Patents by Inventor James Alexander McEwen
James Alexander McEwen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11598251Abstract: A turbine comprising: a turbine housing, a wastegate passage connecting the turbine inlet and the turbine outlet; and a wastegate valve comprising a movable valve member. The wastegate valve has an open state in which a first gas may pass between a turbine inlet a turbine outlet via the wastegate passage and a closed state in which the valve member substantially prevents said first gas from passing between the turbine inlet and the turbine outlet. The valve member is mounted to an actuation member that passes through a bore of the turbine housing. The actuation member is movable to move the wastegate valve between the open and closed states. The turbine comprises a fluid conduit configured to deliver a second gas to the bore to form a fluidic seal between the bore and the actuation member to substantially prevent the passage of said first gas along the bore.Type: GrantFiled: October 11, 2019Date of Patent: March 7, 2023Assignee: CUMMINS LTDInventors: Ivan Kaiser, James Alexander McEwen
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Publication number: 20220186842Abstract: 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.Type: ApplicationFiled: February 21, 2020Publication date: June 16, 2022Inventors: 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
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Publication number: 20210355863Abstract: A turbine comprising: a turbine housing, a wastegate passage connecting the turbine inlet and the turbine outlet; and a wastegate valve comprising a movable valve member. The wastegate valve has an open state in which a first gas may pass between a turbine inlet a turbine outlet via the wastegate passage and a closed state in which the valve member substantially prevents said first gas from passing between the turbine inlet and the turbine outlet. The valve member is mounted to an actuation member that passes through a bore of the turbine housing. The actuation member is movable to move the wastegate valve between the open and closed states. The turbine comprises a fluid conduit configured to deliver a second gas to the bore to form a fluidic seal between the bore and the actuation member to substantially prevent the passage of said first gas along the bore.Type: ApplicationFiled: October 11, 2019Publication date: November 18, 2021Inventors: Ivan Kaiser, James Alexander McEwen
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Patent number: 11022031Abstract: The turbine arrangement includes a turbine including a turbine housing which defines a turbine cavity within which a turbine wheel is supported, an inlet upstream of the wheel and an outlet downstream. The arrangement also includes a flow passage configured to permit gas flow without interacting with the wheel, and a valve member moveable between an open configuration wherein gas may flow through the flow passage, and a closed configuration wherein gas is substantially prevented from flowing, a first actuator portion for moving the valve member between the configurations, and a second actuator portion in gas flow communication with a portion of the arrangement upstream of the wheel via an actuator gas passage. The arrangement is configured such that gas may flow through the actuator gas passage to the second actuator portion, where it acts on the second actuator portion to urge the valve member towards the closed configuration.Type: GrantFiled: March 17, 2017Date of Patent: June 1, 2021Assignee: Cummins Ltd.Inventors: James Alexander Mcewen, Thomas Morton
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Publication number: 20200340393Abstract: The turbine arrangement includes a turbine including a turbine housing which defines a turbine cavity within which a turbine wheel is supported, an inlet upstream of the wheel and an outlet downstream. The arrangement also includes a flow passage configured to permit gas flow without interacting with the wheel, and a valve member moveable between an open configuration wherein gas may flow through the flow passage, and a closed configuration wherein gas is substantially prevented from flowing, a first actuator portion for moving the valve member between the configurations, and a second actuator portion in gas flow communication with a portion of the arrangement upstream of the wheel via an actuator gas passage. The arrangement is configured such that gas may flow through the actuator gas passage to the second actuator portion, where it acts on the second actuator portion to urge the valve member towards the closed configuration.Type: ApplicationFiled: March 17, 2017Publication date: October 29, 2020Applicant: CUMMINS LTDInventors: James Alexander Mcewen, Thomas Morton
