CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE

A control apparatus for an internal combustion engine (10) is configured to: calculate measured data of mass fraction burned (MFB) using an output signal of an incylinder pressure sensor (30) after performing a first low-pass filtering; execute engine control based on the measured value of a specified fraction combustion point that is calculated based on the measured data of mass fraction burned; and prohibit the engine control when the first correlation index value (±) is less than a first determination value (± th1 ) and a difference (D1) is greater than or equal to a determination value (D1 th ).