CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE
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United States of America Patent
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Issued Date -
Jan 12, 2017
app pub date -
Jul 6, 2016
filing date -
Jul 8, 2015
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Abstract
A control apparatus for an internal combustion engine is configured to: calculate measured data of MFB in synchrony with crank angle based on in-cylinder pressure detected by an in-cylinder pressure sensor; execute engine control based on a measured value of a specified fraction combustion point that is calculated based on the measured data of MFB; calculate a first correlation index value for MFB and a second correlation index value for dMFB/dθ; and suspend the engine control when the first correlation index value is less than a first determination value and the second correlation index value is greater than or equal to a second determination value.
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