Patents by Inventor Boopathi Singalandapuram Mahadevan
Boopathi Singalandapuram Mahadevan 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: 20240133326Abstract: Systems and methods for removing soot in an aftertreatment system are disclosed. A method includes: receiving data regarding an exhaust gas flow rate of exhaust gas; receiving data regarding a selective catalytic reduction (SCR) inlet temperature; determining an adsorption amount of soot in the exhaust aftertreatment system based on the exhaust gas flow rate of the exhaust gas and the SCR inlet temperature; comparing the adsorption amount of soot to a predefined adsorption amount limit; in response to the adsorption amount of soot exceeding the predefined adsorption amount limit; initiating an exhaust cleaning event to remove at least some accumulated soot in the exhaust aftertreatment system; receiving exhaust gas data during the exhaust cleaning event; determining a desorption amount of soot based on the exhaust gas data; comparing the desorption amount of soot to a predefined desorption limit; and ceasing the exhaust cleaning event based on the comparison.Type: ApplicationFiled: January 2, 2024Publication date: April 25, 2024Applicant: Cummins Inc.Inventors: Todd C. Bouws, Ankit Raghunath Lad, Joshua A. Lantz, Boopathi Singalandapuram Mahadevan, Ian W. McGiffen, Douglas A. Roxbury
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Patent number: 11898480Abstract: Systems and methods for removing accumulated soot in an aftertreatment system are disclosed herein. A method includes: determining, by a controller, an adsorption amount of soot in an exhaust aftertreatment system; comparing, by the controller, the adsorption amount of soot to a predefined adsorption amount limit; in response to the adsorption amount exceeding the predefined adsorption amount limit, initiating, by the controller, an exhaust cleaning event to remove at least some accumulated soot in the exhaust aftertreatment system; receiving, by the controller, exhaust gas data during the exhaust cleaning event; determining, by the controller, a desorption amount of soot based on the exhaust gas data; comparing, by the controller, the desorption amount of soot to a predefined desorption limit; and ceasing, by the controller, the exhaust cleaning event based on the comparison.Type: GrantFiled: September 2, 2022Date of Patent: February 13, 2024Assignee: Cummins Inc.Inventors: Todd C. Bouws, Ankit Raghunath Lad, Joshua A. Lantz, Boopathi Singalandapuram Mahadevan, Ian W. McGiffen, Douglas A. Roxbury
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Patent number: 11591944Abstract: A controller for removing deposits in a vehicle is disclosed. The controller includes at least one processor and a memory storing instructions therein that, when executed by the at least one processor, cause the at least one processor to: determine an amount of deposits accumulated in the vehicle based on an amount of time; determine a combustion target for the vehicle in response to determining that the amount of deposits exceeds a deposit threshold; and modulate a fluid flow of the vehicle based on the determined combustion target.Type: GrantFiled: March 26, 2021Date of Patent: February 28, 2023Assignee: Cummins Inc.Inventors: John L. Hoehne, Paul Daniel Borisuk, Boopathi Singalandapuram Mahadevan, Joshua A. Lantz, Jeffrey W. Lewis, Snita Navnith Menon
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Publication number: 20220412238Abstract: Systems and methods for removing accumulated soot in an aftertreatment system are disclosed herein. A method includes: determining, by a controller, an adsorption amount of soot in an exhaust aftertreatment system; comparing, by the controller, the adsorption amount of soot to a predefined adsorption amount limit; in response to the adsorption amount exceeding the predefined adsorption amount limit, initiating, by the controller, an exhaust cleaning event to remove at least some accumulated soot in the exhaust aftertreatment system; receiving, by the controller, exhaust gas data during the exhaust cleaning event; determining, by the controller, a desorption amount of soot based on the exhaust gas data; comparing, by the controller, the desorption amount of soot to a predefined desorption limit; and ceasing, by the controller, the exhaust cleaning event based on the comparison.Type: ApplicationFiled: September 2, 2022Publication date: December 29, 2022Applicant: Cummins Inc.Inventors: Todd C. Bouws, Ankit Raghunath Lad, Joshua A. Lantz, Boopathi Singalandapuram Mahadevan, Ian W. McGiffen, Douglas A. Roxbury
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Patent number: 11434797Abstract: Systems and methods for removing accumulated soot in an aftertreatment system for an engine are disclosed herein. A method includes receiving an indication that an engine of a vehicle has been operating in a low load condition for more than a predefined amount of time; in response, determining an adsorption rate of soot in an exhaust aftertreatment system of the vehicle; determining an adsorption amount of soot based on the adsorption rate for a predefined amount of time; comparing the adsorption amount to a predefine adsorption amount limit; and in response to the adsorption amount exceeding the predefined adsorption amount limit, initiating an exhaust cleaning event to remove at least some of the accumulated soot in the exhaust aftertreatment system.Type: GrantFiled: April 25, 2018Date of Patent: September 6, 2022Assignee: Cummins Inc.Inventors: Todd C. Bouws, Ankit Raghunath Lad, Joshua A. Lantz, Boopathi Singalandapuram Mahadevan, Ian W. McGiffen, Douglas A. Roxbury
