Fuel injection atomization device

The utility model discloses a fuel injection atomization device which comprises a nozzle and an installation support. A to-be-cooled part is arranged on the side surface of the nozzle; the cooling device is characterized in that the mounting bracket is provided with a cooling fluid inlet, a cooling fluid outlet and a mounting through hole extending in the height direction; the nozzle penetrates through the mounting through hole, the nozzle is in sealed connection with the two ends of the mounting through hole respectively, a cooling circulation cavity is formed between the nozzle and the mounting through hole, and the cooling circulation cavity is communicated with the cooling fluid inlet and the cooling fluid outlet respectively; and a to-be-cooled part of the nozzle is positioned in thecooling circulation cavity. According to the utility model, cooling fluid can be directly contacted with an area to be cooled on the surface of the nozzle, so that a good heat dissipation effect is achieved. 本实用新型公开了一种燃油喷射雾化装