Patents by Inventor Govindarajan Kothandaraman
Govindarajan Kothandaraman 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: 20230274648Abstract: Systems and apparatuses include one or more processing circuits including one or more memory devices coupled to one or more processors. The one or more memory devices are configured to store instructions thereon that, when executed by the one or more processors, cause the one or more processors to: receive a parameter regarding operation of a first vehicle of a first platoon; compare the parameter to a first predetermined threshold; responsive to determining that the parameter satisfies the first predetermined threshold, determine an exit parameter for the first vehicle; and cause the first vehicle to exit the first platoon based on the exit parameter.Type: ApplicationFiled: May 8, 2023Publication date: August 31, 2023Applicant: Cummins Inc.Inventors: Vivek Anand Sujan, Phani Kiran Vajapeyazula, Govindarajan Kothandaraman, Jingxuan Liu, Kenneth M. Follen
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Patent number: 11725564Abstract: A method includes acquiring nitrogen oxide (NOx) data indicative of a first amount of NOx in an exhaust flow exiting an engine and a second amount of NOx in the exhaust flow exiting an exhaust aftertreatment system coupled to the engine where the exhaust aftertreatment system including a selective catalytic reduction (SCR) system including a SCR catalyst; determining a NOx conversion efficiency fault is present within the exhaust aftertreatment system based on the first amount of NOx and the second amount of NOx; monitoring an actual amount of NOx in the exhaust flow downstream of the SCR catalyst; determining an expected amount of NOx downstream of the SCR catalyst; and determining the SCR catalyst is responsible for the NOx conversion efficiency fault in response to the actual amount of NOx differing from the expected amount of NOx by more than a threshold amount.Type: GrantFiled: August 10, 2020Date of Patent: August 15, 2023Assignee: Cummins Inc.Inventors: Aniket Gupta, Michael J. Cunningham, Michael Haas, Govindarajan Kothandaraman
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Patent number: 11682306Abstract: Systems and apparatuses include one or more processing circuits comprising one or more memory devices coupled to one or more processors, the one or more memory devices configured to store instructions thereon that, when executed by the one or more processors, cause the one or more processors to: determine at least one reason for a deserter to exit a first platoon; determine a deserter position within the first platoon; communicate the deserter exit to the first platoon after determination of the at least one reason for the deserter to exit the first platoon based at least in part on the deserter position; adapt a behavior of the first platoon to allow the deserter to exit the first platoon; and reconfigure the remaining vehicles from the first platoon into a second platoon.Type: GrantFiled: March 8, 2021Date of Patent: June 20, 2023Assignee: Cummins Inc.Inventors: Vivek Anand Sujan, Phani Kiran Vajapeyazula, Govindarajan Kothandaraman, Jingxuan Liu, Kenneth M. Follen
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Patent number: 11549454Abstract: Systems, apparatus, and methods are disclosed that include a divided exhaust engine with at least one primary EGR cylinder and a plurality of non-primary EGR cylinders. The systems, apparatus and methods control the amount of recirculated exhaust gas in a charge flow in response to EGR fraction deviation conditions.Type: GrantFiled: May 10, 2021Date of Patent: January 10, 2023Assignee: Cummins Inc.Inventors: Carlos Alcides Lana, David J. Stroh, Samuel C. Geckler, Marten H. Dane, Anthony Kyle Perfetto, Karthik Kappaganthu, Govindarajan Kothandaraman
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Publication number: 20220381166Abstract: Systems, devices, and methods are disclosed that during cylinder deactivation, including skipfire, at low engines speeds and low engine loads maintain adequate oil pressure of valvetrain components or hardware required for CDA and/or skipfire operation.Type: ApplicationFiled: August 9, 2022Publication date: December 1, 2022Inventors: Govindarajan Kothandaraman, Lyle E. Kocher, David M. Barnes, Scott Robert Bardakjy, J. Steven Kolhouse
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Patent number: 11512630Abstract: A method for controlling operation of an opposed piston engine is provided, comprising: determining a direction of rotation of the engine; comparing the determined direction of rotation to a correct direction of rotation of the engine; and responding to the determined direction of rotation being different from the correct direction of rotation by taking corrective action.Type: GrantFiled: August 30, 2018Date of Patent: November 29, 2022Assignee: CUMMINS INC.Inventors: Hoseinali Borhan, Dwight A. Doig, Govindarajan Kothandaraman, David E. Koeberlein
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Techniques for transient estimation and compensation of control parameters for dedicated EGR engines
