Patents by Inventor Thanh-Hung Nguyen-Schaefer
Thanh-Hung Nguyen-Schaefer 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: 9835054Abstract: An exhaust gas turbocharger may include a shaft mounted in a bearing housing carrying a compressor wheel and a turbine wheel. The shaft may include a sealing bush arranged on the shaft in a rotationally fixed manner. The sealing bush together with a bearing housing cover may at least partially delimit an annular oil centrifuging space arranged coaxially to the sealing bush. The bearing housing cover may include a guiding nib located radially outside the sealing bush partially covering the sealing bush in axial direction. The guiding nib may be configured to guide oil separated in the oil centrifuging space onto the rotating sealing bush. The rotating sealing bush may be configured to direct the oil into the oil centrifuging space in response to centrifugal force creating an oil swirl.Type: GrantFiled: February 20, 2014Date of Patent: December 5, 2017Assignee: Bosch Mahle Turbo Systems GmBH & Co. KGInventors: Friedemann Weber, Thomas Berger, Thanh-Hung Nguyen-Schaefer, Christoph Butscher, Jasmin Hausser, Andreas Fath
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Patent number: 9716282Abstract: The present invention relates to a fuel cell assembly having a fuel cell and an actuating element, which is activated by a control unit, for bringing residual gas out of a fuel flow of the fuel cell. The invention is provided with the control unit having an open-loop and/or closed-loop control system which takes into consideration the fuel concentration in the fuel flow.Type: GrantFiled: March 20, 2007Date of Patent: July 25, 2017Assignee: Robert Bosch GmbHInventors: Ian Faye, Thanh-Hung Nguyen-Schaefer, Ulrich Gottwick
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Patent number: 9464637Abstract: A rolling bearing assembly for a rotor of a turbine includes a bearing housing and a bearing cartridge. The bearing cartridge may include an outer shell and an inner shell arranged concentrically thereto. The outer and inner shell may be rotatably mounted on one another about a concentric axis of rotation in two bearing sections axially spaced from one another via rolling bodies. The inner shell may be arranged on a rotor shaft and in the region of the bearing sections includes an inner press fit region. The outer shell may be arranged in the bearing housing and have axially spaced from the bearing sections at least one outer press fit region. In the respective bearing sections an oil damping ring channel may be radially formed between the bearing housing and the outer shell. The oil damping ring channel may extend coaxially to the axis of rotation.Type: GrantFiled: August 2, 2012Date of Patent: October 11, 2016Assignee: BOSCH MAHLE TURBO SYSTEMS GMBH & CO. KGInventor: Thanh-Hung Nguyen-Schaefer
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Patent number: 9279453Abstract: A radial bearing may include a bearing body, which includes a receiving space for a shaft to be arranged therein. The bearing body may have an inner wall facing the receiving space, in which transverse grooves running in an axial direction and separated from one another in a circumferential direction by separating portions are formed. The radial bearing may include a supply channel penetrating the bearing body provided in at least one separating portion. The at least one separating portion may have at least one oil pocket spaced from the associated supply channel.Type: GrantFiled: April 10, 2013Date of Patent: March 8, 2016Assignee: Bosch Mahle Turbo Systems GmBH & Co. KGInventors: Jochen Laubender, Thanh-Hung Nguyen-Schaefer
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Publication number: 20150233382Abstract: A rolling bearing assembly for a rotor of a turbine includes a bearing housing and a bearing cartridge. The bearing cartridge may include an outer shell and an inner shell arranged concentrically thereto. The outer and inner shell may be rotatably mounted on one another about a concentric axis of rotation in two bearing sections axially spaced from one another via rolling bodies. The inner shell may be arranged on a rotor shaft and in the region of the bearing sections includes an inner press fit region. The outer shell may be arranged in the bearing housing and have axially spaced from the bearing sections at least one outer press fit region. In the respective bearing sections an oil damping ring channel may be radially formed between the bearing housing and the outer shell. The oil damping ring channel may extend coaxially to the axis of rotation.Type: ApplicationFiled: August 2, 2012Publication date: August 20, 2015Inventor: Thanh-Hung Nguyen-Schaefer
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Publication number: 20150078690Abstract: A radial bearing may include a bearing body, which includes a receiving space for a shaft to be arranged therein. The bearing body may have an inner wall facing the receiving space, in which transverse grooves running in an axial direction and separated from one another in a circumferential direction by separating portions are formed. The radial bearing may include a supply channel penetrating the bearing body provided in at least one separating portion. The at least one separating portion may have at least one oil pocket spaced from the associated supply channel.Type: ApplicationFiled: April 10, 2013Publication date: March 19, 2015Inventors: Jochen Laubender, Thanh-Hung Nguyen-Schaefer
