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公开(公告)号：US12071899B2
公开(公告)日：2024-08-27
申请号：US18197499
申请日：2023-05-15
Applicant: Hamilton Sundstrand Corporation
Inventor： Todd Haugsjaahabink , Ryan Shook
CPC classification number: F02C7/236 , F02C7/232 , F02C9/28 , F05D2270/301
Abstract: A pump system for a gas turbine engine including a first pump connected to a fluid flow demand line for delivering fluid to a fluid flow demand and a second pump connected, in parallel to the first pump, to the fluid flow demand line and supplementing fluid to the actuation or burner system based on the fluid flow demand. A pressure regulating valve (PRV) is fluidly connected to the flow demand line for bypassing flow to a pump inlet pressure of the first pump and second pump, and controlling a modulated pressure flow signal to a bypass valve, wherein the bypass valve is in fluid communication with the second pump and the PRV for receiving modulated pressure from the PRV and regulating delivery of fluid from the second pump to a bypass flow line.
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公开(公告)号：US12031487B1
公开(公告)日：2024-07-09
申请号：US18214250
申请日：2023-06-26
Applicant: Hamilton Sundstrand Corporation
Inventor： Ryan Prescott Susca , Ryan Shook
CPC classification number: F02C7/232 , F02C7/236 , F02C9/30 , F05D2260/84
Abstract: A fuel system can include a main fuel pump (MFP) configured to output main flow to a main line, an augmentor fuel pump (AFP) configured to output an augmenter flow to an augmenter line, and a variable displacement pump assembly (VDPP) in fluid communication with the AFP via the augmentor line to receive the augmentor flow. The VDPP can include a variable displacement pump (VDP) configured to output a VDP flow to a VDP output line. The system can include a main fuel throttle valve assembly (MFTV) in fluid communication with the main fuel pump via the main line to receive the main flow and in fluid communication with the VDPP via a backup line. The MFTV can be in fluid communication with an engine line, an actuation assembly in fluid communication with the VDPP via an actuation line to receive an actuation flow.
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公开(公告)号：US20240191752A1
公开(公告)日：2024-06-13
申请号：US18077837
申请日：2022-12-08
Applicant: Hamilton Sundstrand Corporation
Inventor： Mark W. Shoemaker , Ryan Shook
CPC classification number: F16C33/121 , F04C2/18 , F04C2240/54 , F04C2240/56 , F16C2360/00
Abstract: A journal bearing for a gear driven pump includes a bearing body having a bearing body circular opening that defines a bearing surface along a length of the bearing body and a face plate adjacent to the bearing surface. The bearing surface is configured to carry a gear shaft load through a hydrodynamic fluid film pressure between a load surface of a gear shaft and the bearing surface. The bearing surface is formed from a leaded bronze material and the face plate is formed from a copper-nickel alloy.
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公开(公告)号：US11994117B2
公开(公告)日：2024-05-28
申请号：US17493390
申请日：2021-10-04
Applicant: Hamilton Sundstrand Corporation
Inventor： Ryan Susca , Morgan O'Rorke , Ryan Shook , Matej Rutar
CPC classification number: F04B1/34 , F04B49/002 , F04B49/12
Abstract: A variable positive displacement pump actuator system for a variable positive displacement pump can include a supply line configured to provide a supply pressure, a main pump line configured to provide a pump pressure greater than the supply pressure from the variable positive displacement pump, and at least one electro-hydraulic servo valve (EHSV) in fluid communication with the supply line and the main pump line to receive the supply pressure and the pump pressure. The at least one electro-hydraulic servo valve can be configured to output a first regulated pressure and a second regulated pressure. The system can include a first control line in fluid communication with at least one of the at least one EHSV to receive the first controlled pressure, a second control line in fluid communication with at least one of the at least one EHSV to receive the second controlled pressure, a first hydraulic actuator configured to connect to and/or otherwise actuate a lever arm of the variable positive displacement pump, the first hydraulic actuator in fluid communication with the first control line and the supply line to receive the first control pressure and the supply pressure to control a position of the first hydraulic actuator, and a second hydraulic actuator configured to connect to and/or otherwise actuate the lever arm of the variable positive displacement pump, the second hydraulic actuator in fluid communication with the second control line and the supply line to receive the second control pressure and the supply pressure to control a position of the second hydraulic actuator.
