Patents by Inventor Andrew W. Osburn
Andrew W. Osburn 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: 20230318516Abstract: A controller for controlling flow of coolant to one or more components of a vehicle is disclosed. The controller determines respective amounts of heat expected to be rejected by the one or more components of the vehicle in a steady state of operation at current operating conditions of the one or more components, and generates a feedforward flow control signal based at least in part on the determined amounts of heat and a target temperature for the one or more components. The controller generates a controller output signal based at least in part on the feedforward control signal, and provides the controller output signal to the cooling system to control flow of coolant to the one or more components of the vehicle from the cooling system in accordance with the determined amounts of heat expected to be rejected by the one or more components of the vehicle.Type: ApplicationFiled: March 31, 2022Publication date: October 5, 2023Inventors: David B. Snyder, Andrew W. Osburn, Anant Puri
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Publication number: 20230264672Abstract: In a system having a hybrid powertrain having a piston internal combustion engine, and a motor/generator, and the motor generator being coupleable to a clutch and thereby to a gearbox, the engine further being equipped with a valvetrain control system operable to change the engine valve operation between a first mode in which the engine can operate in a conventional internal combustion mode and a second mode in which pumping losses are reduced when the engine is not operating in a conventional internal combustion mode. This allows it to be rotated without generating power, in a hybrid mode, with minimal losses.Type: ApplicationFiled: February 15, 2023Publication date: August 24, 2023Applicant: Cummins Inc.Inventors: Chunyi Xia, Andrew W. Osburn, David B. Snyder, Adam C. Cecil, Anant Puri, Ming-Feng Hsieh, Timothy Shipp
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Patent number: 11591949Abstract: An aftertreatment system for treating constituents of an exhaust gas produced by an engine includes a heater configured to selectively heat the exhaust gas entering the aftertreatment system. An aftertreatment component is disposed downstream of the heater. A gas sensor is disposed downstream of the heater and upstream of the aftertreatment component. The gas sensor comprises a sensing element, and a heating element configured to selectively heat the sensing element to an operating temperature of the sensing element.Type: GrantFiled: February 28, 2022Date of Patent: February 28, 2023Assignee: Cummins Emission Solutions Inc.Inventors: Colin L. Norris, Andrew W. Osburn, Ryan M. Johnson, Todd A. Corbet, Kyle Robert Fath, Lindsey R. Henry, Baseer Faalzada
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Publication number: 20220388514Abstract: A method for managing emissions from a vehicle having an aftertreatment system is provided. The method includes: receiving, by a controller, information indicative of a temperature of an aftertreatment system of the vehicle and a power output of an engine of the vehicle; comparing, by the controller, the temperature of the aftertreatment system to a temperature threshold; comparing, by the controller, the power output to a power output threshold; and responsive to the comparisons, commanding, by the controller, an aftertreatment system heater to selectively engage and disengage to warm the aftertreatment system of the vehicle.Type: ApplicationFiled: June 2, 2021Publication date: December 8, 2022Inventors: Kristopher R. Bare, Kenneth M. Follen, Xing Jin, Jinyong Luo, Manik Narula, Andrew W. Osburn, Anant Puri, Xiaobo Song, Ying Yuan
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Publication number: 20220282658Abstract: An aftertreatment system for treating constituents of an exhaust gas produced by an engine includes a heater configured to selectively heat the exhaust gas entering the aftertreatment system. An aftertreatment component is disposed downstream of the heater. A gas sensor is disposed downstream of the heater and upstream of the aftertreatment component. The gas sensor comprises a sensing element, and a heating element configured to selectively heat the sensing element to an operating temperature of the sensing element.Type: ApplicationFiled: February 28, 2022Publication date: September 8, 2022Applicant: Cummins Emission Solutions Inc.Inventors: Colin L. Norris, Andrew W. Osburn, Ryan M. Johnson, Todd A. Corbet, Kyle Robert Fath, Lindsey R. Henry, Baseer Faalzada
