公开(公告)号：US10138816B2

公开(公告)日：2018-11-27

申请号：US14858614

申请日：2015-09-18

Applicant: ROLLS-ROYCE, PLC

Inventor： Martin Yates ,  Mihir Desai

IPC: F02C7/236 ,  F04B49/035 ,  F04B23/14 ,  F04B17/05 ,  F04D15/00 ,  F04D1/10 ,  F04B23/12 ,  F04B41/06 ,  F04D13/12 ,  F04D9/04 ,  F04C2/10 ,  F04C2/344 ,  F04C11/00

Abstract: A fuel pumping unit has a low pressure centrifugal pump and a high pressure centrifugal pump. In use, the low pressure pump supplies fuel at a boosted pressure to the high pressure pump for onward supply to a fuel metering unit. The pumping unit further has a drive input which drives the low and high pressure pumps. A gear arrangement is operatively located between the drive input and the low and high pressure pumps such that the low and high pressure pumps are driven at different speeds by the drive input.

公开(公告)号：US10330145B2

公开(公告)日：2019-06-25

申请号：US15618790

申请日：2017-06-09

Applicant: ROLLS-ROYCE plc

Inventor： Martin Yates

IPC: F16C17/04 ,  F02M63/00 ,  F16C37/00 ,  F16C33/12 ,  F02C7/22 ,  F04C2/14 ,  F02M37/04 ,  F01C21/02 ,  F04C2/18

Abstract: Invention provides gear pump bearing block and method of manufacturing gear pump bearing block. Bearing block includes a bush formed of antifriction alloy, bush having cylindrical portion providing bore adapted to receive bearing shaft of gear of pump, and further having flange portion extending radially outwardly at end of cylindrical portion to provide thrust face adapted to slidingly engage with side surface of gear. Bearing block also has backing layer covering radially outer surface of cylindrical portion and rear face of flange portion, backing layer being formed of less dense alloy compared to antifriction alloy. Furthermore, there is an annular gallery embedded in flange portion such that gallery is spaced from surface of bore and from thrust face, gallery surrounding bore, with inlet to and outlet from annular gallery such that, in use, fluid flows from inlet, through annular gallery to provide cooling of thrust face, and then to outlet.

公开(公告)号：US10677207B2

公开(公告)日：2020-06-09

申请号：US15468526

申请日：2017-03-24

Applicant: ROLLS-ROYCE plc

Inventor： Luke Ashton ,  Martin Yates ,  David Brookes

IPC: F02M59/10 ,  F04B1/2007 ,  F04B1/20 ,  F02C7/22 ,  F04B1/2078 ,  F04B15/00 ,  F04B17/03 ,  F04B53/14 ,  F04B53/16 ,  F04B53/08

Abstract: An axial piston pump has a fluid inlet, a fluid outlet, and a rotatable, one-piece piston housing carrying one or more pistons movable within one or more respective sleeves formed by the housing. A circumferential row of fixed field members is mounted to the housing at a mounting location formed by the housing, the mounting location being radially outward of the sleeve(s). The pump further has a stator surrounding the piston housing and including a circumferential row of armature windings such that the piston housing and the stator form an electro-magnetic motor operable to rotate the piston housing, and a swashplate engaged with the piston(s) such that rotation of the piston housing relative to the swashplate around an axis of rotation produces reciprocating movement of the piston(s) for the pressurisation of fluid received into the sleeve(s) from the fluid inlet and then discharged from the sleeve(s) to the fluid outlet.

公开(公告)号：US10450889B2

公开(公告)日：2019-10-22

申请号：US15485496

申请日：2017-04-12

Applicant: ROLLS-ROYCE PLC

Inventor： Martin Yates

IPC: F01D17/16 ,  F02C6/08 ,  F02C7/236 ,  F04D27/00 ,  F04D29/56 ,  F04D31/00 ,  F01D17/26

Abstract: A system for controlling the geometry of a variable geometry compressor. The system having: a mechanical linkage operable to vary the compressor geometry; a first fluid-powered actuator arranged to operate the linkage and configured to be powered by a pressurized supply of an incompressible fluid; and a second fluid-powered actuator arranged to operate the linkage and configured to be powered by a pressurized supply of a compressible fluid. Wherein the first and second actuators are further arranged to operate in combination on the mechanical linkage such that a first actuator force exerted by the first actuator on the mechanical linkage sums with a second actuator force exerted by the second actuator on the mechanical linkage.

公开(公告)号：US10294985B2

公开(公告)日：2019-05-21

申请号：US15618664

申请日：2017-06-09

Applicant: ROLLS-ROYCE plc

Inventor： Martin Yates

IPC: F16C17/10 ,  F16C17/04 ,  F02C7/22 ,  F04C2/14 ,  F02C7/00 ,  F16C33/12 ,  F16C17/22 ,  F01C21/02 ,  F04C2/18

Abstract: The invention provides a gear pump bearing block and method of manufacturing gear pump bearing block. Bearing block includes bush formed of antifriction alloy, having a cylindrical portion providing bore adapted to receive bearing shaft of a gear of pump, and further having a flange portion extending radially outwardly at end of cylindrical portion to provide thrust face adapted to slidingly engage with side surface of gear. Bearing block also has backing layer covering radially outer surface of cylindrical portion and rear face of flange portion, backing layer being formed of relatively less dense alloy compared to antifriction alloy. Furthermore, there is an annular formation of one or more stiffening members, formation surrounding bore, the, or each, stiffening member being embedded in flange portion, and the, or each, stiffening member being formed of material having higher elastic modulus than antifriction alloy.