Patents by Inventor Chetan Ponnathpur
Chetan Ponnathpur 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: 20230278462Abstract: Computer-implemented technology for identifying or determining potentially damaged batteries in an electrical machine system, and for discharging the potentially damaged batteries. Embodiments include determining potentially damaged batteries by monitoring and determining information representative of one or more electrical or mechanical or thermal conditions of the batteries. The conditions may include isolation faults internal to the batteries, isolation faults external to the batteries, liquid or other contamination of the batteries, and other parameters such as out-of-specification temperatures, pressures, voltages and current levels of the batteries. Embodiments include determining whether to discharge potentially damaged batteries based on one or more of the electrical or mechanical or thermal conditions of the damaged batteries.Type: ApplicationFiled: February 17, 2023Publication date: September 7, 2023Inventors: Mark N. Bays, Chetan Ponnathpur
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Publication number: 20230241996Abstract: The present disclosure provides systems and methods for charging multiple electric vehicles. In particular, the present disclosure provides a system having a single charger configured to connect with a plurality of electric vehicles and methods for charging one or more electric vehicles using said system. The present disclosure further provides a method for bidirectional current flow between the grid and the one or more electric vehicles.Type: ApplicationFiled: January 31, 2023Publication date: August 3, 2023Inventors: Mark N. Bays, Chetan Ponnathpur, Erik L. Piper, John P. O'Brien, Joseph E. Paquette, Dilip Ramachandran, Omkar A. Harshe, Ravikanth Pulipaka, John K. Heichelbech
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Publication number: 20210079825Abstract: An inline reductant filter assembly includes a filter housing, a filter media, and one or more valves. The filter housing is fluidly coupled to an upstream portion of a reductant line and a downstream portion of the reductant line. The filter media is positioned in the filter housing. The one or more valves are selectively movable from a first position to a second position. In the first position, the one or more valves permit fluid to flow along a first fluid flow path from the upstream portion of the reductant line, through the filter media, to the downstream portion of the reductant line. In the second position, the one or more valves prevent fluid from flowing along the first fluid flow path through the filter media.Type: ApplicationFiled: August 29, 2018Publication date: March 18, 2021Applicant: CUMMINS EMISSION SOLUTIONS INC.Inventors: Chetan Ponnathpur, Tushar Tej Dandu
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Patent number: 10801385Abstract: A system may include a NOx sensor and a controller. The controller may be configured to interpret a value of a first parameter indicative of an amount of NOx measured by the NOx sensor and interpret a value of a second parameter for a NOx value from a look-up table. The controller may be further configured to determine a correction factor based on the value of the first parameter and the value of the second parameter and generate a dosing command based, at least in part, on the determined correction factor. In some implementations, the NOx value from the look-up table may be based on one or more operating conditions of an engine. In some implementations, the controller may be further configured to update a NOx value of the look-up table based on the determined correction factor.Type: GrantFiled: June 16, 2016Date of Patent: October 13, 2020Assignee: Cummins Emission Solutions Inc.Inventors: Chetan Ponnathpur, Sarang S. Sonawane
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Patent number: 9938875Abstract: Apparatuses and methods for urea dosing of an exhaust after treatment system are disclosed. Exemplary apparatuses include a chamber configured to receive pressurized gas at a first inlet, receive urea solution at a second inlet and provide a combined flow of pressurized gas and urea to an outlet, flow passage extending from the first inlet to a seating surface, and a valve member configured to move between an open position in which the valve member is spaced apart from the seating surface and a closed position in which the valve member contacts the seating surface. As the valve member moves from the open position to the closed position, the valve member contacts the seating surface at a first location and wipes an area of the seating surface extending from the first location in a direction toward the flow passage.Type: GrantFiled: July 19, 2016Date of Patent: April 10, 2018Assignee: CUMMINS EMISSION SOLUTIONS, INC.Inventors: Andrew Myer, Chetan Ponnathpur, John Heichelbech, George Muntean, Stephen Holl, James F. Burke, John Anthis, Joydeep Chakrabarti, Brandon Simmons, Niklas Schmidt, Yogesh V. Birari
