Patents by Inventor Junseok Chang
Junseok Chang 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).
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Patent number: 11794566Abstract: A hybrid electric vehicle comprises a set of wheels, a mechanical transmission adapted to provide torque to the set of wheels, an electric motor coupled to and providing motive force to the mechanical transmission, battery storage coupled to and supplying electrical power to the electric motor, and a gasoline compression ignition (GCI) engine coupled to at least one of the mechanical transmission and the electric motor so as to provide mechanical energy to the mechanical transmission and energy for operating the electric motor.Type: GrantFiled: January 16, 2019Date of Patent: October 24, 2023Assignee: SAUDI ARABIAN OIL COMPANYInventors: Hyun Woo Won, Junseok Chang, Kukwon Cho
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Patent number: 11674419Abstract: An engine system includes an engine configured to combust liquid natural gas and generate an exhaust gas comprising methane; a catalytic reactor coupled downstream of the engine and configured to convert methane into a product through one or more of oxidative coupling of methane (OCM) reaction and steam methane reforming (SMR) reaction; and a recirculation loop configured to recirculate at least a part of the product back to the engine.Type: GrantFiled: November 24, 2021Date of Patent: June 13, 2023Assignee: SAUDI ARABIAN OIL COMPANYInventors: Vallinayagam Raman, Seung-Hak Choi, Junseok Chang
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Publication number: 20230160328Abstract: An engine system includes an engine configured to combust liquid natural gas and generate an exhaust gas comprising methane; a catalytic reactor coupled downstream of the engine and configured to convert methane into a product through one or more of oxidative coupling of methane (OCM) reaction and steam methane reforming (SMR) reaction; and a recirculation loop configured to recirculate at least a part of the product back to the engine.Type: ApplicationFiled: November 24, 2021Publication date: May 25, 2023Applicant: SAUDI ARABIAN OIL COMPANYInventors: Vallinayagam Raman, Seung-Hak Choi, Junseok Chang
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Patent number: 11391230Abstract: A method for operating an internal combustion engine includes moving a piston downward from a top dead center position to a bottom dead center position expanding a combustion chamber in an intake stroke, dispensing a first portion of fuel into the combustion chamber, subsequent to moving the piston downward in the intake stroke, moving the piston upward in the vertical direction compressing the combustion chamber in a compression stroke, subsequent to moving the piston upward in the compression stroke, moving the piston downward in the vertical direction in an expansion stroke, while moving the piston downward in the vertical direction in the expansion stroke, dispensing a second portion of fuel into the combustion chamber, and while moving the piston downward in the expansion stroke, igniting at least a part of the first portion of fuel and the second portion of fuel.Type: GrantFiled: November 7, 2019Date of Patent: July 19, 2022Assignee: Saudi Arabian Oil CompanyInventors: Vallinayagam Raman, Yoann Viollet, Junseok Chang
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Publication number: 20220034268Abstract: A method for operating an internal combustion engine includes passing air to a separation unit, separating the air into a nitrogen-enriched air stream and an oxygen-enriched air stream with the separation unit, passing the nitrogen-enriched air stream to a mixing chamber in communication with the separation unit, detecting a nitrogen content within the nitrogen-enriched air stream, based at least in part on the detected nitrogen content within the nitrogen-enriched air stream, moving an air valve between a closed position, in which the air valve restricts flow of an air stream to the mixing chamber, and an open position, in which the air stream flows to the mixing chamber through the air valve, passing the nitrogen-enriched air stream to a combustion chamber, passing a fuel to the combustion chamber, and combusting the fuel and the nitrogen-enriched air stream within the combustion chamber, thereby moving a piston within the combustion chamber.Type: ApplicationFiled: March 4, 2021Publication date: February 3, 2022Applicant: Saudi Arabian Oil CompanyInventors: Vallinayagam Raman, Seung-Hak Choi, Junseok Chang
