A compressed self-ignition type internal combustion engine includes a fuel injection nozzle provided such that a plurality of injection holes are exposed from a cylinder head of the internal combustion engine to a combustion chamber, and a plurality of hollow ducts configured such that an inlet and an outlet are exposed to the combustion chamber. The plurality of ducts are configured such that each fuel spray injected from the plurality of injection holes of the fuel injection nozzle passes from the inlet to the outlet. The internal combustion engine includes a heating device for heating at least one of the plurality of ducts.