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).

  • Publication number: 20180026278
    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: Application
    Filed: December 2, 2016
    Publication date: January 25, 2018
    Inventors: Bu Kil Kwon, Duck Whan Kim, Se Kwon Jung, Ik Jae Son, Hyo Sub Shim
  • Publication number: 20180023722
    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: Application
    Filed: November 30, 2016
    Publication date: January 25, 2018
    Inventors: Bu Kil Kwon, Se Kwon Jung, Hyo Sub Shim
  • Patent number: 9859577
    Abstract: A hydrogen feed and recirculation device for a fuel cell system supplies hydrogen from a hydrogen tank and unreacted recirculated hydrogen discharged from a stack to the stack. The hydrogen feed and recirculation device can supply hydrogen to the stack through a first nozzle when hydrogen supply pressure is low and supply the hydrogen to the stack through a second nozzle using a Coanda Effect other than the first nozzle when the hydrogen supply pressure is high to satisfy a required hydrogen supply amount through an entire operating area of the fuel cell and prevent nozzle vibration and noise generation.
    Type: Grant
    Filed: December 5, 2015
    Date of Patent: January 2, 2018
    Assignee: Hyundai Motor Company
    Inventors: Yong Gyu Noh, Sun Bo Shim, Se Kwon Jung
  • Patent number: 9823229
    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: December 14, 2014
    Date of Patent: November 21, 2017
    Assignees: Hyundai Motor Company, Ajou University Industry-Academic Cooperation Foundation
    Inventors: Yong Gyu Noh, Se Kwon Jung, Chi Myung Kim, Hyung Tak Seo, Yeong An Lee
  • Publication number: 20170309932
    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: Application
    Filed: September 19, 2016
    Publication date: October 26, 2017
    Inventors: Bu Kil Kwon, Se Kwon Jung, Hyun Joon Lee, Hyo Sub Shim
  • Publication number: 20170301931
    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: Application
    Filed: September 27, 2016
    Publication date: October 19, 2017
    Inventors: Se Kwon JUNG, Ho June BAE, Ji Hyun SHIM, Hyung Ki KIM
  • Publication number: 20170179509
    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.
    Type: Application
    Filed: July 6, 2016
    Publication date: June 22, 2017
    Inventors: Se Kwon Jung, Hyo Sub Shim, Bu Kil Kwon
  • Publication number: 20170179511
    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: Application
    Filed: September 27, 2016
    Publication date: June 22, 2017
    Inventors: Se Kwon Jung, Bu Kil Kwon
  • Patent number: 9601797
    Abstract: A fuel cell stack manifold having an ejector function of which the manufacturing cost and the weight can be reduced by optimizing hydrogen supply and recirculation channels and removing other members. hardware without a separate ejector structure for additionally attaching an ejector, of which the productivity can be improved by removing from an ejector assembly process. The fuel cell system minimizes joints through which hydrogen may leak, by implementing a new structure of a manifold added with an ejector function by integrally forming/manufacturing a stack manifold having a venturi and diffuser structure and adding a nozzle thereto.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: March 21, 2017
    Assignee: Hyundai Motor Company
    Inventors: Se Kwon Jung, Duck Whan Kim, Yong Gyu Noh, Bu Kil Kwon
  • Publication number: 20170077532
    Abstract: A hydrogen feed and recirculation device for a fuel cell system supplies hydrogen from a hydrogen tank and unreacted recirculated hydrogen discharged from a stack to the stack. The hydrogen feed and recirculation device can supply hydrogen to the stack through a first nozzle when hydrogen supply pressure is low and supply the hydrogen to the stack through a second nozzle using a Coanda Effect other than the first nozzle when the hydrogen supply pressure is high to satisfy a required hydrogen supply amount through an entire operating area of the fuel cell and prevent nozzle vibration and noise generation.
    Type: Application
    Filed: December 5, 2015
    Publication date: March 16, 2017
    Inventors: Yong Gyu Noh, Sun Bo Shim, Se Kwon Jung
  • Patent number: 9368806
    Abstract: An ejector for supplying a fuel, such as hydrogen, to a stack in a fuel cell system can automatically move a position of a nozzle according to an increase or a decrease of a system load. As a result, it is possible to control a necessary supply of hydrogen and a recirculation flow rate by selecting an area of a nozzle throat in the fuel cell system using the ejector, and specifically, of being automatically controlled to supply hydrogen through a small nozzle at a low load, such that a recirculation amount is increased.
    Type: Grant
    Filed: December 7, 2014
    Date of Patent: June 14, 2016
    Assignee: Hyundai Motor Company
    Inventors: Yong Gyu Noh, Se Kwon Jung
  • Publication number: 20160054277
    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: December 14, 2014
    Publication date: February 25, 2016
    Inventors: Yong Gyu Noh, Se Kwon Jung, Chi Myung Kim, Hyung Tak Seo, Yeong An Lee
  • Publication number: 20150333339
    Abstract: An ejector for supplying a fuel, such as hydrogen, to a stack in a fuel cell system can automatically move a position of a nozzle according to an increase or a decrease of a system load. As a result, it is possible to control a necessary supply of hydrogen and a recirculation flow rate by selecting an area of a nozzle throat in the fuel cell system using the ejector, and specifically, of being automatically controlled to supply hydrogen through a small nozzle at a low load, such that a recirculation amount is increased.
