Control Device For Internal Combustion Engine

Abstract: The present invention provides a control device for an internal combustion engine, the control device being capable of performing calibration with high accuracy regardless of a variation in a sensor element, even when a setting range of a target air excess rate is wider. As the value to which a voltage value VHG converges through feedback control becomes farther in one direction (for example, in a high voltage direction) from a value corresponding to the theoretical air fuel ratio, or as a target air excess rate ?cmd is higher than a value corresponding to the theoretical air fuel ratio of the internal combustion engine, a control device (15) acquires, as a learning value of the voltage value VHG, the average value of the minimum value away in a direction opposite to the one direction (for example, in a low voltage direction) from the representative value (the average value of the minimum value) of the voltage value VHG before multiplication by a correction factor CF. Calibration of the voltage value VHG is performed on the basis of the acquired learning value.

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