Patent number: 11492992Abstract: One embodiment is a system comprising an engine including a dedicated EGR cylinder configured to provide EGR to the engine via an EGR loop, a non-dedicated cylinder, a plurality of injectors, an ignition system including a plurality of spark plugs, an intake throttle, and an electronic control system. The electronic control system is configured to control combustion during transient operation of the engine by determining one or more combustion control parameters compensating for variation of one or more of inert matter, unburned air and unburned fuel in EGR output by the dedicated EGR cylinder during transient operation of the engine, and an effect of the EGR loop on inert matter, unburned air and unburned fuel provided to the plurality of cylinders, and controlling operation of at least one of the throttle, the ignition system and the plurality of injectors in response to at least one of the one or more combustion control parameters.Type: GrantFiled: January 13, 2020Date of Patent: November 8, 2022Assignee: Cummins Inc.Inventors: Shashank Tamaskar, Kartavya Neema, Carlos Alcides Lana, Govindarajan Kothandaraman -
Patent number: 11428133Abstract: Systems and apparatuses include a controller including at least one processor coupled to a memory storing instructions that, when executed by the at least one processor, causes the controller to: determine a set of emission regulations based on a location of a vehicle; determine a target temperature of a catalyst of an aftertreatment system of the vehicle in response to the determined set of emission regulations; compare a current temperature of the catalyst to the determined target temperature; and in response to the current temperature of the catalyst being below the determined target temperature, provide a thermal management command to increase the catalyst temperature toward the determined target temperature.Type: GrantFiled: May 25, 2021Date of Patent: August 30, 2022Assignees: Cummins Inc., Tula Technology, Inc.Inventors: Jennifer Kay Light-Holets, J. Steven Kolhouse, Govindarajan Kothandaraman, Carlos Alcides Lana
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Patent number: 11384681Abstract: An opposed-piston engine includes an electronic sensor located in a charge air channel, at position between an outlet of a charge air cooler and an air intake component that distributes charge air to cylinder intake ports of the engine. The electronic sensor is disposed to measure a rate of mass airflow between the outlet of the charge air cooler and the intake component and generate electronic signals indicative of the rate of mass airflow from the charge air cooler. A control mechanization of the opposed-piston engine is electrically connected to the electronic sensor for controlling air handling devices, fuel provisioning devices, and/or EGR devices in response to the electronic signals.Type: GrantFiled: November 25, 2019Date of Patent: July 12, 2022Assignee: Achates Power, Inc.Inventors: Govindarajan Kothandaraman, Hoseinali Borhan, David E. Koeberlein, Dwight A. Doig
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Publication number: 20210372312Abstract: Systems and apparatuses include a controller including at least one processor coupled to a memory storing instructions that, when executed by the at least one processor, causes the controller to: determine a set of emission regulations based on a location of a vehicle; determine a target temperature of a catalyst of an aftertreatment system of the vehicle in response to the determined set of emission regulations; compare a current temperature of the catalyst to the determined target temperature; and in response to the current temperature of the catalyst being below the determined target temperature, provide a thermal management command to increase the catalyst temperature toward the determined target temperature.Type: ApplicationFiled: May 25, 2021Publication date: December 2, 2021Applicants: Cummins Inc., Tula Technology, Inc.Inventors: Jennifer Kay Light-Holets, J. Steven Kolhouse, Govindarajan Kothandaraman, Carlos Alcides Lana
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Patent number: 11187171Abstract: An internal combustion engine is controlled in response to a location of the engine and an operational status of the engine to stop or reduce carbon monoxide emissions.Type: GrantFiled: September 18, 2020Date of Patent: November 30, 2021Assignee: Cummins Inc.Inventors: Thomas M. Yonushonis, Jennifer K Light-Holets, Joseph P. Chandraraj, Aaron William Beinborn, Govindarajan Kothandaraman
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Publication number: 20210262404Abstract: Systems, apparatus, and methods are disclosed that include a divided exhaust engine with at least one primary EGR cylinder and a plurality of non-primary EGR cylinders. The systems, apparatus and methods control the amount of recirculated exhaust gas in a charge flow in response to EGR fraction deviation conditions.Type: ApplicationFiled: May 10, 2021Publication date: August 26, 2021Inventors: Carlos Alcides Lana, David J. Stroh, Samuel C. Geckler, Marten H. Dane, Anthony Kyle Perfetto, Karthik Kappaganthu, Govindarajan Kothandaraman
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Patent number: 11067015Abstract: Systems, apparatus, and methods are disclosed that include a divided exhaust engine with at least one primary exhaust gas recirculation (EGR) cylinder and a plurality of non-primary EGR cylinders. The systems, apparatus and methods control the EGR fraction by deactivation of one or more of the cylinders.Type: GrantFiled: March 18, 2020Date of Patent: July 20, 2021Assignee: Cummins Inc.Inventors: Jennifer Kay Light-Holets, Govindarajan Kothandaraman, J. Steven Kolhouse, Vivek Anand Sujan
