| 摘要 |
PROBLEM TO BE SOLVED: To improve the fuel combustion efficiency of an injection nozzle and to reduce the bulk of the nozzle by providing assemblies which respectively jet main fuel, an oxidizing agent, and auxiliary fuel and arranging the assemblies which jet the main fuel, auxiliary fuel, and oxidizing agent in such a way that one of the assemblies surrounds the other two assemblies. SOLUTION: An injection nozzle 1 has an axial line X-X and is provided with an inner assembly 2 which jets main liquid fuel, an intermediate assembly 3 which jets an oxidizing agent, and an outer assembly 4 which jets auxiliary fuel. The outer assembly 4 is arranged on the outside in the radial direction of the intermediate assembly 3 which in turn is arranged on the outside of the inner assembly 2 in the radial direction. The assembly 2 is provided with an injection head 6 extended in front of an inner tube 5, namely, toward the downstream side and an outer tube 7 surrounding the tube 5 from the outside. In addition, the assembly 2 is arranged inside the assembly 3 in such a way that the assembly 3 can slide along the axial line X-X. The outer assembly 4 is provided with an injection head which jets the auxiliary fuel and is extended in front of an inner tube 40 and an outer tube 42 surrounding the tube 40 from the outside.
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