公开(公告)号：US20230366356A1

公开(公告)日：2023-11-16

申请号：US18227648

申请日：2023-07-28

Applicant: ROLLS-ROYCE PLC

Inventor： Craig W. BEMMENT

IPC: F02C7/36 ,  F01L15/12 ,  F01D15/12 ,  F02C3/113

CPC classification number: F02C7/36 ,  F01L15/12 ,  F01D15/12 ,  F02C3/113

Abstract: The present disclosure relates to a geared gas turbine engine for an aircraft. Example embodiments include a gas turbine engine for an aircraft including: an engine core having a turbine, a compressor, and a core shaft connecting the turbine to the compressor; a fan located upstream of the engine core, the fan having a plurality of fan blades; and a gearbox that receives an input from the core shaft to drive the fan at a lower rotational speed than the core shaft, the gearbox having a gear ratio of around 3.4 or higher, wherein the gas turbine engine is configured such that a jet velocity ratio between a first jet velocity exiting from a bypass duct of the engine and a second jet velocity exiting from an exhaust nozzle of the engine core is within a range from around 0.75 to around 0.82.

公开(公告)号：US1824224A

公开(公告)日：1931-09-22

申请号：US45539730

申请日：1930-05-24

Applicant: MILLER WILLIAM J

Inventor： MILLER WILLIAM J

IPC: F01L15/12

CPC classification number: F01L15/12

公开(公告)号：US20130008538A1

公开(公告)日：2013-01-10

申请号：US13636763

申请日：2011-03-18

Applicant: Thomas Schütze

Inventor： Thomas Schütze

IPC: F16K11/00

CPC classification number: F04B43/026 ,  F01L15/12 ,  F04B43/073 ,  F16K11/0655 ,  Y10T137/86493

Abstract: The invention relates to a valve for alternately filling two working chambers (A, B) of a piston-cylinder system (1, 2, 3) of a pump with a fluid, wherein the valve has two valve pump outlets (PA, PB), for connection to the working chambers (A, B) of the pump and has a valve control element (64) that is displaceably arranged in a space of a valve housing (60, 61, 76, 77) and can be movably driven backwards and forwards between two end positions by a fluid, wherein the valve control element (64) has control ducts (67, 82, 83, 84) that co-operate with housing ducts (51, 71, 72, 80, 81) arranged in the valve housing (60) wherein the first valve pump outlet (PA) is connected to the housing ducts (71, 80) and the second valve pump outlet (PB) is connected to the housing ducts (72, 81), wherein in a central region between the two end positions the valve pump outlets (PA, PB) are connected to one another via control ducts (82, 83, 84) of the valve control element (64).

Abstract translation: 本发明涉及一种用于交替地填充具有流体的泵的活塞 - 气缸系统（1,2,3）的两个工作室（A，B）的阀，其中所述阀具有两个阀泵出口（PA，PB） ，用于连接到所述泵的所述工作室（A，B）并且具有可移动地布置在阀壳体（60,61,76,77）的空间中的阀控制元件（64），并且可以向后移动地驱动 并且通过流体在两个端部位置之间前进，其中所述阀门控制元件（64）具有控制管道（67,82,83,84），所述控制管道（67,82,83,84）与布置在其中的壳体管道（51,71,72,80,81） 其中第一阀泵出口（PA）连接到壳体管道（71,80）和第二阀泵出口（PB）的阀壳体（60）连接到壳体管道（72,81），其中在 两端之间的中心区域通过阀控制元件（64）的控制管道（82,83,84）将阀泵出口（PA，PB）彼此连接。

公开(公告)号：US06505538B1

公开(公告)日：2003-01-14

申请号：US09396350

申请日：1999-09-14

Applicant: Barry Johnston

Inventor： Barry Johnston

IPC: F01L1512

CPC classification number: F01B17/02 ,  F01B1/062 ,  F01L15/12 ,  F01L21/04 ,  F01L2101/00 ,  F01L2105/00 ,  F02B2075/1812

Abstract: An improved uniflow engine has a plurality of vertically extending cylinders distributed in-line along a horizontally extending common crankshaft connected to pistons reciprocating in the cylinders. A working fluid vapor is supplied to those cylinders in which the respective pistons are in their working strokes to initiate rotation of the crankshaft in a predetermined direction regardless of where the crankshaft has stopped last. Once rotation is initiated and a predetermined mode change speed attained in a “start-up mode” engine operation, vapor inlet valves are controlled by an inlet valve control mechanism to change engine operation over to a “running mode”. In the start-up mode, incoming vapor is admitted over a substantial portion of the piston working stroke, whereas in the “running mode” vapor inflow is terminated relatively early in the working stroke so that a vapor change does work in expanding against the piston. A mode switch valve including a check valve and a control piston controls a closing rate of each of the vapor inlet valves. A wedge fixed to a head portion of each piston cooperates with a wedge fixed to each vapor inlet valve to close the vapor inlet valve at a predetermined position of the piston.

