Patents by Inventor Yongsoon Yoon

Yongsoon Yoon 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).

  • Patent number: 11905904
    Abstract: Systems and apparatuses include an engine, an aftertreatment system including a catalyst, and a controller coupled to the aftertreatment system and the engine. During a warmup period for an engine, the controller determines a value regarding a mass flow rate of exhaust gas based on information received from at least one of the engine or the aftertreatment system. The controller receives a target value regarding the mass flow rate of the exhaust gas. The controller controls at least one of the engine, the aftertreatment system, or at least one component associated therewith to reach or attempt to reach the target value regarding the mass flow rate of the exhaust gas.
    Type: Grant
    Filed: August 9, 2022
    Date of Patent: February 20, 2024
    Assignee: Cummins Inc.
    Inventors: Avra Brahma, Yongsoon Yoon
  • Patent number: 11754007
    Abstract: A system and method of exhaust gas recirculation (EGR) in an internal combustion engine are provided. The EGR system includes a first EGR flow path and a second EGR flow path independent of the first EGR flow path that are each configured to recirculate high pressure exhaust from the exhaust system back to the engine intake system. The system includes a controller in operable communication with the EGR system configured to selectively control an amount of EGR flow through at least one of the first and second EGR flow paths.
    Type: Grant
    Filed: August 8, 2022
    Date of Patent: September 12, 2023
    Assignee: Cummins Inc.
    Inventors: Olumayokun Ogunbekun, Sriram S. Popuri, Scott Robert Bardakjy, Avra Brahma, Yongsoon Yoon
  • Patent number: 11578675
    Abstract: A system for detecting and controlling air-fuel ratio imbalance conditions between cylinders of an internal combustion engine having a plurality of cylinders is disclosed.
    Type: Grant
    Filed: October 27, 2020
    Date of Patent: February 14, 2023
    Assignee: Cummins Inc.
    Inventors: Avra Brahma, Yongsoon Yoon
  • Publication number: 20220403803
    Abstract: A system and method of exhaust gas recirculation (EGR) in an internal combustion engine are provided. The EGR system includes a first EGR flow path and a second EGR flow path independent of the first EGR flow path that are each configured to recirculate high pressure exhaust from the exhaust system back to the engine intake system. The system includes a controller in operable communication with the EGR system configured to selectively control an amount of EGR flow through at least one of the first and second EGR flow paths.
    Type: Application
    Filed: August 8, 2022
    Publication date: December 22, 2022
    Inventors: Olumayokun Ogunbekun, Sriram S. Popuri, Scott Robert Bardakjy, Avra Brahma, Yongsoon Yoon
  • Publication number: 20220381193
    Abstract: Systems and apparatuses include an engine, an aftertreatment system including a catalyst, and a controller coupled to the aftertreatment system and the engine. During a warmup period for an engine, the controller determines a value regarding a mass flow rate of exhaust gas based on information received from at least one of the engine or the aftertreatment system. The controller receives a target value regarding the mass flow rate of the exhaust gas. The controller controls at least one of the engine, the aftertreatment system, or at least one component associated therewith to reach or attempt to reach the target value regarding the mass flow rate of the exhaust gas.
    Type: Application
    Filed: August 9, 2022
    Publication date: December 1, 2022
    Applicant: Cummins Inc.
    Inventors: Avra Brahma, Yongsoon Yoon
  • Patent number: 11512660
    Abstract: A system for detecting and controlling misfire and/or AFR imbalance conditions in cylinders of an internal combustion engine having a plurality of cylinders is disclosed.
    Type: Grant
    Filed: June 9, 2020
    Date of Patent: November 29, 2022
    Assignee: Cummins Inc.
    Inventors: Yongsoon Yoon, Avra Brahma
  • Patent number: 11428181
    Abstract: Systems and apparatuses include an aftertreatment system including a catalyst, and a controller coupled to the aftertreatment system. During a warmup period for an engine coupled to the catalyst, the controller is configured to determine a value of a catalyst heating metric indicative of an amount of emissions produced per unit of exhaust energy based on information received from the engine and the aftertreatment system, and control at least one of a turbocharger, a fuel injection system, or an Exhaust Gas Recirculation (EGR) system to reach a target value of the catalyst heating metric.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: August 30, 2022
    Assignee: Cummins Inc.
