Patent ID: 7209825

Claim:
A control apparatus for an internal combustion engine, comprising: a calculation portion which obtains a first index that indicates an amount of fuel adhering to a wall surface of an intake passage, using intake valve timing, based on a first relation that is set between the intake valve timing and the first index under a condition that exhaust valve timing is fixed; obtains a correction value that reduces the first index, using the exhaust valve timing and the intake valve timing, based on a second relation that is set among the exhaust valve timing, the intake valve timing and the correction value under a condition that the exhaust valve timing is not fixed; and calculates a second index that indicates the amount of fuel adhering to the wall surface of the intake passage, by correcting the first index using the correction value, a control portion which controls an amount of fuel to be injected based on at least one of the first index and the second index.