Patents by Inventor Rohit Saha

Rohit Saha 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: 20220090544
    Abstract: A method includes detecting a change in a loading condition on an engine based on use of an implement system including a pump driven by the engine, an actuator fluidly coupled to the pump, and an implement repositionable with the actuator. The change in the loading condition is detected based on a variation in a command signal from a joystick that controls movement of the implement, an outlet pressure of the pump, a displacement of the pump, and/or an engagement signal of a clutch positioned to selectively couple the pump to the engine. The method further includes commanding a fueling system to increase an amount of fuel provided to the engine and/or an air handling system of the machine to increase an amount of air and/or a boost pressure of the air provided to the engine in response to detection of an increasing loading condition based on the variation.
    Type: Application
    Filed: December 30, 2019
    Publication date: March 24, 2022
    Applicant: Cummins Inc.
    Inventors: Chirag Dhirajlal Ambaliya, Randal L. Bergstedt, Sunil Dhulipati, Hari Donepudi, Rohit Saha, Jagdeep I. Singh, Sumit Tripathi
  • Patent number: 11230161
    Abstract: A method, system, and apparatus are provided for optimizing control of the rotational speed of a fan in a vehicle so as to reduce the aerodynamic drag of a vehicle in a given operating parameter, and accordingly, to improve fuel efficiency of operation of the vehicle. Certain exemplary embodiments include determining an optimized speed of rotation of a cooling fan of the vehicle for reducing overall fuel demand in given operating conditions, and controlling rotation speed of the fan at the optimized speed in order to minimize fueling demand of a prime mover of the vehicle.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: January 25, 2022
    Assignee: Cummins Inc.
    Inventors: Rohit Saha, Long K. Hwang
  • Publication number: 20210388777
    Abstract: Systems, apparatus, and methods are disclosed that include an internal combustion engine having a plurality of cylinders operable by a valve actuation mechanism. A cylinder deactivation operation is modified in response to determining a cyclical operation mode of the engine.
    Type: Application
    Filed: August 30, 2021
    Publication date: December 16, 2021
    Inventors: Jennifer Kay Light-Holets, Rohit Saha, Timothy Shipp, Daniel J. Mohr
  • Publication number: 20210039019
    Abstract: A de-aeration tank comprises a housing defining an interior volume. A first baffle comprises a first baffle first portion coupled to a first baffle second portion. The first baffle first portion extends away from the first baffle second portion at a nonzero angle, and the first baffle second portion is positioned so as to come into contact with the fluid entering the housing through an inlet vent. A first air vent is defined by a first distance between the first portion and the housing. A second baffle comprises a second baffle first portion coupled to the second baffle second portion. The second baffle first portion extends away from the second baffle second portion at a nonzero angle, and the second baffle second portion is positioned so as to come into contact with the fluid directed by the second portion and direct the fluid toward the bottom of the interior volume.
    Type: Application
    Filed: August 4, 2020
    Publication date: February 11, 2021
    Applicant: CUMMINS INC.
    Inventors: Randal L. Bergstedt, Rohit Saha, Eric P. Greene
  • Patent number: 10913441
    Abstract: Systems and apparatuses of a vehicle include an engine control circuit structured to control an engine speed, a transmission control circuit structured to control a transmission, an implement control circuit structured to control an implement, and a processing circuit structured to receive a travel signal indicative of a travel mode for the vehicle, or an implement signal indicative of an implement mode for the vehicle. In response to operating in the travel mode, the transmission control circuit determines the engine speed and the implement control circuit limits an implement torque to maintain the engine speed. In response to operating in the implement mode, the engine control circuit determines the engine speed and the transmission control circuit limits a propulsion torque to maintain the engine speed.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: February 9, 2021
    Assignee: Cummins, Inc.
    Inventor: Rohit Saha
  • Publication number: 20200317182
    Abstract: Systems and apparatuses of a vehicle include an engine control circuit structured to control an engine speed, a transmission control circuit structured to control a transmission, an implement control circuit structured to control an implement, and a processing circuit structured to receive a travel signal indicative of a travel mode for the vehicle, or an implement signal indicative of an implement mode for the vehicle. In response to operating in the travel mode, the transmission control circuit determines the engine speed and the implement control circuit limits an implement torque to maintain the engine speed. In response to operating in the implement mode, the engine control circuit determines the engine speed and the transmission control circuit limits a propulsion torque to maintain the engine speed.
    Type: Application
    Filed: December 17, 2018
    Publication date: October 8, 2020
    Applicant: Cummins, Inc.
    Inventor: Rohit Saha
  • Publication number: 20200215875
    Abstract: A method, system, and apparatus are provided for optimizing control of the rotational speed of a fan in a vehicle so as to reduce the aerodynamic drag of a vehicle in a given operating parameter, and accordingly, to improve fuel efficiency of operation of the vehicle. Certain exemplary embodiments include determining an optimized speed of rotation of a cooling fan of the vehicle for reducing overall fuel demand in given operating conditions, and controlling rotation speed of the fan at the optimized speed in order to minimize fueling demand of a prime mover of the vehicle.
    Type: Application
    Filed: March 19, 2020
    Publication date: July 9, 2020
    Inventors: Rohit Saha, Long K. Hwang
  • Patent number: 10647175
    Abstract: A method, system, and apparatus are provided for optimizing control of the rotational speed of a fan in a vehicle so as to reduce the aerodynamic drag of a vehicle in a given operating parameter, and accordingly, to improve fuel efficiency of operation of the vehicle. Certain exemplary embodiments include determining an optimized speed of rotation of a cooling fan of the vehicle for reducing overall fuel demand in given operating conditions, and controlling rotation speed of the fan at the optimized speed in order to minimize fueling demand of a prime mover of the vehicle.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: May 12, 2020
    Assignee: Cummins Inc.
    Inventors: Rohit Saha, Long K. Hwang
  • Patent number: 10344695
    Abstract: An internal combustion engine operatively coupled with a variable load and an electronic control system operatively coupled with the internal combustion engine. The electronic control system is structured to receive an engine speed target value, a first engine speed feedback value, and a second engine speed feedback value. The electronic control system processes the first engine speed feedback value and the second engine speed feedback value to determine a feedforward correction value. The feedforward correction value is determined to correct for first variation between the second engine speed feedback value and the first engine speed feedback value due to variation in the variable load and to distinguish between the first variation and a second variation due to operation of the internal combustion engine.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: July 9, 2019
    Assignee: Cummins Inc.
    Inventors: Randal L. Bergstedt, Rohit Saha, Martin T. Books, Richard G. Varo, Jagdeep I. Singh, Bibhu Batchal Mahanta
  • Publication number: 20190143786
    Abstract: A method, system, and apparatus are provided for optimizing control of the rotational speed of a fan in a vehicle so as to reduce the aerodynamic drag of a vehicle in a given operating parameter, and accordingly, to improve fuel efficiency of operation of the vehicle. Certain exemplary embodiments include determining an optimized speed of rotation of a cooling fan of the vehicle for reducing overall fuel demand in given operating conditions, and controlling rotation speed of the fan at the optimized speed in order to minimize fueling demand of a prime mover of the vehicle.
    Type: Application
    Filed: October 23, 2018
    Publication date: May 16, 2019
    Inventors: Rohit Saha, Long K. Hwang