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Publication number: 20210285353Abstract: A controller for removing deposits in a vehicle is disclosed. The controller includes at least one processor and a memory storing instructions therein that, when executed by the at least one processor, cause the at least one processor to: determine an amount of deposits accumulated in the vehicle based on an amount of time; determine a combustion target for the vehicle in response to determining that the amount of deposits exceeds a deposit threshold; and modulate a fluid flow of the vehicle based on the determined combustion target.Type: ApplicationFiled: March 26, 2021Publication date: September 16, 2021Inventors: John L. Hoehne, Paul Daniel Borisuk, Boopathi Singalandapuram Mahadevan, Joshua A. Lantz, Jeffrey W. Lewis, Snita Navnith Menon
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Patent number: 10961889Abstract: Systems and methods for removing deposit in an aftertreatment system for an engine are disclosed herein. The method comprises determining an amount of deposits accumulated in the aftertreatment system, determining combustion targets for the engine in response to determining the amount of deposits exceeds a deposit threshold, and modulating an air mass flow for the engine based on the determined combustion targets. The air mass flow can be modulated by changing the position of the wastegate or the geometry of the variable geometry turbine (VGT).Type: GrantFiled: July 27, 2017Date of Patent: March 30, 2021Assignee: Cummins Inc.Inventors: John L. Hoehne, Paul Daniel Borisuk, Boopathi Singalandapuram Mahadevan, Joshua A. Lantz, Jeffrey W. Lewis, Snita Navnith Menon
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Publication number: 20200095912Abstract: Systems and methods for removing accumulated soot in an aftertreatment system for an engine are disclosed herein. A method includes receiving an indication that an engine of a vehicle has been operating in a low load condition for more than a predefined amount of time; in response, determining an adsorption rate of soot in an exhaust aftertreatment system of the vehicle; determining an adsorption amount of soot based on the adsorption rate for a predefined amount of time; comparing the adsorption amount to a predefine adsorption amount limit; and in response to the adsorption amount exceeding the predefined adsorption amount limit, initiating an exhaust cleaning event to remove at least some of the accumulated soot in the exhaust aftertreatment system.Type: ApplicationFiled: April 25, 2018Publication date: March 26, 2020Applicant: Cummins Inc.Inventors: Todd C. Bouws, Ankit Raghunath Lad, Joshua A. Lantz, Boopathi Singalandapuram Mahadevan, Ian W. McGiffen, Douglas A. Roxbury
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Patent number: 10533514Abstract: A method of controlling a fuel injector comprises measuring a pressure in a cylinder of an engine with a pressure sensor and determining at least one of a crank angle and a crank speed with a crank sensor. The method also comprises calculating a net indicated mean effective pressure of the cylinder from the measured value of the pressure sensor and the determined value of the crank sensor. Also, the method comprises adjusting a fueling parameter of a fuel injector for the cylinder in response to the difference between the calculated net indicated mean effective pressure and a reference mean effective pressure indicates a change in power of the engine. Alternatively, the method may adjust the fueling parameter based on a power feedback signal for the engine.Type: GrantFiled: June 2, 2017Date of Patent: January 14, 2020Assignee: Cummins Inc.Inventors: Phanindra V. Garimella, John L. Hoehne, Ian W. McGiffen, Chandan Mahato, Boopathi Singalandapuram Mahadevan, Pagalavan Mathari Bakthavatsalam, Travis Alva Anderson
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Patent number: 10480441Abstract: A system and method for controlling a temperature of an exhaust gas at an inlet of a selective catalytic reduction system during at least certain low air density conditions. The system may detect an air density value upstream of an internal combustion engine of an engine system, such as, for example, at an inlet of a compressor. Using the detected air density, one of a plurality of relationships between an engine speed and an outputted engine power, as a function of the detected air density value, may be selected for use in determining what combination of engine speed(s) and/or engine power(s) will produce an exhaust gas that is within a target exhaust gas temperature. Using the selected relationship, at least one of the engine speed and the engine power may be adjusted to at least assist in attaining the target exhaust gas temperature.Type: GrantFiled: January 18, 2018Date of Patent: November 19, 2019Assignee: Cummins Inc.Inventors: John L. Hoehne, Ian W. McGiffen, Chandan Mahato, Paul Daniel Borisuk, Boopathi Singalandapuram Mahadevan