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Patent number: 10392991Abstract: An exemplary method includes determining an NH3 reference target in an exhaust conduit between a first SCR catalyst and a second SCR catalyst. The method includes determining a present amount of NH3 in the exhaust conduit between the first SCR catalyst and the second SCR catalyst, and determining an NH3 error term in response to the NH3 reference target and the present amount of NH3. The method further includes determining an amount of NOx downstream of the second SCR catalyst, and adjusting one of the NH3 reference target and a reductant doser command in response to the amount of NOx downstream of the second SCR catalyst. The method further includes providing a reductant doser command in response to the NH3 error term.Type: GrantFiled: October 20, 2016Date of Patent: August 27, 2019Assignee: Cummins Inc.Inventors: Mert Geveci, Andrew W. Osburn
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Patent number: 10156176Abstract: A method for diagnosing NOx sensors in an exhaust aftertreatment system includes suspending reductant dosing in an exhaust aftertreatment system; purging a reductant deposit in a selective catalytic reduction (SCR) system of the exhaust aftertreatment system; adjusting at least one of an ignition timing and an engine speed for an engine to adjust an engine out nitrogen oxide (NOx) amount; receiving measured SCR inlet NOx data from a SCR inlet NOx sensor and measured SCR outlet NOx data from a SCR outlet NOx sensor; determining a phase shift between the measured SCR inlet and SCR outlet NOx data; applying the determined phase shift to the SCR outlet NOx data; and determining a diagnostic feature based on the SCR inlet NOx data and the phase shifted SCR outlet NOx data regarding a state of the SCR inlet and outlet NOx sensors.Type: GrantFiled: September 19, 2017Date of Patent: December 18, 2018Assignee: Cummins, Inc.Inventors: Andrew W. Osburn, Christopher Ferguson, Tony James Hall, Brian P. Liimatta
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Patent number: 10100768Abstract: Unique apparatuses, methods, and systems including engine-out emissions controls are disclosed. One embodiment is a system including an internal combustion engine system including at least one fueling actuator and at least one air handling actuator and an electronic controller.Type: GrantFiled: May 3, 2016Date of Patent: October 16, 2018Assignee: Cummins Inc.Inventors: Phanindra V. Garimella, Andrew W. Osburn, Ming-Feng Hsieh
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Patent number: 10001042Abstract: Systems, methods and apparatus disclosed that include an internal combustion engine and an exhaust system that includes an exhaust aftertreatment system with an SCR catalyst. A NOx sensor downstream of the SCR catalyst is provided along with techniques for estimating an amount of NOx and NH3 at the tailpipe to decouple the impact of cross-sensitivity of the NOx sensor to NOx and NH3. Feedback control of the reductant dosing amount based on these estimates is also provided.Type: GrantFiled: January 5, 2015Date of Patent: June 19, 2018Assignee: Cummins Inc.Inventors: Phanindra V. Garimella, Andrew W. Osburn
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Publication number: 20180156096Abstract: An exhaust gas treatment system for an internal combustion engine may have a reductant delivery system that delivers reductant to an exhaust stream in an exhaust aftertreatment system. A temperature sensor may be positioned in or near the flow of reductant and exhaust to measure the temperature of the reductant and exhaust. A change in temperature over time, such as an increase, decrease, or change in variation amplitude, may indicate the presence of a reductant deposit in the system. Detection of the deposit may initiate a regeneration cycle in which the operating characteristics of the system change to eliminate the reductant deposit to prevent it from hindering the performance of the exhaust aftertreatment system.Type: ApplicationFiled: January 18, 2018Publication date: June 7, 2018Applicant: Cummins IP, Inc.Inventors: Douglas A. MITCHELL, Andrew W. OSBURN, Jason DROST, Jim F. BURKE, Joseph M. BRAULT
