Patents by Inventor Se Kwon Jung

Se Kwon Jung 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: 11069910
    Abstract: A method is provided for controlling a hydrogen cut-off valve, which may be provided on a hydrogen supply line of a fuel cell system, in driving a fuel cell vehicle mounted with a hydrogen supply line including a high-pressure tank storing hydrogen, a hydrogen supply valve, and a hydrogen cut-off valve. The method includes: a step (a) of measuring a duty applying to the hydrogen supply valve and a step (b) of comparing the duty with a predetermined duty, in which when the duty is equal to or more than the predetermined duty, it is determined that the hydrogen supply line between the high-pressure tank and the hydrogen supply valve is abnormal.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: July 20, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Se Kwon Jung, Hyeon Seok Ban
  • Publication number: 20210072774
    Abstract: A pressure regulator for a fuel cell system may include: a housing having an inlet port into which gas is introduced, an outlet port through which gas is discharged, and an regulated pressure chamber connected to an outside through the outlet port; a piston moving up and down in the housing, having a main flow path penetrating through an inside of the housing and a pressure acting portion applying a pressure of gas in the regulated pressure chamber of the housing, and selectively communicating between the inlet port and the regulated pressure chamber of the housing through the main flow path as the piston moves up and down; and a spring provided in the housing to elastically support the pressure acting portion of the piston on an opposite side of the regulated pressure chamber.
    Type: Application
    Filed: November 11, 2020
    Publication date: March 11, 2021
    Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Se Kwon JUNG
  • Patent number: 10920900
    Abstract: A fuel supply valve is provided. The fuel supply valve includes a housing of the valve, a plunger and a hollow part. A cavity where the plunger moves is formed at one side of the housing and a contact area is formed between the housing and the plunger based on the movement of the plunger. Accordingly, fuel flow in the cavity is limited by the contact.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: February 16, 2021
    Assignee: Hyundai Motor Company
    Inventors: Bu Kil Kwon, Se Kwon Jung, Hyo Sub Shim
  • Publication number: 20200406744
    Abstract: A fuel supply valve for supplying fuel from a fuel tank to a fuel cell stack includes: a plunger having a hollow therein, a core part disposed on the plunger, and a block part disposed within the hollow to maintain airtightness between the core part and the plunger, and a space in which the airtightness of the hollow has been maintained by the plunger, the core part, and the block part is defined as a pressure chamber.
    Type: Application
    Filed: October 21, 2019
    Publication date: December 31, 2020
    Inventor: Se Kwon Jung
  • Patent number: 10852753
    Abstract: A pressure regulator for a fuel cell system may include: a housing having an inlet port into which gas is introduced, an outlet port through which gas is discharged, and an regulated pressure chamber connected to an outside through the outlet port; a piston moving up and down in the housing, having a main flow path penetrating through an inside of the housing and a pressure acting portion applying a pressure of gas in the regulated pressure chamber of the housing, and selectively communicating between the inlet port and the regulated pressure chamber of the housing through the main flow path as the piston moves up and down; and a spring provided in the housing to elastically support the pressure acting portion of the piston on an opposite side of the regulated pressure chamber.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: December 1, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Se Kwon Jung
  • Patent number: 10811709
    Abstract: A method of controlling purge of a fuel cell system for a vehicle is provided. The method determines whether a purge function is normally performed in controlling purge of discharging nitrogen, hydrogen, and vapor within an anode of a fuel cell system. Particularly, the method confirms whether purge is performed by measuring a duty or a current applied to a hydrogen supply valve and measuring a change in the duty before and after an application of a purge valve operation command while adjusting a pressure inside the anode, which supplies hydrogen, to be uniform. Further, a hydrogen supply amount supplied into an anode is estimated and a change rate of a hydrogen supply amount supplied to the anode and a hydrogen amount consumed during a generation of the fuel cell system are estimated during a purge function, to determine whether purge is actually performed based on the estimated information.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: October 20, 2020
    Assignee: Hyundai Motor Company
    Inventors: Se Kwon Jung, Bu Kil Kwon
  • Patent number: 10788140
    Abstract: A solenoid valve is provided to control a gas supply pressure such as a hydrogen supply valve of a fuel cell system. In particular, the solenoid valve includes: a valve body including a nozzle and a valve chamber, a nozzle opening/closing sheet, and a gas bypass hole formed on the valve body to communicate with a valve chamber of the valve body when the nozzle is closed and supply gas to a first chamber of the valve chamber through the gas bypass hole. With this arrangement, the solenoid valve may inhibit gas leak that can occur in the nozzle due to a diameter error of the nozzle due to a production deviation and a production deviation of a regulator.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: September 29, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Nam Woo Lee, Se Kwon Jung
