Patents by Inventor MANOJ K. SAMPATH
MANOJ K. SAMPATH 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: 10711677Abstract: A mixer assembly for mixing an injected reductant with an exhaust gas output from a combustion engine comprises a mixer housing including a wall defining an exhaust passageway having a longitudinal axis. A tubular swirling device housing extends along a first axis substantially transverse to the longitudinal axis. The tubular swirling device includes a plurality of openings through which exhaust gas enters. The exhaust gas within the tubular swirling device swirls about the first axis and exits at an outlet end of the tubular swirling device. A mixing plate is positioned immediately downstream of the tubular swirling device. The mixing plate swirls the exhaust about a second axis extending parallel to the longitudinal axis.Type: GrantFiled: March 19, 2019Date of Patent: July 14, 2020Assignee: Tenneco Automotive Operating Company Inc.Inventors: Lawrence J. Noren, IV, Daniel J. Owen, Jeffrey W. Denton, Attila Kovacs, Eric A. Hein, Meng-Huang Lu, Manoj K. Sampath
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Patent number: 10443477Abstract: An aftertreatment system may include an exhaust gas passageway and a mixer assembly. The exhaust gas passageway may receive exhaust gas from an engine. The mixer assembly is disposed within the exhaust gas passageway and may include an upstream baffle, a downstream baffle, and a tube extending between and connected to the upstream and downstream baffles. The tube may include an inner surface defining a first flow path through the mixer assembly. The upstream and downstream baffles may be attached to each other, the tube and the exhaust gas passageway. The upstream and downstream baffles may cooperate to define a second flow path through the mixer assembly. The second flow path may extend in a rotational direction around an outer surface of the tube.Type: GrantFiled: April 25, 2017Date of Patent: October 15, 2019Assignee: Tenneco Automotive Operating Company Inc.Inventors: Manoj K. Sampath, Omkar Champhekar, Yanping Zhang
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Patent number: 10427099Abstract: A mixing system for an exhaust system includes a first mixing device having a plurality of first auger blades and an inlet having a first cross-sectional area. A second mixing device is separate and downstream from the first mixing device and includes a second auger blade. The second mixing device includes an inlet having a second cross-sectional area greater than the first cross-sectional area. A flow path longitudinal centerline of the first mixing device extends at an angle to a flow path longitudinal centerline of the second mixing device. A flow path longitudinal centerline of the first mixing device intersects the second auger blade. The first mixing device is disposed within a first portion of an exhaust pipe and the second mixing device is disposed in a second portion of the exhaust pipe. The second portion has a larger cross-sectional area than the first portion.Type: GrantFiled: September 26, 2018Date of Patent: October 1, 2019Assignee: Tenneco Automotive Operating Company Inc.Inventors: Jeffrey W. Denton, Eric A. Hein, Attila Kovacs, Kevin R. Reeder, Jonar Mendoza, Gary R. Moore, Manoj K. Sampath, John R. Hardin
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Publication number: 20190211733Abstract: A mixer assembly for mixing an injected reductant with an exhaust gas output from a combustion engine comprises a mixer housing including a wall defining an exhaust passageway having a longitudinal axis. A tubular swirling device housing extends along a first axis substantially transverse to the longitudinal axis. The tubular swirling device includes a plurality of openings through which exhaust gas enters. The exhaust gas within the tubular swirling device swirls about the first axis and exits at an outlet end of the tubular swirling device. A mixing plate is positioned immediately downstream of the tubular swirling device. The mixing plate swirls the exhaust about a second axis extending parallel to the longitudinal axis.Type: ApplicationFiled: March 19, 2019Publication date: July 11, 2019Inventors: Lawrence J. NOREN, IV, Daniel J. OWEN, Jeffrey W. DENTON, Attila KOVACS, Eric A. HEIN, Meng-Huang LU, Manoj K. SAMPATH
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Patent number: 10329985Abstract: A mixer assembly for treating exhaust with an injected reductant as the exhaust flows through an exhaust gas passageway includes a tubular shell and a rod. A first end and a second opposite end of the rod are fixed to the shell. The rod has a serpentine shape with a plurality of parallel extending portions interconnected by curved portions. The curved portions are positioned proximate an inner surface of the shell such that the rod traverses the exhaust passageway. The mixer assembly is positioned such that the rod is directly impinged by reductant injected into the exhaust gas passageway.Type: GrantFiled: June 27, 2017Date of Patent: June 25, 2019Assignee: Tenneco Automotive Operating Company Inc.Inventor: Manoj K. Sampath
