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4716723 |
Fuel controls for gas turbine engines
Apparatus for controlling the flow rate of fuel fed to a gas turbine engine, particularly but not exclusively to prevent overspeeding of the engine above a maximum safe level in the event of...
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4716719 |
Method of and apparatus for controlling fuel of gas turbine
A method of controlling fuel of a gas turbine provided with a two-stage combustion type combustor wherein the fuel of gas is fed to the combustor only through a primary fuel nozzle under a low-run...
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4716531 |
Two lane engine control system
A control system for a gas-turbine engine has two parallel control units, either one of which can be switched to supply control signals to the engine in response to input signals, such as from the...
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4712372 |
Overspeed system redundancy monitor
A redundancy monitor is presented which makes operational checks on the electronic overspeed control system used on aircraft turbine engines. The monitor is a small and lightweight device that can...
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4697238 |
Integrated fuel management system
A low cost, integrated, aircraft fuel management system. A system control unit receives engine variable signals and provides a signal to a motor control unit which thereby controls a variable speed...
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4686825 |
System for supplying fuel to an aircraft engine
This invention relates to a system for supplying fuel to an aircraft engine, wherein an electronic computer subdivides the stroke of the throttle lever into a plurality of zones, in each of which...
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4656827 |
Fuel metering system for a gas turbine engine
A fuel metering system for a gas turbine engine is disclosed which includes two rotating flowmeters connected to the fuel supply circuit in parallel. The speed of the flowmeters are controlled by a...
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4651518 |
Transient derivative scheduling control system
By utilizing compensating parameters required for steady state operation of a gas turbine engine with processed variables of compressor speed, compressor pressure and altitude a derivative of the...
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4649700 |
Fuel control system
A fuel control system is provided for a turbine engine for delivering fuel from a fuel source and to the turbine engine combustion chamber to maximize fuel economy engine efficiency. The fuel...
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4648242 |
Apparatus for providing a constant fuel consumption rate for a fuel powered turbine
The apparatus of the present invention is designed for use with a source of natural gas which is substandard in that its BTU content is inconstant. The apparatus includes a fuel powered turbine...
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4640093 |
Fuel metering system
A metering valve (20) for supplying a turbine engine with a fuel at a substantially constant flow rate in response to operational conditions evaluated by a computer (28). A signal from the computer...
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4634887 |
Load rate limiting means for a locomotive engine
The propulsion control system of a diesel-electric locomotive includes means responsive to the rotational speed and the gross horsepower of a locomotive engine for controlling the rate at which...
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4627234 |
Gas turbine engine/load compressor power plants
Single shaft, air breathing auxiliary power units having a single stage centrifugal load compressor driven by a gas turbine engine. The latter has a single stage centrifugal compressor and a single...
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4625510 |
Stress limiter apparatus for a gas turbine engine
A stress limiter apparatus for a gas turbine engine (10) is disclosed. A proportional fuel fuel control (11) regulates the fuel flow (Wf) from a hydromechanical unit (36) based upon an error signal...
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4619110 |
Helicopter engine warning or control system
A helicopter turbine engine over-stress warning and protection system includes arrangements for sensing the engine temperature, the engine speed, and the output torque from the engine. An audible...
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4612616 |
Fuel control system for a gas turbine engine
The main metering valve of a gas turbine fuel control system is positioned by a servo pressure signal controlled by a servo valve. The servo valve is positioned by the sum of forces derived from...
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4608820 |
Dual stepper motor actuator for fuel metering valve
A fuel control for a gas turbine engine has an actuator (24) for a fuel metering valve (22) which includes two stepper motors (46 and 48) which selectively drive a differential mechanism...
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4608880 |
Push pull multiplier linkage
A mechanical multiplier (25) in a fuel control for a gas turbine engine has a first track member (26) mounted for lateral movement and a first axially movable displacement member (34) connected to...
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4606191 |
Control systems for gas turbine aeroengines
A fuel control unit forms part of a control system of a gas turbine aeroengine. The control unit is in communication with a main fuel line leading to the aeroengine and comprises a fuel...
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4606189 |
Fuel control
The present invention concerns a fuel control for a gas turbine aircraft engine. The control de-riches fuel-air mixture during ground start-ups in order to reduce a temperature within the engine.
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4602479 |
Fuel control
A reduced fuel flow to a gas turbine engine experiencing impending overspeed operating conditions is provided through a line (250) which bypasses the main shutoff valve (70) of the engine's fuel...
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4594852 |
Aircraft engine control
In the present invention, fuel flow in an aircraft is modulated automatically in order to maintain a preselected altitude.
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4593523 |
Method and apparatus for acceleration limiting a gas turbine engine
A method and apparatus for acceleration limiting a gas turbine engine (10) is disclosed. A proportional fuel control (11) regulates the fuel flow Wf from a hydromechanical unit (36) based upon an...
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4591317 |
Dual pump controls
Controls for a dual element pump having first and second pumps with separate outputs wherein a modulating valve is positionable to control the amount of fuel delivered by a first pump to a fuel...
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4588954 |
Apparatus for processing of pyrometer signals
A circuit is provided for eliminating the effects of spurious signals from a pyrometer in a gas turbine engine. The pyrometer signal is fed to a part of the circuit (8,12,16,20,24) which produces...
