公开(公告)号：US20220186842A1

公开(公告)日：2022-06-16

申请号：US17432169

申请日：2020-02-21

申请人： Cummins Ltd

发明人： Robin Daniels ,  James Alexander McEwen ,  Levinia Mathews ,  Christopher Parry ,  Thomas Roberts ,  George E. Sandford ,  Stephen Caddy ,  Thomas Hulson ,  Dave Lee ,  Martin Selway ,  Kevin Franks ,  Lisa Jane Hill ,  Henry David Lambton Carr ,  Jonathan Wilson ,  Lee Curtis ,  Fahim Ismail Patel ,  Matthew Whittlesea ,  Matthew J. Purdey ,  Donald E. Willey

IPC分类号： F16K5/04 ,  F16J15/44

摘要： There is provided a seal assembly comprising: a first component and a second component spaced apart from the first component so as to define a passage for the transfer of fluid from an inlet of the seal assembly to an outlet of the seal assembly, wherein the first component comprises a concavity at least partially defining the passage, and wherein no part of the second component extends into the portion of the passage bounded by the concavity.

公开(公告)号：US20220065133A1

公开(公告)日：2022-03-03

申请号：US17418045

申请日：2019-12-23

申请人： Cummins Ltd

发明人： Matthew Purdey

IPC分类号： F01D25/18 ,  F01D11/00

摘要： A seal system for a bearing chamber (22) of a turbomachine includes the baffle element (70) encircling the axis (25) of the machine. The baffle element is formed with front surface including both a recess (73) which defines a circumferentially-extending oil-receiving channel (74), and an oil-deflecting surface (78) on a gutter (77). The channel decreases in cross-sectional area close to the oil-deflecting surface, and a circular line which is within the channel distant from the gutter, intersects with the oil-deflection surface. This forces the oil to change direction at the gutter, and urges the oil radially outward. Thus, a high rotational velocity of the body of oil may be maintained, whilst improving the drainage efficiency of the seal system at the gutter.

公开(公告)号：USD931338S1

公开(公告)日：2021-09-21

申请号：US29715980

申请日：2019-12-05

申请人： Cummins Ltd

设计人： Iain M. Taylor ,  Sagar A. Hore ,  Mark R. Holden

公开(公告)号：US11125235B2

公开(公告)日：2021-09-21

申请号：US16314170

申请日：2017-06-29

申请人： Cummins Ltd.

发明人： Subenuka Sivagnanasundaram

IPC分类号： F04D17/10 ,  F04D29/44

摘要： A diffuser is proposed which is formed as the gap between rotationally-symmetric surfaces which face each other. Moving in the radial direction, the axial extent of the gap generally decreases to a minimum value in a throat portion of the diffuser, and then generally increases again. The distance from the rotational axis of the compressor to the throat may be approximately at least 125% of the radius of the compressor wheel. The inventors have found that a throat at this distance from the rotational axis may lead to higher efficiency at high flow rates, especially for relatively low turbo speeds. This is because the spacing between the compressor wheel and the throat permits diffusion of the gas streams leaving the compressor wheel.

公开(公告)号：USD930707S1

公开(公告)日：2021-09-14

申请号：US29715978

申请日：2019-12-05

申请人： Cummins Ltd

设计人： Tain M. Taylor ,  Sagar A. Hore ,  Mark R. Holden

公开(公告)号：US11078962B2

公开(公告)日：2021-08-03

申请号：US14757704

申请日：2015-12-23

申请人： Cummins Ltd

发明人： Philip Wild ,  Richard Goodyear ,  Christopher Normington

IPC分类号： F01D25/16 ,  F16C33/66 ,  F01D25/18 ,  F16C19/08 ,  F16C35/04 ,  F16C19/18

摘要： A bearing assembly support comprises a body, the body defining: a thrust surface; an aperture extending through the body; and at least one passageway along which a lubricant can flow away from the thrust surface during use. The thrust surface is suitable for contacting an end of a bearing assembly. The aperture is suitable for receipt of a shaft when supported by the bearing assembly. Each passageway may be defined by a recess on the thrust surface or a cut away section that extends through the body from the thrust surface to an opposite surface of the body. The body may be a housing for receipt of a bearing assembly or an end cap for a housing.

公开(公告)号：US20210054779A1

公开(公告)日：2021-02-25

申请号：US16955622

申请日：2018-12-18

申请人： CUMMINS LTD

发明人： Matthew J. PURDEY

IPC分类号： F02B37/18 ,  F02C6/12

摘要： A turbine comprises a turbine housing defining a turbine inlet upstream of a turbine wheel and a turbine outlet down-stream of the turbine wheel; and a wastegate valve assembly comprising at least one movable valve member mounted on a movable support member within a wastegate chamber which communicates with the turbine inlet upstream of the turbine, and has one or more chamber outlets which communicate with an outlet of the turbine. The valve member is permitted to articulate slightly about the support member, with the amount of articulation in respective directions being limited by collisions between a respective limit point on a limit area on a rear surface of a sealing portion of the valve member and a respective limit point on limit area on a front surface of the support member.

公开(公告)号：US10655498B2

公开(公告)日：2020-05-19

申请号：US15680841

申请日：2017-08-18

申请人： Cummins Ltd.

发明人： James Donaldson ,  Prabhu Ramasamy ,  Paul Brierley

IPC分类号： F01D25/16 ,  F02C6/12 ,  F01D25/18

摘要： A turbomachine with a shaft supporting a turbine wheel is supported for rotation in a housing. The shaft extends through a bore in the housing and a bearing assembly is disposed in the bore. The turbomachine has a first lubricating fluid slinger comprising a screw thread that is engageable with a threaded section of the shaft such that the first lubricating fluid slinger is screwable along the threaded section of the shaft so as to apply a compressive preload to the bearing assembly.

公开(公告)号：US10605111B2

公开(公告)日：2020-03-31

申请号：US15520400

申请日：2015-07-27

申请人： CUMMINS LTD

发明人： John Bywater

IPC分类号： F01D15/10 ,  H02K7/08 ,  H02K7/18 ,  F16C33/66 ,  F01D25/16 ,  H02K9/19 ,  F16C19/18

摘要： A turbine generator comprises an elongate member, a support structure, a turbine wheel and an electrical generator. The support structure comprises a shaft and support the elongate member for rotation about a rotation axis. The turbine wheel is attached to the elongate member. The electrical generator comprises a rotor and a stator, the rotor being attached to the elongate member and the stator being arranged around the elongate member. The elongate member is provided with a bore and the shaft extends through an end of the elongate member into the bore so as to support it for rotation about the rotation axis.

公开(公告)号：US10570922B2

公开(公告)日：2020-02-25

申请号：US15638650

申请日：2017-06-30

申请人： Cummins Ltd

发明人： Pierre Bernard French

IPC分类号： F04D29/44 ,  F04D29/62 ,  F04D25/02 ,  F02B37/00 ,  F04D29/28

摘要： A compressor comprises a compressor housing, a compressor wheel mounted within the housing and having compressor blades, and a bearing housing. The compressor housing comprises a cover member and a diffuser member that is connected to both the cover member and the bearing housing. The diffuser member has a radially outer portion connected to the cover member and a radially inner portion connected to the bearing housing. The diffuser member has a first weakened region defined at a first position intermediate the radially outer portion and the radially inner portion, and a first strengthened region defined at a second position intermediate the radially outer portion and the radially inner portion, said second position being radially inwards or outwards of the first weakened region.