  • Patent number: 10749192
    Abstract: A hydrogen consumption measuring method for a fuel cell system includes steps of: calculating an amount of hydrogen consumed for a representative section from a first pressure at a time when hydrogen is supplied into an anode and a second pressure at a time when the hydrogen is no longer supplied to the anode; and calculating a total amount of hydrogen consumed by accumulating amounts of hydrogen consumed from a plurality of sections.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: August 18, 2020
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Se Kwon Jung, Ho June Bae, Ji Hyun Shim, Hyung Ki Kim
  • Patent number: 10727507
    Abstract: A fuel cell system including a hydrogen shut-off valve and a hydrogen supply valve connected therewith, the fuel cell system including: a holder capable of accommodating the hydrogen supply valve, wherein the holder includes a rupture part which may be formed at one point between the hydrogen supply valve and the hydrogen shut-off valve, and the hydrogen shut-off valve may be accommodated in one or more extended ends of the holder, and when the rupture part is cut off by external shock the hydrogen shut-off valve and the hydrogen supply valve are disconnected from each other.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: July 28, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Se Kwon Jung, Hyo Sub Shim, Bu Kil Kwon
  • Publication number: 20200089260
    Abstract: A pressure regulator for a fuel cell system may include: a housing having an inlet port into which gas is introduced, an outlet port through which gas is discharged, and an regulated pressure chamber connected to an outside through the outlet port; a piston moving up and down in the housing, having a main flow path penetrating through an inside of the housing and a pressure acting portion applying a pressure of gas in the regulated pressure chamber of the housing, and selectively communicating between the inlet port and the regulated pressure chamber of the housing through the main flow path as the piston moves up and down; and a spring provided in the housing to elastically support the pressure acting portion of the piston on an opposite side of the regulated pressure chamber.
    Type: Application
    Filed: December 5, 2018
    Publication date: March 19, 2020
    Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Se Kwon JUNG
  • Publication number: 20200018414
    Abstract: A solenoid valve is provided to control a gas supply pressure such as a hydrogen supply valve of a fuel cell system. In particular, the solenoid valve includes: a valve body including a nozzle and a valve chamber, a nozzle opening/closing sheet, and a gas bypass hole formed on the valve body to communicate with a valve chamber of the valve body when the nozzle is closed and supply gas to a first chamber of the valve chamber through the gas bypass hole. With this arrangement, the solenoid valve may inhibit gas leak that can occur in the nozzle due to a diameter error of the nozzle due to a production deviation and a production deviation of a regulator.
    Type: Application
    Filed: November 16, 2018
    Publication date: January 16, 2020
    Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Nam Woo LEE, Se Kwon JUNG
  • Patent number: 10403912
    Abstract: An anode discharge valve for a fuel cell system includes a valve main body which is installed in a hydrogen recirculation line of a fuel cell stack; a drive shaft which is rotatably installed in the valve main body, and coupled to an opening member which selectively opens a hydrogen discharge port by being rotated; and a mechanism which is connected to a hydrogen inlet port of the valve main body so as to form a hydrogen inflow path, and operates to rotate the drive shaft as a pressure of hydrogen inflowing through the hydrogen inflow path increases.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: September 3, 2019
    Assignee: Hyundai Motor Company
    Inventors: Bu Kil Kwon, Se Kwon Jung, Hyun Joon Lee, Hyo Sub Shim
  • Patent number: 10367209
    Abstract: A recycling system in which anode off gas of a fuel cell is recycled to a stack includes a purge flow path purging the anode off gas passing through the stack, and a sprayer spraying pure gas supplied from a fuel tank to the stack. The sprayer is disposed on a path where the anode off gas passing through the stack is discharged, the purge flow path is spaced a certain distance from the sprayer, and the anode off gas passing through the stack is mixed with the pure gas by suction force of the sprayer to be introduced to the stack, thereby being recycled.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: July 30, 2019
    Assignee: Hyundai Motor Company
    Inventors: Bu Kil Kwon, Duck Whan Kim, Se Kwon Jung, Ik Jae Son, Hyo Sub Shim
  • Publication number: 20190081343
    Abstract: A fuel supply valve configured to supply fuel from a fuel tank to a stack is provided. The fuel supply valve includes a plunger that has a hollow portion and a housing having with a cavity in which the plunger is configured to move. Additionally, a contact member is disposed between the housing and the plunger to be in contact both with one side of the housing and with one side of the plunger, the contact member maintaining airtightness between the housing and the plunger.
