Patents by Inventor Vaibhav Daramwar
Vaibhav Daramwar 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: 20230296041Abstract: A method includes: receiving an inlet temperature of a selective catalytic reduction system; comparing the inlet temperature to a temperature setpoint; and adjusting at least one of a first exhaust manifold pressure setpoint for a first cylinder bank of an engine or a second exhaust manifold pressure setpoint for a second cylinder bank of the engine, based on the comparison.Type: ApplicationFiled: May 24, 2023Publication date: September 21, 2023Applicant: CUMMINS INC.Inventors: Travis Alva Anderson, Joan M. Wills, Rajkumar Subramanian, Vaibhav Daramwar, Pagalavan Mathari Bakthavatsalam, Paul Daniel Borisuk
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Patent number: 11692472Abstract: A method includes: determining that at least one cylinder of a first cylinder bank of an engine is active; determining that at least one cylinder of a second cylinder bank of the engine is inactive; receiving an inlet temperature of a selective catalytic reduction system; comparing the inlet temperature to a temperature setpoint; and adjusting at least one of a first exhaust manifold pressure setpoint for the first cylinder bank or a second exhaust manifold pressure setpoint for the second cylinder bank based on the comparison.Type: GrantFiled: October 14, 2022Date of Patent: July 4, 2023Assignee: Cummins Inc.Inventors: Travis Alva Anderson, Joan M. Wills, Rajkumar Subramanian, Vaibhav Daramwar, Pagalavan Mathari Bakthavatsalam, Paul Daniel Borisuk
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Publication number: 20230035148Abstract: A method includes: determining that at least one cylinder of a first cylinder bank of an engine is active; determining that at least one cylinder of a second cylinder bank of the engine is inactive; receiving an inlet temperature of a selective catalytic reduction system; comparing the inlet temperature to a temperature setpoint; and adjusting at least one of a first exhaust manifold pressure setpoint for the first cylinder bank or a second exhaust manifold pressure setpoint for the second cylinder bank based on the comparison.Type: ApplicationFiled: October 14, 2022Publication date: February 2, 2023Applicant: Cummins, Inc.Inventors: Travis Alva Anderson, Joan M. Wills, Rajkumar Subramanian, Vaibhav Daramwar, Pagalavan Mathari Bakthavatsalam, Paul Daniel Borisuk
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Patent number: 11473469Abstract: Systems, methods, and apparatuses are provided for increasing exhaust gas temperature. A system includes a valve and a controller coupled to the valve. The controller is structured to determine that a plurality of cylinders of an engine are active; compare an exhaust aftertreatment temperature to an exhaust aftertreatment temperature setpoint; and in response to the comparison, adjust an effective flow area for exhaust gas from the plurality of cylinders of the engine to increase an exhaust gas temperature.Type: GrantFiled: May 3, 2021Date of Patent: October 18, 2022Assignee: Cummins, Inc.Inventors: Travis Alva Anderson, Joan M. Wills, Rajkumar Subramanian, Vaibhav Daramwar, Pagalavan Mathari Bakthavatsalam, Paul Daniel Borisuk
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Publication number: 20210254530Abstract: Systems, methods, and apparatuses are provided for increasing exhaust gas temperature. A system includes a valve and a controller coupled to the valve. The controller is structured to determine that a plurality of cylinders of an engine are active; compare an exhaust aftertreatment temperature to an exhaust aftertreatment temperature setpoint; and in response to the comparison, adjust an effective flow area for exhaust gas from the plurality of cylinders of the engine to increase an exhaust gas temperature.Type: ApplicationFiled: May 3, 2021Publication date: August 19, 2021Applicant: Cummins, Inc.Inventors: Travis Alva Anderson, Joan M. Wills, Rajkumar Subramanian, Vaibhav Daramwar, Pagalavan Mathari Bakthavatsalam, Paul Daniel Borisuk
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Patent number: 10995642Abstract: Systems, methods, and apparatuses are provided for increasing exhaust gas temperature. A system includes a valve and a controller coupled to the valve. The controller is structured to determine that an exhaust manifold pressure does not meet an exhaust manifold pressure setpoint and in response, cause an adjustment of an effective flow area of exhaust gas from an engine. The adjustment of the effective flow area is structured to increase an exhaust gas temperature.Type: GrantFiled: May 10, 2019Date of Patent: May 4, 2021Assignee: Cummins Inc.Inventors: Travis Alva Anderson, Joan M. Wills, Rajkumar Subramanian, Vaibhav Daramwar, Pagalavan Mathari Bakthavatsalam, Paul Daniel Borisuk
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Patent number: 10480377Abstract: A system and method are disclosed for improving the performance of an aftertreatment system by elevating its temperature above an activation temperature. According to at least one aspect of the present disclosure, the method includes injecting a quantity of a fuel into certain fueled cylinders of a plurality of combustion cylinders of an internal combustion engine, the plurality of combustion cylinders further including non-fueled cylinders. Exhaust from the fueled cylinders is directed through the aftertreatment system while uncombusted gas from the non-fueled cylinders is directed away from the aftertreatment system. In certain embodiments, the uncombusted gas may be directed into an intake manifold in fluid communication with the plurality of combustion cylinders through an orifice. The system includes an engine having exhaust valves to control flow of the exhaust and uncombusted gas and a controller configured to perform the operations of the method.Type: GrantFiled: February 14, 2017Date of Patent: November 19, 2019Assignee: Cummins Inc.Inventors: Paul Douglas Free, Jennifer Kay Light-Holets, Vaibhav Daramwar, David A. Brush
