INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To minimize variations in generated torque when there are variations in the fuel injection rate due to low fuel injection rate. SOLUTION: In a small fuel injection rate region that includes a region throughout which a fuel injection period-to-fuel injection rate characteristics curve has no linearity due to a low rate of fuel injected from a fuel injection valve 6, a first combustion is performed in which little soot is generated and thus there is little fluctuation in generated torque since the amount of inert gas supplied into a combustion chamber 5 is more than the amount of inert gas that results in the amount of soot generated peaking. In a large fuel injection rate region in which the rate of fuel injected from the fuel injection valve 6 is high, a second combustion is performed in which the amount of inert gas supplied into the combustion chamber is less than the amount of inert gas that results in the amount of soot generated peaking.