| 摘要 |
In order to avoid carbon buildup and to assist fuel atomization, a fuel injection system (40) includes a fuel injector (42) associated with the upstream portion (44) of a combustor (10). The fuel injector (42) has a fuel flow passage (46) in communication with a source of fuel (14) and terminating in the upstream portion (44) of the combustor (10). The fuel injection system (40) also includes a primary oxidant delivery tube (20) associated with the upstream portion (44) of the combustor (10). The primary oxidant delivery tube (20) defines a primary oxidant flow passage (48) in communication with a source of oxidant (12) and terminating in the upstream portion (44) of the combustor (10). The fuel injection system (40) further includes a secondary oxidant delivery tube (50) associated with the upstream portion (44) of the conbustor (10). The secondary ocidant delivery tube (50) defines a secondary oxidant flow passage (52) in communication with the source of oxidant (12) and terminating in the upstream portion (44) of the combustor (10). The fuel injection system (44) is such that the fuel flow passage (46) is adapted to inject fuel from the source (14) into the upstream portion (44) of the combustor (10). The primary and secondary oxidant flow passages (48 and 52) are then adapted to deliver oxidant from the source (12) into the upstream portion (44) of the combustor (10) in surrounding relation to fuel injected through the fuel flow passage (46). With this arrangement, the secondary oxidant flow passage (52) is designed to assist in atomizing fuel injecting through the fuel flow passage (46) in a manner avoiding carbon buildup in the combustor (10).
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