The subject matter of this specification can be embodied in, among other things, a fuel delivery component, including a substantially rigid, unitary structure formed as a single piece of material, and at least a first seamless lumen defined by the unitary structure.
B33Y 80/00 - Produits obtenus par fabrication additive
F02K 3/10 - Ensembles fonctionnels comportant une turbine à gaz entraînant un compresseur ou un ventilateur soufflant avec réchauffage supplémentaire du fluide de travail; Leur commande par postcombustion
F23R 3/20 - Moyens de stabilisation de la flamme, p.ex. accroche-flamme de postcombustion d'ensembles fonctionnels à propulsion par réaction comprenant des moyens d'injection du combustible
The subject matter of this specification can be embodied in, among other things, a fuel delivery component, a substantially rigid, unitary structure formed as a single piece of material, and at least a first seamless lumen defined by the unitary structure as a first loop.
B33Y 80/00 - Produits obtenus par fabrication additive
F02K 3/10 - Ensembles fonctionnels comportant une turbine à gaz entraînant un compresseur ou un ventilateur soufflant avec réchauffage supplémentaire du fluide de travail; Leur commande par postcombustion
F23R 3/20 - Moyens de stabilisation de la flamme, p.ex. accroche-flamme de postcombustion d'ensembles fonctionnels à propulsion par réaction comprenant des moyens d'injection du combustible
A tip (20) for a nozzle (22) of a fuel injector and an associated method are provided. The tip (20) includes a tip body (30) and a swirler (32). The swirler (32) includes a plurality of pre-swirl passages (58) which fluidly communicate an internal cavity of the swirler with a feed annulus (62). The swirler also includes a plurality of swirl chamber passages (68) which fluidly communicate a swirl chamber (70) with the feed annulus (62). Methods include manufacturing at least a portion of the swirler by additive manufacturing.
F23D 11/38 - Ajutages; Dispositifs de nettoyage des ajutages
F02M 61/16 - Injecteurs de combustible non couverts dans les groupes ou - Détails non couverts dans les groupes ou présentant un intérêt autre que celui visé par ces groupes
F23D 11/24 - Brûleurs à pulvérisation directe de gouttelettes de liquide ou de liquide vaporisé dans l'enceinte de combustion le combustible étant comprimé avant un ajutage d'où il est pulvérisé dans une enceinte du fait d'une réduction appréciable de la pression
A gas turbine combustor assembly includes a primary combustion chamber in fluid communication with a primary fuel injector and a primary air inlet. A torch igniter is carried by the primary combustion chamber, and includes an auxiliary combustion chamber housing comprising a mixing chamber and a throat region converging downstream of the mixing chamber. An air swirler including a plurality of swirl openings surrounding an outlet of an auxiliary fuel injector is coupled to the auxiliary combustion chamber proximate the mixing chamber. An ignition source projects into the mixing chamber of the auxiliary combustion chamber.
A liquid ring side channel pump including a housing (102) defining an impeller cavity (106) with an inlet port (108) and a discharge port (110). An impeller (104) is positioned within the impeller cavity (106) for rotation about a central rotational axis (118). The impeller (104) includes a central hub (120) defining a conical outer surface and a plurality of angularly spaced apart main vanes (122) extending radially outward from the conical outer surface relative to the central rotational axis (118). The inlet and discharge ports (108,110) may be located on a same side of the pump housing (102). A method of pumping an air/fuel mixture is also disclosed.
A boost pump unit (110) includes a liquid ring pump (116) and an air/ fuel separator (118) having an inlet (124) and first (126) and second (130) outlet ports. The separator inlet (124) is operably fluidly coupled to an outlet of the liquid ring pump (116). The air/fuel separator (118) has an arcuate flow path (132) and the first outlet port (126) is in fluid communication with a radially outer portion of the arcuate flow path (132) and the second outlet port (130) is in fluid communication with a radially inner portion of the arcuate flow path (132). A return line (120) connected to the first outlet port (126) is configured to return fuel to the liquid ring pump (116). A fuel system and a method of pumping fuel are also disclosed.
A semi-tubular vane air swirler is provided. In one embodiment the air swirler is a deep drawn sheet metal component having a first and a second set of semi-tubular vanes formed therein. In one embodiment the semi-tubular air vanes include a first and a second portion formed by upsetting the sheet metal in opposing directions to create mirrored vane geometry, thereby doubling the open area of the vane.
