FUEL INJECTION TIMING CONTROL DEVICE AND FUEL INJECTION TIMING CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE

PROBLEM TO BE SOLVED: To reduce the influence on output of an internal combustion engine post-injection in the internal combustion engine having a plurality of cylinders.SOLUTION: A diesel engine 102 has a plurality of cylinders, and successively executes main injection of a fuel from a fuel injection valve 106, and a post injection following the main injection. A fuel injection timing control device acquires a main injection timing information indicating a timing for executing the main injection in a subsequent cylinder in which the main injection is executed near a timing to execute the post injection in a cylinder to be controlled, and determines a timing after a starting timing of the main injection of the subsequent cylinder, as a termination timing of the post injection in the cylinder to be controlled.