To provide a fuel injection device capable of reducing NOx emission quantity, and capable of stably holding a flame, while suppressing the increase of a radial directional size.
A fuel injection device (1) is provided for supplying fuel to compressed air from a compressor and combusting the fuel, and includes a pilot fuel injection valve (21) arranged in a center part in a radial direction of the fuel injection device and injecting fuel into a combustion chamber (15), and a main fuel injection valve (23) having a main flow path (87) generating premixed gas and covering the outer periphery of the pilot fuel injection valve are arranged. In the main flow path (87), there are provided: a main outside air flow path (83) arranged in the outside in a radial direction and flowing compressed air into an annular premixed gas path (81) in an axial center direction; and a main inside air path (85) arranged in the inside in the radial direction and flowing compressed air into the premixed gas path from the inside in the radial direction. In the main inside air path (85), there is further provided a main fuel injection hole (89) injecting fuel from the upstream side in the axial center direction.
KOBAYASHI MASAYOSHI
HORIKAWA ATSUSHI
FUJIWARA HITOSHI
JAPAN AEROSPACE EXPLORATION
| JP2006105488A | 2006-04-20 | |||
| JP2003004232A | 2003-01-08 | |||
| JP2002168449A | 2002-06-14 | |||
| JP2002323221A | 2002-11-08 | |||
| JP2000008880A | 2000-01-11 | |||
| JPH085076A | 1996-01-12 | |||
| JP2006105488A | 2006-04-20 |
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