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公开(公告)号：US12209538B1
公开(公告)日：2025-01-28
申请号：US18244531
申请日：2023-09-11
Applicant: Hamilton Sundstrand Corporation
Inventor： Ryan Prescott Susca , Ryan Shook , James C. Kopp , Tyler J. Selstad
Abstract: A fuel system includes a main fuel pump sub-system (MFP) with an inlet for receiving a supply of fuel from an inlet line. The MFP has a main outlet line configured to supply fuel to a main fuel throttle valve assembly (MFTV), and a cross-over outlet line. An augmentor fuel pump sub-system (ABFP) has an inlet connected in fluid communication with the cross-over outlet line, and an outlet connected in fluid communication with a main augmentor supply line. A actuation fuel pump sub-system (AFP) has an inlet connected in fluid communication with a branch of the main outlet line, an outlet line with a first outlet line branch configured to connect to supply fuel to the MFTV, and a second outlet line branch configured to connect to supply fuel to an actuation system.
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公开(公告)号：US12044179B2
公开(公告)日：2024-07-23
申请号：US17176372
申请日：2021-02-16
Applicant: IHI Corporation
Inventor： Seiei Masuda
Abstract: A fluid supply system includes: a centrifugal pump; a starting pump that is connected to the centrifugal pump in series, is provided downstream of the centrifugal pump, and has a discharge flow rate less than that of the centrifugal pump; a measuring valve that is provided downstream of the centrifugal pump and the starting pump, measures an amount of fluid discharged from the centrifugal pump or the starting pump, and discharges the fluid to a downstream each time the fluid reaches a predetermined flow amount; a differential pressure valve that is provided downstream of the centrifugal pump and the starting pump, and is driven based on a differential pressure between an upstream pressure and a downstream pressure of the measuring valve; and a flow rate control valve that is provided downstream of the centrifugal pump and upstream of the differential pressure valve and has a valve opening speed that is set slower than that of the differential pressure valve.
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公开(公告)号：US20240183314A1
公开(公告)日：2024-06-06
申请号：US18287745
申请日：2022-04-13
Applicant: SAFRAN HELICOPTER ENGINES
Inventor： Philippe Jean René Marie BENEZECH , Alexis Thomas Valentin LONGIN , Pierre Anthony SICAIRE , Gabriel DARRIEUMERLOU
Abstract: A liquid fuel supply system for an aircraft engine includes a fuel tank, a suction duct connected to the fuel tank and located higher than the fuel tank, an electric pump, a supply pump that is mechanically driven by an accessory gear box and an outlet of the supply pump being connected to a fuel supply circuit of the engine, and an air expulsion drain. The electric pump is in communication with the suction duct independently of the supply pump, the electric pump is in communication with the air expulsion drain, and the supply pump is in communication with the suction duct independently of the electric pump.
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公开(公告)号：US11946420B1
公开(公告)日：2024-04-02
申请号：US18213053
申请日：2023-06-22
Applicant: Hamilton Sundstrand Corporation
Inventor： Edward W. Goy , Ryan Prescott Susca , Ryan Shook
Abstract: A fuel system includes a main pump assembly. The main pump assembly has a main fuel pump connected to an input line, a recirculation pump connected to the input line, and a fuel recirculation system. A recirculation control includes a first selector valve in fluid communication with an outlet line of the recirculation pump, with a recirculation return line connected to return fuel to the input line, and with an inter-valve line. The recirculation control includes a second selector valve in fluid communication with the inter-valve line, with a back-up line connecting the second selector valve to a main fuel control, and with a cooler recirculation line connected to supply the one or more coolers.
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公开(公告)号：US11920536B1
公开(公告)日：2024-03-05
申请号：US17746709
申请日：2022-05-17
Applicant: Gary Schultz , Conrad P. Lindberg , Charles Duffie
Inventor： Gary Schultz , Conrad P. Lindberg , Charles Duffie
CPC classification number: F02D41/222 , F02D41/221 , F02D41/3082 , F02C7/236 , F02C9/30 , F02D2041/223 , F02D2041/226 , F02D2041/228 , F02D2200/0602 , F02D2200/50
Abstract: A fuel pump system for aircraft includes an auxiliary fuel pump in-line with the primary pump, and an electric motor driving the auxiliary fuel pump at an operational motor speed. The system includes an electric control circuit (ECC) and a pressure sensor to regulate the speed of the electric motor based on the output pressure from the sensor to maintain a constant predetermined output pressure. The system may have additional fault mitigation circuitry configured to automatically switch from a processor-controlled to a fixed voltage as a source of power driving the electric motor at either a regulated speed or a constant fixed speed, respectively. The system may include a switch having user-selectable operational modes, including ECC-controlled mode and a high boost mode selectable if the ECC fails. In high boost mode, the ECC is bypassed to drive the electric motor at a fixed safe speed.
