| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel injection control device of an internal combustion engine that reliably introduces a required amount of fuel into a combustion chamber according to the operating conditions of the engine. <P>SOLUTION: This fuel injection control device detects operating condition of the engine, and in a suction stroke injection mode, calculates a stick ratio Kstick based on a stick ratio calculation map. Based on an evaporation ratio calculation map, the fuel injection control device calculates an evaporation ratio Kevapo, and in consideration of the stick ratio Kstick and the evaporation ratio Kevapo, calculates a fuel injection amount Qn so that a fuel amount Qcyl_n to be introduced into the combustion chamber in n cycles is optimum according to the operating condition of the engine. In an exhaust stroke injection mode, the fuel injection control device calculates the sticking ratio Kstick and the evaporation ratio Kevapo based on the cooling water temperature of the engine which is information detected by a water temperature sensor, and in the same manner as in the suction stroke injection mode, calculates the fuel injection amount Qn so that the fuel amount Qcyl_n to be introduced into the combustion chamber in n cycles is optimum according to the operating condition of the engine. <P>COPYRIGHT: (C)2013,JPO&INPIT |