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Publication number: 20210192959Abstract: Systems and apparatuses include one or more processing circuits comprising one or more memory devices coupled to one or more processors, the one or more memory devices configured to store instructions thereon that, when executed by the one or more processors, cause the one or more processors to: determine at least one reason for a deserter to exit a first platoon; determine a deserter position within the first platoon; communicate the deserter exit to the first platoon after determination of the at least one reason for the deserter to exit the first platoon based at least in part on the deserter position; adapt a behavior of the first platoon to allow the deserter to exit the first platoon; and reconfigure the remaining vehicles from the first platoon into a second platoon.Type: ApplicationFiled: March 8, 2021Publication date: June 24, 2021Applicant: Cummins Inc.Inventors: Vivek Anand Sujan, Phani Kiran Vajapeyazula, Govindarajan Kothandaraman, Jingxuan Liu, Kenneth M. Follen
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Patent number: 11028792Abstract: Systems, apparatus, and methods are disclosed that include a divided exhaust engine with at least one primary EGR cylinder and a plurality of non-primary EGR cylinders. The systems, apparatus and methods control the amount of recirculated exhaust gas in a charge flow in response to EGR fraction deviation conditions.Type: GrantFiled: January 7, 2019Date of Patent: June 8, 2021Assignee: Cummins Inc.Inventors: Carlos Alcides Lana, David J. Stroh, Samuel C. Geckler, Marten H. Dane, Anthony Kyle Perfetto, Karthik Kappaganthu, Govindarajan Kothandaraman
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Publication number: 20210156298Abstract: An opposed-piston engine includes an electronic sensor located in a charge air channel, at position between an outlet of a charge air cooler and an air intake component that distributes charge air to cylinder intake ports of the engine. The electronic sensor is disposed to measure a rate of mass airflow between the outlet of the charge air cooler and the intake component and generate electronic signals indicative of the rate of mass airflow from the charge air cooler. A control mechanization of the opposed-piston engine is electrically connected to the electronic sensor for controlling air handling devices, fuel provisioning devices, and/or EGR devices in response to the electronic signals.Type: ApplicationFiled: November 25, 2019Publication date: May 27, 2021Applicant: ACHATES POWER, INC.Inventors: GOVINDARAJAN KOTHANDARAMAN, Hoseinali Borhan, David E. Koeberlein, Dwight A. Doig
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Publication number: 20210140379Abstract: An internal combustion engine is controlled in response to a location of the engine and an operational status of the engine to stop or reduce carbon monoxide emissions.Type: ApplicationFiled: September 18, 2020Publication date: May 13, 2021Inventors: Thomas M. Yonushonis, Jennifer K. Light-Holets, Joseph P. Chandraraj, Aaron William Beinborn, Govindarajan Kothandaraman
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Patent number: 11002202Abstract: An engine system includes an air handling control unit which controls a plurality of air handling actuators responsible for maintaining flow of air and exhaust gas within the engine system. The engine system has a plurality of sensors whose sensor signals at least partially define a current state of the engine system. The air handling control unit includes a controller which controls the air handling actuators of the engine system as well as a processing unit coupled to the sensors and the controller. The processing unit includes an agent which learns a policy function that is trained to process the current state, determines a control signal to send to the controller by using the policy function after receiving the current state as an input, and outputs the control signal to the controller. Then, the agent receives a next state and a reward value from the processing unit and updates the policy function using a policy evaluation algorithm and a policy improvement algorithm based on the received reward value.Type: GrantFiled: August 21, 2018Date of Patent: May 11, 2021Assignee: Cummins Inc.Inventors: Kartavya Neema, Vikas Narang, Govindarajan Kothandaraman, Shashank Tamaskar
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Patent number: 10971017Abstract: Methods, systems and apparatuses for inter-vehicle communication, fusion of sensor information, and information sharing resulting from inter-vehicle communication are disclosed along with control of one or more vehicles in response to information from one or more other vehicles.Type: GrantFiled: October 31, 2018Date of Patent: April 6, 2021Assignee: Cummins Inc.Inventors: Pinak Jayant Tulpule, Govindarajan Kothandaraman, Edmund P. Hodzen, Kenneth M. Follen, Archit N. Koti
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Patent number: 10943490Abstract: Systems and apparatuses include a controller including a circuit structured to communicate with a platoon of vehicles, determine a platoon rank order, determine final separation distances between vehicles, affect operation of each vehicle to achieve the platoon rank order and final separation distances, monitor the platoon of vehicles to determine if a deserter is leaving the platoon of vehicles or if a critical change has occurred, determine an updated platoon rank order, and determine an updated final separation distances between vehicles.Type: GrantFiled: October 29, 2018Date of Patent: March 9, 2021Assignee: Cummins, Inc.Inventors: Vivek Anand Sujan, Phani Kiran Vajapeyazula, Govindarajan Kothandaraman, Jingxuan Liu, Kenneth M. Follen