Patents by Inventor Mihai Chiruta
Mihai Chiruta 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: 20170107882Abstract: An aftertreatment system comprises a SCR system including at least one catalyst for decomposing constituents of an exhaust gas produced by an engine. An exhaust conduit is fluidly coupled to the SCR system and is structured to deliver the exhaust gas to the SCR system and defines an exhaust conduit opening on a sidewall thereof. A mounting plate is positioned within the opening and includes a plurality of fluid channels. At least one mounting plate opening is defined through the mounting plate downstream of an inlet of the plurality of fluid channels and in fluid communication therewith. The fluid channels are structured to receive and direct at least a pair of exhaust gas streams to a respective opening so that they arrive at the respective opening from different directions. The pair of exhaust gas streams combine with a reductant inserted into the opening before flowing into the exhaust conduit.Type: ApplicationFiled: October 16, 2015Publication date: April 20, 2017Applicant: Cummins Emission Solutions Inc.Inventors: Mihai Chiruta, Z. Gerald Liu, Varjavan Dastoor
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Publication number: 20170074141Abstract: One form of the present application is an apparatus including an internal combustion engine structured to produce an exhaust flow, an exhaust system structured to receive the exhaust flow, and a reductant injector structured to inject reductant into a primary passage of the exhaust system upstream of a catalyst. The apparatus further includes an injector passage structured to receive a portion of exhaust upstream of the injector and further structured to flow the exhaust into the primary passage around the injector in a manner such that deposit formation is reduced.Type: ApplicationFiled: November 28, 2016Publication date: March 16, 2017Applicant: Cummins Emission Solutions, Inc.Inventors: Douglas A. MITCHELL, Mihai Chiruta, Lindsey R. Henry, Jim Alonzo
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Patent number: 9528414Abstract: One form of the present application is an apparatus including an internal combustion engine structured to produce an exhaust flow, an exhaust system structured to receive the exhaust flow, and a reductant injector structured to inject reductant into a primary passage of the exhaust system upstream of a catalyst. The apparatus further includes an injector passage structured to receive a portion of exhaust upstream of the injector and further structured to flow the exhaust into the primary passage around the injector in a manner such that deposit formation is reduced.Type: GrantFiled: October 10, 2014Date of Patent: December 27, 2016Assignee: CUMMINS EMISSION SOLUTIONS, INC.Inventors: Douglas A. Mitchell, Mihai Chiruta, Lindsey R. Henry, Jim Alonzo
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Publication number: 20160363027Abstract: An exhaust elbow includes an upstream sidewall defining an upstream portion of the exhaust elbow, a downstream sidewall defining a downstream portion of the exhaust elbow, and a deflector. The upstream portion is configured to receive an upstream exhaust gas. The deflector is coupled to the upstream sidewall of the exhaust elbow upstream and is configured to deflect a portion of the upstream exhaust gas received by the upstream portion of the exhaust elbow away from a region of an interior of the exhaust elbow into which an injected reductant from a dosing module is injected. The deflector may reduce and/or prevent formation of reductant deposits on a downstream sidewall. In some implementations, an exhaust assisted flow separator may also be included to direct a portion of the upstream exhaust gas received by the upstream portion of the exhaust elbow through a dosing opening.Type: ApplicationFiled: June 10, 2015Publication date: December 15, 2016Applicant: Cummins Emission Solutions Inc.Inventors: Tyler K. Lorenz, Mihai Chiruta, James Klingbeil, Jeremy D. Harris
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Patent number: 9470132Abstract: Various embodiments provide for apparatuses and systems involving a reactor pipe configured to receive reductant from an injector into a flow of exhaust exiting an engine. The reactor pipe comprises an inlet portion, a plurality of louvers, an outlet portion, and a radial loop. The inlet portion is structured to receive the flow exiting the engine into the reactor pipe. The louvers are structured to alter a direction of the flow. Further, the radial loop is configured to extend between the inlet portion and the outlet portion and receives the flow of exhaust through the inlet portion. The radial loop also directs the flow of the exhaust toward the outlet portion and reduces the velocity of the flow of the exhaust such that the reductant has an increased amount of time to react with the exhaust.Type: GrantFiled: December 5, 2014Date of Patent: October 18, 2016Assignee: CUMMINS EMISSION SOLUTIONS, INC.Inventors: Douglas A. Mitchell, Ryan M. Johnson, Kartiki Jagtap, Mahendra Mittapalli, Mihai Chiruta
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Publication number: 20160160728Abstract: Various embodiments provide for apparatuses and systems involving a reactor pipe configured to receive reductant from an injector into a flow of exhaust exiting an engine. The reactor pipe comprises an inlet portion, a plurality of louvers, an outlet portion, and a radial loop. The inlet portion is structured to receive the flow exiting the engine into the reactor pipe. The louvers are structured to alter a direction of the flow. Further, the radial loop is configured to extend between the inlet portion and the outlet portion and receives the flow of exhaust through the inlet portion. The radial loop also directs the flow of the exhaust toward the outlet portion and reduces the velocity of the flow of the exhaust such that the reductant has an increased amount of time to react with the exhaust.Type: ApplicationFiled: December 5, 2014Publication date: June 9, 2016Applicant: Cummins Emission Solutions, Inc.Inventors: Douglas A. Mitchell, Ryan M. Johnson, Kartiki Jagtap, Mahendra Mittapalli, Mihai Chiruta
