| 摘要 |
In order to provide a simple, low-cost fuel injection system, particularly for a dual zoned annular combustor (10), a single fuel manifold (42) is utilized having first and second manifold portions (42a and 42b) each with a respective plurality of openings (44a and 44b) through which fuel may flow into first and second fuel injection zones (34 and 36). The annular combustor (10) typically includes a combustor housing (12) comprising an axially extending sleeve (14) disposed about a longitudinally extending axis (16) and an annular liner (18) defining a combustion chamber (26) and being spaced from the housing (12) and the sleeve (14) to form a compressed air flow path (28) therebetween. By providing a plurality of circumferentially spaced openings (38and40) through an outer wall (22) of the liner (18) in each of a pair of axially spaced planes so as to be in communication with the first and second fuel injection zones (34and 36), the first and second manifold portions (42a and 42b) are operative to inject fuel through the liner (18) so that it enters the combustion chamber (26) in a generally tangential direction into the first duel injection zone (34) axially adjacent a radially extending wall (24) of the liner (18) and into the second fuel injection zone (36) axially adjacent the first fuel injection zone (34).
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