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| Number | Title | Issue Date |
| 8087251 | Gas turbine, method of controlling air supply and computer program product for controlling air supply The present invention provides a gas turbine capable of reducing energy consumption while suppressing a so-called cat back phenomenon. The gas turbine includes a combustor-accommodating chamber casing for accommodating therein a combustor which burns fuel and air co... | 01/03/2012 |
| 8079221 | Variable geometry hysteresis control for a gas turbine engine One embodiment of the present application is a gas turbine engine with a compressor that includes a variable geometry mechanism to vary working fluid flow area. A desired state of this mechanism is selected different than a current state to change the amount of flow... | 12/20/2011 |
| 7752850 | Controlled pilot oxidizer for a gas turbine combustor A combustor (22) for a gas turbine (10) includes a main burner oxidizer flow path (34) delivering a first portion (32) of an oxidizer flow (e.g., 16) to a main burner (28) of the combustor and a pilot oxidizer flow path (... | 07/13/2010 |
| 7469545 | Auxiliary power unit inlet door position control system and method An auxiliary power unit (APU) includes a controller that controls the position of an APU inlet door, and thus ram air flow to the APU, to ensure optimal starting conditions are attained and maintained in the APU during APU startup operations. The controller receives... | 12/30/2008 |
| 7340880 | Compressed air bypass valve and gas turbine It is the objective of the present invention to enable smooth rotation of the grid plate and normal operation of the bypass valve, regardless of the operational state of the gas turbine. The bypass valve according to the present invention is provided with a frame, w... | 03/11/2008 |
| 7260462 | Method for controlling an electromagnetic valve, in particular for an automatic transmission of a motor vehicle A method for controlling an electromagnetic valve, in particular for an automatic transmission of a motor vehicle. With known methods, electromagnetic valves are triggered with a pulse-width-modulated signal having a constant clock frequency. The object is to provid... | 08/21/2007 |
| 7237377 | Method and apparatus for gas turbine dry low NOx combustor corrected parameter control A method for controlling a combustor of an engine, the combustor having a fuel to oxidant ratio, the fuel to oxidant ratio being defined as a ratio of an amount of fuel supplied to the combustor divided by an amount of oxygen in an oxidant stream supplied to the com... | 07/03/2007 |
| 7140188 | Gas turbine engine with intake air flow control mechanism A gas turbine engine includes: an air flow control system installed in an air intake path for introducing air to a compressor. The air intake path is located outside and upstream with respect to the compressor. The engine also includes intake air flow control means ... | 11/28/2006 |
| 7124591 | Method for operating a gas turbine A gas turbine includes a compressor, a combustor, a turbine, and a flow path diverting an excess portion of the compressed air produced by the compressor around the turbine. The flow path conducts the excess portion into a turbine exhaust gas flow producing a cooled... | 10/24/2006 |
| 7096657 | Gas turbine engine electromechanical variable inlet guide vane actuation system An electromechanical inlet guide vane actuation system includes one or more electric motor driven actuators that are used to appropriately position the inlet guide vanes in a gas turbine engine. The actuation system includes a control circuit that supplies guide van... | 08/29/2006 |
| 7096675 | Device for a combustion chamber in a gas turbine for controlling the intake of gas to a combustion zone A device for a combustion chamber of a gas turbine for controlling the intake of gas into the combustion zone of the combustion chamber. The device includes a control element that is arranged outside the combustion chamber. This control element has a first covering ... | 08/29/2006 |
| 7072784 | System for monitoring wind power plants A system to acoustically monitor at least one wind power installation, wherein the wind power installation includes a plurality of components including at least rotor blades. The system may comprise a remote monitoring center and a first wind power installation. The... | 07/04/2006 |
| 7062918 | Diffuser arrangement A diffuser arrangement is provided in which a wall surface of the diffuser arrangement incorporates an upstream part and a downstream part with an aperture between them. There is a step displacement between the upstream part and the downstream part along with specif... | 06/20/2006 |
