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| Number | Title | Issue Date |
| 8043045 | Actuator Actuators utilising shape memory alloy materials are known with regard to gas turbine engines. Such shape memory alloys have been used with respect to deformation provided in vanes and blades as well as nozzle elements in order that variations can be made in engine ... | 10/25/2011 |
| 8021103 | Pressure activated flow path seal for a steam turbine A pressure activated flow path seal for a steam turbine is disclosed. In one embodiment a gap closure component is located about a rotary component and the stationary component of the steam turbine. A pressure differential activates the gap closure component to seal... | 09/20/2011 |
| 7422414 | Inlet guide vane control device of gas turbine An IGV opening command is set based on an IGV opening A set by an exhaust gas temperature control section, an IGV opening B set by a compressor surge protective control section, and an IGV opening C set by an exhaust gas pressure protective control section. The valu... | 09/09/2008 |
| 7393179 | Variable position turbine nozzle An apparatus and method are provided for permitting free rotation of turbine nozzle vanes, while minimizing or eliminating leakage on the vane side-walls. The device incorporates a plurality of nozzle vanes arranged around the circumference of a radial or mixed infl... | 07/01/2008 |
| 7326027 | Devices and methods of operation thereof for providing stable flow for centrifugal compressors Centrifugal compressor flow stabilizing devices and methods of operation thereof are disclosed that act upon the flow field discharging from the impeller of a centrifugal compressor and modify the flow field ahead of the diffuser vanes such that flow conditions cont... | 02/05/2008 |
| 7293953 | Integrated turbine sealing air and active clearance control system and method An active clearance control system is provided that uses compressor extraction air to manipulate blade tip clearance in an industrial gas turbine and compressor. A stream of air is taken from a cooling and sealing air circuit and redirected to be used for active cle... | 11/13/2007 |
| 7280950 | Locomotive diesel engine turbocharger and turbine stage constructed with turbine blade vibration suppression methodology A method for fabrication of a locomotive diesel engine turbocharger turbine stage so as to avoid harmonic vibration in the turbine blades when the engine is operated at pre-selected throttle settings. Upon determining throttle settings for the engine and modeling of... | 10/09/2007 |
| 7210895 | Turbo compressor and method of operating the turbo compressor A turbo-compressor being driven by an electric motor has an inlet guide vane and a blow-off valve. The surge limit line of the compressor is amended depending upon seasonal changes of temperature and pressure of a working gas to be sucked into the compressor. Upon t... | 05/01/2007 |
| 7186076 | Exhaust gas turbine In an exhaust gas turbine for a turbocharger of an internal combustion engine, including a housing with an inlet passage for conducting exhaust gas onto a turbine wheel supported in the housing, a guide vane structure movable into, and out of, an annular space of th... | 03/06/2007 |
| 7186071 | Variable flow water pump A variable flow water pump includes a housing having an impeller mounted on a rotatable shaft. The pump impeller has a plurality, of vanes fixed to a back plate or flange. A circumferentially surrounding shroud is axially movable within the housing and may move betw... | 03/06/2007 |
| 7160083 | Method and apparatus for wind turbine rotor load control Vertical and horizontal wind shears, yaw misalignment and/or turbulence act together to produce asymmetric loading across a wind turbine rotor. The resultant load produces bending moments in the blades that are reacted through the hub and subsequently to the low-spe... | 01/09/2007 |
| 7137778 | Variable turbine geometry turbocharger A turbocharger arrangement for a variable geometry turbocharger including pivotable vanes (34) with each vane (34) having a respective vane bore (38) for receiving a vane post (28) into a vane first planar surface (80) and a respec... | 11/21/2006 |
| 7127939 | Measuring method on an electric motor and measuring device for an electric motor for determining the fly height and/or axial play To provide a measuring method on an electric motor with a rotor and a stator for determining the fly height and/or axial play, the rotor being mounted, and in particular fluid-mounted, on the stator, with which method the axial position of the rotor in relation to t... | 10/31/2006 |
