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8166765 |
Fuel delivery and control system including a variable displacement actuation pump supplementing a fixed displacement main pump
A fuel delivery and control system is provided including a dual pump fluid circuit configuration comprising a fixed positive displacement pump sized to supply the main engine burn flow ranging from...
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8166762 |
Fuel control arrangement
Fuel control arrangements provide and control fuel flow to injectors through fuel control valves. The injectors are connected to respective fuel control valves which in turn are connected to a...
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8156742 |
Fuel-injection device in a turbomachine
A fuel-injection device in a turbomachine is disclosed. The device includes a high-pressure pump supplying a flow control valve, whose outlet is connected via a pressurization and cut-off valve to...
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8145403 |
Operating a turbine at baseload on cold fuel with hot fuel combustion hardware
A method and algorithm are provided to operate a gas turbine at baseload in an emission compliant capable mode to avoid combustion dynamics while operating with cold fuel and hot fuel combustion...
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8132398 |
Apparatus and method of operating a gas turbine engine at start-up
A method of operating a gas turbine engine having a turbine and a compressor connected via a shaft, a main fuel supply line for supplying fuel to a combustor that is positioned to release expanding...
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8127548 |
Hybrid electrical/mechanical turbine engine fuel supply system
A turbine engine fuel supply system includes a priority flow line, a plurality of secondary fuel loads, an electric fuel metering pump, and a mechanically-driven fuel pump. The priority flow line...
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8128378 |
Dual mode compensation for variable displacement pump fluid metering system
A system and method is provided for controlling a variable displacement piston pump that supplies fluid to one or more loads. If fluid is being supplied through a metering valve to a load, then the...
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8122725 |
Methods and systems for operating gas turbine engines
Methods and systems for delivering fuel in a gas turbine engine are provided. The system includes a plurality of can annular combustors that includes at least a first set of combustors of the...
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8123821 |
Regulating vanadium inhibitor in a gas turbine
A method and system are disclosed that enable an automatic regulation of a vanadium inhibitor in a fuel of a gas turbine. In one embodiment, the method includes obtaining an indication as to...
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8104258 |
Fuel control system with metering purge valve for dual fuel turbine
The fuel system of a dual fuel turbine includes a flow control valve having a metering purge valve that in one state directly meters fuel to injectors of the turbine, in another state closes of...
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8082724 |
Combusting system, remodeling method for combusting system, and fuel injection method for combusting system
The present invention improves the reliability of a combusting system including multiple combustors and improves an environmental performance thereof. The invention includes a device that delays...
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8074439 |
System, method and apparatus for lean combustion with plasma from an electrical arc
The present invention provides a plasma arc torch that can be used for lean combustion. The plasma arc torch includes a cylindrical vessel, an electrode housing connected to the first end of the...
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8061118 |
Method for tuning valves for primary and secondary fuel circuit
A method for adjusting fuel flow to individual combustion chambers in a gas turbine having fuel nozzles for each combustion chamber, manifolds for supplying fuel to at least one fuel nozzle in each...
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8061117 |
Dynamic control system to implement homogenous mixing of diluent and fuel to enable gas turbine combustion systems to reach and maintain low emission levels
System, methods and apparatus for dynamic control of mixing of diluent and fuel at desired diluent-to-fuel ratios to obtain low level of undesirable emissions in a combustion system are described.
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8056344 |
Gas turbine engine and method for reducing turbine engine combustor gaseous emission
In a turbine engine hydrogen is injected into the combustor in response to a power output level of the turbine engine. In a preferred embodiment, gaseous hydrogen is always injected at low-power...
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8056317 |
Apparatus and system for gas turbine engine control
Methods and systems for controlling a dynamic response in a gas turbine fuel control system are provided. The control system includes a component model adapted to regulate a fuel supply pressure...
