Patents by Inventor Byung Do CHOI

Byung Do CHOI 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).

  • System for regenerating DPF during operation of engine-powered forklift and method therefor
    Patent number: 11293319
    Abstract: The present disclosure is related to a system for regenerating a DPF and a method thereof. The system for regenerating a DPF during operation of an engine-powered forklift that includes the DPF for collecting particulate matter form exhaust gas discharged from an engine to an exhaust path includes: an engine control unit for controlling operation of the engine; an electro-hydraulic pump for discharging a working fluid that generates a hydraulic load; a control unit for determining a state of the forklift when a DPF regeneration request signal is received from the engine control unit, and controlling at least one of the hydraulic load of the electro-hydraulic pump and revolutions per minute of the engine according to the determined state of the forklift; and a diesel oxidation catalyst unit for regenerating the DPF according to the control of the control unit.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: April 5, 2022
    Assignee: DOOSAN CORPORATION
    Inventors: Hyun Kyu Kang, Byung Do Choi, Deok Rae Kim, Jun Il Yi
  • SYSTEM FOR REGENERATING DPF DURING OPERATION OF ENGINE-POWERED FORKLIFT AND METHOD THEREFOR
    Publication number: 20200123949
    Abstract: The present disclosure is related to a system for regenerating a DPF and a method thereof. The system for regenerating a DPF during operation of an engine-powered forklift that includes the DPF for collecting particulate matter form exhaust gas discharged from an engine to an exhaust path includes: an engine control unit for controlling operation of the engine; an electro-hydraulic pump for discharging a working fluid that generates a hydraulic load; a control unit for determining a state of the forklift when a DPF regeneration request signal is received from the engine control unit, and controlling at least one of the hydraulic load of the electro-hydraulic pump and revolutions per minute of the engine according to the determined state of the forklift; and a diesel oxidation catalyst unit for regenerating the DPF according to the control of the control unit.
    Type: Application
    Filed: December 28, 2017
    Publication date: April 23, 2020
    Applicant: DOOSAN CORPORATION
    Inventors: Hyun Kyu KANG, Byung Do CHOI, Deok Rae KIM, Jun Il YI