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Patent number: 10273855Abstract: A mixer assembly for mixing an injected reductant with an exhaust gas output from a combustion engine comprises a mixer housing including a wall defining an exhaust passageway having a longitudinal axis. A tubular swirling device housing extends along a first axis substantially transverse to the longitudinal axis. The tubular swirling device includes a plurality of openings through which exhaust gas enters. The exhaust gas within the tubular swirling device swirls about the first axis and exits at an outlet end of the tubular swirling device. A mixing plate is positioned immediately downstream of the tubular swirling device. The mixing plate swirls the exhaust about a second axis extending parallel to the longitudinal axis.Type: GrantFiled: June 21, 2018Date of Patent: April 30, 2019Assignee: Tenneco Automotive Operating Company Inc.Inventors: Lawrence J. Noren, IV, Daniel J. Owen, Jeffrey W. Denton, Attila Kovacs, Eric A. Hein, Meng-Huang Lu, Manoj K. Sampath
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Publication number: 20190022583Abstract: A mixing system for an exhaust system includes a first mixing device having a plurality of first auger blades and an inlet having a first cross-sectional area. A second mixing device is separate and downstream from the first mixing device and includes a second auger blade. The second mixing device includes an inlet having a second cross-sectional area greater than the first cross-sectional area. A flow path longitudinal centerline of the first mixing device extends at an angle to a flow path longitudinal centerline of the second mixing device. A flow path longitudinal centerline of the first mixing device intersects the second auger blade. The first mixing device is disposed within a first portion of an exhaust pipe and the second mixing device is disposed in a second portion of the exhaust pipe. The second portion has a larger cross-sectional area than the first portion.Type: ApplicationFiled: September 26, 2018Publication date: January 24, 2019Inventors: Jeffrey W. DENTON, Eric A. HEIN, Attila KOVACS, Kevin R. REEDER, Jonar MENDOZA, Gary R. MOORE, Manoj K. SAMPATH, John R. HARDIN
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Publication number: 20180371978Abstract: A mixer assembly for treating exhaust with an injected reductant as the exhaust flows through an exhaust gas passageway includes a tubular shell and a rod. A first end and a second opposite end of the rod are fixed to the shell. The rod has a serpentine shape with a plurality of parallel extending portions interconnected by curved portions. The curved portions are positioned proximate an inner surface of the shell such that the rod traverses the exhaust passageway. The mixer assembly is positioned such that the rod is directly impinged by reductant injected into the exhaust gas passageway.Type: ApplicationFiled: June 27, 2017Publication date: December 27, 2018Inventor: Manoj K. SAMPATH
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Publication number: 20180306083Abstract: An aftertreatment system may include an exhaust gas passageway and a mixer assembly. The exhaust gas passageway may receive exhaust gas from an engine. The mixer assembly is disposed within the exhaust gas passageway and may include an upstream baffle, a downstream baffle, and a tube extending between and connected to the upstream and downstream baffles. The tube may include an inner surface defining a first flow path through the mixer assembly. The upstream and downstream baffles may be attached to each other, the tube and the exhaust gas passageway. The upstream and downstream baffles may cooperate to define a second flow path through the mixer assembly. The second flow path may extend in a rotational direction around an outer surface of the tube.Type: ApplicationFiled: April 25, 2017Publication date: October 25, 2018Inventors: Manoj K. Sampath, Omkar Champhekar, Yanping Zhang
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Publication number: 20180298802Abstract: A mixer assembly for mixing an injected reductant with an exhaust gas output from a combustion engine comprises a mixer housing including a wall defining an exhaust passageway having a longitudinal axis. A tubular swirling device housing extends along a first axis substantially transverse to the longitudinal axis. The tubular swirling device includes a plurality of openings through which exhaust gas enters. The exhaust gas within the tubular swirling device swirls about the first axis and exits at an outlet end of the tubular swirling device. A mixing plate is positioned immediately downstream of the tubular swirling device. The mixing plate swirls the exhaust about a second axis extending parallel to the longitudinal axis.Type: ApplicationFiled: June 21, 2018Publication date: October 18, 2018Inventors: Lawrence J. NOREN, IV, Daniel J. OWEN, Jeffrey W. DENTON, Attila KOVACS, Eric A. HEIN, Meng-Huang LU, Manoj K. SAMPATH
