Patent ID: 7885755

Claim:
A fuel injection amount control apparatus controlling an amount of fuel supplied to an internal combustion engine in correspondence to at least a temperature of air taken into the engine, an intake passage extending from the engine, and the intake passage being branched into a plurality of branch passages in an upstream section, the apparatus comprising: a plurality of intake air temperature sensors each provided in one of the intake passages, each intake air temperature sensor detecting an intake air temperature in the corresponding intake passage; and a control portion controlling an amount of the fuel supplied to the engine by using a control command value, in correspondence to an engine state or an environment estimated on the basis of the intake air temperatures detected by the intake air temperature sensors, wherein, when estimating the engine state or the environment, the control portion selects a maximum value of the intake air temperatures respectively detected by the intake air temperature sensors, and estimates, on the basis of the maximum value, whether the engine is in a state in which a fuel vapor is generated, and wherein, when it is determined that the engine is in a state in which a fuel vapor is generated, the control portion controls the amount of the fuel supplied to the engine by using the control command value corrected on the basis of the maximum value of the intake air temperature.