    Type: Application
    Filed: December 7, 2014
    Publication date: November 19, 2015
    Inventors: Yong Gyu Noh, Se Kwon Jung
  • Publication number: 20150214566
    Abstract: A fuel cell stack manifold having an ejector function of which the manufacturing cost and the weight can be reduced by optimizing hydrogen supply and recirculation channels and removing other members. hardware without a separate ejector structure for additionally attaching an ejector, of which the productivity can be improved by removing from an ejector assembly process. The fuel cell system minimizes joints through which hydrogen may leak, by implementing a new structure of a manifold added with an ejector function by integrally forming/manufacturing a stack manifold having a venturi and diffuser structure and adding a nozzle thereto.
    Type: Application
    Filed: October 21, 2014
    Publication date: July 30, 2015
    Inventors: Se Kwon Jung, Duck Whan Kim, Yong Gyu Noh, Bu Kil Kwon
  • Patent number: 9029032
    Abstract: The present invention provides an apparatus for controlling hydrogen supply of a fuel cell system and a method for controlling the same. The apparatus includes a jet pump, a proportional control solenoid valve, and a controller. The jet pump is disposed at the side of an inlet of a fuel cell stack and performs supply and recirculation of hydrogen into the fuel cell stack. The proportional control solenoid valve is connected to a hydrogen supply line and fluidly communicates with a nozzle inlet of the jet pump to control the hydrogen supply to the jet pump. The controller controls an operation of the proportional control solenoid valve according to a power of the fuel cell system. Here, the controller controls the operation of the proportional control solenoid valve according to a pulse flow control method at a low power section in which a current power is lower than a predetermined reference power.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: May 12, 2015
    Assignee: Hyundai Motor Company
    Inventors: Yong Gyu Noh, Se Kwon Jung, Ho June Bae
  • Publication number: 20130295482
    Abstract: Disclosed is a hydrogen supply system for a fuel cell, which has an integrated manifold block in which components for hydrogen supply are integrated and modulated. In particular, a hydrogen supply line, a hydrogen discharge line, and a hydrogen recirculation line are formed in a manifold block mounted on the outside of a plurality of stack modules of a fuel cell stack. Additionally, components of the hydrogen supply system including components for supplying and discharging hydrogen and components for recirculating hydrogen are integrally mounted in predetermined positions of the hydrogen supply line, the hydrogen discharge line, and the hydrogen recirculation line to modularize the manifold block and the components of the hydrogen supply system.
    Type: Application
    Filed: October 16, 2012
    Publication date: November 7, 2013
    Applicants: KIA MOTORS CORPORATION, HYUNDAI MOTOR COMPANY
    Inventors: Duck Whan Kim, Sae Hoon Kim, Young Bum Kum, Yong Gyu Noh, Se Kwon Jung, Hyun Joon Lee
  • Patent number: 8481218
    Abstract: The present invention provides a hydrogen exhaust system for a fuel cell vehicle, which is configured to actively control an exhaust path of hydrogen discharged from an anode of a fuel cell stack to maximize the safety of the vehicle by minimizing the possibility of explosion due to hydrogen exhaust and ensure the silence of the vehicle by minimizing noise generated during hydrogen exhaust. Moreover, the present invention provides a hydrogen exhaust system for a fuel cell vehicle, which can improve the performance and power of the fuel cell stack by supplying water discharged from the fuel cell stack to an air supply line of the fuel cell stack together with purge hydrogen discharged to a hydrogen exhaust line to increase the humidification performance of the fuel cell stack.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: July 9, 2013
    Assignee: Hyundai Motor Company
    Inventors: Bu Kil Kwon, Hyun Joon Lee, Hyo Sub Shim, Se Kwon Jung, Yong Sun Park
  • Publication number: 20120315559
    Abstract: The present invention provides an apparatus for controlling hydrogen supply of a fuel cell system and a method for controlling the same. The apparatus includes a jet pump, a proportional control solenoid valve, and a controller. The jet pump is disposed at the side of an inlet of a fuel cell stack and performs supply and recirculation of hydrogen into the fuel cell stack. The proportional control solenoid valve is connected to a hydrogen supply line and fluidly communicates with a nozzle inlet of the jet pump to control the hydrogen supply to the jet pump. The controller controls an operation of the proportional control solenoid valve according to a power of the fuel cell system. Here, the controller controls the operation of the proportional control solenoid valve according to a pulse flow control method at a low power section in which a current power is lower than a predetermined reference power.
    Type: Application
    Filed: November 8, 2011
    Publication date: December 13, 2012
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Yong Gyu Noh, Se Kwon Jung, Ho June Bae
  • Publication number: 20110048837
    Abstract: The present invention provides a hydrogen exhaust system for a fuel cell vehicle, which is configured to actively control an exhaust path of hydrogen discharged from an anode of a fuel cell stack to maximize the safety of the vehicle by minimizing the possibility of explosion due to hydrogen exhaust and ensure the silence of the vehicle by minimizing noise generated during hydrogen exhaust. Moreover, the present invention provides a hydrogen exhaust system for a fuel cell vehicle, which can improve the performance and power of the fuel cell stack by supplying water discharged from the fuel cell stack to an air supply line of the fuel cell stack together with purge hydrogen discharged to a hydrogen exhaust line to increase the humidification performance of the fuel cell stack.
    Type: Application
    Filed: November 24, 2009
    Publication date: March 3, 2011
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Bu Kil Kwon, Hyun Joon Lee, Hyo Sub Shim, Se Kwon Jung, Yong Sun Park