F02M 61/16 - Injecteurs de combustible non couverts dans les groupes ou - Détails non couverts dans les groupes ou présentant un intérêt autre que celui visé par ces groupes
8.
INTEGRAL PLUS PROPORTIONAL DUAL PUMP SWITCHING SYSTEM
A dual-pump fluid distribution system that includes a first pump having an inlet and an outlet, and configured to supply a first flow of fluid, and a second pump having an inlet and an outlet, and configured to supply a second flow of fluid. In an embodiment, a bypass flow valve with a four-way hydraulic bridge is configured to initiate the switch between single-pump mode and dual-pump mode based on fluid flow demand. The bypass flow valve is configured such that the position of the bypass flow valve member relative to the four-way hydraulic bridge operates a pump selector valve. In an embodiment, the pump selector valve has a valve member, a biasing element, and a pressure switching port, and is configured such that the position of the valve member determines whether the second flow of fluid is combined with the first flow of fluid.
A variable performance valve for use in a fuel nozzle is presented. The valve includes a spring, an inner spool having a port, an outer sleeve, and an orifice, which in a fuel nozzle application may be a calibration orifice. In a low flow condition, the inlet to downstream pressure is the spring force divided by the area on which the pressure acts. At low flow the orifice does not cause any appreciable pressure drop. As the flow increases, a pressure drop develops across the orifice. Since the pressure drop across the valve cannot be greater than the spring force divided by valve area, the valve is forced to open to compensate. As flow is increased, the valve will stroke completely open and the pressure drop at the port becomes negligible and the pressure drop across the orifice is nearly 100% of the pressure drop across the valve.
F02C 7/232 - Soupapes pour combustible; Systèmes ou soupapes de drainage
F02C 7/22 - Systèmes d'alimentation en combustible
F16K 11/07 - Soupapes ou clapets à voies multiples, p.ex. clapets mélangeurs; Raccords de tuyauteries comportant de tels clapets ou soupapes; Aménagement d'obturateurs et de voies d'écoulement spécialement conçu pour mélanger les fluides dont toutes les faces d'obturation se déplacent comme un tout comportant uniquement des tiroirs à éléments de fermeture glissant linéairement à glissières cylindriques
10.
BALANCED PRESSURE, VARIABLE DISPLACEMENT, DUAL LOBE, SINGLE RING, VANE PUMP
A pump including a pressure plate having two inlets and outlets, wherein each inlet has an auxiliary intake port in fluid communication with the inlet, and each outlet has an auxiliary discharge port in fluid communication with the outlet, and a cam/rotor assembly attached to the pressure plate. The cam/rotor assembly includes a rotatable cam having an opening, a rotor within the cam opening, the rotor having multiple radial slots, and multiple vanes that move within the slots, wherein a pumping chamber is defined by a space between rotor and cam. Rotor rotation within the cam causes the vanes to extend and retract within the pumping chamber. The movement of the vanes discharges into the outlets and auxiliary discharge ports a fluid drawn into the pumping chamber via inlets and auxiliary intake ports. The auxiliary inlet and auxiliary discharge ports reduce pressure pulsations in a variable displacement dual-lobe vane pump.
F04C 18/344 - Pompes à piston rotatif spécialement adaptées pour les fluides compressibles possédant les caractéristiques couvertes par au moins deux des groupes , , , , ou par l'un de ces groupes en combinaison avec un autre type de mouvement entre les organes coopérants ayant à la fois le mouvement défini dans l'un des groupes ou et un mouvement alternatif relatif entre les organes coopérants les organes obturateurs ayant un mouvement alternatif par rapport à l'organe interne
F02M 37/04 - Alimentation au moyen de pompes entraînées
F02M 59/12 - Pompes spécialement adaptées à l'injection de combustible non couvertes dans les groupes comportant d'autres éléments de pompage à déplacement positif, p.ex. rotatifs
A flow sensing valve includes a valve housing having an inlet port, an outlet port, and a plurality of flow sensing ports. A valve member, located within the valve housing, is configured to move between an open position and a closed position. The valve member allows fuel flow between the inlet port and outlet port in the open position, and blocks fuel flow between the inlet port and the outlet port in the closed position. A position sensor, operably coupled to the valve member, is configured to determine a valve position of the flow sensing valve. The valve position is indicative of a valve open port area. A metered flow rate of pressurized fuel through the flow sensing valve in a upstream manifold is proportional to the valve open port area because the flow sensing valve maintains a nearly constant differential pressure across the inlet and outlet ports.