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公开(公告)号：US20180051696A1
公开(公告)日：2018-02-22
申请号：US15238619
申请日：2016-08-16
Applicant: Hamilton Sundstrand Corporation
Inventor： Ryan Shook , Weishun Ni , Joseph Wetch
CPC classification number: F04C15/0026 , F04C2/18 , F04C15/06 , F04C2240/56
Abstract: A bearing structure for abutting a pair of gears of a gear pump includes a body including a face on which the gears rotate, an inlet defined in the body, and an outlet defined in the body. The bearing structure includes a sealing portion of the face configured to fluidly seal the inlet from the outlet, the sealing portion being defined as a portion of the face in sealing engagement with the gears at a rotational position of the gears wherein a volume contained by teeth of the gears and the face is constant or about constant as the gears rotate.
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Patent Agency Ranking
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：US20240392776A1
公开(公告)日：2024-11-28
申请号：US18202661
申请日：2023-05-26
Applicant: Hamilton Sundstrand Corporation
Inventor： Ryan Shook , Ryan Prescott Susca , Todd Haugsjaahabink
Abstract: A fluid pump system can include a controllable pump configured to generate a pump flow through the controllable pump and to output an output flow to an output line. The fluid pump system can include a flow split system configured to be in fluid communication with the controllable pump in a bypass state such that the flow split system is configured to divert a portion of the pump flow to maintain a desired output flow to the output line but to also allow the controllable pump to maintain a minimum pump flow through the controllable pump to maintain pump temperature below a high temperature threshold.
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公开(公告)号：US20240392775A1
公开(公告)日：2024-11-28
申请号：US18202477
申请日：2023-05-26
Applicant: Hamilton Sundstrand Corporation
Inventor： Ryan Prescott Susca , Ryan Shook
Abstract: A system includes a variable displacement pump (VDP) in fluid communication with an inlet line and with an outlet line. The VDP includes a variable displacement mechanism configured to vary pressure to the outlet line. A bypass valve (BPV) includes a BPV inlet in fluid communication with the outlet line, and a BPV outlet in fluid communication with a bypass line that feeds into the inlet line upstream of the VDP. The BPV includes a thermostatic actuator configured to control recirculation flow amount through the BPV based on fluid temperature in the BPV. A method includes thermostatically controlling a bypass valve (BPV) to recirculate flow from the outlet line to an input line of the VDP in the event of flow demanded by the downstream system dropping below a predetermined low threshold of flow through the VDP based on fluid temperature in the BPV.
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公开(公告)号：US20240392773A1
公开(公告)日：2024-11-28
申请号：US18202513
申请日：2023-05-26
Applicant: Hamilton Sundstrand Corporation
Inventor： Ryan Prescott Susca , Ryan Shook
Abstract: A system includes a variable displacement pump (VDP) in fluid communication with an inlet line and with an outlet line. The VDP includes a variable displacement mechanism configured to vary pressure to the outlet line. A relief valve (RV) includes an RV inlet in fluid communication with the outlet line, and an RV outlet in fluid communication with a bypass line that feeds into the inlet line upstream of the VDP. An actuator is operatively connected to control the RV to change function of the RV between a first function and a second function. The first function is a high pressure relief valve function. The second function is as a wind milling bypass function. A controller is operatively connected to the actuator to control the RV to change back and forth between the first function and the second function.
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公开(公告)号：US20240392772A1
公开(公告)日：2024-11-28
申请号：US18202404
申请日：2023-05-26
Applicant: Hamilton Sundstrand Corporation
Inventor： Ryan Shook , Ryan Prescott Susca
Abstract: A system includes a variable displacement pump (VDP) in fluid communication with an inlet line and with an outlet line. The VDP includes a variable displacement mechanism configured to vary pressure to the outlet line. The VDP includes a variable stop configured to vary minimum displacement of the variable displacement mechanism based on position of the variable stop relative to a housing of the VDP. A pressure sensing valve (PSV) is operatively connected between the inlet line and the outlet line to actuate a stop member to adjust stopping position of the variable stop based on pressure differential between the inlet line and the outlet line.
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