Patent ID: 8566004

Claim:
A fuel injection control apparatus for an internal combustion engine, comprising: an alcohol concentration detector configured to detect an alcohol concentration in fuel supplied to the internal combustion engine; a fuel pressure detector configured to detect a pressure of the fuel; and a processing system, comprising a computer processor, configured to: perform a fuel injection control of the internal combustion engine by using a detection value of the alcohol concentration, which is detected by the alcohol concentration detector; determine a temperature of the fuel; memorize, in a memory device, the detection value of alcohol concentration, which is detected by the alcohol concentration detector, as a memorized value of the alcohol concentration when the temperature of the fuel is equal to or lower than a predetermined limit temperature; switch a control value from the detection value of the alcohol concentration, which is currently detected by the alcohol concentration detector, to the memorized value of the alcohol concentration, which has been memorized by the memory device, when the temperature of the fuel is higher than the predetermined limit temperature; perform the fuel injection control by using the control value; and adjust the predetermined limit temperature in accordance with the pressure of the fuel, which is detected by the fuel pressure detector, and the memorized value of the alcohol concentration, which is memorized by the memory device.