Patents by Inventor Kristopher R. Bare
Kristopher R. Bare 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: 11970991Abstract: A method includes: initiating a low engine-out NOx (LEON) mode by controlling a component of a vehicle having an aftertreatment system to decrease an instantaneous engine-out NOx (EONOx) amount; comparing a temperature of the aftertreatment system during the LEON mode to a warm-operation threshold temperature; responsive to determining that the temperature of the aftertreatment system exceeds the warm-operation threshold temperature, disengaging the LEON mode; responsive to determining that the temperature of the aftertreatment system is below the warm-up operation threshold temperature, comparing information indicative of an operating status of the vehicle to a LEON exit threshold; and disengaging the LEON mode responsive to determining that the information indicative of the operating status of the vehicle during the LEON mode exceeds the LEON exit threshold.Type: GrantFiled: December 5, 2022Date of Patent: April 30, 2024Assignees: Cummins Inc., Scania CV ABInventors: Janardhan Kodavasal, Ved Merchant, Agneya Turlapati, Kristopher R. Bare
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Patent number: 11920506Abstract: A system includes a first heater positioned in or proximate to an exhaust aftertreatment system in exhaust gas-receiving communication with an engine, a second heater positioned downstream of the first heater, and a controller coupled to the first and second heaters. The controller is structured to activate the second heater in response to determining that a compound deposit is likely present.Type: GrantFiled: May 23, 2022Date of Patent: March 5, 2024Assignee: Cummins Inc.Inventors: Kristopher R. Bare, Xing Jin, Jennifer Kay Light-Holets, Sriram S. Popuri, Xiaobo Song
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Publication number: 20240026808Abstract: A system includes an exhaust aftertreatment system coupled to an engine, and a controller including at least one processor coupled to at least one memory device storing instructions that, when executed by the at least one processor, cause the controller to perform certain operations. The operations include estimating an aging of the exhaust aftertreatment system, and adjusting at least one of an entry temperature threshold or an exit temperature threshold for a thermal management mode for the exhaust aftertreatment system based on the aging of the exhaust aftertreatment system.Type: ApplicationFiled: December 8, 2021Publication date: January 25, 2024Applicant: Cummins Inc.Inventors: Kristopher R. Bare, Michael J. Cunningham, Jennifer Kay Light-Holets, Xiaobo Song, Agneya Turlapati
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Patent number: 11814995Abstract: A recycling loop configuration of an exhaust gas aftertreatment system decreases a level of system-out NOx emissions of an engine. An apparatus including the configuration has an exhaust gas recycling system having a closed gas recycling loop system configured to heat gas circulating within the loop, and a blower for circulating gas within the loop. A method for operating the engine includes preheating at least one aftertreatment component of an exhaust gas aftertreatment system of the engine by exposing the component to heated gas circulating in a closed gas recycling loop.Type: GrantFiled: May 16, 2022Date of Patent: November 14, 2023Assignee: Cummins Inc.Inventors: Kunlun Liu, Xiaobo Song, Xing Jin, Kristopher R. Bare, Sriram S. Popuri, Scott Robert Bardakjy, Agneya Turlapati
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Patent number: 11713035Abstract: A powertrain system includes an engine coupled to a turbocharger and a timer, a motor generator coupled to the engine and a battery, and a controller. The controller is structured to receive data indicative of a state of charge from the battery, determine whether the state of charge is at or below a high predefined threshold, modulate control on the engine and the timer in response to determining the state of charge is above the high predefined threshold, determine whether the state of charge is above a low predefined threshold in response to the state of charge being at or below the high predefined threshold, and modulate control of the engine and the timer in response to determining the state of charge is at or below the low predefined threshold.Type: GrantFiled: September 1, 2020Date of Patent: August 1, 2023Assignee: Cummins Inc.Inventors: Sriram S. Popuri, Adrian P. Dale, Kristopher R. Bare, Xing Jin
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Publication number: 20230086566Abstract: A method includes: initiating a low engine-out NOx (LEON) mode by controlling a component of a vehicle having an aftertreatment system to decrease an instantaneous engine-out NOx (EONOx) amount; comparing a temperature of the aftertreatment system during the LEON mode to a warm-operation threshold temperature; responsive to determining that the temperature of the aftertreatment system exceeds the warm-operation threshold temperature, disengaging the LEON mode; responsive to determining that the temperature of the aftertreatment system is below the warm-up operation threshold temperature, comparing information indicative of an operating status of the vehicle to a LEON exit threshold; and disengaging the LEON mode responsive to determining that the information indicative of the operating status of the vehicle during the LEON mode exceeds the LEON exit threshold.Type: ApplicationFiled: December 5, 2022Publication date: March 23, 2023Applicant: Cummins Inc.Inventors: Janardhan Kodavasal, Ved Merchant, Agneya Turlapati, Kristopher R. Bare