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Patent number: 9909480Abstract: An exhaust gas treatment system for an internal combustion engine may have a reductant delivery system that delivers reductant to an exhaust stream in an exhaust aftertreatment system. A temperature sensor may be positioned in or near the flow of reductant and exhaust to measure the temperature of the reductant and exhaust. A change in temperature over time, such as an increase, decrease, or change in variation amplitude, may indicate the presence of a reductant deposit in the system. Detection of the deposit may initiate a regeneration cycle in which the operating characteristics of the system change to eliminate the reductant deposit to prevent it from hindering the performance of the exhaust aftertreatment system.Type: GrantFiled: December 28, 2015Date of Patent: March 6, 2018Assignee: CUMMINS IP, INC.Inventors: Douglas A. Mitchell, Andrew W. Osburn, Jason Drost, Jim F. Burke, Joseph M. Brault
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Publication number: 20180003098Abstract: A method for diagnosing NOx sensors in an exhaust aftertreatment system includes suspending reductant dosing in an exhaust aftertreatment system; purging a reductant deposit in a selective catalytic reduction (SCR) system of the exhaust aftertreatment system; adjusting at least one of an ignition timing and an engine speed for an engine to adjust an engine out nitrogen oxide (NOx) amount; receiving measured SCR inlet NOx data from a SCR inlet NOx sensor and measured SCR outlet NOx data from a SCR outlet NOx sensor; determining a phase shift between the measured SCR inlet and SCR outlet NOx data; applying the determined phase shift to the SCR outlet NOx data; and determining a diagnostic feature based on the SCR inlet NOx data and the phase shifted SCR outlet NOx data regarding a state of the SCR inlet and outlet NOx sensors.Type: ApplicationFiled: September 19, 2017Publication date: January 4, 2018Applicant: Cummins, Inc.Inventors: Andrew W. Osburn, Christopher Ferguson, Tony James Hall, Brian P. Liimatta
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Patent number: 9850796Abstract: An apparatus includes a dosing module structured to suspend dosing in an exhaust aftertreatment system; a selective catalytic reduction (SCR) inlet NOx module structured to interpret SCR inlet NOx data and an SCR inlet temperature; a SCR outlet NOx module structured to interpret SCR outlet NOx data; and a system diagnostic module structured to determine an efficiency of a SCR system based on the SCR inlet and outlet NOx data over a range of SCR temperatures, wherein the system diagnostic module is further structured to determine a state of at least one of a diesel oxidation catalyst (DOC), a diesel particulate filter (DPF), and the SCR system based on the SCR efficiency at an elevated SCR temperature range and the SCR efficiency at a relatively lower SCR temperature range relative to a high SCR efficiency threshold and a low SCR efficiency threshold.Type: GrantFiled: July 22, 2016Date of Patent: December 26, 2017Assignee: Cummins, Inc.Inventors: Andrew W. Osburn, Mark N. Bays, Krishna Kamasamudram, Aleksey Yezerets
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Patent number: 9784166Abstract: A method for diagnosing NOx sensors in an exhaust aftertreatment system includes suspending reductant dosing in an exhaust aftertreatment system; purging a reductant deposit in a selective catalytic reduction (SCR) system of the exhaust aftertreatment system; adjusting at least one of an ignition timing and an engine speed for an engine to adjust an engine out nitrogen oxide (NOx) amount; receiving measured SCR inlet NOx data from a SCR inlet NOx sensor and measured SCR outlet NOx data from a SCR outlet NOx sensor; determining a phase shift between the measured SCR inlet and SCR outlet NOx data; applying the determined phase shift to the SCR outlet NOx data; and determining a diagnostic feature based on the SCR inlet NOx data and the phase shifted SCR outlet NOx data regarding a state of the SCR inlet and outlet NOx sensors.Type: GrantFiled: December 30, 2014Date of Patent: October 10, 2017Assignee: Cummins Inc.Inventors: Andrew W. Osburn, Christopher Ferguson, Tony James Hall, Brian P. Liimatta
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Patent number: 9724685Abstract: There is disclosed method and systems for charging a depleted or spent solid storage media with gaseous ammonia.Type: GrantFiled: May 28, 2014Date of Patent: August 8, 2017Assignee: Cummins Inc.Inventors: Aleksey Yezerets, Neal W. Currier, Timothy R. Frazier, Andrew W. Osburn, Krishna Kamasamudram