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Patent number: 8894285Abstract: A charging device may include a shaft rotatably mounted on at least one slide bearing in a shaft bearing region. At least one flow opening for introducing and discharging a fluid may be defined on the shaft bearing region, wherein the shaft in the shaft bearing region may have two outer portions each running in a circumferential direction and axially binding an inner portion. At least one of the outer portions on its surface may include at least one microstructure.Type: GrantFiled: November 30, 2012Date of Patent: November 25, 2014Assignee: Bosch Mahle Turbo Systems GmbH & Co. KGInventors: Thanh-Hung Nguyen-Schaefer, Heinz Bernd Haiser, Martin Knopf
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Publication number: 20140234075Abstract: An exhaust gas turbocharger may include a shaft mounted in a bearing housing carrying a compressor wheel and a turbine wheel. The shaft may include a sealing bush arranged on the shaft in a rotationally fixed manner. The sealing bush together with a bearing housing cover may at least partially delimit an annular oil centrifuging space arranged coaxially to the sealing bush. The bearing housing cover may include a guiding nib located radially outside the sealing bush partially covering the sealing bush in axial direction. The guiding nib may be configured to guide oil separated in the oil centrifuging space onto the rotating sealing bush. The rotating sealing bush may be configured to direct the oil into the oil centrifuging space in response to centrifugal force creating an oil swirl.Type: ApplicationFiled: February 20, 2014Publication date: August 21, 2014Applicant: Bosch Mahle Turbo Systems GmbH & Co. KGInventors: Friedemann Weber, Thomas Berger, Thanh-Hung Nguyen-Schaefer, Christoph Butscher, Jasmin Hausser, Andreas Fath
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Patent number: 8491271Abstract: In an exhaust-gas turbocharger with a shaft axially arranged between a compressor wheel and a turbine wheel and connected in a rotationally fixed manner to the compressor wheel as well as to the turbine wheel, said shaft being rotationally mounted with a turbine-side shaft part in a turbine-side bearing, a connecting region with minimal heat conductivity is axially arranged or configured between the turbine-side shaft part and the turbine wheel in such a manner that the heat flow emanating from the turbine wheel is choked.Type: GrantFiled: August 14, 2009Date of Patent: July 23, 2013Assignee: Bosch Mahle Turbo Systems GmbH Co. KGInventors: Joerg Jennes, Thanh-Hung Nguyen-Schaefer, Stefan Muenz
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Publication number: 20130129506Abstract: An exhaust-gas turbocharger may include a rotor shaft arranged with at least one bearing-shaft portion in a radial bearing. The radial bearing may be a plain bearing configured to slide on a fluid film. The at least one bearing-shaft portion may be subdivided into two outer segments by an inner segment. The two outer segments may be arranged on the respective axial end region of the radial bearing and the inner segment may be positioned between the outer segments. The inner segment may be arranged in the area of an opening of a fluid channel. The turbocharger may include at least one transverse groove running inclined relative to the circumferential direction of the rotor shaft arranged in at least in one of the outer segments. The at least one transverse groove may include a groove depth having a continuously decreasing development in a fluid flow direction.Type: ApplicationFiled: May 25, 2011Publication date: May 23, 2013Applicant: Bosch Mahle Turbo Systems GmbH & Co. KGInventor: Thanh-Hung Nguyen-Schaefer
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Patent number: 8124286Abstract: The invention relates to a fuel cell installation comprising a fuel cell unit (6). Said installation is also provided with a dosing unit (8) which comprises at least one dosing valve (7) and is used to dose a fuel (10) for at least one anode (12) of the fuel cell unit (6), and a starting valve for dosing the fuel (10) for at least one cathode (19) of the fuel cell unit (6) during a starting phase. The aim of the invention is to be able to produce and operate one such fuel cell installation in an economical manner. To this end, at least one throttle element (18) comprising a fixed internal cross-sectional area is used to fix the maximum quantity of fuel that can be dosed in the starting phase.Type: GrantFiled: November 17, 2006Date of Patent: February 28, 2012Assignees: Robert Bosch GmbH, GM Global Technology Operations, Inc.Inventors: Thanh-Hung Nguyen-Schaefer, Frank Brenner, Guenther Bantleon, Jens-Uwe Sparschuh, Thomas Hebner
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Publication number: 20100050633Abstract: In an exhaust-gas turbocharger with a shaft axially arranged between a compressor wheel and a turbine wheel and connected in a rotationally fixed manner to the compressor wheel as well as to the turbine wheel, said shaft being rotationally mounted with a turbine-side shaft part in a turbine-side bearing, a connecting region with minimal heat conductivity is axially arranged or configured between the turbine-side shaft part and the turbine wheel in such a manner that the heat flow emanating from the turbine wheel is choked.Type: ApplicationFiled: August 14, 2009Publication date: March 4, 2010Inventors: Joerg Jennes, Thanh-Hung Nguyen-Schaefer, Stefan Muenz
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Publication number: 20090305100Abstract: The present invention relates to a fuel cell assembly having a fuel cell and an actuating element, which is activated by a control unit, for bringing residual gas out of a fuel flow of the fuel cell. The invention is provided with the control unit having an open-loop and/or closed-loop control system which takes into consideration the fuel concentration in the fuel flow.Type: ApplicationFiled: March 20, 2007Publication date: December 10, 2009Inventors: Ian Faye, Thanh-Hung Nguyen-Schaefer, Ulrich Gottwick
