CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE

A control apparatus for an internal combustion engine (10) 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 (30); 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 (²) for dMFB/d¸; and suspend the engine control when the first correlation index value (±) is less than a first determination value (± th1 ) and the second correlation index value (²) is greater than or equal to a second determination value (² th ).