LINE REPLACEABLE FUEL NOZZLE APPARATUS, SYSTEM AND METHOD

摘要

In various embodiments, a fuel injector may comprise a fuel nozzle and a pilot stage. The fuel nozzle may define a main fuel channel, a secondary fuel channel, a simplex fuel channel and a heat shield area. The main fuel channel may be disposed about at least a portion of the simplex fuel channel. The secondary fuel channel may be disposed about at least a portion of the simplex fuel channel. The heat shield area may be configured to separate and protect the fuel channels from a heat load to prevent fuel coking. The pilot stage may be operatively coupled to the fuel nozzle and may be configured to receive fuel from the secondary fuel channel or the simplex fuel channel. The main stage may be operatively coupled to the fuel nozzle. The main stage may be configured to receive fuel from the main fuel channel.

主权项

1. A fuel injector, comprising:
a fuel nozzle defining a main fuel channel, a secondary fuel channel, a simplex fuel channel and a heat shield area,
wherein the main fuel channel is disposed about at least a portion of the simplex fuel channel,wherein the secondary fuel channel is disposed about at least a portion of the simplex fuel channel, andwherein the heat shield area is disposed about and configured to separate and protect the main fuel channel, the secondary fuel channel and the simplex fuel channel from a heat load to prevent fuel coking; a pilot stage operatively coupled to the fuel nozzle and configured to receive fuel from the at least one of, the secondary fuel channel, or the simplex fuel channel; and a main stage in fluid communication with and configured to receive fuel from the main fuel channel.