Patent ID: 7792632

Claim:
An intake air quantity correcting device comprising: an intake air quantity obtaining means for obtaining an intake air quantity sensing value from an intake air quantity sensor that senses an intake air quantity flowing from an intake system into a combustion chamber of an internal combustion engine; an injection quantity obtaining means for obtaining an injection quantity sensing value from an injection quantity sensor that senses an injection quantity of fuel injected from an injector or a physical quantity relevant to the injection quantity; an oxygen concentration obtaining means for obtaining an oxygen concentration sensing value from an oxygen concentration sensor that senses an oxygen concentration in exhaust gas discharged from the internal combustion engine; a calculating means for calculating a sensing target of a certain one of the intake air quantity sensor, the injection quantity sensor and the oxygen concentration sensor based on sensing values of the other two sensors; and an intake air quantity correcting means for correcting the intake air quantity sensing value based on a difference between the calculation value calculated by the calculating means and the sensing value of the certain one of the sensors.