Patents Assigned to Cummins Emission Solution Inc.
  • Sorption enhanced reaction technology for increased performance from automotive catalysts
    Patent number: 10427100
    Abstract: A method for nitrogen monoxide (NO) oxidation in catalytic systems is disclosed. The method includes receiving NO-containing exhaust gas from an internal combustion engine system, reacting NO with a stoichiometric amount of oxygen gas (O2), the reacting taking place in the presence of a sorbent and a catalyst, and recovering an amount of nitrogen dioxide (NO2) surpassing the equilibrium limitation of the NO oxidation reaction.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: October 1, 2019
    Assignee: Cummins Emission Solutions Inc.
    Inventor: Christopher J. Keturakis
  • COMPACT SIDE INLET AND OUTLET EXHAUST AFTERTREATMENT SYSTEM
    Publication number: 20190284979
    Abstract: An exhaust aftertreatment assembly and method of manufacturing and operating an exhaust aftertreatment assembly. An exhaust aftertreatment assembly includes an aftertreatment housing and an inlet conduit coupled to the aftertreatment housing at an inlet port so as to transfer exhaust gas into the aftertreatment housing. An inlet chamber is positioned in the aftertreatment housing. The inlet chamber is fluidly coupled to the inlet port of the aftertreatment housing to receive the exhaust gas from the inlet conduit.
    Type: Application
    Filed: June 6, 2019
    Publication date: September 19, 2019
    Applicant: Cummins Emission Solutions, Inc.
    Inventors: Randolph G. Zoran, David M. Sarcona, Ryan M. Johnson, Enoch Nanduru
  • Systems and methods for reductant dosing including on-time correction for switching delays
    Patent number: 10415450
    Abstract: A controller includes a switching delay circuit structured to determine an open delay time and a close delay time for a reductant injector, each based on battery voltage and reductant injector coil temperature. A dosing circuit is structured to determine an open time that the armature pin must be in the fully open position so as to cause the injector to inject a first quantity of reductant. An actuation time is determined based on each of the open time, the open delay time, and the close delay time. The actuation time relates to a time that the coil must be energized so as to cause the injector to inject the first quantity of reductant. A switching command signal is transmitted to the injector to energize the coil for the calculated actuation time so as to cause the injector to inject the first quantity of reductant into an exhaust gas stream.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: September 17, 2019
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Vikram Sundararajan, Joe V. Hill
  • REDUCTANT INSERTION ASSEMBLIES INCLUDING MULTIPLE METERING ASSEMBLIES AND A SINGLE PUMP
    Publication number: 20190277175
    Abstract: A reductant insertion assembly for inserting a reductant into an aftertreatment system comprises a pump assembly including a pump. A first metering assembly is fluidly coupled to the pump. A second metering assembly is fluidly coupled to first metering assembly in series with the pump. The pump is configured to pump the reductant to the first metering assembly, and to the second metering assembly via the first metering assembly, such that a first reductant pressure in the first metering assembly is equal to a second reductant pressure in the second metering assembly.
    Type: Application
    Filed: March 6, 2018
    Publication date: September 12, 2019
    Applicant: Cummins Emission Solutions Inc.
    Inventors: Tyler Kent Lorenz, Colin L. Norris, Taren DeHart, Tony L. Bowden
  • EXHAUST FLUID FILTER INCLUDING HYDROCARBON DETECTION WITNESS MEDIA
    Publication number: 20190277178
    Abstract: An aftertreatment system includes an exhaust reductant tank configured to store an exhaust reductant. A filter is fluidically coupled to the exhaust reductant tank. The aftertreatment system includes a hydrocarbon detection device configured to indicate the presence of a hydrocarbon in the exhaust reductant. A catalyst is included in the system and configured to treat the exhaust reductant flowing through the system. The hydrocarbon detection device can include a hydrophobic paper, and can be disposed in the filter.
    Type: Application
    Filed: May 24, 2019
    Publication date: September 12, 2019
    Applicant: CUMMINS EMISSION SOLUTIONS, INC.