    Inventors: Avra Brahma, Yongsoon Yoon
  • Publication number: 20210301743
    Abstract: Systems and apparatuses include an aftertreatment system including a catalyst, and a controller coupled to the aftertreatment system. During a warmup period for an engine coupled to the catalyst, the controller is configured to determine a value of a catalyst heating metric indicative of an amount of emissions produced per unit of exhaust energy based on information received from the engine and the aftertreatment system, and control at least one of a turbocharger, a fuel injection system, or an Exhaust Gas Recirculation (EGR) system to reach a target value of the catalyst heating metric.
    Type: Application
    Filed: March 25, 2020
    Publication date: September 30, 2021
    Inventors: Avra Brahma, Yongsoon Yoon
  • Publication number: 20210047975
    Abstract: A system for detecting and controlling air-fuel ratio imbalance conditions between cylinders of an internal combustion engine having a plurality of cylinders is disclosed.
    Type: Application
    Filed: October 27, 2020
    Publication date: February 18, 2021
    Inventors: Avra Brahma, Yongsoon Yoon
  • Patent number: 10914253
    Abstract: A system for detecting and controlling air-fuel ratio imbalance conditions between cylinders of an internal combustion engine having a plurality of cylinders is disclosed.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: February 9, 2021
    Assignee: Cummins Inc.
    Inventors: Avra Brahma, Yongsoon Yoon
  • Publication number: 20200392917
    Abstract: A system for detecting and controlling misfire and/or AFR imbalance conditions in cylinders of an internal combustion engine having a plurality of cylinders is disclosed.
    Type: Application
    Filed: June 9, 2020
    Publication date: December 17, 2020
    Inventors: Yongsoon Yoon, Avra Brahma
  • Patent number: 10539087
    Abstract: One embodiment is a method comprising operating an internal combustion engine system including multiple cylinders structured to combust a charge mixture and to output exhaust to an exhaust manifold, an electronic control system structured to control operation of the engine system and an exhaust manifold pressure (EMP) sensor structured to provide data to the electronic control system and performing an air-fuel ratio (AFR) imbalance diagnostic with the electronic control system. The AFR imbalance diagnostic may comprise the acts of processing the data to provide at least one output metric sample, determining an output metric statistic based on the at least one output metric sample, evaluating the output metric statistic relative to one or more predetermined criteria to identify an AFR imbalance condition, and providing an operator perceptible indication of the AFR imbalance condition.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: January 21, 2020
    Assignee: Cummins Inc.
    Inventors: Avra Brahma, Yongsoon Yoon
  • Publication number: 20190331038
    Abstract: A system for detecting and controlling air-fuel ratio imbalance conditions between cylinders of an internal combustion engine having a plurality of cylinders is disclosed.
    Type: Application
    Filed: June 3, 2019
    Publication date: October 31, 2019
    Inventors: Avra Brahma, Yongsoon Yoon
  • Patent number: 8442713
    Abstract: The present invention relates to an apparatus and a method for steering a vehicle, and more particularly to an apparatus and a method for steering an autonomous vehicle. One aspect of the present invention provides a method of steering a vehicle in an apparatus for steering the vehicle, the method comprising: (a) determining a first path by using a starting point and a destination of the vehicle; (b) generating an obstacle position signal when a plurality of obstacle sensors mounted on the vehicle detect an obstacle during an operation of the vehicle; (c) generating a parallax information using the obstacle position signal received from the plurality of the obstacle sensors; and (d) determining a second path avoiding the obstacle by using the parallax information. According to the method and the apparatus for steering a vehicle of the present invention, a vehicle may avoid obstacles in real-time in complex environments.
    Type: Grant
    Filed: January 13, 2009
    Date of Patent: May 14, 2013
    Assignee: Seoul National University Industry Foundation
    Inventors: Hyoun Jin Kim, Yongsoon Yoon
  • Publication number: 20110035086
    Abstract: The present invention relates to an apparatus and a method for steering a vehicle, and more particularly to an apparatus and a method for steering an autonomous vehicle. One aspect of the present invention provides a method of steering a vehicle in an apparatus for steering the vehicle, the method comprising: (a) determining a first path by using a starting point and a destination of the vehicle; (b) generating an obstacle position signal when a plurality of obstacle sensors mounted on the vehicle detect an obstacle during an operation of the vehicle; (c) generating a parallax information using the obstacle position signal received from the plurality of the obstacle sensors; and (d) determining a second path avoiding the obstacle by using the parallax information. According to the method and the apparatus for steering a vehicle of the present invention, a vehicle may avoid obstacles in real-time in complex environments.
    Type: Application
    Filed: January 13, 2009
    Publication date: February 10, 2011
    Inventors: Hyoun Jin Kim, Yongsoon Yoon