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Publication number: 20160369677Abstract: A system may include a NOx sensor and a controller. The controller may be configured to interpret a value of a first parameter indicative of an amount of NOx measured by the NOx sensor and interpret a value of a second parameter for a NOx value from a look-up table. The controller may be further configured to determine a correction factor based on the value of the first parameter and the value of the second parameter and generate a dosing command based, at least in part, on the determined correction factor. In some implementations, the NOx value from the look-up table may be based on one or more operating conditions of an engine. In some implementations, the controller may be further configured to update a NOx value of the look-up table based on the determined correction factor.Type: ApplicationFiled: June 16, 2016Publication date: December 22, 2016Applicant: Cummins Emission Solutions Inc.Inventors: Chetan Ponnathpur, Sarang S. Sonawane
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Publication number: 20160326929Abstract: Apparatuses and methods for urea dosing of an exhaust after treatment system are disclosed. Exemplary apparatuses include a chamber configured to receive pressurized gas at a first inlet, receive urea solution at a second inlet and provide a combined flow of pressurized gas and urea to an outlet, flow passage extending from the first inlet to a seating surface, and a valve member configured to move between an open position in which the valve member is spaced apart from the seating surface and a closed position in which the valve member contacts the seating surface. As the valve member moves from the open position to the closed position, the valve member contacts the seating surface at a first location and wipes an area of the seating surface extending from the first location in a direction toward the flow passage.Type: ApplicationFiled: July 19, 2016Publication date: November 10, 2016Applicant: Cummins Emission Solutions, Inc.Inventors: Andrew Myer, Chetan Ponnathpur, John Heichelbech, George Muntean, Stephen Holl, James F. Burke, John Anthis, Joydeep Chakrabarti, Brandon Simmons, Niklas Schmidt, Yogesh V. Birari
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Patent number: 9422850Abstract: Apparatuses and methods for urea dosing of an exhaust after treatment system are disclosed. Exemplary apparatuses include a chamber configured to receive pressurized gas at a first inlet, receive urea solution at a second inlet, and provide a combined flow of pressurized gas and urea to an outlet, a flow passage extending from the first inlet to a seating surface, and a valve member configured to move between an open position in which the valve member is spaced apart from the seating surface and a closed position in which the valve member contacts the seating surface. As the valve member moves from the open position to the closed position the valve member contacts the seating surface at a first location and wipes an area of the seating surface extending from the first location in a direction toward the flow passage.Type: GrantFiled: August 22, 2012Date of Patent: August 23, 2016Assignee: Cummins Emission Solutions, Inc.Inventors: Andrew Myer, Chetan Ponnathpur, John Heichelbech, George Muntean, Stephen Holl, James F. Burke, John Anthis, Joydeep Chakrabarti, Brandon Simmons, Niklas Schmidt, Yogesh V. Birari
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Patent number: 9206723Abstract: A system includes an internal combustion engine producing an exhaust gas, an aftertreatment system receiving the exhaust gas, the aftertreatment system including a particulate filter positioned upstream of an SCR catalyst component, and a urea injector operatively coupled to the aftertreatment system at a position upstream of the SCR catalyst component. The system further includes a controller that interprets an exhaust temperature value, an ambient temperature value, and a urea injection amount. The controller determines a urea deposit amount in response to the exhaust temperature value, the ambient temperature value, and the urea injection amount, and initiates a desoot regeneration event in response to the urea deposit amount. The desoot regeneration event includes operating the engine at a urea decomposition exhaust temperature.Type: GrantFiled: December 26, 2013Date of Patent: December 8, 2015Assignee: CUMMINS EMISSION SOLUTIONS INC.Inventor: Chetan Ponnathpur