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Publication number: 20210140380Abstract: A method for operating an internal combustion engine includes moving a piston downward from a top dead center position to a bottom dead center position expanding a combustion chamber in an intake stroke, dispensing a first portion of fuel into the combustion chamber, subsequent to moving the piston downward in the intake stroke, moving the piston upward in the vertical direction compressing the combustion chamber in a compression stroke, subsequent to moving the piston upward in the compression stroke, moving the piston downward in the vertical direction in an expansion stroke, while moving the piston downward in the vertical direction in the expansion stroke, dispensing a second portion of fuel into the combustion chamber, and while moving the piston downward in the expansion stroke, igniting at least a part of the first portion of fuel and the second portion of fuel.Type: ApplicationFiled: November 7, 2019Publication date: May 13, 2021Applicant: Saudi Arabian Oil CompanyInventors: Vallinayagam Raman, Yoann Viollet, Junseok Chang
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Patent number: 10801422Abstract: A vehicular propulsion system, a vehicular fuel system and a method of operating an internal combustion engine. A separation unit that makes up a part of the fuel system may selectively receive and separate at least a portion of onboard fuel and a flowable adsorbent in order to separate the fuel into octane-enhanced and cetane-enhanced fuel components. A controller may be used to determine a particular operating condition of the internal combustion engine such that the onboard fuel can be sent to one or more combustion chambers within the internal combustion engine without first passing through the separation unit during one operating condition, or instead to the separation unit in situations where the internal combustion engine may require an octane-rich or cetane-rich mixture in another operating condition.Type: GrantFiled: August 26, 2019Date of Patent: October 13, 2020Assignee: Saudi Arabian Oil CompanyInventors: Esam Zaki Hamad, Eman AbdelHakim A. M. Tora, Amer A. Amer, Junseok Chang
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Patent number: 10760507Abstract: A vehicular propulsion system, a vehicular fuel system and a method of producing fuel for an internal combustion engine. A separation unit that makes up a part of the fuel system includes one or more adsorbent-based reaction chambers to selectively receive and separate at least a portion of onboard fuel into octane-enhanced and cetane-enhanced components. Regeneration of an adsorbate takes place through interaction with a solvent, while subsequent separation allows the solvent to be reused. A controller may be used to determine a particular operational condition of the internal combustion engine such that the onboard fuel can be sent to one or more combustion chambers within the internal combustion engine without first passing through the separation unit, or instead to the separation unit in situations where the internal combustion engine may require an octane-rich or cetane-rich mixture.Type: GrantFiled: July 24, 2019Date of Patent: September 1, 2020Assignee: Saudi Arabian Oil CompanyInventors: Esam Zaki Hamad, Eman AbdelHakim A. M. Tora, Amer A. Amer, Junseok Chang
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Patent number: 10724448Abstract: According to one or more embodiments, an internal combustion engine may be operated by a method including one or more of the steps of passing a first fuel and a second fuel into a combustion chamber of an engine cylinder to form a fuel mixture, and combusting the fuel mixture with a spark plug to translate the piston housed in the engine cylinder and rotate a crank shaft coupled to the piston. The engine cylinder may include a cylinder head and cylinder sidewalls, and the combustion chamber may be defined at least partially by the cylinder head, the cylinder sidewalls, and the piston. The first fuel may include a greater octane rating than the second fuel. The combustion chamber may include an end gas region and a central region, the central region more near to the spark plug than the end gas region.Type: GrantFiled: June 25, 2018Date of Patent: July 28, 2020Assignee: Saudi Arabian Oil CompanyInventors: Yoann Viollet, Junseok Chang, Amer Ahmed Amer
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Publication number: 20200223424Abstract: A hybrid electric vehicle comprises a set of wheels, a mechanical transmission adapted to provide torque to the set of wheels, an electric motor coupled to and providing motive force to the mechanical transmission, battery storage coupled to and supplying electrical power to the electric motor, and a gasoline compression ignition (GCI) engine coupled to at least one of the mechanical transmission and the electric motor so as to provide mechanical energy to the mechanical transmission and energy for operating the electric motor.Type: ApplicationFiled: January 16, 2019Publication date: July 16, 2020Inventors: Hyun Woo WON, Junseok Chang, Kukwon Cho