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Patent Agency Ranking
公开(公告)号：US11898496B1
公开(公告)日：2024-02-13
申请号：US17870078
申请日：2022-07-21
Applicant: Hamilton Sundstrand Corporation
Inventor： Ryan Prescott Susca , Morgan O'Rorke , Adrian L. Stoicescu
CPC classification number: F02C7/236 , F02C7/232 , F05D2220/323 , F05D2260/607 , F05D2260/84
Abstract: A fuel system of an aircraft engine, having: a boost pump having an input and an output; one or more selector valves; a first component pump having an input fluidly coupled to the output of the boost pump and an output of the first component pump is configured to direct fuel to a first component via the one or more selector valves; and a second component pump having an input that is selectively coupled to either the input or the output of the boost pump by the one or more selector valves, and an output of the second component pump is fluidly coupled to a second component and selectively coupled to the first component by the one or more selector valves.
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公开(公告)号：US11879384B2
公开(公告)日：2024-01-23
申请号：US18107758
申请日：2023-02-09
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Sean Durand
Abstract: Methods and systems of starting a gas turbine engine are provided. During startup, a fuel pressure associated with a primary fuel supply of the gas turbine engine is monitored. A low-pressure event for the primary fuel supply is detected when the fuel pressure falls below a predetermined threshold. Responsive to detecting the low pressure event, an electric backup boost pump is activated by an engine controller to provide fuel to the gas turbine engine.
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公开(公告)号：US11867118B2
公开(公告)日：2024-01-09
申请号：US18174441
申请日：2023-02-24
Applicant: BJ Energy Solutions, LLC
Inventor： Tony Yeung , Ricardo Rodriguez-Ramon , Joseph Foster
IPC: F02C9/40 , E21B43/26 , F02C9/42 , F02C7/236 , F02C7/232 , E21B43/247 , E21B43/16 , E21B4/02 , E21B43/00 , F02C6/00 , F02D19/06 , F02C3/22 , F02D41/22
CPC classification number: F02C9/40 , E21B4/02 , E21B43/00 , E21B43/16 , E21B43/247 , E21B43/26 , E21B43/2607 , F02C3/22 , F02C6/00 , F02C7/232 , F02C7/236 , F02C9/42 , F02D19/0642 , F02D2041/224 , F02D2200/0602 , F05D2270/3015 , F05D2270/31 , F23N2241/20
Abstract: Methods and systems for supply of fuel for a turbine-driven fracturing pump system used in hydraulic fracturing may be configured to identify when the supply pressure of primary fuel to a plurality of gas turbine engines of a plurality of hydraulic fracturing units falls below a set point, identify a gas turbine engine of the fleet of hydraulic fracturing units operating on primary fuel with highest amount of secondary fuel available, and to selectively transfer the gas turbine engine operating on primary fuel with the highest amount of secondary fuel from primary fuel operation to secondary fuel operation. Some methods and systems may be configured to transfer all gas turbine engines to secondary fuel operation and individually and/or sequentially restore operation to primary fuel operation and/or to manage primary fuel operation and/or secondary fuel operation for portions of the plurality of gas turbine engines.
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公开(公告)号：US11781483B1
公开(公告)日：2023-10-10
申请号：US17735440
申请日：2022-05-03
Applicant: Hamilton Sundstrand Corporation
Inventor： Leo J. Veilleux, Jr.
CPC classification number: F02C7/232 , F02C7/228 , F02C7/236 , F02C9/263 , F05D2220/323
Abstract: A valve having a first segment between a first outer wall and a first inner wall and has a first outer port near the first outer wall and a side port between the first inner and outer walls; a second segment between a second outer wall and a second inner wall and has a second outer port near the second outer wall; a center segment between the first and second inner walls, and a center port; and a piston within the valve, having: a first piston head in the first segment that slides to block and unblock the side port; a second piston head in the second segment that slides between the second inner and outer walls, the second piston head having a surface area that is the same as the first piston head; and a shaft connecting the first and second piston heads.
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公开(公告)号：US11774097B2
公开(公告)日：2023-10-03
申请号：US17825381
申请日：2022-05-26
Applicant: Delavan Inc.
Inventor： Steve J. Myers
CPC classification number: F23R3/14 , F02C7/222 , F02C7/2365 , F23R3/283 , F23R3/286
Abstract: An air cap is configured to be affixed to a nozzle assembly as a downstream facing component of the nozzle assembly. The air cap includes a plurality of air wipe passages with outlets defined in a circumferential direction around a downstream facing surface of the air cap. A nozzle assembly can include an outer wall wherein the air cap is connected to the nozzle assembly outboard of the outer wall. An inner wall can be connected to the outer wall by a plurality of air swirl vanes. One or more fuel circuit components can be connected to the nozzle assembly inboard of the inner wall.
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