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| Number | Title | Issue Date |
| 7424360 | Overspeed control system for gas turbine electric powerplant A turbine overspeed control system for use with a gas turbine engine of a gas turbine electrical powerplant. The overspeed control system preferably comprises a first and second overspeed control subsystem. When an overspeed condition of the gas turbine engine is de... | 09/09/2008 |
| 7422543 | Rotation coupling employing torque converter and synchronization motor A system employing a torque converter and a synchronizing motor to start up a large rotational driver/load combination. The torque converter is employed to increase the rotational speed of the load to the maximum speed permitted by the torque converter. The synchron... | 09/09/2008 |
| 7415328 | Hybrid model based fault detection and isolation system Method for detecting faults in a device comprising the steps of receiving a plurality of performance parameters, applying the plurality of performance parameters to a first model to produce a plurality of estimated performance parameters, applying the plurality of p... | 08/19/2008 |
| 7369932 | System and method for turbine engine fault detection using discrete event system modeling A system and method is provided for fault detection in a turbine engine. The fault detection system and method uses discrete event system modeling to provide improved fault diagnosis and prognosis. The fault detection system and method receives sensor taken at multi... | 05/06/2008 |
| 7286923 | System and method for estimating turbine engine deterioration rate with noisy data A method for monitoring engine performance includes sampling exhaust gas temperature associated with a turbine engine over an interval of operational time of the turbine engine. The method further includes applying a first test to identify statistical outliers on th... | 10/23/2007 |
| 7276016 | Speed control method for working vehicle A working vehicle in which while an operation degree of a speed change operation member is increased from 0 to a certain value, the increase of the vehicle traveling speed is produced by a first increase rate of an engine rotation speed and a first increase rate of ... | 10/02/2007 |
| 7246002 | Method for controlling fuel splits to gas turbine combustor A method for determining a target exhaust temperature for a gas turbine including: determining a target exhaust temperature based on a compressor pressure condition; determining a temperature adjustment to the target exhaust temperature based on at least one paramet... | 07/17/2007 |
| 7069137 | Valve flow metering control system and method A turbine valve control system is provided. The turbine valve control system includes a variable flow metering device, a first sensor, a second sensor, a third sensor, a fourth sensor, memory, and processing circuitry. The variable flow metering device is capable of... | 06/27/2006 |
| 6973419 | Method and system for designing an impingement film floatwall panel system A method and system for designing an impingement film floatwall panel system for a combustion chamber for a gas turbine engine comprising the steps of creating an impingement film floatwall panel knowledge base of information. The knowledge base has a plurality of d... | 12/06/2005 |
| 6941217 | Microprocessor-based control system for gas turbine electric powerplant A microprocessor-based control system for a gas turbine electrical powerplant. the microprocessor-based control system controls the startup, operation, and shutdown of the gas turbine electric powerplant. The microprocessor-based control system of the present invent... | 09/06/2005 |
| 6909960 | Method for performing gas turbine performance diagnostics A method of performing diagnostics on a system comprises receiving a plurality of measurement parameters, each corresponding to one of a plurality of parameters at a time k, forming a deviation vector from the plurality of measurement parameters, calculating an init... | 06/21/2005 |
| 6898547 | Rotor assembly system and method A system is disclosed for use in assembling a plurality of rotatable elements in the assembly of a turbine engine. The system includes an initialization unit, a measurement unit, and a processing unit. The initialization unit is for entering initialization data into... | 05/24/2005 |
| 6882924 | Valve flow control system and method A turbine valve control system is provided. The turbine valve control system includes a variable flow metering device, a first sensor, a second sensor, a third sensor, a fourth sensor, memory, and processing circuitry. The variable flow metering device is capable of... | 04/19/2005 |
| 6834226 | Multiple control loop acceleration of turboalternator after reaching self-sustaining speed previous to reaching synchronous speed A method of operating a turboalternator when the turbine engine speed is between synchronous speed and self-sustaining speed. ... | 12/21/2004 |
| 6789000 | Microprocessor-based control system for gas turbine electric powerplant A microprocessor-based control system for a gas turbine electrical powerplant the microprocessor-based control system controls the startup, operation, and shutdown of the gas turbine electric powerplant. The microprocessor-based control system of the present inventi... | 09/07/2004 |
| 6732040 | Workscope mix analysis for maintenance procedures Maintenance procedures for an article such as a component of a gas turbine engine are analyzed by defining a set of workscopes that may be performed upon the article, gathering maintenance frequency information for each type of subsequent trailing workscope that may... | 05/04/2004 |
| 6591182 | Decision making process and manual for diagnostic trend analysis A decision making process for evaluating performance shifts identified during a diagnostic trend analysis of gas turbine engine data includes first determining whether each performance shift is actionable, and then determining what maintenance action is r... | 07/08/2003 |
| 6434473 | Gas turbine aeroengine control system In a control system for a gas turbine aeroengine having a control unit made up of an electronic control unit (ECU) which calculates a fuel flow rate command value based at least on the detected rotational speed of the turbine and the desired power output ... | 08/13/2002 |
