A control apparatus for an internal combustion engine having two cylinder groups
and two variable valve control mechanisms provided to the respective cylinder groups,
includes a detecting section that detects an incylinder pressure of each cylinder,
a comparing section that makes a comparison between the two cylinder groups with
respect to a combustion stability and a control section that varies valve lift
characteristics of intake valves of one cylinder group which is larger in the average
incylinder pressure than the other cylinder group in accordance with a result of
comparison by the comparing section so as to make intake air quantities for the
respective cylinder groups be equal to each other.
