Patents by Inventor Pagalavan Mathari Bakthavatsalam

Pagalavan Mathari Bakthavatsalam 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: 20230296041
    Abstract: 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: Application
    Filed: May 24, 2023
    Publication date: September 21, 2023
    Applicant: CUMMINS INC.
    Inventors: Travis Alva Anderson, Joan M. Wills, Rajkumar Subramanian, Vaibhav Daramwar, Pagalavan Mathari Bakthavatsalam, Paul Daniel Borisuk
  • Patent number: 11692472
    Abstract: 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: Grant
    Filed: October 14, 2022
    Date of Patent: July 4, 2023
    Assignee: Cummins Inc.
    Inventors: Travis Alva Anderson, Joan M. Wills, Rajkumar Subramanian, Vaibhav Daramwar, Pagalavan Mathari Bakthavatsalam, Paul Daniel Borisuk
  • Publication number: 20230035148
    Abstract: 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: Application
    Filed: October 14, 2022
    Publication date: February 2, 2023
    Applicant: Cummins, Inc.
    Inventors: Travis Alva Anderson, Joan M. Wills, Rajkumar Subramanian, Vaibhav Daramwar, Pagalavan Mathari Bakthavatsalam, Paul Daniel Borisuk
  • Patent number: 11473469
    Abstract: 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: Grant
    Filed: May 3, 2021
    Date of Patent: October 18, 2022
    Assignee: Cummins, Inc.
    Inventors: Travis Alva Anderson, Joan M. Wills, Rajkumar Subramanian, Vaibhav Daramwar, Pagalavan Mathari Bakthavatsalam, Paul Daniel Borisuk
  • Publication number: 20210254530
    Abstract: 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: Application
    Filed: May 3, 2021
    Publication date: August 19, 2021
    Applicant: Cummins, Inc.
    Inventors: Travis Alva Anderson, Joan M. Wills, Rajkumar Subramanian, Vaibhav Daramwar, Pagalavan Mathari Bakthavatsalam, Paul Daniel Borisuk
  • Patent number: 10995642
    Abstract: 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: Grant
    Filed: May 10, 2019
    Date of Patent: May 4, 2021
    Assignee: Cummins Inc.
    Inventors: Travis Alva Anderson, Joan M. Wills, Rajkumar Subramanian, Vaibhav Daramwar, Pagalavan Mathari Bakthavatsalam, Paul Daniel Borisuk
  • Patent number: 10533514
    Abstract: 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: Grant
    Filed: June 2, 2017
    Date of Patent: January 14, 2020
    Assignee: Cummins Inc.
    Inventors: Phanindra V. Garimella, John L. Hoehne, Ian W. McGiffen, Chandan Mahato, Boopathi Singalandapuram Mahadevan, Pagalavan Mathari Bakthavatsalam, Travis Alva Anderson
  • Publication number: 20190264594
    Abstract: 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: Application
    Filed: May 10, 2019
    Publication date: August 29, 2019
    Applicant: Cummins Inc.
    Inventors: Travis Alva Anderson, Joan M. Wills, Rajkumar Subramanian, Vaibhav Daramwar, Pagalavan Mathari Bakthavatsalam, Paul Daniel Borisuk
  • Publication number: 20190226420
    Abstract: 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: Application
    Filed: June 2, 2017
    Publication date: July 25, 2019
    Inventors: Phanindra V. Garimella, John L. Hoehne, Ian W. McGiffen, Chandan Mahato, Boopathi Singalandapuram Mahadevan, Pagalavan Mathari Bakthavatsalam, Travis Alva Anderson
  • Patent number: 10287945
    Abstract: 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: Grant
    Filed: January 26, 2017
    Date of Patent: May 14, 2019
    Assignee: Cummins, Inc.
    Inventors: Travis Alva Anderson, Joan M. Wills, Rajkumar Subramanian, Vaibhav Daramwar, Pagalavan Mathari Bakthavatsalam, Paul Daniel Borisuk
  • Publication number: 20180209318
    Abstract: 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: Application
    Filed: January 26, 2017
    Publication date: July 26, 2018
    Applicant: Cummins, Inc.
    Inventors: Travis Alva Anderson, Joan M. Wills, Rajkumar Subramanian, Vaibhav Daramwar, Pagalavan Mathari Bakthavatsalam, Paul Daniel Borisuk