    Inventor: Kevin Gudorf
  • Reductant decomposition reactor chamber
    Patent number: 10408110
    Abstract: A decomposition reactor for an exhaust system includes an exterior component defining an internal volume and having an inlet and an outlet with the inlet and outlet are formed on a same side of the exterior component. A flow divider is positioned within the internal volume and defines a thermal management chamber and a main flow chamber. A first flow path of exhaust flows from the inlet into the main flow chamber to mix with dosed, and a second flow path of exhaust flows from the inlet into the thermal management chamber to control a temperature of a portion of the flow divider. In some implementations, one or more swirling diverters can be coupled to the flow divider and positioned proximate the outlet of the exterior component to impart a vortical motion to a combined reductant and exhaust gas flow exiting out the outlet.
    Type: Grant
    Filed: June 18, 2018
    Date of Patent: September 10, 2019
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Ryan Johnson, Udit Bhaveshkumar Shah, Samuel Johnson, Mahendra Mittapalli, Kartiki Jagtap
  • Article of manufacture for securing a catalyst substrate
    Patent number: 10406481
    Abstract: An aftertreatment component for use in an exhaust aftertreatment system. The aftertreatment component comprises an aftertreatment substrate and a compressible material. The compressible material may be formed from a plastic thermoset, a rubberized material, or a metal foil which permits for the selective expansion of the substrate within the compressible material, while also reducing cost and manufacturing complexity. In various embodiments, the aftertreatment substrate and the compressible materials may be formed separately and coupled to each other, or they may be formed concurrently via coextrusion.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: September 10, 2019
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Matthew Anderson, Arpad Somogyvari
  • Systems and methods for using liquid anhydrous ammonia as a reductant
    Patent number: 10408108
    Abstract: A reductant insertion system for delivering a reductant to an aftertreatment system comprises a reductant storage tank configured to store a liquid reductant. A pressure relief valve is operably coupled to the reductant storage tank. The pressure relief valve is configured to selectively open in response to a reductant gas pressure in the reductant storage tank exceeding a predetermined reductant gas pressure threshold. A reductant insertion assembly is fluidly coupled to the reductant storage tank and configured to deliver the liquid reductant to the aftertreatment system. The reductant insertion assembly comprises a shutoff valve configured to be selectively closed in response to a liquid reductant pressure in the reductant insertion assembly exceeding a liquid reductant pressure threshold, so as to stop delivery of the reductant from the reductant storage tank to the reductant insertion assembly.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: September 10, 2019
    Assignee: Cummins Emission Solutions Inc.
    Inventor: Matthew K. Volmerding
  • Assembly and methods for NOreducing reagent dosing with variable spray angle nozzle
    Patent number: 10392987
    Abstract: In an assembly and methods for NOx reductant dosing with variable spray angle nozzle, according to various embodiments, a reductant dosage is calculated. A reductant delivery region in an exhaust stream area of an aftertreatment system and an actuation period may be specified. Based at least on the reductant delivery region and the actuation period, the reductant insertion assembly may be placed in a state for reductant delivery such that one of a first array of reductant insertion ports and a second array of reductant insertion ports is in an open position. The shape of the variable spray angle nozzle may define different levels. Different arrays of reductant delivery ports may have varying operating characteristics, such as diameter, number of ports, actuation time, and/or reagent delivery angle and may be activated based on reductant flow pressure and/or reductant flow velocity.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: August 27, 2019
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Rajendra Ashok Kankarej, Vinay Kumar Joshi
  • Nanofiber augmented diesel particulate filters
    Patent number: 10391449
    Abstract: A particulate filter for use in an exhaust aftertreatment system includes a ceramic substrate and a plurality of ceramic nanofibers associated with pores of the ceramic substrate. The plurality of ceramic nanofibers may be positioned on pores of the ceramic substrate, within pore channels of the ceramic substrate, or both on pores of the ceramic substrate and within pore channels of the ceramic substrate.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: August 27, 2019
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Kavitha Moorthy, Matthew P. Henrichsen, Changsheng C. Su
  • SYSTEM AND METHOD FOR VARYING REDUCTANT DELIVERY PRESSURE TO AFTERTREATMENT SYSTEMS
    Publication number: 20190249582
    Abstract: An aftertreatment system comprises a reductant storage tank and a SCR system including a catalyst for reducing constituents of an exhaust gas. A reductant insertion assembly is fluidly coupled to the reductant storage tank and the SCR system. A controller is communicatively coupled to the reductant insertion assembly. The controller is configured to: determine an initial pressure of the reductant, determine a first pressure at which the reductant is to be delivered to the selective catalytic reduction system and adjust an operating parameter of the reductant insertion assembly. The adjustment of the operating parameter results in an at least selective delivery of the reductant at the first pressure to the SCR system.