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8028512 |
Active combustion control for a turbine engine
A combustion control system for a turbine engine is disclosed. The combustion control system includes a fuel injector having a main fuel supply and pilot fuel supply coupled to a combustor of the...
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8024934 |
System and method for attenuating combustion oscillations in a gas turbine engine
A system and method for modifying the supply of fuel to injectors to attenuate combustion oscillations in a gas turbine engine. The gas turbine engine may comprise a combustor, a plurality of...
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8015791 |
Fuel control system for gas turbine and feed forward control method
A fuel controller for a combustion system in a gas turbine having a combustion system, a fuel supply, a pressure control valve proximate the combustion system and a first pressure sensor proximate...
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8001761 |
Method and apparatus for actively controlling fuel flow to a mixer assembly of a gas turbine engine combustor
An apparatus for actively controlling fuel flow from a fuel pump to a mixer assembly of a gas turbine engine combustor, where the mixer assembly includes a pilot mixer and a main mixer. The pilot...
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7997083 |
Method and system for detection of gas turbine combustion blowouts utilizing fuel normalized power response
A method and controller for identifying lean blowout conditions in a Dry Low NOx (DLN) combustor during a premix mode. An effective approach to quickly and reliably identify a blowout during...
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7992392 |
Method for regulating the flow rate of fuel to a turboshaft engine in acceleration or in deceleration
Apparatus for regulating the flow rate of fuel to a turboshaft engine in acceleration or in deceleration, the engine having a free turbine and a core engine, the apparatus comprising sensors...
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7966801 |
Apparatus and method for gas turbine active combustion control system
An Active Combustion Control System and method provides for monitoring combustor pressure and modulating fuel to a gas turbine combustor to prevent combustion dynamics and/or flame extinguishments....
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7966802 |
Methods and apparatus for operating gas turbine engine systems
Methods and systems for operating a gas turbine engine system are provided. The system includes a fuel control system. The fuel control system includes a plurality of sensors positioned about the...
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7966995 |
Dual level pressurization control based on fuel flow to one or more gas turbine engine secondary fuel loads
A system and method provide dual level pressurization control of a fuel supply system based on whether fuel is being supplied to one or more secondary fuel loads. Fuel pump discharge backpressure...
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7950215 |
Sequential combustion firing system for a fuel system of a gas turbine engine
A gas turbine combustion system for a turbine engine is disclosed. The gas turbine combustion system may include a plurality of combustor baskets positioned circumferentially about a longitudinal...
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7950240 |
Gas turbine plant and method of operation
In a method for operating a gas turbine plant (10) with a compressor (11) for the compression of combustion air sucked in from the surroundings, with a combustion chamber (15) for generating hot...
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7934367 |
Method and device for reducing the speed in the event of breakage of a gas turbine engine turbine shaft
A device for detecting breakage of a gas turbine engine shaft and for reducing the rotational speed of the turbine includes a rotor of a turbine or of a first stage turbine driving the shaft. The...
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7926288 |
Reformed-fuel-burning gas turbine system and method of operating the same
The present invention provides a reformed-fuel-burning gas turbine system that constantly generates good-quality reformed fuel even when heavy fuel has a different composition. The...
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7917278 |
System and method for lean blowout protection in turbine engines
A lean blowout protection system and method is provided that facilitates improved lean blowout protection while providing effective control of turbine engine speed. The lean blowout protection...
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7895819 |
Assistance and emergency backup for the electrical drive of a fuel pump in a turbine engine
A system for driving a fuel pump in a turbine engine is disclosed. The system includes an electric motor and a fluid flow assistance unit controlled by a control valve. In the system, the control...
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7895821 |
System and method for automatic fuel blending and control for combustion gas turbine
A flexible and automatic system and method for blending an inexpensive secondary gas with a primary gas fuel for operation of a Dry Low NOx gas turbine. The secondary gas may be a gas fuel such as...
