FUEL INJECTION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To execute sub-injection when temperature inside cylinders reach a target value. SOLUTION: Main injection of fuel is carried out from fuel injection valves 31 to 34 into cylinders 11 to 14 near a top dead center of compression. Post injection of the fuel is carried out from the fuel injection valves 31 to 34 into the cylinders 11 to 14 in an expansion process. In a fuel injection control device of such a diesel engine 1, the post injection timing is set at the time where the temperature inside the cylinders 11 to 14 are equalized to the target values. An ECU 100 obtains the post injection timing with reference to the compression dop dead center according to operation conditions of the diesel engine 1. The ECU 100 executes the post injection at this post injection timing.