    Type: Application
    Filed: April 26, 2019
    Publication date: August 15, 2019
    Applicant: Cummins Emission Solutions Inc.
    Inventors: Friedrich J. Zapf, Stephen M. Holl, John D. Crofts
  • POLYGONAL SUBSTRATE HOUSINGS AND ASSEMBLIES
    Publication number: 20190240619
    Abstract: A polygonal substrate assembly includes a polygonal substrate housing, a substrate, and a compressible mat. The compressible mat is positioned about the substrate and the substrate is press-fit within the polygonal substrate housing with the compressible mat. The polygonal substrate housing may include a sidewall having a concave portion. The polygonal substrate housing may include a substrate installation portion that flares out from a main sidewall at an end of the polygonal substrate housing. The polygonal substrate housing may be formed from a plurality of substrate housing components welded together. The polygonal substrate housing can include one or more stiffening ribs. Several polygonal substrate assemblies may be combined and coupled together to form an array in various geometric configurations.
    Type: Application
    Filed: July 20, 2017
    Publication date: August 8, 2019
    Applicant: CUMMINS EMISSION SOLUTIONS INC.
    Inventors: George E. Mavroudis, Taren Dehart, Daniel W. Woods, Ryan M. Johnson, Colin L. Norris, Randolph G. Zoran
  • System and method for monitoring particulate filter condition in an aftertreatment system
    Patent number: 10371036
    Abstract: A system and method for monitoring filtering condition in an aftertreatment system comprises measuring a first pressure upstream of a first particulate filter in the aftertreatment system. A second pressure downstream of the first particulate filter and upstream of a second particulate filter in the aftertreatment system is measured. A third pressure downstream of the second particulate filter is also measured. A difference in pressure between the second pressure and the third pressure is determined which corresponds to a filtering condition of the first particulate filter. The difference in pressure is compared with a predetermined threshold. If the difference in pressure exceeds the predetermined threshold the failure of the first particulate filter is identified.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: August 6, 2019
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Nassim Khaled, Michael Haas
  • SUBSTRATE SHAPE, GEOMETRY, POSITIONING, AND/OR CELL DENSITY TO IMPROVE AFTERTREATMENT PERFORMANCE
    Publication number: 20190234270
    Abstract: An aftertreatment component's shape, entrance geometry, and/or position within an aftertreatment assembly can be modified for local and/or bulk exhaust flow control. In some implementations, a body of the aftertreatment component has a non-circular cross-section, a non-circular opening, and/or a variable face geometry. The non-circular cross-section and/or opening can be a variety of different shapes.
    Type: Application
    Filed: October 20, 2017
    Publication date: August 1, 2019
    Applicant: CUMMINS EMISSION SOLUTIONS INC.
    Inventors: John G. Buechler, Randolph G. Zoran, Ryan M. Johnson, Stephen M. Holl, Taren DeHart, Jim L. Alonzo, Matthew L. Anderson, Apoorv Kalyankar, George Eugene Mavroudis, Gaurav Hemant Pandit
  • SYSTEMS AND METHODS FOR USING LIQUID ANHYDROUS AMMONIA AS A REDUCTANT
    Publication number: 20190234271
    Abstract: A reductant insertion system for delivering a reductant to an aftertreatment system comprises a reductant storage tank configured to store a liquid reductant. A pressure relief valve is operably coupled to the reductant storage tank. The pressure relief valve is configured to selectively open in response to a reductant gas pressure in the reductant storage tank exceeding a predetermined reductant gas pressure threshold. A reductant insertion assembly is fluidly coupled to the reductant storage tank and configured to deliver the liquid reductant to the aftertreatment system. The reductant insertion assembly comprises a shutoff valve configured to be selectively closed in response to a liquid reductant pressure in the reductant insertion assembly exceeding a liquid reductant pressure threshold, so as to stop delivery of the reductant from the reductant storage tank to the reductant insertion assembly.
