公开(公告)号：WO2022023569A1

公开(公告)日：2022-02-03

申请号：PCT/EP2021/071496

申请日：2021-07-30

Applicant: CUMMINS LTD

Inventor： BROOKES, Matthew ,  HUGHES, Stephen David ,  HOLDEN, Mark R.

IPC: F01D25/24 ,  F01D17/16

Abstract: There is provided an assembly for a turbocharger, the assembly comprising a turbine housing (7) and a nozzle ring (1), wherein one of the turbine housing (7) and the nozzle ring (1) comprises a tongue (6) and the other of the turbine housing (7) and the nozzle ring (1) comprises a corresponding slot (4), the tongue (6) and slot (4) being configured to engage and prevent relative rotation of the turbine housing (7) and the nozzle ring (1). Also provided is a method of manufacturing a turbine housing, assembly for use in a turbocharger, or a turbocharger.

公开(公告)号：WO2021171043A1

公开(公告)日：2021-09-02

申请号：PCT/GB2021/050506

申请日：2021-02-26

Applicant: CUMMINS LTD

Inventor： HUGHES, Stephen David

IPC: F01D17/14 ,  F01D17/16 ,  F01D5/14

Abstract: Variable geometry turbines having new configurations of vanes are disclosed. New methods for designing new configurations of vanes for geometry turbines having are also disclosed.

公开(公告)号：WO2022263823A1

公开(公告)日：2022-12-22

申请号：PCT/GB2022/051510

申请日：2022-06-15

Applicant: CUMMINS LTD

Inventor： HUGHES, Stephen David ,  SANDFORD, George E. ,  SHAW, Christopher J.

IPC: F01D17/14 ,  F01D17/16

Abstract: A turbine for a turbo-machine is proposed in which, at a gas inlet, vanes, extend from a nozzle ring though slots in a shroud. The nozzle ring has a radially-inner corner which is a gentler curve than in a conventional system, and this is found to lead to improved efficiency of the turbine.

公开(公告)号：WO2019102200A1

公开(公告)日：2019-05-31

申请号：PCT/GB2018/053381

申请日：2018-11-22

Applicant: CUMMINS LTD

Inventor： HUGHES, Stephen David

IPC: F02B37/02

CPC classification number: F02B37/025 ,  F05D2220/40

Abstract: A turbine comprises a turbine wheel for rotation within a turbine housing, the turbine housing including at least one volute arranged to deliver a fluid to the turbine wheel via the turbine nozzle. A method for determining a width of a turbine nozzle for the turbine, comprises selecting from a relationship between a turbine stage efficiency and an effective nozzle area, at least one target effective nozzle area. As used here, the effective nozzle area is dependent on both the width of the turbine nozzle and a whirl angle induced by the at least one volute. The method further comprises determining,in dependence on the whirl angle, the width of the turbine nozzle as a width that will achieve the at least one target effective nozzle area.

公开(公告)号：WO2018091871A1

公开(公告)日：2018-05-24

申请号：PCT/GB2017/053413

申请日：2017-11-13

Applicant: CUMMINS LTD

Inventor： MOORE, Simon David ,  EDWARDS, Matthew William ,  HUGHES, Stephen David ,  SANDFORD, George E. ,  MADHUSUDAN, Nandakishore Arcot

IPC: F01D9/04 ,  F01D17/16

Abstract: A turbine for a turbo-machine is proposed in which, at a gas inlet, vanes, extending from a nozzle ring though slots in a shroud, are shaped on one side to as to substantially conform to the profile of the surface of the slot, whereby a close connection can be formed between the vane and the slot to inhibit leakage of gas between the vane and the slot surface.

公开(公告)号：WO2019220112A1

公开(公告)日：2019-11-21

申请号：PCT/GB2019/051333

申请日：2019-05-15

Applicant: CUMMINS LTD

Inventor： EDWARDS, Matthew William ,  MOORE, Simon David ,  PARRY, Christopher ,  SULLIVAN, Andrew ,  GHOSH, Paul ,  HOLDEN, Mark R. ,  SANDFORD, George E. ,  MADHUSUDAN, Nandakishore Arcot ,  HUGHES, Stephen David ,  CONLON, Karl

IPC: F01D17/16 ,  F01D17/14

Abstract: A turbine for a turbo-machine is proposed in which, at a gas inlet for a turbine wheel, vanes (407) extend from a nozzle ring (405) though slots in a shroud (6). The nozzle ring (405) and shroud (6) are relatively rotatable about a rotational axis of the turbine by at least 0.1 degrees. In use, the nozzle ring (405) and shroud are relatively rotated to bring one side of the vane (407) into close contact with one surface of the slot, to inhibit leakage of gas between the vane and the slot surface. For this purpose the respective surfaces of the nozzle and slot can be configured to closely conform to each other. If there is differential thermal expansion of the shroud and nozzle ring (405), the nozzle ring (405) and shroud can relatively rotate, to withdraw the vane (407) from the edge of the slot to relieve the pressure between them.

公开(公告)号：WO2019102205A1

公开(公告)日：2019-05-31

申请号：PCT/GB2018/053388

申请日：2018-11-23

Applicant: CUMMINS LTD

Inventor： HUGHES, Stephen David

IPC: F01D9/02 ,  F02B37/02

CPC classification number: F01D9/026 ,  F02B37/025 ,  F05D2220/40

Abstract: A turbine comprises a housing defining a turbine chamber (52) within which a turbine wheel (14) is supported for rotation about a first axis. The housing further defines first and second inlet volutes (19a, 19b) which each spiral radially inwards and extend from a respective inlet to adjoin the turbine chamber. The housing further defines a volute tongue (54a) for each of the first and second inlet volutes (19a, 19b), the tongue (54a) of the first inlet volute radially separating a downstream portion of the first inlet volute adjacent the turbine chamber from an upstream portion of the first inlet volute adjacent said inlet of the first inlet volute, and the tongue of the second inlet volute radially separating a downstream portion of the second inlet volute adjacent the turbine chamber from an upstream portion of the second inlet volute adjacent said inlet of the second inlet volute. The tongues (54a) of each of the first and second inlet volutes have a turbine scroll tongue overlap which is substantially zero or positive; and the tongue of the first inlet volute is angularly spaced about the first axis from the tongue of the second inlet volute.

公开(公告)号：WO2019102190A1

公开(公告)日：2019-05-31

申请号：PCT/GB2018/053365

申请日：2018-11-21

Applicant: CUMMINS LTD

Inventor： HASLER, Craig S. T. ,  SEEBURRUN, Vishal ,  HUGHES, Stephen David ,  ARCHER, Jamie

IPC: F02B37/02 ,  F02D41/26 ,  F02D41/00

CPC classification number: F02B37/025 ,  F02D41/0007 ,  F02D41/26 ,  F05D2220/40

Abstract: A turbine with multiple gas inlets is designed by a process of, for a given engine, obtaining time series data characterizing the power bias of the engine, obtaining an isentropic power associated with each data point of the time series, and using the isentropic powers to obtain a design point. The turbine is then designed based on the design point, such as by optimising one or more design parameters of the turbine based on the design point.