F16K 37/00 - Moyens particuliers portés par ou sur les soupapes ou autres dispositifs d'obturation pour repérer ou enregistrer leur fonctionnement ou pour permettre de donner l'alarme
F02D 41/30 - Commande de l'injection de combustible
F02M 65/00 - Test des appareils d'injection de combustible, p.ex. test du début d'injection
12.
VARIABLE ACTUATION PRESSURE SYSTEM FOR INDEPENDENT PRESSURE CONTROL
A pump arrangement and method of regulating pressure of a pump arrangement are provided. The pump arrangement includes an actuation pump, a pressure regulating valve, and a control valve. The actuation pump has an actuation pump outlet providing an actuation pump discharge flow. The actuation pump discharge flow is piped to opposite sides of a regulator valve member that selectively adjusts an amount of fluid that is bled from the actuation pump outlet such that the actuation pump outlet pressure is used to regulate the actuation pump discharge pressure. The actuation pump discharge flow is separated into first and second portions to provide opposing forces on the regulator valve member. The control valve is operably interposed between the actuation pump outlet and the valve member to selectively adjusts the amount of biasing applied by the second portion of the actuation pump discharge flow on the regulator valve member.
F02C 9/30 - Commande de l'alimentation en combustible caractérisée par un débit variable d'une pompe à combustible
F02C 7/22 - Systèmes d'alimentation en combustible
F02M 37/00 - Appareils ou systèmes pour transférer le combustible liquide des réservoirs de stockage aux carburateurs ou aux injecteurs; Dispositions d'épuration du combustible liquide spécialement conçues pour les moteurs à combustion interne ou aménagées sur ceux-ci
F02M 37/04 - Alimentation au moyen de pompes entraînées
13.
CENTRIFUGAL IMPELLER WITH CONTROLLED FORCE BALANCE
An impeller for a centrifugal pump that includes a disk-shaped shroud having a central axis, a front surface, a rear surface, and a circular perimeter, and a hub at the center of the shroud, the hub having an axial bore. The impeller further includes a first set of vanes on the front surface of the shroud, the first set of vanes extending radially inward from the perimeter towards the hub, a sec-ond set of vanes on the rear surface of the shroud, the second set of vanes extending radially inward from the perimeter towards the hub, a balancing area on the rear surface of the shroud, the balanc-ing area extending radially outward from the hub, and a number of openings in the shroud, the num-ber of openings configured to allow a fluid to pass from one side of the shroud to the other.
B04B 9/14 - Entraînements spécialement conçus pour les centrifugeurs; Agencements des mécanismes de transmission; Suspension ou équilibrage des tambours tournants Équilibrage des tambours rotatifs
FUEL DELIVERY AND CONTROL SYSTEM INCLUDING A POSITIVE DISPLACEMENT ACTUATION PUMP WITH A VARIABLE PRESSURE REGULATOR SUPPLEMENTING A FIXED DISPLACEMENT MAIN FUEL 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 bum flow ranging from above windmill through cruise, a positive displacement actuation pump including a variable pressure regulator, wherein the actuation pump is sized to supply fluid to engine actuators, valves and other hydraulically operated engine components and a pump flow sharing system interconnecting the two pumps. The combined flow from the two pumps is sufficient to meet the engine flow demand for windmill relight and maximum flow conditions. During cruise or normal operating conditions, the pumps operate in completely isolated flow circuits, minimizing recirculation and therefore heat input into the fuel supply system.
F02M 59/20 - Variation du débit du combustible en quantité ou dans le temps
F02M 37/00 - Appareils ou systèmes pour transférer le combustible liquide des réservoirs de stockage aux carburateurs ou aux injecteurs; Dispositions d'épuration du combustible liquide spécialement conçues pour les moteurs à combustion interne ou aménagées sur ceux-ci
F02M 59/24 - Variation du débit du combustible en quantité ou dans le temps avec une course constante des pistons comportant une partie utile variable
F04D 27/00 - Commande, p.ex. régulation, des pompes, des installations ou des systèmes de pompage spécialement adaptés aux fluides compressibles
15.
