Control device of internal combustion engine

A control device of an internal combustion engine for controlling the internal combustion engine, wherein the internal combustion engine comprises a fuel injector directly injecting fuel into a combustion chamber, the control device comprising an injection control part controlling fuel injection from the fuel injector,

• wherein the injection control part is configured to control fuel injection from the fuel injector so that the fuel injector performs pre-injection a plurality of times, then performs main injection and so that after starting the main injection, at least part of a premixed gas formed by the pre-injections burns by compression self-ignition,
• the injection control part is configured to control the fuel injector so as to perform the pre-injections and the main injection at injection timings calculated based on engine load and engine speed when the internal combustion engine is operated in a steady operation mode in which the engine load and engine speed are maintained at substantially constant amounts and amounts of change per unit time of supercharging pressure and exhaust gas recirculation (EGR) rate are less than or equal to respective predetermined values, and
• when the internal combustion engine is operated in a transient operation mode in which the engine load and the engine speed are changing and the amounts of change per unit time of the supercharging pressure and the EGR rate are greater than the respective predetermined values, the injection control part is configured to perform correction control correcting injection timings of the main injection and the pre-injections from the injection timings calculated based on the engine load and the engine speed with respect to a time when the internal combustion engine is in the steady operation mode, and,
• in the correction control, the injection timings of the main injection and the pre-injections are corrected by relatively larger amounts at relatively larger crank angles from TDC before correction than at relatively smaller crank angles from TDC before correction.