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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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Patent number: 11519350Abstract: A method comprises determining that an aftertreatment system is in a cold-operation mode; initiating a low engine-out NOx (LEON) mode by controlling a component of a vehicle containing the aftertreatment system to decrease an instantaneous engine out NOx (EONOx) amount and to increase exhaust energy relative to a normal operation mode for an engine of the vehicle; receiving information indicative of an operating status of the vehicle during the LEON mode; disengaging the LEON mode; subsequent to disengaging the LEON mode, initiating a thermal management (TM) mode for the aftertreatment system, wherein the TM mode is initiated by controlling a component of the vehicle to increase fueling to the engine for a power level by reducing engine efficiency and directing excess fuel to the aftertreatment system; receiving information indicative of an operating status of the vehicle during the TM mode; and disengaging the TM mode.Type: GrantFiled: December 7, 2021Date of Patent: December 6, 2022Assignee: Cummins Inc.Inventors: Janardhan Kodavasal, Ved Merchant, Agneya Turlapati, Kristopher R. Bare
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Publication number: 20220372926Abstract: A system and method of controlling operation of an internal combustion engine are provided. The method includes performing a cylinder deactivation operation while running the engine, selecting at least one of the plurality of temperature maintenance actions to increase an exhaust temperature, and performing at least one of the plurality of temperature maintenance actions effective to increase the exhaust temperature. The plurality of temperature maintenance actions may include one or more of a charge air cooler bypass operation, an EGR cooler bypass operation, an aftertreatment system heater operation, a turbocharger bypass operation, a turbocharger geometry adjustment operation, an intake air throttle adjustment operation, and a delayed injection timing operation, or combinations thereof.Type: ApplicationFiled: August 3, 2022Publication date: November 24, 2022Applicant: Cummins Inc.Inventors: Aaron William Beinborn, Lyle E. Kocher, J. Steven Kolhouse, Suk-Min Moon, Sriram S. Popuri, Janardhan Kodavasal, Ved Merchant, Kristopher R. Bare, Avra Brahma
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Publication number: 20220290594Abstract: A recycling loop configuration of an exhaust gas aftertreatment system decreases a level of system-out NOx emissions of an engine. An apparatus including the configuration has an exhaust gas recycling system having a closed gas recycling loop system configured to heat gas circulating within the loop, and a blower for circulating gas within the loop. A method for operating the engine includes preheating at least one aftertreatment component of an exhaust gas aftertreatment system of the engine by exposing the component to heated gas circulating in a closed gas recycling loop.Type: ApplicationFiled: May 16, 2022Publication date: September 15, 2022Inventors: Kunlun Liu, Xiaobo Song, Xing Jin, Kristopher R. Bare, Sriram S. Popuri, Scott Robert Bardakjy, Agneya Turlapati
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Publication number: 20220282654Abstract: A system includes a first heater positioned in or proximate to an exhaust aftertreatment system in exhaust gas-receiving communication with an engine, a second heater positioned downstream of the first heater, and a controller coupled to the first and second heaters. The controller is structured to activate the second heater in response to determining that a compound deposit is likely present.Type: ApplicationFiled: May 23, 2022Publication date: September 8, 2022Applicant: Cummins Inc.Inventors: Kristopher R. Bare, Xing Jin, Jennifer Kay Light-Holets, Sriram S. Popuri, Xiaobo Song
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Publication number: 20220178320Abstract: A method comprises determining that an aftertreatment system is in a cold-operation mode; initiating a low engine-out NOx (LEON) mode by controlling a component of a vehicle containing the aftertreatment system to decrease an instantaneous engine out NOx (EONOx) amount and to increase exhaust energy relative to a normal operation mode for an engine of the vehicle; receiving information indicative of an operating status of the vehicle during the LEON mode; disengaging the LEON mode; subsequent to disengaging the LEON mode, initiating a thermal management (TM) mode for the aftertreatment system, wherein the TM mode is initiated by controlling a component of the vehicle to increase fueling to the engine for a power level by reducing engine efficiency and directing excess fuel to the aftertreatment system; receiving information indicative of an operating status of the vehicle during the TM mode; and disengaging the TM mode.Type: ApplicationFiled: December 7, 2021Publication date: June 9, 2022Inventors: Janardhan Kodavasal, Ved Merchant, Agneya Turlapati, Kristopher R. Bare
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Patent number: 11339698Abstract: A system includes a first heater positioned in or proximate to an exhaust aftertreatment system in exhaust gas-receiving communication with an engine, a second heater positioned downstream of the first heater, and a controller coupled to the first and second heaters. The controller is structured to determine, based on information indicative of a temperature regarding the exhaust aftertreatment system, that the temperature is below a temperature threshold; receive information regarding a characteristic of a battery coupled to the first heater and the second heater; control the temperature regarding the exhaust aftertreatment system without using the first or second heaters in response to determining that the characteristic of the battery is below a first threshold; and control a temperature regarding the exhaust aftertreatment system using the first heater in response to determining that the characteristic of the battery is above the first threshold but below a second threshold.Type: GrantFiled: May 27, 2020Date of Patent: May 24, 2022Assignee: Cummins Inc.Inventors: Kristopher R. Bare, Xing Jin, Jennifer Kay Light-Holets, Sriram S. Popuri, Xiaobo Song
