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).

  • Publication number: 20230274648
    Abstract: 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: Application
    Filed: May 8, 2023
    Publication date: August 31, 2023
    Applicant: Cummins Inc.
    Inventors: Vivek Anand Sujan, Phani Kiran Vajapeyazula, Govindarajan Kothandaraman, Jingxuan Liu, Kenneth M. Follen
  • Patent number: 11725564
    Abstract: 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: Grant
    Filed: August 10, 2020
    Date of Patent: August 15, 2023
    Assignee: Cummins Inc.
    Inventors: Aniket Gupta, Michael J. Cunningham, Michael Haas, Govindarajan Kothandaraman
  • Patent number: 11682306
    Abstract: 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: Grant
    Filed: March 8, 2021
    Date of Patent: June 20, 2023
    Assignee: Cummins Inc.
    Inventors: Vivek Anand Sujan, Phani Kiran Vajapeyazula, Govindarajan Kothandaraman, Jingxuan Liu, Kenneth M. Follen
  • Patent number: 11549454
    Abstract: 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: Grant
    Filed: May 10, 2021
    Date of Patent: January 10, 2023
    Assignee: Cummins Inc.
    Inventors: Carlos Alcides Lana, David J. Stroh, Samuel C. Geckler, Marten H. Dane, Anthony Kyle Perfetto, Karthik Kappaganthu, Govindarajan Kothandaraman
  • Publication number: 20220381166
    Abstract: 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: Application
    Filed: August 9, 2022
    Publication date: December 1, 2022
    Inventors: Govindarajan Kothandaraman, Lyle E. Kocher, David M. Barnes, Scott Robert Bardakjy, J. Steven Kolhouse
  • Patent number: 11512630
    Abstract: 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: Grant
    Filed: August 30, 2018
    Date of Patent: November 29, 2022
    Assignee: CUMMINS INC.
    Inventors: Hoseinali Borhan, Dwight A. Doig, Govindarajan Kothandaraman, David E. Koeberlein
  • Patent number: 11492992
    Abstract: 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: Grant
    Filed: January 13, 2020
    Date of Patent: November 8, 2022
    Assignee: Cummins Inc.
    Inventors: Shashank Tamaskar, Kartavya Neema, Carlos Alcides Lana, Govindarajan Kothandaraman
  • Patent number: 11428133
    Abstract: 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: Grant
    Filed: May 25, 2021
    Date of Patent: August 30, 2022
    Assignees: Cummins Inc., Tula Technology, Inc.
    Inventors: Jennifer Kay Light-Holets, J. Steven Kolhouse, Govindarajan Kothandaraman, Carlos Alcides Lana
  • Patent number: 11384681
    Abstract: 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: Grant
    Filed: November 25, 2019
    Date of Patent: July 12, 2022
    Assignee: Achates Power, Inc.
    Inventors: Govindarajan Kothandaraman, Hoseinali Borhan, David E. Koeberlein, Dwight A. Doig
  • Publication number: 20210372312
    Abstract: 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: Application
    Filed: May 25, 2021
    Publication date: December 2, 2021
    Applicants: Cummins Inc., Tula Technology, Inc.
    Inventors: Jennifer Kay Light-Holets, J. Steven Kolhouse, Govindarajan Kothandaraman, Carlos Alcides Lana
  • Patent number: 11187171
    Abstract: 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: Grant
    Filed: September 18, 2020
    Date of Patent: November 30, 2021
    Assignee: Cummins Inc.
    Inventors: Thomas M. Yonushonis, Jennifer K Light-Holets, Joseph P. Chandraraj, Aaron William Beinborn, Govindarajan Kothandaraman
  • Publication number: 20210262404
    Abstract: 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: Application
    Filed: May 10, 2021
    Publication date: August 26, 2021
    Inventors: Carlos Alcides Lana, David J. Stroh, Samuel C. Geckler, Marten H. Dane, Anthony Kyle Perfetto, Karthik Kappaganthu, Govindarajan Kothandaraman
  • Patent number: 11067015
    Abstract: 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: Grant
    Filed: March 18, 2020
    Date of Patent: July 20, 2021
    Assignee: Cummins Inc.
    Inventors: Jennifer Kay Light-Holets, Govindarajan Kothandaraman, J. Steven Kolhouse, Vivek Anand Sujan
  • Publication number: 20210192959
    Abstract: 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: Application
    Filed: March 8, 2021
    Publication date: June 24, 2021
    Applicant: Cummins Inc.
    Inventors: Vivek Anand Sujan, Phani Kiran Vajapeyazula, Govindarajan Kothandaraman, Jingxuan Liu, Kenneth M. Follen
  • Patent number: 11028792
    Abstract: 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: Grant
    Filed: January 7, 2019
    Date of Patent: June 8, 2021
    Assignee: Cummins Inc.
    Inventors: Carlos Alcides Lana, David J. Stroh, Samuel C. Geckler, Marten H. Dane, Anthony Kyle Perfetto, Karthik Kappaganthu, Govindarajan Kothandaraman
  • Publication number: 20210156298
    Abstract: 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: Application
    Filed: November 25, 2019
    Publication date: May 27, 2021
    Applicant: ACHATES POWER, INC.
    Inventors: GOVINDARAJAN KOTHANDARAMAN, Hoseinali Borhan, David E. Koeberlein, Dwight A. Doig
  • Publication number: 20210140379
    Abstract: 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: Application
    Filed: September 18, 2020
    Publication date: May 13, 2021
    Inventors: Thomas M. Yonushonis, Jennifer K. Light-Holets, Joseph P. Chandraraj, Aaron William Beinborn, Govindarajan Kothandaraman
  • Patent number: 11002202
    Abstract: 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: Grant
    Filed: August 21, 2018
    Date of Patent: May 11, 2021
    Assignee: Cummins Inc.
    Inventors: Kartavya Neema, Vikas Narang, Govindarajan Kothandaraman, Shashank Tamaskar
  • Patent number: 10971017
    Abstract: 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: Grant
    Filed: October 31, 2018
    Date of Patent: April 6, 2021
    Assignee: Cummins Inc.
    Inventors: Pinak Jayant Tulpule, Govindarajan Kothandaraman, Edmund P. Hodzen, Kenneth M. Follen, Archit N. Koti
  • Patent number: 10943490
    Abstract: 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: Grant
    Filed: October 29, 2018
    Date of Patent: March 9, 2021
    Assignee: Cummins, Inc.
    Inventors: Vivek Anand Sujan, Phani Kiran Vajapeyazula, Govindarajan Kothandaraman, Jingxuan Liu, Kenneth M. Follen