System and method for diagnosing an ignition system
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United States of America Patent
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Feb 13, 2018
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app pub date -
Jun 3, 2016
filing date -
Jun 3, 2016
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Abstract
A system and method for assessing the presence or absence of ignition coil degradation for an ignition system that includes two ignition coils for each spark plug. Ignition coil degradation may be determined without having to monitor ignition coils via specialized hardware circuitry. In one example, degradation of one or more ignition coils may be inferred from cylinder the presence or absence of cylinder misfire.
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