Patents by Inventor Aradhita Chakrabarty

Aradhita Chakrabarty 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).

  • Knock mitigation and cylinder balancing in an internal combustion engine
    Patent number: 11131265
    Abstract: An engine control system comprises a balancing arrangement together with a knock mitigation controller configured to implement a knock mitigation procedure wherein an offset input value (VI) is applied to the balancing algorithm. The offset input value (VI) may cause the balancing algorithm to adjust the control output (O1) for the respective one of the combustion chambers to progressively vary the fuel supply or ignition timing for the affected cylinder to mitigate the knock condition. Alternatively, the controller may generate an offset output value (VO) to more rapidly vary the fuel supply or ignition timing, with the offset input value (VI) being selected for example to compensate for the resulting change in the control input (I1) from the cylinder to the balancing algorithm, or to provide additional, more gradual adjustment to further mitigate the knock condition.
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: September 28, 2021
    Assignee: Caterpillar Motoren GbmH & Co. KG
    Inventors: Eike Sixel, Scott Fiveland, Aradhita Chakrabarty, Daniel Wester, Hannes Marscheider, Andre Schmidt
  • Knock Mitigation and Cylinder Balancing in an Internal Combustion Engine
    Publication number: 20190376463
    Abstract: An engine control system comprises a balancing arrangement together with a knock mitigation controller configured to implement a knock mitigation procedure wherein an offset input value (VI) is applied to the balancing algorithm. The offset input value (VI) may cause the balancing algorithm to adjust the control output (O1) for the respective one of the combustion chambers to progressively vary the fuel supply or ignition timing for the affected cylinder to mitigate the knock condition. Alternatively, the controller may generate an offset output value (VO) to more rapidly vary the fuel supply or ignition timing, with the offset input value (VI) being selected for example to compensate for the resulting change in the control input (I1) from the cylinder to the balancing algorithm, or to provide additional, more gradual adjustment to further mitigate the knock condition.
    Type: Application
    Filed: June 5, 2019
    Publication date: December 12, 2019
    Applicant: Caterpillar Motoren GmbH & Co. KG
    Inventors: Eike Sixel, Scott Fiveland, Aradhita Chakrabarty, Daniel Wester, Hannes Marscheider, Andre Schmidt