Patents Assigned to Cummins Emission Solutions Inc.
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Publication number: 20230392531Abstract: An exhaust gas system includes an engine-turbine exhaust gas conduit, a turbocharger, a turbine-housing exhaust gas conduit, an injection housing, a dosing module, and a bypass system. The engine-turbine exhaust gas conduit is configured to receive exhaust gas. The turbocharger includes a turbine. The turbine is coupled to the engine-turbine exhaust gas conduit. The turbine-housing exhaust gas conduit is coupled to the turbine. The injection housing is coupled to the turbine-housing exhaust gas conduit and centered on an injection housing axis. The dosing module is coupled to the injection housing and includes an injector. The injector is configured to dose reductant into the injection housing. The injector is centered on an injector axis. The bypass system includes a bypass inlet conduit, a bypass valve, and a bypass outlet conduit. The bypass inlet conduit is coupled to the engine-turbine exhaust gas conduit.Type: ApplicationFiled: August 17, 2023Publication date: December 7, 2023Applicant: Cummins Emission Solutions Inc.Inventors: Colin L. Norris, Matthew Henry, Stephen W. Caddy, Randolph G. Zoran, Stephen M. Holl, Matthew Robert Brookes, Jamie Archer, John M. Clark
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Publication number: 20230392534Abstract: An exhaust gas aftertreatment system includes an introduction housing, a transfer housing, a distributing housing, and a first aftertreatment component. The introduction housing is configured to receive an exhaust gas and a treatment fluid. The transfer housing is coupled to the introduction housing and configured to receive the exhaust gas and the treatment fluid from the introduction housing. The distributing housing is coupled to the transfer housing and configured to receive the exhaust gas and the treatment fluid from the transfer housing. The distributing housing includes a distributing housing first panel and a distributing housing first panel opening. The distributing housing first panel opening extends through the distributing housing first panel. The first aftertreatment component is configured to receive at least a portion of the exhaust gas and the treatment fluid from the distributing housing.Type: ApplicationFiled: November 5, 2021Publication date: December 7, 2023Applicant: CUMMINS EMISSION SOLUTIONS INC.Inventors: Alphonse R. Luecking, Thomas Osgood Roe, Peter C. Christianson, Tyler J. Haverland, Ken Hummel, Timothy C. Clementz
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Patent number: 11834979Abstract: A lance injector assembly for an exhaust component includes: a shaft configured to extend into an exhaust conduit of the exhaust component, the shaft being hollow so as to define a channel therethrough, wherein an opening is defined in a wall of the shaft proximate to a second end of the shaft that is opposite the first end; a cap coupled to a first end of the shaft; and a supply line disposed within the channel defined by the shaft, wherein a nozzle is disposed at a downstream end of the supply line, the nozzle being fluidly coupled to the shaft around the opening such that reductant is able to flow from the nozzle through the opening and into an exhaust gas flowing through the exhaust conduit. Air is present in the space between the supply line and the wall of the shaft, the air inhibiting heat transfer to the supply line.Type: GrantFiled: June 17, 2021Date of Patent: December 5, 2023Assignee: Cummins Emission Solutions Inc.Inventors: Samuel Johnson, John G. Buechler, Matthew K. Volmerding, Jacob W. Brown, Gaurav Hemant Pandit
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Patent number: 11834978Abstract: A vehicle system includes a diesel oxidation catalyst. The vehicle system includes a hydrocarbon-selective catalytic reduction unit located downstream of the diesel oxidation catalyst. The hydrocarbon-selective catalytic reduction unit is configured to receive exhaust gas from the diesel oxidation catalyst. The vehicle system includes a turbocharger located downstream of the hydrocarbon-selective catalytic reduction unit. The turbocharger is configured to receive exhaust gas from the hydrocarbon-selective catalytic reduction unit.Type: GrantFiled: July 30, 2019Date of Patent: December 5, 2023Assignee: Cummins Emission Solutions Inc.Inventor: Jacob Backhaus
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Publication number: 20230383707Abstract: A controller for an aftertreatment system coupled to an engine is configured to: in response to receiving an engine shutdown signal, determine an estimated amount of ammonia stored on a selective catalytic reduction (SCR) catalyst included in the aftertreatment system; in response to determining that the estimated amount of ammonia stored in the SCR catalyst is less than an ammonia storage threshold, cause flow of a heated gas towards the SCR catalyst; cause insertion of a reductant into an exhaust gas flowing through the aftertreatment system; and in response to determining that the estimated amount of ammonia stored in the SCR catalyst is equal to or greater than the ammonia storage threshold, cause shutdown of the engine.Type: ApplicationFiled: August 8, 2023Publication date: November 30, 2023Applicant: Cummins Emission Solutions Inc.Inventors: Matthew K. Volmerding, Simon Guest