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 above windmill through cruise and a variable displacement pump sized to supply fluid to engine actuators, valves and other hydraulically operated engine components with a pump flow sharing system interconnecting the two pumps. The combined flow from the two pumps is sufficient to meet the engine flow demand for windmill relight and maximum flow conditions. During cruise or normal operating conditions, the pumps operate in completely isolated flow circuits, minimizing recirculation and therefore heat input into the fuel supply system.
F02M 59/20 - Variation du débit du combustible en quantité ou dans le temps
F02M 37/00 - Appareils ou systèmes pour transférer le combustible liquide des réservoirs de stockage aux carburateurs ou aux injecteurs; Dispositions d'épuration du combustible liquide spécialement conçues pour les moteurs à combustion interne ou aménagées sur ceux-ci
F02M 59/24 - Variation du débit du combustible en quantité ou dans le temps avec une course constante des pistons comportant une partie utile variable
F04D 27/00 - Commande, p.ex. régulation, des pompes, des installations ou des systèmes de pompage spécialement adaptés aux fluides compressibles
A fluid transfer system having improved stress accommodation properties and thermal insulation properties is provided. The fluid transfer system includes a fluid transfer conduit comprising a plurality of concentric tubes configured to divide and distribute an axial stress in-duced in the fluid transfer conduit to each of the tubes and a vacuum cavity between the fluid transfer conduit and a structural support of the fluid transfer system to insulate fluid from a surrounding environment.
Integrally formed, multi zone fuel manifolds for gas turbine engines and methods of construction are provided. The fuel manifold includes a plurality of annular channel members positioned adjacent each other, aligned and coupled together at the in-ner and outer peripheral sides thereof, with each pair of channel members defining a sepa-rate fluid conduit or passage within the mani-fold assembly. The fuel manifold can be con-structed of any number of stacked and secured channel members to provide a compact multi zone fuel manifold having the desired number of fluid conduits or passages with a minimum number of sealed joints.
F02C 7/22 - Systèmes d'alimentation en combustible
F01D 25/00 - "MACHINES" OU MACHINES MOTRICES À DÉPLACEMENT NON POSITIF, p.ex. TURBINES À VAPEUR - Parties constitutives, détails ou accessoires non couverts dans les autres groupes ou d'un intérêt non traité dans ces groupes
F02C 7/00 - Caractéristiques, parties constitutives, détails ou accessoires non couverts dans, ou d'un intérêt plus général que, les groupes ; Entrées d'air pour ensembles fonctionnels de propulsion par réaction
F23R 3/28 - Chambres de combustion à combustion continue utilisant des combustibles liquides ou gazeux caractérisées par l'alimentation en combustible
18.
FLOW COMPENSATED PROPORTIONAL BYPASS VALVE COMBINED WITH A CONTROL VALVE
A common regulator valve is provided for a variable displacement pump fuel metering scheme in which the common regulator valve both controls working output to a pump actuator to control displacement of the variable displacement pump and also to control bypass of excess fuel flow. The regulator valve also includes a differential piston which generates a compensation force off of the bypass flow in order to compensate for changes in spring force and flow reaction force at different system pressures and operational states. As a result, errors in the metered fuel flow can be either eliminated or substantially reduced.
F02M 37/00 - Appareils ou systèmes pour transférer le combustible liquide des réservoirs de stockage aux carburateurs ou aux injecteurs; Dispositions d'épuration du combustible liquide spécialement conçues pour les moteurs à combustion interne ou aménagées sur ceux-ci
F02M 59/44 - Pompes spécialement adaptées à l'injection de combustible non couvertes dans les groupes - Détails, parties constitutives ou accessoires, non couverts dans les groupes ou présentant un intérêt autre que celui visé par ces groupes
F02M 69/00 - Appareils d'injection de combustible à basse pression
A system for metering fuel to an engine. The system includes a fuel metering valve having a throttled inlet and a throttled outlet. The system also provides regulation of redundant pump supplies of fuel to the engine. The throttling of the inlet to the fuel metering valve is provided by a valve that also functions to selectively couple a second fuel pump to the fuel metering valve.
