Patent ID: 7703436

Claim:
A control device of an internal combustion engine, wherein the control device determines a target throttle opening degree based on a target intake air amount, which is provided with an intake calculation formula for finding an intake air amount based on an intake pipe internal pressure at a downstream side of a throttle valve, determines that a control abnormality occurs when a magnitude of a difference between said target intake air amount and an intake air amount found from said intake calculation formula using said intake pipe internal pressure measured by an intake pipe internal pressure sensor is greater than a predetermined value, and determines that no control abnormality occurs when the magnitude of the difference is less than or equal to the predetermined value; and wherein at least one of said target intake air amount and said target throttle opening degree is determined based on a demand of a driver and an operating state of the internal combustion engine, the operating state of the internal combustion engine including opening characteristics of an intake valve or an exhaust valve.