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Patent number: 10612458Abstract: A variable geometry turbine comprising a turbine wheel mounted for rotation about a turbine axis within a housing. The housing defines an annular inlet surrounding the turbine wheel and defined between first and second inlet sidewalls. The turbine further comprises a cylindrical sleeve that is axially movable across the annular inlet to vary the size of a gas flow path through the inlet. The annular inlet is divided into at least two axially offset inlet passages. The inner diameter of the sleeve is greater than the inner diameter of the inlet passages.Type: GrantFiled: May 9, 2018Date of Patent: April 7, 2020Assignee: CUMMINS LTD.Inventors: John F. Parker, Robert L. Holroyd, Tom J. Roberts, James Alexander McEwen, Tim Denholm, Simon Moore, Michael Voong, Christopher Normington, Arun Vijayakumar, Stephen Garrett
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Patent number: 10167774Abstract: A variable geometry turbine comprising a turbine wheel mounted for rotation about a turbine axis within a housing. The housing defines an annular inlet surrounding the turbine wheel and defined between first and second inlet sidewalls. The turbine further comprises a cylindrical sleeve that is axially movable across the annular inlet to vary the size of a gas flow path through the inlet. The annular inlet is divided into at least two axially offset inlet passages. The inner diameter of the sleeve is greater than the inner diameter of the inlet passages.Type: GrantFiled: November 12, 2015Date of Patent: January 1, 2019Assignee: Cummins Ltd.Inventors: John F. Parker, Robert L. Holroyd, Tom J. Roberts, James Alexander McEwen, Tim Denholm, Simon Moore, Michael Voong, Christopher Normington, Arun Vijayakumar, Stephen Garrett
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Publication number: 20180291802Abstract: A variable geometry turbine comprising a turbine wheel mounted for rotation about a turbine axis within a housing. The housing defines an annular inlet surrounding the turbine wheel and defined between first and second inlet sidewalls. The turbine further comprises a cylindrical sleeve that is axially movable across the annular inlet to vary the size of a gas flow path through the inlet. The annular inlet is divided into at least two axially offset inlet passages. The inner diameter of the sleeve is greater than the inner diameter of the inlet passages.Type: ApplicationFiled: May 9, 2018Publication date: October 11, 2018Inventors: John F. Parker, Robert L. Holroyd, Tom J. Roberts, James Alexander McEwen, Tim Denholm, Simon Moore, Michael Voong, Christopher Normington, Arun Vijayakumar, Stephen Garrett
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Patent number: 10041398Abstract: A turbine comprises a turbine housing defining a turbine inlet upstream of a turbine wheel and a turbine outlet downstream of the turbine wheel; a wastegate passage connecting the turbine inlet and the turbine outlet; and a wastegate valve comprising a movable valve member. The wastegate valve has an open state and a closed state. The valve member is mounted to an actuation member passing through an actuator conduit of the turbine housing, and movable so as to move the wastegate valve between the open and closed states. The turbine further comprises a sealing arrangement configured to provide a seal arranged to substantially prevent gas from passing from the turbine outlet into the actuator conduit. The sealing arrangement is configured such that when the valve member is urged into the closed state by the actuator member the sealing effectiveness of the sealing arrangement is increased.Type: GrantFiled: July 10, 2014Date of Patent: August 7, 2018Assignee: Cummins Ltd.Inventor: James Alexander McEwen
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Patent number: 9752537Abstract: A unique engine system has an engine with a dedicated exhaust gas recirculation cylinder, an EGR system that receives exhaust gas from the dedicated cylinder, and a turbocharger having turbine inlet ports in fluid communication with other engine cylinders via a plurality of exhaust passages. At least two of the exhaust passages are substantially isolated from each other. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for engines and engine systems.Type: GrantFiled: May 20, 2015Date of Patent: September 5, 2017Assignee: Cummins Inc.Inventors: Adrian P. Dale, Michael D. Dolton, Samuel C. Geckler, James Alexander McEwen, Nicholas Kenneth Sharp, Stephen Edward Garrett, Anthony Kyle Perfetto
