FUEL INJECTION CONTROL APPARATUS, CONTROL METHOD, AND CONTROL PROGRAM OF INTERNAL COMBUSTION ENGINE

摘要

PURPOSE: A fuel injection control apparatus, control method, and control program of an internal combustion engine are provided to make an estimation of excellent accuracy in fuel behavior possible and to improve control efficiency of supply fuel. CONSTITUTION: A fuel injection control apparatus of an internal combustion engine(1) comprises a control unit for controlling a fuel supply quantity from a fuel injection system by making use of a fuel behavior model obtained by modeling dynamic behavior of fuel flowing from the fuel injector(27) into a combustion chamber(14) of a cylinder(10) of the internal combustion engine. The control unit performs the control of the fuel supply quantity from the fuel injection system by making use of the fuel behavior model as a combination of behavior models of a plurality of fuel components having different boiling points. The fuel injection control apparatus further comprises means for detecting a fuel quality by detecting a predetermined physical property. The control unit corrects a component ratio of the plurality of fuel components in the fuel behavior model according to the fuel quality detected.