| 7111461 | System and method for testing a rotary flow device A diagnostic system and method for testing the operation of a rotary flow device, such as a turbine or compressor of a turbocharger with a variable-geometry mechanism, such as adjustable vanes, is provided. The system includes a flow generator configured to provide ... | 09/26/2006 |
| 7048503 | Exhaust-gas turbine for turbochargers In an exhaust gas turbine for a turbocharger of an internal combustion engine with a casing and a rotor rotatably supported in the casing, the casing includes an inlet duct with a guide vane structure supported so as to be movable into and out of a flow inlet area t... | 05/23/2006 |
| 7021895 | Fan module with integrated diffuser Disclosed is a fan module. In one embodiment, the fan module includes a fan having an inlet end and an exit end, and a fan housing in which the fan is positioned, the fan housing including at least one angled interior wall adjacent the exit end of the fan that diffu... | 04/04/2006 |
| 7004724 | Method and apparatus for wind turbine rotor load control based on shaft radial displacement Vertical and horizontal wind shears, yaw misalignment and/or turbulence act together to produce asymmetric loading across a wind turbine rotor. The resultant load produces bending moments in the blades that are reacted through the hub and subsequently to the main sh... | 02/28/2006 |
| 6951450 | Variable geometry turbocharger A cartridge is formed by an insert fixed to a base to form turbine intake nozzles in which vanes are rotatably mounted, and the base is fixed to a center housing. A separate exhaust housing which is formed from sheet metal is fixed to the cartridge outside of the in... | 10/04/2005 |
| 6916153 | Guiding grid of variable geometry and turbocharger A guiding grid of variable geometry comprises a plurality of guiding vanes in a housing in angular distances around a central axis in an axially extending vane space of a predetermined axial distance. Each vane is pivotal about an associated pivoting axis to assume ... | 07/12/2005 |
| 6793456 | Turbo-compressor and capacity control method thereof A turbo-compressor comprises a compressor main body for compressing an operation fluid, an inlet guide vane apparatus being provided on a suction side of the compressor main body and having guide vanes, and a blow-off valve being provided in a discharge said compres... | 09/21/2004 |
| 6755609 | Radial pump A radial-flow pump (1), and especially a coolant pump for an internal combustion engine, comprising an impeller (2) provided with vanes (5) and a directing device (4) including at least one temperature- and/or speed-sensitive element for ... | 06/29/2004 |
| 6341238 | Robust engine variable vane monitor logic A method of testing an actuation system for positioning an actuator, the actuation system including a primary electronic system, a secondary hydro-mechanical system is disclosed. The method includes the steps of measuring the actual position of the actuat... | 01/22/2002 |
| 6220814 | Turbine interstage sealing arrangement A gas turbine sealing arrangement which includes a seal housing having at least one seal in close proximity to the turbine rotor. The seal housing is preheated prior to turbine start-up to thermally move the seal housing and its seal radially away from th... | 04/24/2001 |
| 6155038 | Method and apparatus for use in control and compensation of clearances in a gas turbine A method and an apparatus for use with a gas turbine engine receive a signal indicative of an engine operating condition, generate signals representative of thermal conditions of a rotor, blades, and a case, and in response to each of the signals above, d... | 12/05/2000 |
| 6146090 | Cooling/heating augmentation during turbine startup/shutdown using a seal positioned by thermal response of turbine parts and consequent relative movement thereof In a turbine rotor, a thermal mismatch between various component parts of the rotor occurs particularly during transient operations such as shutdown and startup. A thermal medium flows past and heats or cools one part of the turbine which may have a delet... | 11/14/2000 |
| 6129511 | Method and apparatus for controlling interaction between variable guide vanes and variable diffuser of a centrifugal compressor A method and apparatus for controlling the amount of gas flow through a compressor having variable geometry guide vanes and a variable geometry diffuser. The geometry variation of the diffuser is based on the geometry variation of the guide vanes. The met... | 10/10/2000 |
