Patents by Inventor Jun Il YI

Jun Il YI 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: 11433867
    Abstract: The present disclosure relates to an electric brake system for an electric vehicle, which is more economical by simplifying a configuration of an electric vehicle that includes a main service brake and an electromagnetic brake, the electric brake system including an inductor, in a spherical shape, formed so that a drive axle penetrates through a center portion of the inductor; a plurality of springs inserted into holes defined in the inductor; an armature, in a disk shape, provided to contact the spring; and a friction disk mounted on a side of a motor, where a braking force is generated by operating the friction disk toward the armature.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: September 6, 2022
    Assignee: DOOSAN INDUSTRIAL VEHICLE CO., LTD.
    Inventor: Jun Il Yi
  • 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
  • Publication number: 20200198612
    Abstract: The present disclosure relates to an electric brake system for an electric vehicle, which is more economical by simplifying a configuration of an electric vehicle that includes a main service brake and an electromagnetic brake, the electric brake system including an inductor, in a spherical shape, formed so that a drive axle penetrates through a center portion of the inductor; a plurality of springs inserted into holes defined in the inductor; an armature, in a disk shape, provided to contact the spring; and a friction disk mounted on a side of a motor, where a braking force is generated by operating the friction disk toward the armature.
    Type: Application
    Filed: December 18, 2019
    Publication date: June 25, 2020
    Applicant: DOOSAN CORPORATION
    Inventor: Jun Il YI
  • 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
  • Publication number: 20190218083
    Abstract: A forklift according to an exemplary embodiment of the present disclosure includes: a first hydraulic pump and a second hydraulic pump each of which generates a working fluid; a lift cylinder which raises or lowers a carriage; a first hydraulic line which supplies the working fluid from the first hydraulic pump to the lift cylinder and a second hydraulic line which supplies the working fluid from the second hydraulic pump to the lift cylinder; a first lift spool which controls the working fluid to be supplied to the lift cylinder through the first hydraulic line and a second lift spool which controls the working fluid to be supplied to the lift cylinder through the second hydraulic line; a first pilot line which transmits a pilot signal for operating the first lift spool and a second pilot line which transmits a pilot signal for operating the second lift spool; and an opening/closing valve which selectively closes any one of the first pilot line and the second pilot line.
    Type: Application
    Filed: August 24, 2017
    Publication date: July 18, 2019
    Applicant: DOOSAN CORPORATION
    Inventors: Deok Rae KIM, Yong Seok RYU, Byung Kwon LEE, Jun Il YI