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Publication number: 20220063584Abstract: A powertrain system includes an engine coupled to a turbocharger and a timer, a motor generator coupled to the engine and a battery, and a controller. The controller is structured to receive data indicative of a state of charge from the battery, determine whether the state of charge is at or below a high predefined threshold, modulate control on the engine and the timer in response to determining the state of charge is above the high predefined threshold, determine whether the state of charge is above a low predefined threshold in response to the state of charge being at or below the high predefined threshold, and modulate control of the engine and the timer in response to determining the state of charge is at or below the low predefined threshold.Type: ApplicationFiled: September 1, 2020Publication date: March 3, 2022Applicant: CUMMINS INC.Inventors: Sriram S. Popuri, Adrian P. Dale, Kristopher R. Bare, Xing Jin
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Publication number: 20210372310Abstract: A system includes a first heater positioned in or proximate to an exhaust aftertreatment system in exhaust gas-receiving communication with an engine, a second heater positioned downstream of the first heater, and a controller coupled to the first and second heaters. The controller is structured to determine, based on information indicative of a temperature regarding the exhaust aftertreatment system, that the temperature is below a temperature threshold; receive information regarding a characteristic of a battery coupled to the first heater and the second heater; control the temperature regarding the exhaust aftertreatment system without using the first or second heaters in response to determining that the characteristic of the battery is below a first threshold; and control a temperature regarding the exhaust aftertreatment system using the first heater in response to determining that the characteristic of the battery is above the first threshold but below a second threshold.Type: ApplicationFiled: May 27, 2020Publication date: December 2, 2021Inventors: Kristopher R. Bare, Xing Jin, Jennifer Kay Light-Holets, Sriram S. Popuri, Xiaobo Song
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Patent number: 8915720Abstract: An integrated fan and pump drive system.Type: GrantFiled: January 29, 2008Date of Patent: December 23, 2014Assignee: Cummins Inc.Inventors: Bhavin Parikah, Kristopher R. Bare
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Patent number: 7845339Abstract: A cooling system for an engine is disclosed. In a first embodiment, the cooling system may comprise a heat exchanger, a pump coupled to the heat exchanger, an EGR cooler coupled to the pump, and a first valve coupled to the EGR cooler and the heat exchanger. When the first valve is in a first position, the first valve directs a coolant to the heat exchanger and when the first valve is in a second position, the heat exchanger is bypassed and coolant flows directly to the pump. It is an advantage for a cooling system to utilize a valve to maximize the rate a coolant flows throughout the system when the valve is in an open position and also to warm up an engine when the valve is in a closed position.Type: GrantFiled: December 16, 2008Date of Patent: December 7, 2010Assignee: Cummins Intellectual Properties, Inc.Inventors: Adam C. Cecil, Kristopher R. Bare
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Publication number: 20100147272Abstract: A cooling system for an engine is disclosed. In a first embodiment, the cooling system may comprise a heat exchanger, a pump coupled to the heat exchanger, an EGR cooler coupled to the pump, and a first valve coupled to the EGR cooler and the heat exchanger. When the first valve is in a first position, the first valve directs a coolant to the heat exchanger and when the first valve is in a second position, the heat exchanger is bypassed and coolant flows directly to the pump. It is an advantage for a cooling system to utilize a valve to maximize the rate a coolant flows throughout the system when the valve is in an open position and also to warm up an engine when the valve is in a closed position.Type: ApplicationFiled: December 16, 2008Publication date: June 17, 2010Applicant: CUMMINS INC.Inventors: ADAM C. CECIL, KRISTOPHER R. BARE
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Publication number: 20090169400Abstract: An integrated fan and pump drive system.Type: ApplicationFiled: January 29, 2008Publication date: July 2, 2009Applicant: CUMMINS, INC.Inventors: Bhavin Paarikh, Kristopher R. Bare
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Patent number: 7240643Abstract: An internal combustion engine includes an engine block having an oil rifle. A cylinder liner carried by the engine block includes a bottom end. A piston cooling nozzle coupled with the engine block includes an inlet in communication with the oil rifle, a tube, and a bracket coupled with the tube. The bracket engages the bottom end of the cylinder liner.Type: GrantFiled: April 13, 2006Date of Patent: July 10, 2007Assignee: Cummins, Inc.Inventors: Andrew P. Perr, Kristopher R. Bare, Marcus M. Chui