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Patent number: 9341097Abstract: In one non-limiting embodiment, an apparatus for treating exhaust includes a reductant injector, an aftertreatment component including a NOx reduction catalyst, and a pathway for directing exhaust to the aftertreatment component. The pathway includes a constriction zone within which is positioned a mixing member. The constriction zone begins downstream of the reductant injector and upstream from the aftertreatment component. However, other embodiments, forms and applications are also envisioned.Type: GrantFiled: January 9, 2014Date of Patent: May 17, 2016Assignee: Cummins Inc.Inventors: Mark Bays, Ian A. Package, Upendra Deshmukh, Douglas Mitchell, Jason Drost, Mihai Chiruta, Joseph Brault
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Publication number: 20150361849Abstract: An exhaust assisted pipe assembly including an outer portion having an opening for receiving dosed reductant from a dosing module and an inner portion disposed within the outer portion. The inner portion defines a main flow path for receiving a first portion of a fluid from an upstream source, and the inner portion and the outer portion cooperatively define a first flow path and a second flow path. The first flow path is configured to direct a second portion of the fluid from the upstream source past the opening for receiving dosed reductant and into the main flow path to increase momentum of the dosed reductant into the main flow path. The second flow path is configured to direct a third portion of the fluid from the upstream source toward the dosed reductant to decrease the momentum of the dosed reductant in the main flow path.Type: ApplicationFiled: June 9, 2015Publication date: December 17, 2015Applicant: Cummins Emission Solutions, Inc.Inventors: Mihai Chiruta, Lindsey R. Henry, Douglas A. Mitchell, Randy G. Zoran, George E. Mavroudis, Lauren A. Hurlbut
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Publication number: 20150355080Abstract: A system for species concentration spatial reconstruction for an exhaust system includes an emitter, a detector, and a controller. The emitter is coupled to a first portion of the exhaust system and tuned to a specific wavelength of a species to be measured. The detector is coupled to a second portion of the exhaust system opposite to the first portion such that the detector is positioned to detect a beam attenuation of a beam from the emitter. The controller is configured to receive a plurality of beam attenuation measurements from the detector and to generate a cross-sectional species concentration map based on the plurality of beam attenuation measurements.Type: ApplicationFiled: June 10, 2014Publication date: December 10, 2015Inventors: Douglas A. Mitchell, Mihai Chiruta
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Patent number: 9057312Abstract: System and apparatus are disclosed for reducing reductant deposit formation in an exhaust aftertreatment system. A directing device is provided in the exhaust flow path upstream of a reductant opening into the exhaust flow path. The directing device is configured to direct an exhaust flow toward the reductant opening and around the directing device to effectively mix the exhaust flow with a reductant provided through the reductant opening to reduce the formation of reductant deposits.Type: GrantFiled: October 10, 2013Date of Patent: June 16, 2015Assignee: CUMMINS EMISSION SOLUTIONS, INC.Inventors: Achuth Munnannur, Mihai Chiruta, Matt Young, Deepesh Goyal, Karthik Muruganantham, Atul Abhyankar, Yogesh Birari
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Publication number: 20150101318Abstract: System and apparatus are disclosed for reducing reductant deposit formation in an exhaust aftertreatment system. A directing device is provided in the exhaust flow path upstream of a reductant opening into the exhaust flow path. The directing device is configured to direct an exhaust flow toward the reductant opening and around the directing device to effectively mix the exhaust flow with a reductant provided through the reductant opening to reduce the formation of reductant deposits.Type: ApplicationFiled: October 10, 2013Publication date: April 16, 2015Applicant: CUMMINS EMISSION SOLUTIONS INC.Inventors: Achuth Munnannur, MIHAI CHIRUTA, MATT YOUNG, DEEPESH GOYAL, KARTHIK MURUGANANTHAM, ATUL ABHYANKAR, YOGESH BIRARI
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Publication number: 20150101313Abstract: One form of the present application is an apparatus including an internal combustion engine structured to produce an exhaust flow, an exhaust system structured to receive the exhaust flow, and a reductant injector structured to inject reductant into a primary passage of the exhaust system upstream of a catalyst. The apparatus further includes an injector passage structured to receive a portion of exhaust upstream of the injector and further structured to flow the exhaust into the primary passage around the injector in a manner such that deposit formation is reduced.Type: ApplicationFiled: October 10, 2014Publication date: April 16, 2015Applicant: Cummins Emission Solutions, Inc.Inventors: Douglas A. Mitchell, Mihai Chiruta, Lindsey R. Henry, Jim Alonzo