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Publication number: 20190264594Abstract: Systems, methods, and apparatuses are provided for increasing exhaust gas temperature. A system includes a valve and a controller coupled to the valve. The controller is structured to determine that an exhaust manifold pressure does not meet an exhaust manifold pressure setpoint and in response, cause an adjustment of an effective flow area of exhaust gas from an engine. The adjustment of the effective flow area is structured to increase an exhaust gas temperature.Type: ApplicationFiled: May 10, 2019Publication date: August 29, 2019Applicant: Cummins Inc.Inventors: Travis Alva Anderson, Joan M. Wills, Rajkumar Subramanian, Vaibhav Daramwar, Pagalavan Mathari Bakthavatsalam, Paul Daniel Borisuk
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Patent number: 10287945Abstract: A method for increasing the exhaust temperature of an exhaust system. The method includes receiving an inlet temperature of a selective catalytic reduction system; determining whether the inlet temperature meets a temperature setpoint; adjusting an exhaust manifold pressure setpoint based on the determination of the inlet temperature; determining whether the exhaust manifold pressure of at least one of first or second bank meet the exhaust manifold pressure setpoint; and causing an adjustment of an effective flow area of at least one of the first bank or second bank based on the exhaust manifold pressure, the adjustment of the effective flow area structured to increase exhaust temperature during light load operation.Type: GrantFiled: January 26, 2017Date of Patent: May 14, 2019Assignee: Cummins, Inc.Inventors: Travis Alva Anderson, Joan M. Wills, Rajkumar Subramanian, Vaibhav Daramwar, Pagalavan Mathari Bakthavatsalam, Paul Daniel Borisuk
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Patent number: 10125700Abstract: There is disclosed system and methods that maintain efficiency of an aftertreatment component during a motoring event or condition of an internal combustion engine while also lowering oil consumption and particulate number emissions.Type: GrantFiled: August 29, 2016Date of Patent: November 13, 2018Assignee: Cummins Inc.Inventors: Timothy Lee Antcliff, Vijai Raghunathan, Norbert J. Rehm, IV, Vaibhav Daramwar, John C. Stetter, Mostafa M. Kamel
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Publication number: 20180209318Abstract: A method for increasing the exhaust temperature of an exhaust system. The method includes receiving an inlet temperature of a selective catalytic reduction system; determining whether the inlet temperature meets a temperature setpoint; adjusting an exhaust manifold pressure setpoint based on the determination of the inlet temperature; determining whether the exhaust manifold pressure of at least one of first or second bank meet the exhaust manifold pressure setpoint; and causing an adjustment of an effective flow area of at least one of the first bank or second bank based on the exhaust manifold pressure, the adjustment of the effective flow area structured to increase exhaust temperature during light load operation.Type: ApplicationFiled: January 26, 2017Publication date: July 26, 2018Applicant: Cummins, Inc.Inventors: Travis Alva Anderson, Joan M. Wills, Rajkumar Subramanian, Vaibhav Daramwar, Pagalavan Mathari Bakthavatsalam, Paul Daniel Borisuk
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Publication number: 20170152781Abstract: A system and method are disclosed for improving the performance of an aftertreatment system by elevating its temperature above an activation temperature. According to at least one aspect of the present disclosure, the method includes injecting a quantity of a fuel into certain fueled cylinders of a plurality of combustion cylinders of an internal combustion engine, the plurality of combustion cylinders further including non-fueled cylinders. Exhaust from the fueled cylinders is directed through the aftertreatment system while uncombusted gas from the non-fueled cylinders is directed away from the aftertreatment system. In certain embodiments, the uncombusted gas may be directed into an intake manifold in fluid communication with the plurality of combustion cylinders through an orifice. The system includes an engine having exhaust valves to control flow of the exhaust and uncombusted gas and a controller configured to perform the operations of the method.Type: ApplicationFiled: February 14, 2017Publication date: June 1, 2017Inventors: Paul Douglas Free, Jennifer Kay Light- Holets, Vaibhav Daramwar, David A. Brush
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Publication number: 20160363064Abstract: There is disclosed system and methods that maintain efficiency of an aftertreatment component during a motoring event or condition of an internal combustion engine while also lowering oil consumption and particulate number emissions.Type: ApplicationFiled: August 29, 2016Publication date: December 15, 2016Inventors: Timothy Lee Antcliff, Vijai Raghunathan, Norbert J. Rehm, IV, Vaibhav Daramwar, John C. Stetter, Mostafa M. Kamel