Patents by Inventor Mathias ROTHFUß
Mathias ROTHFUß 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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Publication number: 20240068390Abstract: A mixing arrangement for an exhaust-gas system of an internal combustion engine for mixing exhaust gas and reactant includes an exhaust-gas guiding component which delimits an exhaust-gas flow volume and which extends in the direction of a longitudinal axis, a reactant dispensing unit for dispensing reactant into the exhaust-gas flow volume, downstream of the reactant dispensing unit an exhaust-gas flow volume dividing arrangement, the exhaust-gas flow volume dividing arrangement dividing the exhaust-gas flow volume in a dividing length region into a plurality of partial exhaust-gas flow volumes, the plurality of partial exhaust-gas flow volumes including a central partial exhaust-gas flow volume and at least one partial exhaust-gas flow volume which surrounds the central partial exhaust-gas flow volume in a ring-like manner.Type: ApplicationFiled: August 24, 2023Publication date: February 29, 2024Inventors: Philipp Weinmann, Heike Többen, Mathias Rothfuss
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Patent number: 11898484Abstract: A mixing subassembly for an exhaust gas system of an internal combustion engine for mixing exhaust gas, which is discharged by an internal combustion engine, with reactant includes a mixing path which extends in the direction of a mixing path longitudinal axis and which has an upstream mixing path inflow region for receiving exhaust gas and/or reactant in the mixing path. The mixing path includes a core flow channel, through which a first exhaust gas partial flow flows, and a bypass flow channel, through which a second exhaust gas partial flow flows. At least one flow blocking element reduces a flow cross section of the bypass flow channel and is arranged in the bypass flow channel.Type: GrantFiled: February 3, 2023Date of Patent: February 13, 2024Assignee: Purem GmbHInventors: Philipp Weinmann, Vincent Eder, Mathias Rothfuss, Tobias Wolf, Michael Dentler, Alexander Kauderer
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Publication number: 20230250746Abstract: A mixing subassembly for an exhaust gas system of an internal combustion engine for mixing exhaust gas, which is discharged by an internal combustion engine, with reactant includes a mixing path which extends in the direction of a mixing path longitudinal axis and which has an upstream mixing path inflow region for receiving exhaust gas and/or reactant in the mixing path. The mixing path includes a core flow channel, through which a first exhaust gas partial flow flows, and a bypass flow channel, through which a second exhaust gas partial flow flows. At least one flow blocking element reduces a flow cross section of the bypass flow channel and is arranged in the bypass flow channel.Type: ApplicationFiled: February 3, 2023Publication date: August 10, 2023Inventors: Philipp Weinmann, Vincent Eder, Mathias Rothfuss, Tobias Wolf, Michael Dentler, Alexander Kauderer
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Patent number: 11702974Abstract: An exhaust gas/reactant mixing arrangement for an exhaust system of an internal combustion engine mixes exhaust gas and reactant. The mixing arrangement includes an exhaust gas guide housing defining a longitudinal axis and having a housing wall. An exhaust gas duct is surrounded by the housing wall and exhaust gas can flow therethrough. A mixing zone has a mixing chamber formed between an upstream end wall and a downstream end wall and a reactant dispensing arrangement is supported on the exhaust gas guide housing. The reactant dispensing arrangement dispenses reactant into the mixing chamber along a reactant dispensing line in a dispensing direction. A mixture flow path leads from an inflow opening to an outflow opening and is formed in the mixing chamber. The mixture flow path has two flow deflection regions, which follow one another in a mixture flow direction and have mutually opposite flow deflection directions.Type: GrantFiled: April 18, 2022Date of Patent: July 18, 2023Assignee: Purem GmbHInventors: Peter Kast, Heike Többen, Philipp Weinmann, Oleksander Vyelyayev, Tobias Wolf, Mathias Rothfuss
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Publication number: 20220333521Abstract: An exhaust gas/reactant mixing arrangement for an exhaust system of an internal combustion engine mixes exhaust gas and reactant. The mixing arrangement includes an exhaust gas guide housing defining a longitudinal axis and having a housing wall. An exhaust gas duct is surrounded by the housing wall and exhaust gas can flow therethrough. A mixing zone has a mixing chamber formed between an upstream end wall and a downstream end wall and a reactant dispensing arrangement is supported on the exhaust gas guide housing. The reactant dispensing arrangement dispenses reactant into the mixing chamber along a reactant dispensing line in a dispensing direction. A mixture flow path leads from an inflow opening to an outflow opening and is formed in the mixing chamber. The mixture flow path has two flow deflection regions, which follow one another in a mixture flow direction and have mutually opposite flow deflection directions.Type: ApplicationFiled: April 18, 2022Publication date: October 20, 2022Inventors: Peter Kast, Heike Többen, Philipp Weinmann, Oleksander Vyelyayev, Tobias Wolf, Mathias Rothfuss
