Patent ID: 11913382
Assignee: HAMILTON SUNDSTRAND CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 9:
10. A fuel supply system for a turbine engine, comprising:
a single fuel manifold adapted to receive and distribute a fuel supply to a plurality of points of the turbine engine; and
a plurality of fuel injectors distributed around a periphery of the engine, adapted and configured to receive fuel from the single fuel manifold, at least one of the fuel injectors having:
a housing having an internal enclosure for pressurized fluid;
a fuel inlet formed on the housing, permitting delivery of fuel supply from the single fuel manifold to the fuel injector;
a scheduling valve disposed within the housing, configured for regulation of fuel flow from the fuel inlet in response to fuel pressure received at the fuel inlet;
a primary fuel circuit formed in the housing, receiving fuel from the scheduling valve;
a secondary fuel circuit formed in the housing, receiving fuel from the scheduling valve;
an electrically-controlled valve in fluid communication with the primary circuit adapted and configured to actively control fuel through the primary circuit in response to a control signal;
a fuel nozzle in fluid communication with and receiving fuel from the primary and secondary fuel circuits;
a primary outlet formed on the nozzle, in fluid communication with the primary fuel circuit;
a secondary outlet formed on the nozzle, in fluid communication with the secondary fuel circuit; and
a leak path in connection with the primary fuel circuit, whereby fuel from the scheduling valve passes through the primary fuel circuit at a minimum predetermined rate when dictated by the scheduling valve, regardless of the operation of the electrically-controlled valve.