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Patent number: 10598100Abstract: A vehicular propulsion system, a vehicular fuel system and a method of operating an internal combustion engine. A separation unit that makes up a part of the fuel system includes one or more adsorbent-based chambers such that the separation unit may selectively receive and separate at least a portion of onboard fuel into octane-enhanced and cetane-enhanced fuel components. A supply tank includes three compartments where the first contains the onboard fuel, the second receives a vaporized adsorbate from the separation unit and condenses at least a part of it into one of an octane-rich fuel component or a cetane-rich fuel component, while the third may either store the condensed and enriched fuel component or help condense more of the vaporized adsorbate. The condensing takes place through heat exchange between the onboard fuel and the vaporized adsorbate that are present within the various compartments of the supply tank.Type: GrantFiled: June 26, 2019Date of Patent: March 24, 2020Assignee: Saudi Arabian Oil CompanyInventors: Esam Zaki Hamad, Eman AbdelHakim A. M. Tora, Amer A. Amer, Junseok Chang
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Publication number: 20190390615Abstract: According to one or more embodiments, an internal combustion engine may be operated by a method including one or more of the steps of passing a first fuel and a second fuel into a combustion chamber of an engine cylinder to form a fuel mixture, and combusting the fuel mixture with a spark plug to translate the piston housed in the engine cylinder and rotate a crank shaft coupled to the piston. The engine cylinder may include a cylinder head and cylinder sidewalls, and the combustion chamber may be defined at least partially by the cylinder head, the cylinder sidewalls, and the piston. The first fuel may include a greater octane rating than the second fuel. The combustion chamber may include an end gas region and a central region, the central region more near to the spark plug than the end gas region.Type: ApplicationFiled: June 25, 2018Publication date: December 26, 2019Applicant: Saudi Arabian Oil CompanyInventors: Yoann Viollet, Junseok Chang, Amer Ahmed Amer
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Publication number: 20190376457Abstract: A vehicular propulsion system, a vehicular fuel system and a method of operating an internal combustion engine. A separation unit that makes up a part of the fuel system may selectively receive and separate at least a portion of onboard fuel and a flowable adsorbent in order to separate the fuel into octane-enhanced and cetane-enhanced fuel components. A controller may be used to determine a particular operating condition of the internal combustion engine such that the onboard fuel can be sent to one or more combustion chambers within the internal combustion engine without first passing through the separation unit during one operating condition, or instead to the separation unit in situations where the internal combustion engine may require an octane-rich or cetane-rich mixture in another operating condition.Type: ApplicationFiled: August 26, 2019Publication date: December 12, 2019Applicant: Saudi Arabian Oil CompanyInventors: Esam Zaki Hamad, Eman AbdelHakim A.M. Tora, Amer A. Amer, Junseok Chang
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Publication number: 20190368451Abstract: A vehicular propulsion system, a vehicular fuel system and a method of producing fuel for an internal combustion engine. A separation unit that makes up a part of the fuel system includes one or more adsorbent-based reaction chambers to selectively receive and separate at least a portion of onboard fuel into octane-enhanced and cetane-enhanced components. Regeneration of an adsorbate takes place through interaction with a solvent, while subsequent separation allows the solvent to be reused. A controller may be used to determine a particular operational condition of the internal combustion engine such that the onboard fuel can be sent to one or more combustion chambers within the internal combustion engine without first passing through the separation unit, or instead to the separation unit in situations where the internal combustion engine may require an octane-rich or cetane-rich mixture.Type: ApplicationFiled: July 24, 2019Publication date: December 5, 2019Applicant: Saudi Arabian Oil CompanyInventors: Esam Zaki Hamad, Eman AbdelHakim A.M. Tora, Amer A. Amer, Junseok Chang
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Publication number: 20190316531Abstract: A vehicular propulsion system, a vehicular fuel system and a method of operating an internal combustion engine. A separation unit that makes up a part of the fuel system includes one or more adsorbent-based chambers such that the separation unit may selectively receive and separate at least a portion of onboard fuel into octane-enhanced and cetane-enhanced fuel components. A supply tank includes three compartments where the first contains the onboard fuel, the second receives a vaporized adsorbate from the separation unit and condenses at least a part of it into one of an octane-rich fuel component or a cetane-rich fuel component, while the third may either store the condensed and enriched fuel component or help condense more of the vaporized adsorbate. The condensing takes place through heat exchange between the onboard fuel and the vaporized adsorbate that are present within the various compartments of the supply tank.Type: ApplicationFiled: June 26, 2019Publication date: October 17, 2019Applicant: Saudi Arabian Oil CompanyInventors: Esam Zaki Hamad, Eman AbdelHakim A.M. Tora, Amer A. Amer, Junseok Chang
