| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology for improving efficiency by sufficiently improving combustibility of pre-air-fuel-mixture for main combustion, in regard to a combustion device 60 to be used for a gas turbine engine or the like. SOLUTION: In this combustion device 60, a flow passage 41 for pilot combustion is formed inside an inner cylinder 2, and a flow passage 42 for main combustion is formed between the inner cylinder 2 and an outer cylinder 3 covering the inner cylinder 2. A downstream side end of the outer cylinder 3 is positioned downstream of a downstream side end of the inner cylinder 2, and an annular projection part 10 projecting inward in the radial direction is formed in the inner wall of the outer cylinder 3 at a position downstream of the downstream side end of the inner cylinder 2. COPYRIGHT: (C)2006,JPO&NCIPI
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