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Publication number: 20190226420Abstract: A method of controlling a fuel injector comprises measuring a pressure in a cylinder of an engine with a pressure sensor and determining at least one of a crank angle and a crank speed with a crank sensor. The method also comprises calculating a net indicated mean effective pressure of the cylinder from the measured value of the pressure sensor and the determined value of the crank sensor. Also, the method comprises adjusting a fueling parameter of a fuel injector for the cylinder in response to the difference between the calculated net indicated mean effective pressure and a reference mean effective pressure indicates a change in power of the engine. Alternatively, the method may adjust the fueling parameter based on a power feedback signal for the engine.Type: ApplicationFiled: June 2, 2017Publication date: July 25, 2019Inventors: Phanindra V. Garimella, John L. Hoehne, Ian W. McGiffen, Chandan Mahato, Boopathi Singalandapuram Mahadevan, Pagalavan Mathari Bakthavatsalam, Travis Alva Anderson
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Publication number: 20190162096Abstract: Systems and methods for removing deposit in an aftertreatment system for an engine are disclosed herein. The method comprises determining an amount of deposits accumulated in the aftertreatment system, determining combustion targets for the engine in response to determining the amount of deposits exceeds a deposit threshold, and modulating an air mass flow for the engine based on the determined combustion targets. The air mass flow can be modulated by changing the position of the wastegate or the geometry of the variable geometry turbine (VGT).Type: ApplicationFiled: July 27, 2017Publication date: May 30, 2019Applicant: Cummins Inc.Inventors: John L. Hoehne, Paul Daniel Borisuk, Boopathi Singalandapuram Mahadevan, Joshua A. Lantz, Jeffrey W. Lewis, Snita Navnith Menon
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Publication number: 20180149105Abstract: A system and method for controlling a temperature of an exhaust gas at an inlet of a selective catalytic reduction system during at least certain low air density conditions. The system may detect an air density value upstream of an internal combustion engine of an engine system, such as, for example, at an inlet of a compressor. Using the detected air density, one of a plurality of relationships between an engine speed and an outputted engine power, as a function of the detected air density value, may be selected for use in determining what combination of engine speed(s) and/or engine power(s) will produce an exhaust gas that is within a target exhaust gas temperature. Using the selected relationship, at least one of the engine speed and the engine power may be adjusted to at least assist in attaining the target exhaust gas temperature.Type: ApplicationFiled: January 18, 2018Publication date: May 31, 2018Inventors: John L. Hoehne, Ian W. McGiffen, Chandan Mahato, Paul Daniel Borisuk, Boopathi Singalandapuram Mahadevan
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Patent number: 9587567Abstract: Various embodiments relate to a method of operating an engine system with injectors having nozzle sac volume. The engine system may be a four-stroke, high power engine having a high-pressure common-rail injection system. A number of engine cylinders to fire is selected based on a fuel injection quantity per selected engine cylinder such that a nitrogen oxides (NOx) emission is less than a first predetermined threshold and a smoke value is less than a second predetermined threshold. The fuel injection quantity per cylinder may be higher than a nominal fuel injection quantity to improve fuel injector spray characteristics. The exhaust can be mixed with fresh air blowout from deactivated cylinders to further reduce smoke value. The engine system is operated with a firing pattern for the selected number of cylinders to fire.Type: GrantFiled: June 30, 2014Date of Patent: March 7, 2017Assignee: CUMMINS INC.Inventors: Boopathi Singalandapuram Mahadevan, Chandan Mahato, John L. Hoehne, Ian W. McGiffen
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Publication number: 20150377171Abstract: Various embodiments relate to a method of operating an engine system with injectors having nozzle sac volume. The engine system may be a four-stroke, high power engine having a high-pressure common-rail injection system. A number of engine cylinders to fire is selected based on a fuel injection quantity per selected engine cylinder such that a nitrogen oxides (NOx) emission is less than a first predetermined threshold and a smoke value is less than a second predetermined threshold. The fuel injection quantity per cylinder may be higher than a nominal fuel injection quantity to improve fuel injector spray characteristics. The exhaust can be mixed with fresh air blowout from deactivated cylinders to further reduce smoke value. The engine system is operated with a firing pattern for the selected number of cylinders to fire.Type: ApplicationFiled: June 30, 2014Publication date: December 31, 2015Inventors: Boopathi Singalandapuram Mahadevan, Chandan Mahato, John L. Hoehne, Ian W. McGiffen
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Patent number: D792469Type: GrantFiled: March 26, 2015Date of Patent: July 18, 2017Assignee: Cummins Inc.Inventors: Pavan Prakash Duvvuri, Nilesh Deshpande, Boopathi Singalandapuram Mahadevan, Parul Jain