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4578945 |
Overspeed limiter for gas turbine fuel control
A fuel control for a gas turbine engine has a positive displacement pump (28) for supplying fuel to the engine. Fuel flow from the pump is metered by a metering valve (30) which has a constant...
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4567786 |
Modular multi-engine thrust control assembly
A modular thrust control lever assembly for manual pilot control of the forward/idle/reverse thrust operational modes of multiple engine aircraft and including manually manipulable pilot control...
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4566266 |
Automatic temperature compensated fuel flow regulation
This invention relates to a method of achieving a desired fuel/oxygen mass ratio in an internal combustion engine for an existing ambient air temperature comprising of the steps of determining a...
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4557106 |
Combustion system for a gas turbine engine
A combustion system for gas turbine engines incorporates a feedback loop which provides positive damping for the control of unstable combustion, particularly buzz in reheat systems, but also at...
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4551972 |
Engine management system
A limited authority system for controlling engine performance in accordance with energy or thrust requirements in response to engine parameters which is capable of operating in a number of control...
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4545198 |
Gas turbine engine control system
An apparatus for controlling a gas turbine engine. A control device is provided for controlling the energy conversion function of the engine. Adjustments of the control device are obtained by...
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4543782 |
Gas turbine engine fuel control systems
A gas turbine engine fuel control system includes a transducer N which provides a signal representing engine speed. An N schedule signal generator receives the N signal and generates an...
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4541237 |
Sub-idle speed control apparatus for an airplane turbine engine
A sub-idle speed control apparatus for reducing the thrust of an airplane turbine engine is provided. The subject invention reduces the compressor discharge pressure measured by an existing...
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4537025 |
Electronic fuel control with manual training mode
A fuel control for a gas turbine engine is operable in a training mode in addition to the conventional automatic and manual back-up modes. In the training mode the manual mode is simulated, with...
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4531361 |
Torsional mode suppressor
Damping of a helicopter rotor drive train, the drive train including the free turbines of a gas turbine engine propulsion system, the aircraft main and tail rotors, and associated shafts and gears,...
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4525783 |
Method and apparatus for determining the individual manipulated variables of an internal combustion engine, and in particular of a gas turbine
A method and an apparatus for determining the individual manipulated variables of an internal combustion engine such as a gas turbine or the like derived on the basis of given and measured...
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4522026 |
Power/torque limiter unit for free turbine type engines
The disclosure teaches an improvement in a free turbine type engine which comprises a power limit unit. The unit includes a first sensor for measuring pressure at the turbine inlet, and a second...
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4517796 |
Power lever apparatus for a turbine engine
In a turbine engine having a compressor with a bleed valve and a variable geometry apparatus is responsive to an operational control member for regulating the flow rate of fuel supplied the turbine...
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4517797 |
Fuel control method for gas turbine
A fuel control method for a gas turbine based on a digital computer. A control system for fuel control, an acceleration control system, an exhaust gas temperature control system, a speed (governor)...
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4508127 |
Fuel mass flow measurement and control system
A turbine engine fuel measuring and control system which incorporates a fluidic density sensor which is unaffected by variations in the physical characteristics of the fuel supplied to the engine.
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4507915 |
Stall detector and surge prevention feature for a gas turbine engine
A proportional fuel fuel control (11) regulates the fuel flow (Wf) from a hydromechanical unit (36) based upon an error signal (E) representing the difference between a demanded speed signal (Nd)...
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4506503 |
Gas turbine engine fuel controller
A controller [20] for scheduling the flow of a liquid fuel to a gas turbine engine [16]. The controller includes a fuel valve assembly [246], a compressor discharge pressure responsive (P CD )...
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4503670 |
Deceleration limiter, particularly for a turbine engine
The invention relates to a deceleration limiter for a turbine engine. Through a rotary cam and a compressed spring, the throttle lever acts on a regulator for the fuel injector, for instance on the...
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4498016 |
Locomotive governor control
A digital processor implemented electronic governor for engine-generator units including a first control loop for producing a speed error and controlling fuel delivery setting as a function thereof...
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4490791 |
Adaptive gas turbine acceleration control
An acceleration schedule, from which data is derived for use in calculating fuel flow during acceleration of a gas turbine engine, is modified each time the engine surges so as to avoid future surges.
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4476675 |
Acceleration limiter for turbojet engine
An acceleration limiter is disclosed which includes a hydraulic accumulator (10) with a piston (10a), a spring, (10d) and a chamber 10b) for receiving the pressure Pi residing in the fuel supply...
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4470257 |
Isochronous and droop speed control for a combustion turbine
A speed and load control for a combustion turbine utilized in the generation of electric power includes means for effecting a smooth transition between the isochronous and droop modes of control....
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4470118 |
Gas turbine engine fuel control
The ability of a gas turbine engine to recover from surge is enhanced by implementing a closed loop control mode wherein fuel flow is varied as a function of the ratio of the rate of change of...
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4468924 |
Turbine engine power optimization control system
Pushbutton controls are provided for the power management of a turbine powered aircraft; and these pushbuttons may be mounted on the aircraft pilot's control handwheel. The turbine engine has a...
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4467599 |
Turboran speed limiting control system
The maximum speed of a turbofan engine varies in accordance with moderately complex relationships involving the temperature, the pressure or altitude, and whether or not the subordinate systems...
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