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Publication number: 20150027553Abstract: Apparatuses and methods for urea dosing of an exhaust after treatment system are disclosed. Exemplary apparatuses include a chamber configured to receive pressurized gas at a first inlet, receive urea solution at a second inlet, and provide a combined flow of pressurized gas and urea to an outlet, a flow passage extending from the first inlet to a seating surface, and a valve member configured to move between an open position in which the valve member is spaced apart from the seating surface and a closed position in which the valve member contacts the seating surface. As the valve member moves from the open position to the closed position the valve member contacts the seating surface at a first location and wipes an area of the seating surface extending from the first location in a direction toward the flow passage.Type: ApplicationFiled: August 22, 2012Publication date: January 29, 2015Inventors: Andrew Myer, Chetan Ponnathpur, John Heichelbech, George Muntean, Stephen Holl, James F. Burke, John Anthis, Joydeep Chakrabarti, Brandon Simmons
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Patent number: 8888017Abstract: A system includes a cylindrical blend chamber having two inlets and one outlet. The outlet is fluidly coupled to a transfer line, and a nozzle is positioned downstream of the transfer line. The nozzle is fluidly coupled to an exhaust stream of an internal combustion engine. The system further includes a first inlet fluidly coupled to a diesel exhaust fluid (DEF) stream, and a second inlet fluidly coupled to an air stream. The DEF stream and the air stream intersect at a divergent angle.Type: GrantFiled: September 23, 2011Date of Patent: November 18, 2014Assignee: Cummins Inc.Inventors: Chetan Ponnathpur, Stephanie L. Apewokin, Steve Holl, Jim F. Burke, John Heichelbech, Andrew Myer, Melissa A. Zaczek, Yongquan Chai, Eric Burmeister, Nate Garrett
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Patent number: 8826644Abstract: A method of controlling an internal combustion engine and exhaust system having an SCR, and engine and exhaust system including an SCR, described herein, monitors, in real time, NOx conversion efficiency of an exhaust flow output by the internal combustion engine through the SCR. A determination is made as to whether the monitored NOx conversion efficiency exceeds a predetermined target conversion efficiency, such as a target based on a predetermined allowable amount of NOx emission. While the monitored NOx conversion efficiency exceeds the predetermined amount, the NOx concentration level in the exhaust flow is increased by an amount based on the difference in the monitored conversion efficiency and the predetermined target conversion efficiency.Type: GrantFiled: January 3, 2011Date of Patent: September 9, 2014Assignee: Cummins Intellectual Properties, Inc.Inventor: Chetan Ponnathpur
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Publication number: 20140102080Abstract: A system includes an internal combustion engine producing an exhaust gas, an aftertreatment system receiving the exhaust gas, the aftertreatment system including a particulate filter positioned upstream of an SCR catalyst component, and a urea injector operatively coupled to the aftertreatment system at a position upstream of the SCR catalyst component. The system further includes a controller that interprets an exhaust temperature value, an ambient temperature value, and a urea injection amount. The controller determines a urea deposit amount in response to the exhaust temperature value, the ambient temperature value, and the urea injection amount, and initiates a desoot regeneration event in response to the urea deposit amount. The desoot regeneration event includes operating the engine at a urea decomposition exhaust temperature.Type: ApplicationFiled: December 26, 2013Publication date: April 17, 2014Inventor: Chetan Ponnathpur