    Type: Application
    Filed: January 30, 2018
    Publication date: August 1, 2019
    Applicant: Cummins Emission Solutions Inc.
    Inventor: Matthew K. Volmerding
  • Asynchronous reductant insertion in aftertreatment systems
    Patent number: 10364731
    Abstract: A method for asynchronously delivering a reductant to a first selective catalytic reduction system and a second selective catalytic reduction system of an aftertreatment system via a reductant insertion assembly, the reductant insertion assembly comprising a first injector fluidly coupled to the first selective catalytic reduction system and a second injector fluidly coupled to the second selective catalytic reduction system, the method including: activating the first injector; maintaining the first injector activated for a first delivery time, thereby inserting a first amount of reductant into the first selective catalytic reduction system; deactivating the first injector; activating the second injector; and maintaining the second injector activated for a second delivery time, thereby inserting a second amount of reductant into the second selective catalytic reduction system.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: July 30, 2019
    Assignee: Cummins Emission Solutions Inc.
    Inventor: Nassim Khaled
  • Aftertreatment systems for dual-fuel engines
    Patent number: 10364725
    Abstract: Systems and methods for an aftertreatment system configured for use with a dual-fuel engine system are described. The method comprises determining an operating mode of the dual-fuel engine. Upon determining that the dual-fuel engine is operating in a dual-fuel mode or a natural gas mode, the dual-fuel engine operates in a stoichiometric operating condition, and the exhaust is received into a three-way catalyst communicatively connected to a selective catalytic reduction catalyst. Upon determining that the dual-fuel engine is not operating in the dual-fuel mode or the natural gas mode, the engine operates in a lean operating condition.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: July 30, 2019
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Yi Liu, Arvind V. Harinath, Arpad Somogyvari
  • SYSTEMS AND METHODS FOR PURGING A REDUCTANT INSERTION ASSEMBLY OF A REDUCTANT
    Publication number: 20190211729
    Abstract: A reductant insertion assembly includes: a first pump configured to pump a predetermined amount of a reductant into a selective catalytic reduction system; a reductant delivery line configured to deliver the reductant to the first pump from a reductant storage tank; a reductant return line configured to return reductant to the reductant storage tank from the first pump; a second pump configured to pump the reductant from the reductant storage tank to the first pump; and a valve selectively moveable between a closed position in which the second pump pumps the reductant through the reductant delivery line to the first pump, and an open position in which the second pump draws air through the valve and pumps the air through at least a portion of the reductant delivery line downstream of the valve and the first pump to purge the reductant insertion assembly of the reductant.
    Type: Application
    Filed: January 9, 2018
    Publication date: July 11, 2019
    Applicant: Cummins Emission Solutions Inc.
    Inventors: Karan Sanghavi, Nicholas Blodgett
  • Systems and methods for purging a reductant insertion assembly of a reductant
    Patent number: 10344651
    Abstract: A reductant insertion assembly includes: a first pump configured to pump a predetermined amount of a reductant into a selective catalytic reduction system; a reductant delivery line configured to deliver the reductant to the first pump from a reductant storage tank; a reductant return line configured to return reductant to the reductant storage tank from the first pump; a second pump configured to pump the reductant from the reductant storage tank to the first pump; and a valve selectively moveable between a closed position in which the second pump pumps the reductant through the reductant delivery line to the first pump, and an open position in which the second pump draws air through the valve and pumps the air through at least a portion of the reductant delivery line downstream of the valve and the first pump to purge the reductant insertion assembly of the reductant.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: July 9, 2019
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Karan Sanghavi, Nicholas Blodgett
  • Aftertreatment system housing
    Patent number: D855090
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: July 30, 2019
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Carl A. McDonald, Arvind V. Harinath, John G. Buechler, Ryan M. Johnson, Randolph G. Zoran