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Publication number: 20170037758Abstract: An exemplary method includes determining an NH3 reference target in an exhaust conduit between a first SCR catalyst and a second SCR catalyst. The method includes determining a present amount of NH3 in the exhaust conduit between the first SCR catalyst and the second SCR catalyst, and determining an NH3 error term in response to the NH3 reference target and the present amount of NH3. The method further includes determining an amount of NOx downstream of the second SCR catalyst, and adjusting one of the NH3 reference target and a reductant doser command in response to the amount of NOx downstream of the second SCR catalyst. The method further includes providing a reductant doser command in response to the NH3 error term.Type: ApplicationFiled: October 20, 2016Publication date: February 9, 2017Inventors: Mert Geveci, Andrew W. Osburn
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Publication number: 20160326928Abstract: An apparatus includes a dosing module structured to suspend dosing in an exhaust aftertreatment system; a selective catalytic reduction (SCR) inlet NOx module structured to interpret SCR inlet NOx data and an SCR inlet temperature; a SCR outlet NOx module structured to interpret SCR outlet NOx data; and a system diagnostic module structured to determine an efficiency of a SCR system based on the SCR inlet and outlet NOx data over a range of SCR temperatures, wherein the system diagnostic module is further structured to determine a state of at least one of a diesel oxidation catalyst (DOC), a diesel particulate filter (DPF), and the SCR system based on the SCR efficiency at an elevated SCR temperature range and the SCR efficiency at a relatively lower SCR temperature range relative to a high SCR efficiency threshold and a low SCR efficiency threshold.Type: ApplicationFiled: July 22, 2016Publication date: November 10, 2016Applicant: Cummins, Inc.Inventors: Andrew W. Osburn, Mark N. Bays, Krishna Kamasamudram, Aleksey Yezerets
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Patent number: 9476338Abstract: An exemplary method includes determining an NH3 reference target in an exhaust conduit between a first SCR catalyst and a second SCR catalyst. The method includes determining a present amount of NH3 in the exhaust conduit between the first SCR catalyst and the second SCR catalyst, and determining an NH3 error term in response to the NH3 reference target and the present amount of NH3. The method further includes determining an amount of NOx downstream of the second SCR catalyst, and adjusting one of the NH3 reference target and a reductant doser command in response to the amount of NOx downstream of the second SCR catalyst. The method further includes providing a reductant doser command in response to the NH3 error term.Type: GrantFiled: April 29, 2011Date of Patent: October 25, 2016Assignee: Cummins Inc.Inventors: Mert Geveci, Andrew W. Osburn
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Patent number: 9429062Abstract: An example method includes interpreting an NH3 composition value at a position upstream of a selective reduction catalyst (SCR) element fluidly disposed in the exhaust conduit of an engine, interpreting a NOx composition value at a position downstream of the SCR element, and determining an NH3 sensor rationality threshold in response to the upstream NH3 composition value. The method further includes determining an NH3 sensor health value as indicating a sensor failure in response to the downstream NOx composition value exceeding the NH3 sensor rationality threshold.Type: GrantFiled: September 8, 2014Date of Patent: August 30, 2016Assignee: Cummins Inc.Inventors: Andrew W. Osburn, Feng Liu, Mert Geveci
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Publication number: 20160245208Abstract: Unique apparatuses, methods, and systems including engine-out emissions controls are disclosed. One embodiment is a system including an internal combustion engine system including at least one fueling actuator and at least one air handling actuator and an electronic controller.Type: ApplicationFiled: May 3, 2016Publication date: August 25, 2016Inventors: Phanindra V. Garimella, Andrew W. Osburn, Ming-Feng Hsieh