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Patent number: 10086333Abstract: A mixing system for an exhaust aftertreatment system includes a first mixing device having a plurality of first auger blades and an inlet having a first cross-sectional area. A second mixing device is separate and downstream from the first mixing device and includes a second auger blade. The second mixing device includes an inlet having a second cross-sectional area greater than the first cross-sectional area. A plurality of flow paths created by the first mixing device are recombined into a single flow path between the first and second mixing devices. A longitudinal center line of the first mixing device is offset from a longitudinal center line of the second mixing device.Type: GrantFiled: February 23, 2016Date of Patent: October 2, 2018Assignee: Tenneco Automotive Operating Company Inc.Inventors: Jeffrey W. Denton, Eric A. Hein, Attila Kovacs, Kevin R. Reeder, Jonar Mendoza, Gary R. Moore, Manoj K. Sampath, John R. Hardin
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Patent number: 10047657Abstract: A mixer assembly for mixing an injected reductant with an exhaust gas output from a combustion engine comprises a mixer housing including a wall defining an exhaust passageway having a longitudinal axis. A tubular swirling device housing extends along a first axis substantially transverse to the longitudinal axis. The tubular swirling device includes a plurality of openings through which exhaust gas enters. The exhaust gas within the tubular swirling device swirls about the first axis and exits at an outlet end of the tubular swirling device. A mixing plate is positioned immediately downstream of the tubular swirling device and includes apertures through which the exhaust gas exiting the outlet end of the tubular swirling device flows. The mixing plate swirls the exhaust about a second axis extending parallel to the longitudinal axis.Type: GrantFiled: August 15, 2017Date of Patent: August 14, 2018Assignee: Tenneco Automotive Operating Company Inc.Inventors: Lawrence J. Noren, IV, Daniel J. Owen, Jeffrey W. Denton, Attila Kovacs, Eric A. Hein, Meng-Huang Lu, Manoj K. Sampath
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Patent number: 9975093Abstract: A mixer for mixing an exhaust flow in an exhaust pipe includes a tubular housing having a first end, a second end and a center portion positioned between the ends. The center portion has a reduced size in relation to at least one of the first and second ends. The housing includes circumferentially spaced apart apertures extending through the center portion. A mixing element includes a body having a first peripheral portion and a second peripheral portion. The first peripheral portion is fixed to the center portion at a location adjacent to one of the apertures. The second peripheral portion is fixed to the center portion at a location adjacent to another one of the apertures.Type: GrantFiled: July 14, 2015Date of Patent: May 22, 2018Assignee: Tenneco Automotive Operation Company Inc.Inventors: Manoj K. Sampath, Rangan Chakravarthi, James Dougherty
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Publication number: 20170342888Abstract: A mixer assembly for mixing an injected reductant with an exhaust gas output from a combustion engine comprises a mixer housing including a wall defining an exhaust passageway having a longitudinal axis. A tubular swirling device housing extends along a first axis substantially transverse to the longitudinal axis. The tubular swirling device includes a plurality of openings through which exhaust gas enters. The exhaust gas within the tubular swirling device swirls about the first axis and exits at an outlet end of the tubular swirling device. A mixing plate is positioned immediately downstream of the tubular swirling device and includes apertures through which the exhaust gas exiting the outlet end of the tubular swirling device flows. The mixing plate swirls the exhaust about a second axis extending parallel to the longitudinal axis.Type: ApplicationFiled: August 15, 2017Publication date: November 30, 2017Inventors: Lawrence J. NOREN, IV, Daniel J. OWEN, Jeffrey W. DENTON, Attila KOVACS, Eric A. HEIN, Meng-Huang LU, Manoj K. SAMPATH
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Patent number: 9726063Abstract: An exhaust gas treatment system for reducing emissions from an engine includes an exhaust conduit adapted to supply an exhaust stream from the engine to an exhaust treatment device. An injector injects a reagent through an aperture in the conduit into the exhaust stream. A flow modifier is positioned within the exhaust conduit and comprises a plate including a plurality of bores spaced apart from one another and positioned about a periphery of the plate. The plate also includes a plurality of slots positioned in parallel with each other.Type: GrantFiled: December 2, 2015Date of Patent: August 8, 2017Assignee: Tenneco Automotive Operating Company Inc.Inventors: Manoj K. Sampath, Ryan A. Floyd