Abstract translation: 改进的单流发动机具有多个垂直延伸的气缸，其沿着水平延伸的公共曲轴成直线分布，该曲轴连接到在气缸中往复运动的活塞。 工作流体蒸汽被供应到各个活塞在其工作冲程中的那些气缸，以启动曲轴在预定方向上的旋转，而不管最后曲轴停止的位置。 一旦启动旋转并且在“启动模式”发动机操作中达到预定的模式改变速度，则通过进气阀控制机构控制蒸汽进气阀，以将发动机运转改变为“行驶模式”。 在启动模式下，进入的蒸汽在活塞工作行程的很大部分被允许，而在“运行模式”中，蒸气流入在工作冲程中比较早地终止，使得蒸汽变化在活塞上膨胀 。 包括止回阀和控制活塞的模式切换阀控制每个蒸气入口阀的关闭速度。 固定到每个活塞的头部的楔子与固定到每个蒸汽入口阀的楔合作，以在活塞的预定位置处关闭蒸气入口阀。

公开(公告)号：US3147669A

公开(公告)日：1964-09-08

申请号：US29932863

申请日：1963-08-01

Applicant: LUNDQUIST WILTON G

Inventor： LUNDQUIST WILTON G

IPC: F01B1/01 ,  F01B17/04 ,  F01L15/12 ,  F02B75/18 ,  F02B75/22 ,  F03C1/053

CPC classification number: F01L15/12 ,  F01B1/01 ,  F01B17/04 ,  F02B75/222 ,  F02B2075/1832 ,  F03C1/0531 ,  F03C1/0536

公开(公告)号：US4458579A

公开(公告)日：1984-07-10

申请号：US319964

申请日：1981-11-10

Applicant: James W. Rasmussen

Inventor： James W. Rasmussen

IPC: F01L15/12 ,  F03C1/007 ,  F03C1/013 ,  F01L21/04

CPC classification number: F03C1/0135 ,  F01L15/12 ,  F03C1/0076

Abstract: A hydraulically driven reciprocating motor (10) includes a hydraulic cylinder (12) and a piston (60) mounted for reciprocation within the cylinder. The piston has passageways (74) formed therethrough which are normally sealed by a floating valve (90). Rods (76) are carried by the piston (60) and normally project from one end thereof. When the piston (60) reaches the limit of its travel in one direction the rods (76) disengage the floating valve (90), thereby opening the passageways (74) through the piston (60) to permit movement of the piston (60) in the opposite direction. When the piston (60) reaches the limit of its travel in the opposite direction, the floating valve (90) again seals the passageways (74) through the piston (60) to complete the operating cycle of the motor (10).

Abstract translation: 液压驱动的往复运动马达（10）包括液压缸（12）和活塞（60），该活塞安装用于在气缸内往复运动。 活塞具有通过其形成的通道（74），其通常由浮阀（90）密封。 杆（76）由活塞（60）承载，并且通常从其一端突出。 当活塞（60）达到其在一个方向上行进的极限时，杆（76）脱离浮动阀（90），从而通过活塞（60）打开通道（74）以允许活塞（60）的运动， 在相反的方向。 当活塞（60）达到相反方向行进的极限时，浮动阀（90）再次通过活塞（60）密封通道（74），以完成电动机（10）的操作循环。

公开(公告)号：US4214854A

公开(公告)日：1980-07-29

申请号：US941222

申请日：1978-09-11

Applicant: George K. Roeder

Inventor： George K. Roeder

IPC: F01L15/12 ,  F01L23/00 ,  F04B47/08 ,  F04B17/00 ,  F01B7/18 ,  F04B35/00

CPC classification number: F01L15/12 ,  F01L23/00 ,  F04B47/08

Abstract: A downhole, hydraulically actuated pump assembly, having an engine reciprocatingly connected to a production pump. Power fluid is conducted downhole to the engine of the pump assembly, while production fluid and spent power fluid is conducted uphole to the surface of the ground.The pump assembly includes a housing within which spaced, axially aligned, cylindrical chambers reciprocatingly receive spaced engine and pump pistons which are connected together in a manner to enable the engine to reciprocate the production pump.A mechanically actuated valve assembly is contained within the engine piston and is arranged respective to various different flow passageways so that flow of power fluid through the engine forces the engine piston to reciprocate.The valve assembly includes a control rod and a valve element concentrically arranged respective to one another and to the engine piston. The valve element is reciprocated respective to the engine piston in response to reciprocation of the control rod. Abutment means formed on the engine cylinder shifts the control rod each stroke of the piston, thereby causing the valve element to shift respective to the piston, whereupon various different flow passageways are aligned with one another to cause power fluid to be effected upon the engine in such a manner that the engine piston reciprocates to thereby force the pump piston to be reciprocated within its cylinder.