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Publication number: 20190309695Abstract: According to one or more embodiments, an internal combustion engine may be operated by a method which includes one or more of injecting a first fuel and a second fuel into an engine cylinder to form a fuel mixture, and combusting the fuel mixture with a spark plug to translate a piston housed in the engine cylinder and rotate a crank shaft coupled to the piston. The first fuel may comprise a greater octane rating than the second fuel. A target CA50 may correspond to a minimum in specific fuel consumption of the fuel mixture. The spark plug may initiate combustion at a time such that the internal combustion engine operates with an operational CA50 that is within 20 degrees of the target CA50.Type: ApplicationFiled: April 9, 2018Publication date: October 10, 2019Applicant: Saudi Arabian Oil CompanyInventors: Kai James Morganti, Yoann Viollet, Robert Andrew Head, Junseok Chang
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Patent number: 10436126Abstract: A vehicular propulsion system, a vehicular fuel system and a method of operating an internal combustion engine. A separation unit that makes up a part of the fuel system includes one or more adsorbent-based chambers such that the separation unit may selectively receive and separate at least a portion of onboard fuel into octane-enhanced and cetane-enhanced components. Regeneration of an adsorbate takes place through a heat exchange relation with existing system infrastructure.Type: GrantFiled: January 31, 2018Date of Patent: October 8, 2019Assignee: Saudi Arabian Oil CompanyInventors: Esam Zaki Hamad, Eman AbdelHakim A. M. Tora, Amer A. Amer, Junseok Chang
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Publication number: 20190301373Abstract: A vehicular propulsion system, a vehicular fuel system and a method of producing fuel for an internal combustion engine. A separation unit that makes up a part of the fuel system includes one or more adsorbent-based reaction chambers to selectively receive and separate at least a portion of onboard fuel into octane-enhanced and cetane-enhanced components. Regeneration of an adsorbate takes place through interaction with a solvent, while subsequent separation allows the solvent to be reused. A controller may be used to determine a particular operational condition of the internal combustion engine such that the onboard fuel can be sent to one or more combustion chambers within the internal combustion engine without first passing through the separation unit, or instead to the separation unit in situations where the internal combustion engine may require an octane-rich or cetane-rich mixture.Type: ApplicationFiled: March 29, 2018Publication date: October 3, 2019Applicant: Saudi Arabian Oil CompanyInventors: Esam Zaki Hamad, Eman AbdelHakim A.M. Tora, Amer A. Amer, Junseok Chang
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Publication number: 20190301372Abstract: A vehicular propulsion system, a vehicular fuel system and a method of operating an internal combustion engine. A separation unit that makes up a part of the fuel system may selectively receive and separate at least a portion of onboard fuel and a flowable adsorbent in order to separate the fuel into octane-enhanced and cetane-enhanced fuel components. A controller may be used to determine a particular operating condition of the internal combustion engine such that the onboard fuel can be sent to one or more combustion chambers within the internal combustion engine without first passing through the separation unit during one operating condition, or instead to the separation unit in situations where the internal combustion engine may require an octane-rich or cetane-rich mixture in another operating condition.Type: ApplicationFiled: March 29, 2018Publication date: October 3, 2019Applicant: Saudi Arabian Oil CompanyInventors: Esam Zaki Hamad, Eman AbdelHakim A.M. Tora, Amer A. Amer, Junseok Chang
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Patent number: 10422288Abstract: A vehicular propulsion system, a vehicular fuel system and a method of operating an internal combustion engine. A separation unit that makes up a part of the fuel system may selectively receive and separate at least a portion of onboard fuel and a flowable adsorbent in order to separate the fuel into octane-enhanced and cetane-enhanced fuel components. A controller may be used to determine a particular operating condition of the internal combustion engine such that the onboard fuel can be sent to one or more combustion chambers within the internal combustion engine without first passing through the separation unit during one operating condition, or instead to the separation unit in situations where the internal combustion engine may require an octane-rich or cetane-rich mixture in another operating condition.Type: GrantFiled: March 29, 2018Date of Patent: September 24, 2019Assignee: Saudi Arabian Oil CompanyInventors: Esam Zaki Hamad, Eman AbdelHakim A. M. Tora, Amer A. Amer, Junseok Chang