturation of a primary winding 3, with the control being performed by controlling the on-off state of an energy injection switching means 20. As a result, magnetic saturation of the primary winding 3 can be prevented, and the reliability of an ignition apparatus which incorporates an energy injection circuit 6 can be increased.
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