F02M 69/18 - Appareils d'injection de combustible à basse pression caractérisés par des moyens pour doser le combustible s'écoulant continuellement vers les injecteurs ou pour faire varier la pression du combustible en amont des injecteurs les moyens étant des clapets de dosage étranglant les conduits du combustible vers les injecteurs ou des clapets de dérivation étranglant les conduits de trop-plein, les clapets de dosage étant actionnés par un dispositif sensible aux paramètres de f
F02M 69/20 - Appareils d'injection de combustible à basse pression caractérisés par des moyens pour doser le combustible s'écoulant continuellement vers les injecteurs ou pour faire varier la pression du combustible en amont des injecteurs les moyens étant des clapets de dosage étranglant les conduits du combustible vers les injecteurs ou des clapets de dérivation étranglant les conduits de trop-plein, les clapets de dosage étant actionnés par un dispositif sensible aux paramètres de f le dispositif étant un servomoteur, p.ex. utilisant la pression ou la dépression de l'air d'admission
A stepper motor driven actuator that eliminates the need for a position sensor is provided. The stepper motor rotates a cam in a control piston valve. In a single nozzle embodiment, pressure balance is maintained by a spring preload on one end of the piston in one embodiment, and by hydraulic pressure acting on a double diameter end portion of the piston in another embodiment. As the cam is rotated, the change in the gap between the nozzle and the cam changes the pressures on the control piston ends, which forces the piston in the direction that will re-equalize the pressure based on the cam-nozzle gap. As a result, the head or rod of the actuator piston receives high pressure flow, thereby moving the actuator. Movement of the actuator rod provides mechanical feedback to the cam, causing the cam to move back to its mechanical null position.
A low energy stepper motor driven fuel metering valve (FMV) that eliminates the need for a position sensor is provided. The stepper motor rotates a cam that replaces the flapper valve used in conventional systems. The cam rotation increases the gap between the cam and nozzle on one side of the cam. The gap difference affects the pressures on the spool piston ends, which forces the piston in the direction that will return the cam-nozzle gap to a distance that results in a pressure balance to return. As a result, the relatively low energy stepper motor controls the relatively high energy hydromechanical system via the cam-nozzle-orifice system. The cam is precision machined and assures stroke/degree gain accuracy. The hydraulic system assures the piston tracks the cam essentially perfectly except for the effects of piston stiction forces.
F02M 61/16 - Injecteurs de combustible non couverts dans les groupes ou - Détails non couverts dans les groupes ou présentant un intérêt autre que celui visé par ces groupes
F02M 63/00 - ALIMENTATION EN GÉNÉRAL DES MOTEURS À COMBUSTION EN MÉLANGES COMBUSTIBLES OU EN PRODUITS COMPOSANT CES MÉLANGES - Détails, parties constitutives ou accessoires non couverts dans les groupes ou ou présentant un intérêt autre que celui visé par ces groupes
H02P 8/00 - Dispositions pour la commande de moteurs dynamo-électriques tournant pas à pas
22.
APPARATUS FOR ELIMINATION OF TRANSIENT PRESSURE SPIKES ON STIFF FLUID SYSTEMS
An apparatus for reducing pressure spikes in a fuel line having a shut-off valve is provided. The apparatus comprises a body housing a biasing member and a moveable separation member. The body has first, second, and third chambers. The first and second chambers are coupled to upstream and downstream sides of the fuel line, respectively. The third chamber is coupled to a return line. When the shut-off valve is open, the separation member is biased toward the first chamber and separates the first and second chambers. When the shut-off valve is closed, the separation member expands the first chamber and places it and the third chamber in fluid communication once the separation member has gained a significant speed. The expanded first chamber accumulates fuel and the third chamber accumulates and vents the fuel such that transient pressure spikes are reduced and unlikely to damage a turbine system.
F02C 1/00 - Ensembles fonctionnels de turbines à gaz caractérisés par l'utilisation de gaz chauds ou de gaz sous pression non chauffés, comme fluide de travail
F02C 9/00 - Commande des ensembles fonctionnels de turbines à gaz; Commande de l'alimentation en combustible dans les ensembles fonctionnels de propulsion par réaction alimentés en air ambiant
brevets