Abstract translation: 井下的液压致动泵组件，具有往复连接到生产泵的发动机。 动力流体在井下传导到泵组件的发动机，同时将生产流体和废动力流体向井底传导到地面。 泵组件包括壳体，在其中间隔开的轴向对准的圆柱形腔室往复地接收间隔开的发动机和泵活塞，这些活塞以能够使发动机使生产泵往复运动的方式连接在一起。 机械致动的阀组件被容纳在发动机活塞内并且被布置成相应于各种不同的流动通道，使得通过发动机的动力流体的流动迫使发动机活塞往复运动。 阀组件包括彼此相对并且相对于发动机活塞同心布置的控制杆和阀元件。 阀元件响应于控制杆的往复运动而相应于发动机活塞。 形成在发动机气缸上的基台装置将控制杆的每一行程移动到活塞的每个行程，从而使阀元件相应地移动到活塞上，于是各种不同的流动通道彼此对准，以使发动机上的动力流体受到影响 使得发动机活塞往复运动从而迫使泵活塞在其气缸内往复运动。

公开(公告)号：US2472284A

公开(公告)日：1949-06-07

申请号：US65332146

申请日：1946-03-02

Applicant: MERRITT CLARK JOHN

Inventor： MERRITT CLARK JOHN

IPC: F01L15/12

CPC classification number: F01L15/12

公开(公告)号：US06499384B1

公开(公告)日：2002-12-31

申请号：US09722674

申请日：2000-11-28

Applicant: Jim S. Blair

Inventor： Jim S. Blair

IPC: F01L1512

CPC classification number: F01L23/00 ,  F01L15/12 ,  F04B9/1073 ,  F04B53/127

Abstract: A reciprocating fluid driven apparatus has a hollow elongate barrel with an inlet and an outlet in fluid communication with portions of a pipeline, a piston reciprocating within the barrel and having a through hole for fluid communication between spaces above and below the piston, and a cyclically operable closure member for opening and closing the through hole allowing upward and downward piston movements, the piston having piston rods extending from an upper end and a lower end of the piston to an exterior of the barrel so that a pressure at opposite sides of said piston is balanced to allow operation at unlimited pressures.

Abstract translation: 往复式流体驱动设备具有中空细长筒体，其具有与管道的一部分流体连通的入口和出口，在筒体内往复运动的活塞，并具有用于在活塞上方和下方的空间之间流体连通的通孔， 可操作的关闭构件，用于打开和关闭允许向上和向下活塞运动的通孔，活塞具有从活塞的上端和下端延伸到筒的外部的活塞杆，使得在所述活塞的相对侧的压力 是平衡的，允许无限压力的操作。

公开(公告)号：US5275085A

公开(公告)日：1994-01-04

申请号：US921903

申请日：1992-07-29

Applicant: Young B. Hur

Inventor： Young B. Hur

IPC: F15B11/06 ,  F01B7/00 ,  F01L11/04 ,  F01L15/12 ,  F15B11/036 ,  F01B1/00

CPC classification number: F01L11/04 ,  F01B7/00 ,  F01L15/12 ,  F15B11/0365

Abstract: A device for controlling a pneumatic cylinder device, being of a double cylinder construction comprising an outer cylinder and an inner cylinder sealably fitted in the outer cylinder to slide along the outer cylinder. In the inner cylinder, a piston with a valve at one side thereof or valves at both sides thereof is slidably disposed. To control the valve or valves, an adjusting rod is provided which is slidably and rotatably disposed in the piston and its piston rod and adjusted by an operating lever. Alternatively, the double cylinder construction comprises a pair of cylinders disposed axially in parallel to each other. In the cylinders, pistons are disposed, one of which has a valve at one side thereof or valves at both sides thereof. The cylinders are communicated with each other by a communication construction having a communication adjusting groove and an adjusting lever for adjusting the communication area of communication adjusting groove. In either case, controls of operation load, operation speed and braking are easily achieved during the compressing and stretching operations without requiring a separate device, by controlling the valve or valves and/or the communication adjusting groove.

Abstract translation: 一种用于控制气缸装置的装置，其是双缸结构，包括外筒和密封地装配在外筒中的内筒，以沿着外筒滑动。 在内筒中，可滑动地设置在其一侧具有阀的活塞或其两侧的阀。 为了控制阀或阀，设置有可滑动和可旋转地设置在活塞及其活塞杆中并由操作杆调节的调节杆。 或者，双缸结构包括彼此平行轴向设置的一对气缸。 在气缸中，设置活塞，其中一个活塞在其一侧具有阀或在其两侧具有阀。 气缸通过具有连通调节槽的通信结构和用于调节通信调节槽的通信区域的调节杆彼此连通。 在任一种情况下，通过控制阀或阀和/或连通调节槽，在压缩和拉伸操作期间容易地实现操作负载，操作速度和制动的控制，而不需要单独的装置。