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Patent number: 8627651Abstract: A system includes an internal combustion engine producing an exhaust gas, an aftertreatment system receiving the exhaust gas, the aftertreatment system including a particulate filter positioned upstream of an SCR catalyst component, and a urea injector operatively coupled to the aftertreatment system at a position upstream of the SCR catalyst component. The system further includes a controller that interprets an exhaust temperature value, an ambient temperature value, and a urea injection amount. The controller determines a urea deposit amount in response to the exhaust temperature value, the ambient temperature value, and the urea injection amount, and initiates a desoot regeneration event in response to the urea deposit amount. The desoot regeneration event includes operating the engine at a urea decomposition exhaust temperature.Type: GrantFiled: August 5, 2011Date of Patent: January 14, 2014Assignee: Cummins Emission Solutions, Inc.Inventor: Chetan Ponnathpur
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Publication number: 20130031891Abstract: A system includes an internal combustion engine producing an exhaust gas, an aftertreatment system receiving the exhaust gas, the aftertreatment system including a particulate filter positioned upstream of an SCR catalyst component, and a urea injector operatively coupled to the aftertreatment system at a position upstream of the SCR catalyst component. The system further includes a controller that interprets an exhaust temperature value, an ambient temperature value, and a urea injection amount. The controller determines a urea deposit amount in response to the exhaust temperature value, the ambient temperature value, and the urea injection amount, and initiates a desoot regeneration event in response to the urea deposit amount. The desoot regeneration event includes operating the engine at a urea decomposition exhaust temperature.Type: ApplicationFiled: August 5, 2011Publication date: February 7, 2013Inventor: Chetan Ponnathpur
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Publication number: 20120160934Abstract: A system includes a cylindrical blend chamber having two inlets and one outlet. The outlet is fluidly coupled to a transfer line, and a nozzle is positioned downstream of the transfer line. The nozzle is fluidly coupled to an exhaust stream of an internal combustion engine. The system further includes a first inlet fluidly coupled to a diesel exhaust fluid (DEF) stream, and a second inlet fluidly coupled to an air stream. The DEF stream and the air stream intersect at a divergent angle.Type: ApplicationFiled: September 23, 2011Publication date: June 28, 2012Inventors: Chetan Ponnathpur, Stephanie L. Apewokin, Steve Holl, Jim F. Burke, John Heichelbech, Andrew Myer, Melissa A. Zaczek, Yongquan Chai, Eric Burmester, Nate Garrett
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Patent number: 8141351Abstract: A pre-catalyst device configured to be disposed upstream of a main aftertreatment device of an engine exhaust system. An oxidizing material is disposed on an inlet face of the pre-catalyst device, where the oxidizing material is configured to oxidize engine exhaust before the engine exhaust reaches the main aftertreatment device of the engine exhaust system.Type: GrantFiled: April 25, 2008Date of Patent: March 27, 2012Assignee: Cummins Filtration IP, Inc.Inventors: Chetan Ponnathpur, Thomas M. Yonushonis, Javier Franco
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Publication number: 20110162350Abstract: A method of controlling an internal combustion engine and exhaust system having an SCR, and engine and exhaust system including an SCR, described herein, monitors, in real time, NOx conversion efficiency of an exhaust flow output by the internal combustion engine through the SCR. A determination is made as to whether the monitored NOx conversion efficiency exceeds a predetermined target conversion efficiency, such as a target based on a predetermined allowable amount of NOx emission. While the monitored NOx conversion efficiency exceeds the predetermined amount, the NOx concentration level in the exhaust flow is increased by an amount based on the difference in the monitored conversion efficiency and the predetermined target conversion efficiency.Type: ApplicationFiled: January 3, 2011Publication date: July 7, 2011Applicant: CUMMINS INTELLECTUAL PROPERTIES, INC.Inventor: Chetan PONNATHPUR
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Publication number: 20090266062Abstract: A pre-catalyst device configured to be disposed upstream of a main aftertreatment device of an engine exhaust system. An oxidizing material is disposed on an inlet face of the pre-catalyst device, where the oxidizing material is configured to oxidize engine exhaust before the engine exhaust reaches the main aftertreatment device of the engine exhaust system.Type: ApplicationFiled: April 25, 2008Publication date: October 29, 2009Applicant: CUMMINS FILTRATION IP, INC.Inventors: Chetan PONNATHPUR, Thomas M. YONUSHONIS, Javier FRANCO