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Patent number: 11441470Abstract: An internal combustion engine exhaust system mixer device includes a bottom element (12) includes a downstream rear side (22) and a front side (44). The bottom element has a reactant introduction opening (31), open to a reactant receiving volume (46), and expands therefrom radially from the reactant introduction opening toward the front side. Exhaust gas passage ducts (58), arranged following one another in the circumferential direction about the opening axis (A), open to the reactant receiving volume. A swirl generation element (20) is connected to the bottom element and encloses the opening axis. A mixing volume (64) adjoins the reactant receiving volume in the direction of the opening axis and is formed in the swirl generation element. A plurality of exhaust gas passage openings (66), following one another in the circumferential direction, about the opening axis are provided in the swirl generation element.Type: GrantFiled: September 29, 2020Date of Patent: September 13, 2022Assignee: Purem GmbHInventors: Peter Kast, Michael Dentler, Vincent Eder, Mathias Rothfuss
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Publication number: 20210115829Abstract: An internal combustion engine exhaust system mixer device includes a bottom element (1) includes a downstream rear side (22) and a front side (44). The bottom element has a reactant introduction opening (31), open to a reactant receiving volume (46), and expands therefrom radially from the reactant introduction opening toward the front side. Exhaust gas passage ducts (58), arranged following one another in the circumferential direction about the opening axis (A), open to the reactant receiving volume. A swirl generation element (20) is connected to the bottom element and encloses the opening axis. A mixing volume (64) adjoins the reactant receiving volume in the direction of the opening axis and is formed in the swirl generation element. A plurality of exhaust gas passage openings (66), following one another in the circumferential direction, about the opening axis are provided in the swirl generation element.Type: ApplicationFiled: September 29, 2020Publication date: April 22, 2021Inventors: Peter KAST, Michael DENTLER, Vincent EDER, Mathias ROTHFUSS
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Patent number: 10167756Abstract: A muffler for an exhaust system of an internal combustion engine includes a housing with a circumferential wall. At least one resonator chamber (48) is defined by the circumferential wall and two base walls (28, 22), that are provided in the housing. At least one resonator pipe (50), with a first pipe end (51) and with a second pipe end (56), is connected to one of the base walls (28) in the area of a first opening (52) in the one of the base walls (28). In the alternative or in addition the one of the base walls (28) traverses an interior space such that the first pipe end (51) lies outside of the resonator chamber (48), with the second pipe end (56) being fixed to the other base wall (22).Type: GrantFiled: October 26, 2016Date of Patent: January 1, 2019Assignee: Eberspächer Exhaust Technology GmbH & Co. KGInventors: Michael Marquardt-Stammberger, Roland Schwarz, Thomas Uhlemann, Mathias Rothfuß, Martin Straehle, Benjamin Roehr
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Publication number: 20170321581Abstract: An exhaust muffler, for longitudinal installation in a vehicle, includes a muffler housing (28) elongated in the direction of a longitudinal axis (G) of the housing. The muffler housing (28) has a housing jacket (30) and two front walls (32, 34), which are arranged, with respect to the direction of the longitudinal axis (G) of the housing, at spaced locations from one another. The front walls (32, 34) and the housing jacket (30) define a muffler interior space. At least one inlet pipe leads into the muffler interior space and at least one outlet pipe leads out of the muffler interior space. The housing jacket includes at least one predetermined deformation area (64, 66) including at least one wall area (68, 70), not parallel to the housing longitudinal axis (G), provided at the housing jacket (30).Type: ApplicationFiled: May 8, 2017Publication date: November 9, 2017Inventors: Arnulf SPIETH, Daniel MESGHENA, Joachim MÜLLER, Mathias ROTHFUß, Michael WEIß, Georg WIRTH
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Publication number: 20170122154Abstract: A muffler for an exhaust system of an internal combustion engine includes a housing with a circumferential wall. At least one resonator chamber (48) is defined by the circumferential wall and two base walls (28, 22), that are provided in the housing. At least one resonator pipe (50), with a first pipe end (51) and with a second pipe end (56), is connected to one of the base walls (28) in the area of a first opening (52) in the one of the base walls (28). In the alternative or in addition the one of the base walls (28) traverses an interior space such that the first pipe end (51) lies outside of the resonator chamber (48), with the second pipe end (56) being fixed to the other base wall (22).Type: ApplicationFiled: October 26, 2016Publication date: May 4, 2017Inventors: Michael MARQUARDT-STAMMBERGER, Roland SCHWARZ, Thomas UHLEMANN, Mathias ROTHFUß, Martin STRAEHLE, Benjamin ROEHR
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Publication number: 20160347168Abstract: An exhaust muffler for transverse installation in a vehicle includes a muffler housing (26) elongated in the direction of a housing longitudinal axis (G) with a housing jacket (28) and two front walls (30, 32). The two front walls (30, 32) are arranged at spaced locations from one another and define an interior (34) of the muffler with the housing jacket (28). At least one inlet pipe (36) leads into the interior (34) of the muffler and at least one outlet pipe (20) leads out of the interior (34) of the muffler. At least one front wall (30, 32) has at least one predetermined deformation area (50, 52).Type: ApplicationFiled: May 27, 2016Publication date: December 1, 2016Inventors: Arnulf SPIETH, Daniel MESGHENA, Joachim MÜLLER, Mathias ROTHFUSS, Michael WEISS