| 5938712 | Drive shaft torque controlling apparatus for use in a vehicle having a power transmission mechanism and method therefor At a torque converter characteristic assuming unit, during non gear shift, gear ratio and an input shaft torque are assumed and also during gear shift, accessory torque is assumed. So as to correct the accessory torque a deviation between pump torque and ... | 08/17/1999 |
| 5457633 | Apparatus for limiting horsepower output of an engine and method of operating same A horsepower limiting engine control limits the maximum engine horsepower output during operating conditions that might result in torque outputs that are greater than the transmission component ratings. The control includes an electronic controller connec... | 10/10/1995 |
| 5233888 | Method and system of controlling shift of transmission speed ratio for gas turbine engine vehicle In a gas turbine engine vehicle having a two-shaft type gas turbine engine including a gas generator constituted by a compressor and a compressor turbine arranged coaxially with the compressor, a combustion chamber, a variable nozzle, and a power turbine ... | 08/10/1993 |
| 5046923 | Helicopter autorotation detection and recovery The existence of autorotation of a load (e.g., a helicopter rotor system) coupled to the free turbine of a gas turbine engine is determined and a signal indicative thereof enables an integrator which, upon autorotation, integrates rate-based recovery anti... | 09/10/1991 |
| 5023789 | Temperature compensated closed loop control of a hydraulically controlled clutch and APU starting system A temperature compensated control system (100) for a hydraulically controlled clutch (18) for controlling a source of rotary power to a load (101) for accelerating the load from a first velocity to a second velocity within a time interval measured from a ... | 06/11/1991 |
| 4947970 | Dual clutch control system A control system for a vehicle drive train includes a controller which is responsive to a throttle signal from a throttle position sensor and which controls a clutch unit to control speed and acceleration and to obtain optimum driver "feel". The system is... | 08/14/1990 |
| 4576062 | High efficiency gear transmission A mechanical gear transmission between an engine and a load includes shiftable speed change gearing. Brakes or clutches are provided for shift synchronization when changing to different speeds. Positioned between the engine and the gearing is a main synch... | 03/18/1986 |
| 4384639 | Two-way power transferring reduction gear of the epicyclic type A reversing/reduction gear connecting a marine gas turbine to a propulsion shaft is of the epicyclic type, and includes two sun wheels, two sets of planetary gear wheels, two planetary gear wheel carriers and two external ring wheels, means being provided... | 05/24/1983 |
| 4271940 | Two-way power transferring reduction gear of the epicyclic type A reversing/reduction gear connecting a marine gas turbine to a propulsion shaft is of the epicyclic type, and includes two sun wheels, two sets of planetary gear wheels, two planetary gear wheel carriers and two external ring wheels, means being provided... | 06/09/1981 |
| 4269027 | Gas turbine engine idle control and method A free turbine gas turbine engine with an automatic idle reset control and method which anticipates requirement for engine acceleration and increases idle speed before request for acceleration is received.... | 05/26/1981 |
| 4267738 | Turning device especially for driving a turbine shaft A turning device preferably for turbine-machines is disclosed having a turning-gear pinion arranged on a cam so that the axes of rotation of the cam, the turning-gear pinion and the shaft to be turned are aligned in a central line. To turn the shaft, the ... | 05/19/1981 |
| 4266401 | Gas turbine engine fuel control A control system for a gas turbine engine includes provisions for adjusting fuel flow in relation to gas generator speed, and for adjusting guide vane position in relation to power turbine speed.... | 05/12/1981 |
| 4263826 | Transmission with dual modulated shift controls A multispeed transmission having an automatic shift control system having an automatic shift valve which is biased for upshift by a force increasing with output speed of the transmission and is biased for downshift by a force increasing concurrently with ... | 04/28/1981 |
| 4223770 | Shaft drive alternately for both directions of rotation A shaft drive alternately for both directions of rotation, comprises, a shaft rotatably supported on bearings having first and second turbines connectable thereto, each including a respective first and second turbine wheel freely rotatable on the shaft in... | 09/23/1980 |
| 4082011 | Engine and transmission power train The power train has a manual throttle controlled gas turbine engine having a high no load idle speed and a transmission having a low capacity fluid coupling and a variable capacity slipping friction clutch connected in parallel to the input of a multirati... | 04/04/1978 |
| 4036083 | Drive engagement pressure control by trimmer bias control A transmission having selectively engaged fluid actuated friction drive establishing devices and an engagement timing control system having a trimmer regulator valve for each drive establishing device, a trimmer bias regulator valve and accumulator. The o... | 07/19/1977 |
| 4018316 | Engine and transmission power train The power train has a manual throttle controlled gas turbine engine having a high no load idle speed and a transmission having a low capacity fluid coupling and a variable capacity slipping friction clutch connected in parallel to the input of a multirati... | 04/19/1977 |
| 3999449 | Turbine engine compressor discharge pressure modulated transmission A gas turbine engine and automatic transmission power train having a modulator valve controlled by an engine compressor pressure and altitude responsive force actuator and a speed governor to provide a modulator pressure increasing with increasing engine ... | 12/28/1976 |
| 3941015 | Gas turbine engine power shift transmission power train A power train having a gas turbine engine with controlled power transfer between the load turbine drive train and the compressor turbine drive train and a power shift transmission is shown. The engine control system includes a fuel control responsive to i... | 03/02/1976 |