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Patent number: 11828214Abstract: An aftertreatment system comprises a housing defining a first and a second internal volume fluidly isolated from each other. A first aftertreatment leg extends from the first to the second internal volume and includes an oxidation catalyst and a filter. The oxidation catalyst receives exhaust gas from an inlet conduit and the filter emits exhaust gas into the second internal volume. A second aftertreatment leg extends from the second to the first internal volume and includes at least one SCR catalyst disposed offset from the first aftertreatment leg. A decomposition tube is disposed offset from the SCR catalyst and the oxidation catalyst. The decomposition tube is configured to receive the exhaust gas from the second internal volume and communicate it to the inlet of the at least one SCR catalyst. A reductant injection inlet is defined proximate to the inlet of the decomposition tube for reductant insertion.Type: GrantFiled: April 27, 2021Date of Patent: November 28, 2023Assignee: Cummins Emission Solutions Inc.Inventors: Ryan M. Johnson, John G. Buechler, Matthew K. Volmerding, Randy G. Zoran
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Patent number: 11821348Abstract: An aftertreatment system includes a first mounting plate and a first hanger rod. The first mounting plate includes a first aperture and non-circular recessed portion aligned with the first aperture. The first hanger rod comprises a mounting plate connection portion and a shaft. The mounting plate includes a non-circular mounting head having a portion that is engaged with a portion the non-circular recessed portion so as to prevent rotation of the mounting plate connection relative to the first mounting plate. The shaft extends from the non-circular mounting head through the first aperture.Type: GrantFiled: August 1, 2022Date of Patent: November 21, 2023Assignee: Cummins Emission Solutions Inc.Inventor: Corey Verseman
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Patent number: 11808192Abstract: An exhaust gas system includes an engine-turbine exhaust gas conduit, a turbocharger, a turbine-housing exhaust gas conduit, an injection housing, a dosing module, and a bypass system. The engine-turbine exhaust gas conduit is configured to receive exhaust gas. The turbocharger includes a turbine. The turbine is coupled to the engine-turbine exhaust gas conduit. The turbine-housing exhaust gas conduit is coupled to the turbine. The injection housing is coupled to the turbine-housing exhaust gas conduit and centered on an injection housing axis. The dosing module is coupled to the injection housing and includes an injector. The injector is configured to dose reductant into the injection housing. The injector is centered on an injector axis. The bypass system includes a bypass inlet conduit, a bypass valve, and a bypass outlet conduit. The bypass inlet conduit is coupled to the engine-turbine exhaust gas conduit.Type: GrantFiled: July 30, 2020Date of Patent: November 7, 2023Assignee: CUMMINS EMISSION SOLUTIONS INC.Inventors: Colin L. Norris, Matthew Henry, Stephen W. Caddy, Randolph G. Zoran, Stephen M. Holl, Matthew Robert Brookes, Jamie Archer, John M. Clark
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Patent number: 11795848Abstract: An exhaust gas aftertreatment system includes: a first sensor configured to measure a parameter in the exhaust gas aftertreatment system; a second sensor configured to measure the parameter in the exhaust gas aftertreatment system, the second sensor disposed proximate the first sensor; and at least one controller configured to simultaneously receive sensor values from the first sensor and receive sensor values from the second sensor.Type: GrantFiled: May 12, 2022Date of Patent: October 24, 2023Assignee: Cummins Emission Solutions Inc.Inventors: Nathan A. Ottinger, M. Yusuf Khan, Z. Gerald Liu, Shirish Ambadas Shimpi
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Publication number: 20230304432Abstract: An exhaust gas aftertreatment system includes a housing assembly, a first catalyst member, and a second catalyst member. The housing assembly includes an upstream housing, a decomposition housing, a distributing housing, and a catalyst member housing. The upstream housing is centered on an upstream housing axis. The decomposition housing is coupled to the upstream housing and configured to receive exhaust gas from the upstream housing. The distributing housing is coupled to the decomposition housing and configured to receive the exhaust gas from the decomposition housing. The catalyst member housing is coupled to the distributing housing and configured to receive the exhaust gas from the distributing housing. The catalyst member housing is centered on a catalyst member housing axis that is parallel to the upstream housing axis. The first catalyst member extends within the catalyst member housing.Type: ApplicationFiled: October 21, 2021Publication date: September 28, 2023Applicant: Cummins Emission Solutions Inc.Inventors: Ryan M. Johnson, Matthew K. Volmerding, Jacob D. Canik, Pranjai Naik