| 7024862 | System and method for controlling combustion in gas turbine with annular combustor A gas turbine system composed of a gas turbine engine and a controller. The gas turbine engine includes an annular combustor, and a turbine driven by combustion gas from the annular combustor to rotate on a longitudinal centerline axis of the gas turbine engine. The... | 04/11/2006 |
| 7003426 | Method and system for detecting precursors to compressor stall and surge A method and system for detecting precursors to compressor stall and surge in which at least one compressor parameter is monitored to obtain raw data representative of said at least one compressor parameter. The raw data is pre-processed using a frequency demodulato... | 02/21/2006 |
| 6935119 | Methods for operating gas turbine engines A method for operating a gas turbine engine including a high pressure compressor, a variable inlet guide vane assembly and a water injection apparatus for injecting water into a flow of the engine is provided. The method comprises transmitting engine operating param... | 08/30/2005 |
| 6837055 | Gas turbine engine control system An apparatus and method for controlling a gas turbine engine involves calculating a simple corrected speed value for the engine using values of compressor speed and inlet stagnation temperature of the compressor. This simple corrected speed value is then adjusted to... | 01/04/2005 |
| 6735955 | Control system for positioning compressor inlet guide vanes A control system is disclosed for optimizing the transient response of a gas turbine engine by controlling the variable positioning of compressor inlet guide vanes. The system employs a normal mode schedule which schedules relatively closed inlet guide vane settings... | 05/18/2004 |
| 6732531 | Combustion system for a gas turbine engine with variable airflow pressure actuated premix injector The present disclosure provides a turbogenerator system having a turbine mounted for rotation on a shaft, a motor/generator coupled with the shaft for rotation therewith. A combustor for combusting fuel and compressed air to generate combustion gases for rotating th... | 05/11/2004 |
| 6658856 | Hybrid lean premixing catalytic combustion system for gas turbines A system and method of combusting a hydrocarbon fuel is disclosed. The system combines the accuracy and controllability of an air staging system with the ultra-low emissions achieved by catalytic combustion systems without the need for a pre-heater. The r... | 12/09/2003 |
| 6609379 | Gas turbine plant and method of controlling gas turbine plant A gas turbine plant for limiting a sudden increase of load of the gas turbine, i.e., of the amount of fuel, and suppressing a stress of the turbine, or for maintaining a suitable fuel-air ratio is disclosed. The plant includes a controller comprising a se... | 08/26/2003 |
| 6438937 | System and method for modular control of a multi-fuel low emissions turbogenerator A system and method for modular control of a multi-fuel turbogenerator include separate controllers for controlling fuel supplied to the combustor and power output from the generator. The power controller generates a fuel command based on the required tur... | 08/27/2002 |
| 6425240 | Combustor for gas turbine engine A gas turbine combustion includes a combustion chamber mounted within an air supply manifold. The combustion chamber preferably has a fixed downstream portion and a telescopically-movable upstream portion, a burner head provided with a fuel injector, and ... | 07/30/2002 |
| 6364602 | Method of air-flow measurement and active operating limit line management for compressor surge avoidance A transfer function between the inlet air-flow consumed by a Gas Turbine engine, and the engine parameters of speed, pressure ratio, and Inlet Guide Vane (IGV) angle is described. An active compressor Operating Limit Line (OLL) management strategy that le... | 04/02/2002 |
| 6324828 | Gas turbine engine and a method of controlling a gas turbine engine A gas turbine engine comprises a centrifugal compressor (4), an air diffuser (8), a heat exchanger (10), combustion apparatus (12), and first and second turbines (14,18). The combustion chamber assembly (22) comprises a primary, a secondary and a tertiary... | 12/04/2001 |
| 6282897 | Advanced thermo-electronic systems for hybrid electric vehicles A hybrid propulsion system for vehicles having an electronic storage and drive system for driving a vehicle and a thermal engine for charging and energizing the electrical storage and drive system, the thermal engine having a thermal energy source with a ... | 09/04/2001 |