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Publication number: 20080289610Abstract: A pulse supercharger for internal combustion engines, in which the pulse supercharger is situated in a charge air duct. The flow cross-section of the charge air duct for a charge air flow is opened or closed via the pulse supercharger. The pulse supercharger includes two synchronously operatable rotary slide elements.Type: ApplicationFiled: May 3, 2005Publication date: November 27, 2008Applicant: ROBERT BOSCH GMBHInventors: Thanh-Hung Nguyen-Schaefer, Johannes Meiwes, Michael Baeuerle, Udo Sieber, Ralph Engelberg
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Patent number: 7214438Abstract: The fuel cell apparatus has a fuel cell (1), a pressurized fuel tank (2) for supplying fuel at a supply pressure and a pressure-reducing unit (4) for reducing the supply pressure to an operating pressure of the fuel cell. In order to improve the overall efficiency of the unit in comparison to the art the pressure-reducing unit (4) is constructed as a cooling apparatus for cooling at least one cooling element, preferably a condenser (5).Type: GrantFiled: July 29, 2003Date of Patent: May 8, 2007Assignee: Robert Bosch GmbHInventors: Ian Faye, Thanh-Hung Nguyen-Schaefer, Rainer Saliger, Jan-Michael Graehn
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Patent number: 7143782Abstract: A pressure regulator module for controlling a gas is provided, which includes a chamber, at least one gas inlet, and at least one gas outlet. In addition, a proportional valve operating essentially according to the pressure-equalization principle is post-connected to the gas inlet and is pre-connected to the chamber, and the proportional valve acts together with a pressure sensor situated in the chamber.Type: GrantFiled: October 5, 2004Date of Patent: December 5, 2006Assignee: Robert Bosch GmbHInventors: Guenther Bantleon, Thanh-Hung Nguyen-Schaefer
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Publication number: 20060231785Abstract: A valve for controlling a fluid, in particular for controlling a gas, is described, encompassing a valve housing an actuation unit for an at least locally tubular valve armature which is guided axially displaceably and is equipped with a valve closure member by which a fluid flow between an inflow side and an outlet side is controllable and which coacts with a valve seat. The valve armature comprises a guidance collar in a region remote from the valve closure member, and is equipped with a second guidance in a region offset with respect to the guidance collar.Type: ApplicationFiled: December 9, 2003Publication date: October 19, 2006Inventors: Waldemar Hans, Ian Faye, Frank Brenner, Frank Miller, Martin Maier, Guenther Bantleon, Thanh-Hung Nguyen-Schaefer, Thomas Hebner, Kai Kroeger
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Patent number: 7111822Abstract: A valve for controlling a fluid, in particular for controlling a gas. The valve includes a valve housing which accommodates an electromagnetic actuating unit for a solenoid armature which is guided axially displaceably in the valve housing and which cooperates with a valve seat via a valve-closing member, so that a fluid stream from an inflow side to an outflow side of the valve is controllable. At least one lubricant chamber adjacent to the guide gap between the valve housing and the solenoid armature is provided.Type: GrantFiled: September 20, 2004Date of Patent: September 26, 2006Assignee: Robert Bosch GmbHInventors: Gerd Dornhoefer, Guenther Bantleon, Thanh-Hung Nguyen-Schaefer, Martin Moeller, Thomas Hebner
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Publication number: 20060194091Abstract: A fuel cell system has a fuel cell unit including an anode, and a recirculation unit for recirculating hydrogenous operating material flowing out of the fuel cell unit back into the fuel cell unit, wherein the recirculation unit has at least one drive unit for driving a flow of an operating material, and the drive unit is configured as a pneumatic drive unit or hydraulic drive unit for utilizing an energy of a fluid.Type: ApplicationFiled: February 23, 2006Publication date: August 31, 2006Inventors: Willi Strohl, Guenther Bantleon, Thanh-Hung Nguyen-Schaefer, Klaus Reymann, Michael Baeuerle, Helmut Schneider, Gunter Winkler, Thomas Heid
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Patent number: 6994276Abstract: A device for mixing fluids, in particular a gas injection valve, nozzle valve, mixing nozzle or jet compressor, is proposed. To that end, a first fluid-carrying device (12) for carrying a first fluid and a second fluid-carrying device (13) for carrying a second fluid are provided; the fluids are mixed with one another in a mixing region (16) that is in communication with the fluid-carrying devices (12, 13). In addition, a means (20) for generating turbulence in the applicable fluid and a heater, with which the fluid can be heated before reaching the mixing region (16), disposed downstream of the means (20) for generating turbulence in terms of the flow direction of the applicable fluid are associated with at least one of the fluid-carrying devices (12, 13). The proposed device is used in particular for mixing hydrogen and saturated steam and to deliver this mixture to a fuel cell.Type: GrantFiled: July 24, 2002Date of Patent: February 7, 2006Assignee: Robert Bosch GmbHInventors: Ian Faye, Thanh-Hung Nguyen-Schaefer