Output control apparatus of internal combustion engine

Fuel injection correction amounts QiscON, QiscOFF1 and QiscOFF2 are respectively calculated depending on the operation ranges (S206, S208, S210). However, take-off assist correction itself is performed based on the total amount of all the fuel injection correction amounts. Therefore, even when the operation range is changed while a vehicle takes off from a standstill or immediately after the vehicle takes off, all the fuel injection correction amounts are always reflected on the take-off assist correction. In addition, the gain for calculation of the fuel injection correction amount is changed such that the gain corresponds to the operation range. Accordingly, the engine operation state is reflected on the fuel injection correction amount with responsiveness appropriate for each operation range. Therefore, it is possible to prevent fluctuation in an engine rotational speed and a vehicle speed, and to minimize the sense of discomfort felt by a driver.