Electronic fuel injection type diesel engine

An electronic fuel injection type diesel engine comprising:

• a combustion chamber (2) inside a cylinder (1);
• a fuel injection chamber (4) inside a cylinder head (3);
• a fuel injector (6) that injects liquid fuel (5) into the fuel injection chamber (4);
• a fuel accumulation unit (7) that accumulates the liquid fuel (5) injected from the fuel injector (6);
• and
• an electronic control unit (8) that controls a timing and an amount of injection of the liquid fuel (5),
• wherein the combustion chamber (2) inside the cylinder (1) serves as a main combustion chamber (2a), and the fuel injection chamber (4) serves as a vortex chamber communicated with the main combustion chamber (2a) via an injection port (9), and compressed air (10) that becomes a swirl flow swirling in the vortex chamber is introduced from the main combustion chamber (2a) to the vortex chamber via an injection port (9),
• wherein the fuel injector (6) includes a plurality of fuel injection holes (6b) (6c), when viewed in a direction parallel to a cylinder central axis (1b), a direction orthogonal to an injection port central axis (9a) is taken as a lateral direction, the plurality of fuel injection holes (6b) (6c) includes a single fuel injection hole (6b) in a center and a pair of fuel injection holes (6c) (6c) disposed on both sides thereof in the lateral direction, an injection of the liquid fuel (5) from the single fuel injection hole (6b) is directed toward the main combustion chamber (2a) via an inside of a center in a left-right direction of the vortex chamber and an inside of the injection port (9) in this order, injection directions of the liquid fuel (5) from the pair of fuel injection holes (6c) (6c) are toward an inner surface of both sides in the lateral direction of the vortex chamber located on both sides in the lateral direction of the injection port (9), and the pair of fuel injection holes (6c) (6c) have smaller hole diameters than the single fuel injection hole (6b).