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Publication number: 20140260202Abstract: In one non-limiting embodiment, an apparatus for treating exhaust includes a reductant injector, an aftertreatment component including a NOx reduction catalyst, and a pathway for directing exhaust to the aftertreatment component. The pathway includes a constriction zone within which is positioned a mixing member. The constriction zone begins downstream of the reductant injector and upstream from the aftertreatment component. However, other embodiments, forms and applications are also envisioned.Type: ApplicationFiled: January 9, 2014Publication date: September 18, 2014Applicant: Cummins Inc.Inventors: Mark Bays, Ian A. Package, Upendra Deshmukh, Douglas Mitchell, Jason Drost, Mihai Chiruta, Joseph Brault
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Patent number: 8240137Abstract: According to one embodiment, a reductant injection apparatus includes an injector attachment portion to which a reductant injector is coupleable. The apparatus also includes a perforated tubular portion coupled to the injector attachment portion. The perforated tubular portion includes an inlet, an outlet, and a diverging sidewall extending from the inlet to the outlet. Additionally, a plurality of perforations is formed in the sidewall. A reductant spray can be injected into the perforated tubular portion via the inlet. Further, a portion of a bulk exhaust gas stream can be diverted into the perforated tubular portion through the plurality of perforations, through the perforated tubular element, and out of the perforated tubular portion through the plurality of perforations. The portion of exhaust gas stream can then be rejoined with the bulk exhaust gas stream downstream of the perforated tubular portion.Type: GrantFiled: October 27, 2009Date of Patent: August 14, 2012Assignee: Cummins Filtration IP, Inc.Inventors: Z. Gerald Liu, Jim Clerc, Jason Drost, Jim Burke, Mihai Chiruta, Achuth Munnannur
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Patent number: 7976788Abstract: A reductant decomposition reactor for use in exhaust systems is provided that includes a middle tube portion formed with a reductant injector mount, an inlet tube, an outlet tube and a mixer. The inlet tube is formed at a first end of the middle tube portion and the outlet tube is formed at a second end of the middle tube portion and both are configured to create a sealed connection to different portions of the exhaust system. The mixer fits between the middle tube portion and the outlet tube and is configured to decompose the reductant in an exhaust stream. The injector mount comprises a tube like section that connects at a first end to the middle tube portion and at a second end to an injector port of the injector mount, and is configured to reduce recirculation flow patterns in the reactor, create a high velocity flow at an inner surface of the injector mount and thereby reduce the formation of reductant deposits.Type: GrantFiled: October 16, 2008Date of Patent: July 12, 2011Assignee: Cummins Filtration IP, Inc.Inventors: Jason Drost, Diane Boose, Robert Schellin, Achuth Munnannur, Mihai Chiruta
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Publication number: 20110094206Abstract: According to one embodiment, a reductant injection apparatus includes an injector attachment portion to which a reductant injector is coupleable. The apparatus also includes a perforated tubular portion coupled to the injector attachment portion. The perforated tubular portion includes an inlet, an outlet, and a diverging sidewall extending from the inlet to the outlet. Additionally, a plurality of perforations is formed in the sidewall. A reductant spray can be injected into the perforated tubular portion via the inlet. Further, a portion of a bulk exhaust gas stream can be diverted into the perforated tubular portion through the plurality of perforations, through the perforated tubular element, and out of the perforated tubular portion through the plurality of perforations. The portion of exhaust gas stream can then be rejoined with the bulk exhaust gas stream downstream of the perforated tubular portion.Type: ApplicationFiled: October 27, 2009Publication date: April 28, 2011Applicant: CUMMINS FILTRATION IP, INCInventors: Z. Gerald Liu, Jim Clerc, Jason Drost, Jim Burke, Mihai Chiruta, Achuth Munnannur
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Publication number: 20100098604Abstract: A reductant decomposition reactor for use in exhaust systems is provided that includes a middle tube portion formed with a reductant injector mount, an inlet tube, an outlet tube and a mixer. The inlet tube is formed at a first end of the middle tube portion and the outlet tube is formed at a second end of the middle tube portion and both are configured to create a sealed connection to different portions of the exhaust system. The mixer fits between the middle tube portion and the outlet tube and is configured to decompose the reductant in an exhaust stream. The injector mount comprises a tube like section that connects at a first end to the middle tube portion and at a second end to an injector port of the injector mount, and is configured to reduce recirculation flow patterns in the reactor, create a high velocity flow at an inner surface of the injector mount and thereby reduce the formation of reductant deposits.Type: ApplicationFiled: October 16, 2008Publication date: April 22, 2010Applicant: CUMMINS FILTRATION IP INC.Inventors: Jason Drost, Diane Boose, Robert Schellin, Achuth Munnannur, Mihai Chiruta