| 6263663 | Variable-throat gas-turbine combustion chamber The present invention relates to a gas-turbine combustion chamber comprising at least a zone (11) referred to as pilot combustion zone into which at least a first pilot fuel injection means (3) and an associated first oxidizer injection means (4) open; a ... | 07/24/2001 |
| 6212872 | Pressurized fluidized-bed combined cycle power generation system A pressurized fluidized bed combined electricity generation system for improving gas turbine output increases and prevention of surging is provided. This pressurized fluidized bed combined electricity generation system is a combined electricity generation... | 04/10/2001 |
| 6209821 | Apparatus and method for measuring air temperature ahead of an aircraft for controlling a variable inlet/engine assembly The apparatus and method employ remote sensing to measure the air temperature a sufficient distance ahead of the aircraft to allow time for a variable inlet/engine assembly to be reconfigured in response to the measured temperature, to avoid inlet unstart... | 04/03/2001 |
| 6095750 | Turbine nozzle assembly A turbine nozzle assembly includes a plurality of nozzle segments and a nozzle support for supporting the nozzle segments. Each nozzle segment includes an outer band, an inner band and at least two vanes disposed between the outer and inner bands. A reten... | 08/01/2000 |
| 6082093 | Combustion air control system for a gas turbine engine Systems for controlling the combustion air to be used with a gas turbine engine for control the products of combustion and reducing emissions emitted therefrom have been used in the past. The present system includes a compressed air plenum being divided i... | 07/04/2000 |
| 6003299 | System for modulating air flow through a gas turbine fuel injector Gas turbine engines have in the past attempted to control emissions by a variety of processes or in a variety of manners. For example, past systems have used water or steam injection, and gas turbine combustion systems have utilized a variety of approache... | 12/21/1999 |
| 5937634 | Emission control for a gas turbine engine Present gas turbine engines fail to effectively and efficiently control the emission emitted therefrom. Many existing systems estimate the amount of constituents emitted within the exhaust gas verses measuring the actual quantity of constituent emitted wi... | 08/17/1999 |
| 5899058 | Bypass air valve for a gas turbine engine A bypass air valve for a gas turbine engine is provided which includes a liner, a strap, and means for selectively actuating the valve. The liner includes an inner radial surface, an outer radial surface, a plurality of first regions, and a plurality of s... | 05/04/1999 |
| 5896741 | Low emission combustion system for a gas turbine engine The control systems for reducing NOx in the combustion systems of past gas turbine engines has incorporated a variety of expensive and complicated techniques to reduce the NOx level. For example, such systems use schemes for introducing more air into the ... | 04/27/1999 |
| 5878566 | Gas turbine and a gas turbine control method A control method of a gas turbine which is provided with a multi can type combustor consisting of a plurality of unit combustors, each of which has a first stage combustion section for diffusion combustion and a second stage combustion section for premix ... | 03/09/1999 |
| 5829244 | Fuel pressure actuated air control for a combustion chamber burner A burner is disclosed for a combustion chamber of a gas turbine engine having a fuel injector mounted in an end of the combustion chamber for injecting fuel into the combustion chamber, the fuel injector having an associated air swirler for feeding primar... | 11/03/1998 |
| 5819540 | Rich-quench-lean combustor for use with a fuel having a high vanadium content and jet engine or gas turbine system having such combustors A combustor for generating hot gas in order to rotate a turbine is able to burn fuel with a high vanadium content without emitting appreciable vanadium pentoxide to the turbine. The combustor includes a primary combustion zone for burning fuel in a rich f... | 10/13/1998 |
| 5782603 | Process and apparatus for recovery from rotating stall in axial flow fans and compressors Active recovery from a rotating stall operating condition in an axial flow compression system is accomplished by altering the temperature and/or density of the working fluid flowing in the inlet of the compression system once rotating stall is detected. A... | 07/21/1998 |
| 5752379 | Non-recoverable surge and blowout detection in gas turbine engines Indications of non-recoverable compressor surge and blowout are provided by sensing compressor pressure, temperature and speed and comparing exhaust temperature with stored values and successive values depending upon instantaneous compressor speed and its... | 05/19/1998 |
