Patent ID: 8181626

Claim:
A fuel injection control apparatus for a compression self-igniting internal combustion engine that is capable of executing at least a primary injection and an auxiliary injection performed prior to the primary injection as an operation of fuel injection from a fuel injection valve, wherein the auxiliary injection is executed by being split into a plurality of injections, the fuel injection control apparatus comprises a fuel injection control unit for controlling an injection timing and an injection amount of each fuel injection such that some of the fuel injected in a first auxiliary injection that is performed prior to a second auxiliary injection combusts by self-ignition, and that a remainder of the fuel does not combust until fuel is injected in the primary injection, but combusts together with the fuel injected in the primary injection, and the injection timing of each fuel injection is set such that the fuel injected in the first auxiliary injection and flowing along a swirl flow in a cylinder overlaps the fuel injected in the subsequent primary injection, and that fuel injected in the second auxiliary injection does not overlap the fuel injected in the subsequent primary injection.