| 6042331 | Pump-turbine An upper reservoir-side conduit or a lower reservoir-side conduit is branched in the vicinity of pump-turbine ends and at least a first pump-turbine out of a plurality of pump-turbines which share the conduit portions located farther than the branch point... | 03/28/2000 |
| 6036432 | Method and apparatus for protecting centrifugal compressors from rotating stall vibrations A fluid passage extends through the compressor casing from a point near the tip of the impeller to a transducer located externally of the compressor casing. Responsive to fluctuations of pressure sensed by the transducer indicative of rotating stall, the ... | 03/14/2000 |
| 5984625 | Actuator bandwidth and rate limit reduction for control of compressor rotating stall A compressor is disclosed having a characteristic modifier, such as air injection, adapted to modify an operating characteristic of the compressor in order to reduce the bandwidth and rate limit requirements of the compressor. The compressor includes an a... | 11/16/1999 |
| 5938401 | Automatic engine hydro-mechanical control unit preflight test A method of testing an actuation system for positioning an inlet guide vane, the actuation system including a primary electronic system, a secondary hydro-mechanical system is disclosed. The method includes the steps of controlling the position of the inl... | 08/17/1999 |
| 5669756 | Recirculating diffuser A centrifugal compressor having an impeller wheel mounted for rotation about a central axis and a diffuser for emptying compressed fluid into a collector chamber. A plenum chamber is located behind the impeller shroud and series of deswirl passages are lo... | 09/23/1997 |
| 5340274 | Integrated steam/air cooling system for gas turbines A steam or air cooled combined cycle gas turbine includes first and second turbine stages and a second nozzle stage. During start-up, cooling air is supplied radially inwardly through the second stage nozzle for flow into the gas flow through the turbine ... | 08/23/1994 |
| 5284347 | Gas bearing sealing means A gas bearing face seal assembly for a gas turbine engine having improved sealing characteristics. The assembly can include support means which concentrically position a face seal member with respect to a seal radius, while permitting translation of the f... | 02/08/1994 |
| 5267829 | Flow control apparatus for a turbocharger turbine In a flow control apparatus of an exhaust gas turbocharger turbine for an internal combustion engine including a rotor disposed in a turbine casing having a spiral guide channel arranged around the rotor with a mouth area defining an inlet opening for dir... | 12/07/1993 |
| 5253976 | Integrated steam and air cooling for combined cycle gas turbines A steam or air-cooled combined cycle gas turbine includes first and second turbine stages and a second nozzle stage disposed about a spacer between the turbine stages. Cooling steam is passed through the nozzle vanes radially inwardly and through the seal... | 10/19/1993 |
| 5235803 | Auxiliary power unit for use in an aircraft Inefficiencies in the operation of auxiliary power units producing electric and hydraulic power along with bleed air resulting from independence in the demand for power may be minimized in a system including at least one bleed air consuming system (84, 86... | 08/17/1993 |
| 5211530 | Variable breadth impeller that provides a specific shutoff head In accordance with the present invention, an improved variable breadth imler for use in a variable capacity centrifugal pump and a method for adapting a variable capacity centrifugal pump to produce a specific predetermined shutoff head are provided. The... | 05/18/1993 |
| 5169286 | Variable capacity centrifugal water pump with movable pressure chamber formed by impeller This invention relates to an improvement on a centrifugal pump including: a casing defining an inlet path extending at the axial portion thereof, a turbine chamber communicating with the inlet path, and an outlet path disposed at the outer periphery porti... | 12/08/1992 |
| 5165844 | On-line stall margin adjustment in a gas turbine engine The deflection angle of a gas turbine stator is adjusted in proportion to the difference between two parameters computed from N2 and TT2 using the same function generator. One parameter is a reference adjustment under standard conditions for me... | 11/24/1992 |
| 5165845 | Controlling stall margin in a gas turbine engine during acceleration Stall margin in a gas turbine compressor is controlled during acceleration by synthesizing the thermal enlargement of critical compressor stages to synthesize the temporary increase in blade-case clearance during acceleration. The change in clearance is u... | 11/24/1992 |