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Patent number: 11767782Abstract: A reductant dosing system includes: an injector; a fixed displacement pump in fluid communication with the injector; a reductant source in fluid communication with the fixed displacement pump; a pressure sensor assembly configured to detect a pressure of reductant in the reductant dosing system; and a controller communicatively coupled to the fixed displacement pump and to the pressure sensor assembly, wherein the controller is configured to calculate a flow rate of the fixed displacement pump based on at least a calibration value determined based on data received from the pressure sensor assembly.Type: GrantFiled: May 25, 2018Date of Patent: September 26, 2023Assignee: CUMMINS EMISSION SOLUTIONS INC.Inventors: Vikram Sundararajan, Masoud Ziabakhsh Deilami, Catherine Alviz-Radi, Joe V. Hill, Patrick E. Conlon, Stephen M. Holl
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Publication number: 20230287841Abstract: A controller for controlling regeneration in an aftertreatment system comprising a first leg and a second leg is configured to: determine whether regeneration is permitted by the engine based on engine operating parameters; in response to regeneration being permitted, determine whether regeneration is required in at least one of the first leg or the second leg based on operating parameters of the first leg and the second leg, and whether regeneration is inhibited in either the first leg or the second leg; and in response to determining that (i) regeneration is required in at least one of the first or second leg, and (ii) regeneration is not inhibited in either the first or the second leg, cause insertion of hydrocarbons into the engine to thereby increase the temperature of the exhaust gas to a target temperature and cause regeneration in each of the first and second leg.Type: ApplicationFiled: March 10, 2022Publication date: September 14, 2023Applicant: Cummins Emission Solutions Inc.Inventors: Vikram Sundararajan, Jinqian Gong, Daniel D. Wilhelm, Vijay Ramchandra Kadam, Kerang Wang, Todd A. Corbet
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Publication number: 20230287816Abstract: An aftertreatment system for reducing constituents of an exhaust gas having a sulfur content includes: an oxidation catalyst; a filter disposed downstream of the oxidation catalyst; and a controller configured to, in response to determining that the filter is to be regenerated and a desulfation condition being satisfied: cause a temperature of the oxidation catalyst to increase to a first regeneration temperature that is greater than or equal to 400 degrees Celsius and less than 550 degrees Celsius, cause the temperature of the oxidation catalyst to be maintained at the first regeneration temperature for a first time period, and after the first time period, cause the temperature of the oxidation catalyst to increase to a second regeneration temperature equal to or greater than 550 degrees Celsius.Type: ApplicationFiled: May 16, 2023Publication date: September 14, 2023Applicant: Cummins Emission Solutions Inc.Inventors: Michael Cunningham, Aleksey Yezerets, Junhui LI, James A. Cramer
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Patent number: 11753975Abstract: An exhaust aftertreatment system for increasing fractional efficiency of diesel or gasoline particulate filters includes a particulate filter that includes a housing and a filter substrate positioned in the housing. The filter substrate is pre-conditioned with an aqueous solution or suspension configured to decompose or evaporate in response to exposure to heat so as to precondition the filter substrate.Type: GrantFiled: December 5, 2022Date of Patent: September 12, 2023Assignee: Cummins Emission Solutions Inc.Inventors: Changsheng C. Su, A. Carl McDonald, Ramakrishna Gopal Dontha, Niklas M. Schmidt, Nathan A. Ottinger, Z. Gerald Liu, James C. Clerc, Yujun Wang
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Patent number: 11753979Abstract: An ammonia generating apparatus comprises a housing comprising a first end wall on which a reductant injector configured to insert a reductant into the housing is mountable. A heating coil assembly is disposed within the housing. A first end of the heating coil assembly is located proximate to a location of the first end wall where a reductant injector tip of the reductant injector is located when the reductant injector is mounted on the first end wall. The heating coil assembly is configured to generate heat sufficient to thermolyze the reductant to generate ammonia and reaction byproducts, in response to an electric current being passed therethrough. A hydrolysis catalyst can be disposed downstream of the heating coil assembly for catalyzing hydrolysis of the reaction byproducts into ammonia.Type: GrantFiled: August 22, 2019Date of Patent: September 12, 2023Assignee: Cummins Emission Solutions Inc.Inventors: Mihai Chiruta, Samuel Johnson, Tiffany D. Morgan, George Eugene Mavroudis, Luis N. Moreno