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Publication number: 20160061103Abstract: A variable geometry turbine comprising a turbine wheel mounted for rotation about a turbine axis within a housing. The housing defines an annular inlet surrounding the turbine wheel and defined between first and second inlet sidewalls. The turbine further comprises a cylindrical sleeve that is axially movable across the annular inlet to vary the size of a gas flow path through the inlet. The annular inlet is divided into at least two axially offset inlet passages. The inner diameter of the sleeve is greater than the inner diameter of the inlet passages.Type: ApplicationFiled: November 12, 2015Publication date: March 3, 2016Inventors: John F. Parker, Robert L. Holroyd, Tom J. Roberts, James Alexander McEwen, Tim Denholm, Simon Moore, Michael Voong, Christopher Normington, Arun Vijayakumar, Stephen Garrett
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Patent number: 9234456Abstract: A variable geometry turbine comprising a turbine wheel mounted for rotation about a turbine axis within a housing. The housing defines an annular inlet surrounding the turbine wheel and defined between first and second inlet sidewalls. The turbine further comprises a cylindrical sleeve that is axially movable across the annular inlet to vary the size of a gas flow path through the inlet. The annular inlet is divided into at least two axially offset inlet passages. The inner diameter of the sleeve is greater than the inner diameter of the inlet passages.Type: GrantFiled: December 3, 2012Date of Patent: January 12, 2016Assignee: Cummins Ltd.Inventors: John F. Parker, Robert L. Holroyd, Tom J. Roberts, James Alexander McEwen, Tim Denholm, Simon Moore, Michael Voong, Christopher Normington, Arun Vijayakumar, Stephen Garrett
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Publication number: 20150345433Abstract: A unique engine system has an engine with a dedicated exhaust gas recirculation cylinder, an EGR system that receives exhaust gas from the dedicated cylinder, and a turbocharger having turbine inlet ports in fluid communication with other engine cylinders via a plurality of exhaust passages. At least two of the exhaust passages are substantially isolated from each other. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for engines and engine systems.Type: ApplicationFiled: May 20, 2015Publication date: December 3, 2015Inventors: Adrian P. Dale, Michael D. Dolton, Samuel C. Geckler, James Alexander McEwen, Nicholas Kenneth Sharp, Stephen Edward Garrett, Anthony Kyle Perfetto
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Patent number: 9163524Abstract: According to an aspect of the invention, there is provided a variable geometry turbine comprising: a turbine wheel mounted for rotation about a turbine axis within a housing, the housing defining an annular inlet surrounding the turbine wheel and defined between first and second inlet sidewalls; and a cylindrical sleeve axially movable across the annular inlet to vary the size of a gas flow path through the annular inlet, the annular inlet being divided into at least two axially offset inlet portions; and a ring-like seal adjacent a free end of the sleeve, at least a part of the ring-like seal being located in-between the sleeve and the inlet portions, or a structure defining the inlet portions.Type: GrantFiled: April 2, 2012Date of Patent: October 20, 2015Assignee: Cummins Ltd.Inventors: Simon Moore, James Alexander McEwen, Ian Higgins, Matthew William Edwards
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Patent number: 8961151Abstract: A turbocharger shaft interconnects the compressor impeller and the turbine wheel and a bearing housing between the compressor and turbine houses a bearing assembly supporting the turbocharger shaft rotation. A shaft bore defined in at least one of the compressor, turbine or bearing housings receiving the shaft. A sealing arrangement for restricting leakage of lubricant along the shaft bore from the bearing housing to the compressor or turbine housing. The sealing arrangement comprises at least one sealing ring around the shaft in the shaft bore and a gas passage communicating with the shaft bore. A gas distribution circuit includes a valve movable between a first position in which gas passage is in communication with a gas supply path for supplying gas to the shaft bore and a second position in which the gas passage is in communication with a vent path for venting gas from the shaft bore.Type: GrantFiled: April 2, 2012Date of Patent: February 24, 2015Assignee: Cummins Ltd.Inventors: Fahim Ismail Patel, James Alexander McEwen