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Patent number: 9518496Abstract: An exhaust after-treatment system for treating an exhaust produced by an engine, including an exhaust passage in communication with the engine; an injector for dosing an exhaust treatment fluid into the exhaust passage, a mixing device positioned downstream from the injector, the mixing device operable to intermingle the exhaust treatment fluid and the exhaust; an irregularly-shaped exhaust treatment substrate positioned downstream from the mixing device; and a dispersion device positioned between the mixing device and the irregularly-shaped exhaust treatment substrate. The dispersion device includes a plurality of dispersion members each being operable to direct an exhaust stream flowing through the dispersion device into a plurality of different directions to disperse the exhaust flow over substantially an entire surface of the irregularly-shaped exhaust treatment substrate.Type: GrantFiled: September 17, 2013Date of Patent: December 13, 2016Assignee: Tenneco Automotive Operating Company Inc.Inventors: Edward C. Hill, Hyde Kani, John Hardin, Manoj K. Sampath
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Patent number: 9435240Abstract: An aftertreatment system may include an exhaust pipe and a mixing pipe. The exhaust pipe receives exhaust gas from an engine. The mixing pipe is disposed in the exhaust pipe and may include a tubular portion and a plurality of blades extending from a longitudinal end of the tubular portion. The tubular portion may include a plurality of openings extending through inner and outer diametrical surfaces of the tubular portion. The tubular portion and the plurality of blades may define an integrally formed unitary body.Type: GrantFiled: April 24, 2014Date of Patent: September 6, 2016Assignee: Tenneco Automotive Operating Company Inc.Inventors: Manoj K. Sampath, Joshua Hicks, Ryan A. Floyd
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Publication number: 20160243510Abstract: A mixing system for an exhaust aftertreatment system includes a first mixing device having a plurality of first auger blades and an inlet having a first cross-sectional area. A second mixing device is separate and downstream from the first mixing device and includes a second auger blade. The second mixing device includes an inlet having a second cross-sectional area greater than the first cross-sectional area. A plurality of flow paths created by the first mixing device are recombined into a single flow path between the first and second mixing devices. A longitudinal center line of the first mixing device is offset from a longitudinal center line of the second mixing device.Type: ApplicationFiled: February 23, 2016Publication date: August 25, 2016Inventors: Jeffrey W. DENTON, Eric A. HEIN, Attila KOVACS, Kevin R. REEDER, Jonar MENDOZA, Gary R. MOORE, Manoj K. SAMPATH, John R. HARDIN
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Patent number: 9410464Abstract: An aftertreatment system may include an exhaust pipe and a mixing pipe. The exhaust pipe may receive exhaust gas from an engine and may include a first portion defining a first longitudinal axis and a second portion defining a second longitudinal axis that is angled relative to the first axis. The mixing pipe may be disposed in the exhaust pipe and may include a tubular portion and a collar extending radially outward from the tubular portion. The tubular portion may include a plurality of openings and a plurality of deflectors. The plurality of openings may extend through inner and outer diametrical surfaces of the tubular portion. Each of the plurality of deflectors may be disposed adjacent a corresponding one of the plurality of openings.Type: GrantFiled: August 6, 2013Date of Patent: August 9, 2016Assignee: Tenneco Automotive Operating Company Inc.Inventors: Joshua Hicks, Ryan A. Floyd, Manoj K. Sampath
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Publication number: 20160084133Abstract: An exhaust gas treatment system for reducing emissions from an engine includes an exhaust conduit adapted to supply an exhaust stream from the engine to an exhaust treatment device. An injector injects a reagent through an aperture in the conduit into the exhaust stream. A flow modifier is positioned within the exhaust conduit and comprises a plate including a plurality of bores spaced apart from one another and positioned about a periphery of the plate. The plate also includes a plurality of slots positioned in parallel with each other.Type: ApplicationFiled: December 2, 2015Publication date: March 24, 2016Inventors: Manoj K. Sampath, Ryan A. Floyd