| 摘要 |
A duplex fuel injector has concentric arrangement of an inner air swirler, an inner fuel injection port, an intermediate axial air filmer, a second air swirler, an outer fuel injection port and an outer air swirler. The intermediate air filmer produces a curtain of air separating an outer air and fuel spray from an inner air and fuel spray. The outer spray is used in a pilot combustion zone whereas the inner spray is used in a main combustion zone.
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