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Patent number: 11732632Abstract: A system comprising an aftertreatment system comprising: a catalyst member, and a first exhaust conduit upstream of the catalyst member; a first temperature sensor operatively coupled to the catalyst member; a flow sensor coupled to the first exhaust conduit; and a controller. The controller determines a temperature of the catalyst member, a flow rate of exhaust within the first exhaust conduit, and a space velocity of the exhaust within the catalyst member. The controller determines a first degradation value indicative of a degradation of the catalyst member. The controller determines a first difference between the first degradation value and a first degradation reference value and a second difference between the first degradation value and a second degradation reference value. After determining that the first difference is less than the second difference, the controller selects a first calibration metric. The controller determines a first efficiency value associated with the catalyst member.Type: GrantFiled: July 29, 2022Date of Patent: August 22, 2023Assignee: Cummins Emission Solutions Inc.Inventors: Cami Brigette Ethington, Premjee Sasidharan, Huiling Li, Varun Sood
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Publication number: 20230258115Abstract: A system includes: an engine; and an aftertreatment system for treating exhaust gas produced by the engine, the aftertreatment system including: an exhaust conduit configured to receive the exhaust gas and hydrocarbons from the engine; a preheating oxidation catalyst; a primary oxidation catalyst disposed downstream of the preheating oxidation catalyst; a selective catalytic reduction system disposed in the exhaust conduit downstream of the primary oxidation catalyst. The aftertreatment system includes: a controller configured to: determine a temperature of the exhaust gas at an inlet of the selective catalytic reduction system, and in response to the temperature of the exhaust gas at the inlet of the selective catalytic reduction system being below a threshold temperature, cause the engine to provide the hydrocarbons to the exhaust conduit.Type: ApplicationFiled: April 14, 2023Publication date: August 17, 2023Applicant: Cummins Emission Solutions Inc.Inventors: Shirish S. Punde, Rayomand Dabhoiwala, James Nicholas Reynolds
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Patent number: 11725561Abstract: A sampling assembly for an exhaust gas aftertreatment system includes a body layer, an outer bowl, a first sampler, and an inner bowl. The body layer defines a cylindrical passage. The outer bowl is coupled to the body layer. The first sampler extends circumferentially along the body layer to the outer bowl. The first sampler includes a first sampler channel and a first sampler aperture. The first sampler channel is configured to provide exhaust gas into the outer bowl. The first sampler aperture is configured to receive the exhaust gas from the cylindrical passage and provide the exhaust gas into the first sampler channel. The inner bowl is disposed at least partially within the outer bowl and configured to receive the exhaust gas from the outer bowl and provide the exhaust gas into the cylindrical passage.Type: GrantFiled: May 21, 2019Date of Patent: August 15, 2023Assignee: Cummins Emission Solutions Inc.Inventors: John Ringstad, Peter Christianson
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Publication number: 20230243285Abstract: A header assembly for an aftertreatment system includes: a header including: a suction port, and a return port; a first splitting device configured to receive a first flow of reductant from the suction port and to split the first flow into a first inlet flow and a second inlet flow; a second splitting device configured to receive a first outlet flow and a second outlet flow and to provide a second flow to the return port of the header; a first inlet line configured to direct the first inlet flow to a first dosing module; a second inlet line configured to direct the second outlet flow to a second dosing module; a first outlet line configured to direct the first outlet flow to the second splitting device; and a second outlet line configured to direct the second outlet flow to the second splitting device.Type: ApplicationFiled: April 10, 2023Publication date: August 3, 2023Applicant: Cummins Emission Solutions Inc.Inventors: Joe V. Hill, Bolaji Suberu
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Patent number: 11708777Abstract: A lance injector assembly for an exhaust component includes: an exhaust conduit; a shaft configured to extend into the exhaust conduit and dispense reductant from a hydraulically-actuated valve; an actuator configured to operate the hydraulically-actuated valve; and a mounting system configured to couple the actuator and the shaft to the exhaust conduit. The mounting system prevents the actuator from directly contacting the exhaust conduit.Type: GrantFiled: June 17, 2021Date of Patent: July 25, 2023Assignee: Cummins Emission Solutions Inc.Inventors: Samuel Johnson, John G. Buechler, Matthew K. Volmerding, Jacob W. Brown, Gaurav Hemant Pandit