Gas sensor control apparatus, gas sensor apparatus, and internal combustion engine control apparatus

An internal combustion engine control apparatus for controlling an operation state of an internal combustion engine, the internal combustion engine control apparatus comprising a control section that executes:

• a first receiving process for receiving a first detection result output from a mixed-potential-type ammonia detection section for detecting ammonia contained in a gas under measurement discharged from the internal combustion engine, the first detection result corresponding to the concentration of the ammonia detected by the mixed-potential-type ammonia detection section,
• a second receiving process for receiving a second detection result output from an oxygen detection section for detecting oxygen contained in the gas under measurement, the second detection result corresponding to the concentration of the oxygen,
• a first concentration calculation process for calculating, as a first ammonia concentration, the concentration of ammonia contained in the gas under measurement based on the first detection result and the second detection result, and
• a pressure correction process for correcting the first ammonia concentration, based on pressure information obtained from an external device and representing pressure of the gas under measurement, so as to mitigate an influence of pressure of the gas under measurement on the first ammonia concentration, thereby obtaining a second ammonia concentration of the gas under measurement.