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Publication number: 20150016963Abstract: A turbine comprises a turbine housing defining a turbine inlet upstream of a turbine wheel and a turbine outlet downstream of the turbine wheel; a wastegate passage connecting the turbine inlet and the turbine outlet; and a wastegate valve comprising a movable valve member. The wastegate valve has an open state and a closed state. The valve member is mounted to an actuation member passing through an actuator conduit of the turbine housing, and movable so as to move the wastegate valve between the open and closed states. The turbine further comprises a sealing arrangement configured to provide a seal arranged to substantially prevent gas from passing from the turbine outlet into the actuator conduit. The sealing arrangement is configured such that when the valve member is urged into the closed state by the actuator member the sealing effectiveness of the sealing arrangement is increased.Type: ApplicationFiled: July 10, 2014Publication date: January 15, 2015Inventor: James Alexander McEwen
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Patent number: 8721268Abstract: A variable geometry turbine comprises a turbine wheel mounted for rotation about a turbine axis within a housing, the housing defining an annular inlet surrounding the turbine wheel and defined between first and second inlet sidewalls; and a cylindrical sleeve axially movable across the annular inlet to vary the size of a gas flow path through the inlet; wherein the annular inlet is divided into at least three axially offset annular inlet portions by two or more axially spaced annular baffles disposed between the first and second inlet sidewalls; inlet vanes extending axially into at least one of the inlet portions and defining circumferentially adjacent inlet passages; and wherein each of at least two of said baffles extends radially inboard of inlet vanes which extend into at least one of the inlet portions axially adjacent the respective baffle, and wherein a distance between an inner diameter of a first baffle of said at least two of said baffles and a trailing edge of a radially innermost vane in one ofType: GrantFiled: October 6, 2010Date of Patent: May 13, 2014Assignee: Cummins Ltd.Inventors: Simon Moore, Tom J. Roberts, Robert L. Holroyd, James Alexander McEwen
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Publication number: 20140105730Abstract: According to a first aspect of the present invention there is provided a variable geometry turbine comprising: a turbine wheel mounted for rotation about a turbine axis within a housing, the housing defining an annular inlet surrounding the turbine wheel and defined between first and second inlet sidewalls, the annular inlet being divided into at least two axially offset inlet portions; a cylindrical sleeve axially movable across the annular inlet to vary the size of a gas flow path through the inlet; and a guide for guiding the movement of the cylindrical sleeve, the guide being at least partially located within the inlet at a radially extent of the inlet portions, and extending in an axial direction parallel to the turbine axis.Type: ApplicationFiled: December 16, 2013Publication date: April 17, 2014Applicant: Cummins Turbo Technologies LimitedInventors: Tim Denholm, James Alexander McEwen, Tom J. Roberts, Robert L. Holroyd, Christopher Nomington, Arun Vijayakumar, Stephen Edward Garrett
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Patent number: 8696308Abstract: According to a first aspect of the present invention there is provided a variable geometry turbine comprising: a turbine wheel mounted for rotation about a turbine axis within a housing, the housing defining an annular inlet surrounding the turbine wheel and defined between first and second inlet sidewalls, the annular inlet being divided into at least two axially offset inlet portions; a cylindrical sleeve axially movable across the annular inlet to vary the size of a gas flow path through the inlet; and a guide for guiding the movement of the cylindrical sleeve, the guide being at least partially located within the inlet at a radially extent of the inlet portions, and extending in an axial direction parallel to the turbine axis.Type: GrantFiled: October 6, 2010Date of Patent: April 15, 2014Assignee: Cummins Ltd.Inventors: Tim Denholm, James Alexander McEwen, Tom J. Roberts, Robert L. Holroyd, Christopher Normington, Arun Vijayakumar, Stephen Edward Garrett
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Patent number: 8696299Abstract: A compressor comprises an impeller wheel mounted within a housing defining an inlet and an outlet. The wheel has a plurality of vanes and is rotatable about an axis. The housing has an inner wall defining a surface located in close proximity to radially outer edges of the impeller vanes which sweep across said surface as the impeller wheel rotates about its axis. The inlet comprises inner and outer tubular walls extending away from the impeller wheel in an upstream direction and defining between them gas flow passage. A bleed passage between the gas flow passage and the impeller wheel is selectively opened and closed by movement of a sliding sleeve in a helical direction.Type: GrantFiled: May 7, 2010Date of Patent: April 15, 2014Assignee: Cummins Turbo Technologies LimitedInventors: John Michael Bywater, James Alexander McEwen