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7877979 |
Integrated gasification combined cycle plant, method of controlling the plant, and method of producing fuel gas
A combined power generation unit includes a gasification unit with a gasification furnace that is used to produce fuel gas, and a gas turbine that uses the fuel gas to generate power. To produce...
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7874139 |
IGCC design and operation for maximum plant output and minimum heat rate
A system and method for operating an integrated gasification combined cycle (IGCC) gas turbine system that utilizes the fuel stream as a means of controlling the operation of the IGCC to achieve a...
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7861534 |
Method of starting turbine engine from low engine speed
A method of starting a turbine engine at a first engine speed value which is lower than a second engine speed value designed for a normal engine starting operation, comprises varying a fuel flow...
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7854110 |
Integrated fuel gas characterization system
A gas turbine engine that includes a compressor, a combustion stage, a turbine assembly, a fuel gas feed system for supplying fuel gas to a combustion stage of the gas turbine, and an integrated...
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7845177 |
Metering demand fuel system
A fuel system includes first and second drive assemblies that are independently drivable relative to one another. The second drive assembly has a speed that is selectively controlled based upon a...
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7841164 |
Direct metering fuel system with an integral redundant motor pump
A direct metering fuel supply system includes a plurality of axial gap motors, a fixed displacement, variable speed positive displacement piston pump, and a gas turbine engine control. Each axial...
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7836676 |
Fuel metering valve back-up position control system
A system allows a user to manually manipulate fuel flow to a gas turbine engine during a loss of power to the fuel supply system fuel metering unit. The fuel metering unit includes a fuel metering...
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7832191 |
Integrated gasification combined cycle and the control method
A gasification unit provided with a gasification furnace 23 to produce fuel gas production is provided. A combined power generation unit 25 which generates power by rotating a gas turbine and a...
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7823388 |
Gas turbine engine control system
In a gas turbine engine control system having a first valve for regulating the flow rate of fuel in premixed combustion and a second valve for regulating that in diffusion combustion, when the...
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7818970 |
Controlling a gas turbine engine with a transient load
A technique is provided for operating a gas turbine engine that has a combustor with a primary stage and one or more other stages and a first compressor providing an air flow to the combustor. This...
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7822576 |
Engine health monitoring
A method of monitoring the health of a gas turbine engine 10 comprising a fuel system 30 having a fuel metering valve 36 and a fuel pump 40 for supplying fuel to a combustor apparatus 15. The...
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7810309 |
Fuel system utilizing dual mixing pump
The present invention provides a fuel system for an engine including a water supply source for providing water and a fuel supply source for providing fuel. A centrifugal pump is fluidly connected...
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7805922 |
Fuel flow tuning for a stage of a gas turbine engine
A method and system for controlling combustion in a gas turbine engine (10) includes reducing an overall fuel flow provided to a stage (22) of burners (e.g. 34, 35) of the gas turbine engine until...
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7784487 |
Fuel metering valve assembly including thermal compensation mechanism
A metering valve assembly is provided for metering a fluid. The metering valve assembly includes a position sensor, metering valve, and a thermal compensation mechanism. The metering valve includes...
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7784263 |
Method for determining sensor locations
A method for determining sensor locations in a gas turbine engine is provided. The said method includes providing a turbine rear frame including a radially inner surface, a radially outer surface...
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7770400 |
Non-linear fuel transfers for gas turbines
A method for controlling the rate of transfer between operation with gas and liquid fuel types to minimize the time in undesirable operational mode, thereby preventing excessive wear and damage to...
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7762080 |
Fuel metering pump calibration method
A system and method for accurately supplying fuel flow to a gas turbine engine from a fuel metering pump regardless of variations in operating conditions of the fuel metering pump. The system...
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7752833 |
Methods and apparatus for gas turbine fuel control
A method for reducing or eliminating oscillations in a gas turbine fuel control system includes utilizing an engine model to regulate a gas supply pressure for a gas turbine, sensing the pressure...
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