Internal combustion engine leakage detection apparatus
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United States of America Patent
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Mar 28, 2017
Grant Date -
Jul 14, 2016
app pub date -
Apr 6, 2015
filing date -
Jan 9, 2015
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Abstract
There is provided a leakage detection apparatus that can accurately detect a leakage condition in an internal combustion engine having a cylinder resting function. An ignition plug provided in the combustion chamber of a cylinder is made to generate an ignition signal at least once when based on an instruction from a cylinder resting control unit, a fuel injection valve and a valve driving mechanism are stopping the operation thereof; the leakage condition of the ignition plug is detected based on an output signal generated by an ion current detection circuit at a timing other than the timing when ignition discharge is caused.
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