Control apparatus for an internal combustion engine

A control apparatus for an internal combustion engine comprising:

• an electronic throttle valve provided in an intake system of said internal combustion engine;
• an intake air amount detecting section that detects an amount of intake air sucked into said internal combustion engine;
• an accelerator opening detecting section that detects, as an accelerator opening, an amount of operation of an accelerator pedal of a vehicle on which said internal combustion engine is installed;
• a speed sensor that detects a running speed of said vehicle;
• a target opening calculating section that calculates a target opening of said electronic throttle valve from said accelerator opening;
• a throttle opening detection section that detects a throttle opening of said electronic throttle valve;
• and
• an electronic control section that drives said electronic throttle valve so as to make said throttle opening coincide with said target opening;
• wherein said target opening calculating section includes a correction factor calculating section that calculates a correction factor for correcting said target opening;
• and
• said correction factor calculating section sets an arithmetic calculation gain of said correction factor corresponding to characteristics between said throttle opening and said amount of intake air in such a manner that arithmetic calculation gains, being mutually different from each other, are set for ranges of said characteristics different from each other.