Fuel injection for a staged gas turbine combustion chamber
AssigneeRolls-Royce Deutschland Ltd & Co KG
InventorF. Richard Emmons
Life of this patent
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Abstract
In a staged gas turbine combustion engine, each combustion chamber of an annular array of chambers includes at least a pilot and a main combustion stage each having an fuel injection nozzle; the method includes feeding fuel continuously in operation to the pilot stage nozzle and controlling the fuel flow to the main stage nozzle through a pulsing and dosing valve to control the fuel flow delivered to the main stage fuel nozzle.
Claims3
Fuel injection apparatus for execution of a pulsed fuel injection into a combustion chamber wherein connected upstream from a fuel injection nozzle of the combustion chamber is a fuel dosing valve, said apparatus including a pulsation control valve with said fuel dosing valve being combined as one fuel delivery component, said one fuel delivery component having a single control valve element mounted for rotation in a cylinder and being slidable in the direction of the cylinder axis, said valve element having a metering port in communication with a valve passage and which is connectable with a fuel supply system for the combustion chamber, said cylinder having a control window, said valve element port being able to be brought to overlap said control window in the cylinder which is also connected with the fuel supply system, said control valve element having faces and being actively controlled to be positioned along the cylinder axis by hydraulic pressure acting on at least one of said faces.
Dependencies are inferred from the claim text.