    Type: Application
    Filed: December 14, 2017
    Publication date: March 14, 2019
    Inventor: Se Kwon Jung
  • Patent number: 10184926
    Abstract: A hydrogen sensor and a method for manufacturing the same are provided. The hydrogen sensor includes a metal oxide layer formed over a substrate, and a catalytic pattern that is formed over the metal oxide layer. Further, a protective layer is formed over the catalytic pattern.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: January 22, 2019
    Assignees: Hyundai Motor Company, Ajou University Industry-Academic Cooperation Foundation, Kia Motors Corporation
    Inventors: Yong Gyu Noh, Se Kwon Jung, Chi Myung Kim, Hyung Tak Seo, Yeong An Lee
  • Patent number: 10030785
    Abstract: A valve for a fuel cell serves to discharge a fluid in a fuel cell system to the outside or other locations of the fuel cell system. The valve is mounted with a pressure transmission unit which is connected between a valve flow path unit having an inner flow path for moving a fluid and a solenoid unit for generating power for opening and closing the inner flow path of the valve flow path unit, and transmits pressure between the valve flow path unit and the solenoid unit, so as to minimize an operating load of the solenoid unit by minimizing a pressure difference between the valve flow path unit and the solenoid unit, regardless of factors such as working pressure and a temperature in the fuel cell system.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: July 24, 2018
    Assignee: Hyundai Motor Company
    Inventors: Se Kwon Jung, Hyo Sub Shim, Bu Kil Kwon
  • Publication number: 20180175417
    Abstract: A method is provided for controlling a hydrogen cut-off valve, which may be provided on a hydrogen supply line of a fuel cell system, in driving a fuel cell vehicle mounted with a hydrogen supply line including a high-pressure tank storing hydrogen, a hydrogen supply valve, and a hydrogen cut-off valve. The method includes: a step (a) of measuring a duty applying to the hydrogen supply valve and a step (b) of comparing the duty with a predetermined duty, in which when the duty is equal to or more than the predetermined duty, it is determined that the hydrogen supply line between the high-pressure tank and the hydrogen supply valve is abnormal.
    Type: Application
    Filed: November 10, 2017
    Publication date: June 21, 2018
    Inventors: Se Kwon Jung, Hyeon Seok BAN
  • Publication number: 20180175422
    Abstract: A fuel cell system including a hydrogen shut-off valve and a hydrogen supply valve connected therewith, the fuel cell system including: a holder capable of accommodating the hydrogen supply valve, wherein the holder includes a rupture part which may be formed at one point between the hydrogen supply valve and the hydrogen shut-off valve, and the hydrogen shut-off valve may be accommodated in one or more extended ends of the holder, and when the rupture part is cut off by external shock the hydrogen shut-off valve and the hydrogen supply valve are disconnected from each other.
    Type: Application
    Filed: June 2, 2017
    Publication date: June 21, 2018
    Inventors: Se Kwon JUNG, Hyo Sub SHIM, Bu Kil KWON
  • Publication number: 20180073657
    Abstract: A structure for preventing vibration of a solenoid valve includes: a plunger which opens and closes a flow path by moving inside the solenoid valve; a yoke attached to an inner surface of a valve core; and a friction member disposed along an outer circumferential surface of the plunger between the plunger and the yoke, in which the friction member presses the yoke between the yoke and the plunger.
    Type: Application
    Filed: December 19, 2016
    Publication date: March 15, 2018
    Inventors: Se Kwon JUNG, Bu Kil KWON
  • Publication number: 20180045695
    Abstract: A hydrogen sensor and a method for manufacturing the same are provided. The hydrogen sensor includes a metal oxide layer formed over a substrate, and a catalytic pattern that is formed over the metal oxide layer. Further, a protective layer is formed over the catalytic pattern.
    Type: Application
    Filed: October 23, 2017
    Publication date: February 15, 2018
    Inventors: Yong Gyu Noh, Se Kwon Jung, Chi Myung Kim, Hyung Tak Seo, Yeong An Lee