Patents by Inventor Ki Hyung Joo
Ki Hyung Joo 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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Publication number: 20230022875Abstract: A line pressure control method for a double clutch transmission (DCT) includes estimating a line pressure, which decreases with stoppage of an electric oil pump, based on a linear regression model using state variables of the DCT that are related to a line pressure change, and driving the electric oil pump when the line pressure estimated based on the linear regression model reaches a predetermined lower limit.Type: ApplicationFiled: March 10, 2022Publication date: January 26, 2023Applicants: Hyundai Motor Company, Kia CorporationInventors: Ki Hyung JOO, Young Ho KO
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Patent number: 11543027Abstract: A line pressure control method for a double clutch transmission (DCT) includes estimating a line pressure, which decreases with stoppage of an electric oil pump, based on a linear regression model using state variables of the DCT that are related to a line pressure change, and driving the electric oil pump when the line pressure estimated based on the linear regression model reaches a predetermined lower limit.Type: GrantFiled: March 10, 2022Date of Patent: January 3, 2023Assignees: Hyundai Motor Company, Kia CorporationInventors: Ki Hyung Joo, Young Ho Ko
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Patent number: 10738678Abstract: A correction method of NOx purifying efficiency of SDPF includes: measuring a temperature change per unit time inside the SDPF, determining whether the temperature change per unit time inside the SDPF is below a first predetermined value, determining whether a difference between a maximum value and a minimum value of temperature of respective parts inside the SDPF is below a second predetermined value if the temperature change per unit time inside the SDPF is below the first predetermined value, determining whether a temperature inside the SDPF is in a low temperature region if the difference between the maximum value and the minimum value of temperature of the respective parts inside the SDPF is below the second predetermined value, and performing a low temperature region correction if the temperature inside the SDPF is in the low temperature region.Type: GrantFiled: October 24, 2018Date of Patent: August 11, 2020Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION, FEV EUROPE GMBHInventors: Ki Hyung Joo, Myung Jong Lee, Jin Woo Park, Arun Palaniappan Muthukaruppan, Waldemar Josef Kansy
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Patent number: 10718248Abstract: An exhaust gas purification system, which includes an engine and an exhaust pipe that is connected to an exhaust manifold of the engine, includes: a catalyst converter disposed at a rear side the engine on the exhaust pipe; a selective catalytic reduction on diesel particulate filter (SDPF) disposed at a rear side of the catalyst converter on the exhaust pipe; a reducing agent injector disposed between the catalyst converter and the SDPF on the exhaust pipe and injecting a reducing agent; and a controller controlling an amount of the reducing agent injected from the reducing agent injector.Type: GrantFiled: November 29, 2018Date of Patent: July 21, 2020Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION, FEV EUROPE GMBHInventors: Myung Jong Lee, Jin Woo Park, Ki Hyung Joo, Waldemar Josef Kansy, Arun Palaniappan Muthukaruppan
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Patent number: 10598067Abstract: Provided is an exhaust purification system that may include: a first catalyst installed on a rear exhaust pipe of an engine; a selective catalytic reduction (SCR) catalyst installed on the rear exhaust pipe of the first catalyst; a reducing agent injector which is installed on an exhaust pipe between the first catalyst and the SCR catalyst and configured to inject a reducing agent; and a controller configured to control an amount of reducing agent injected from the reducing agent injector. /The controller may calculate a total amount of ammonia adsorbed in the SCR catalyst, a required amount of reducing agent based on a total amount of ammonia adsorbed in the SCR catalyst, and the amount of nitrogen oxide introduced into the SCR catalyst, and then control a reducing agent injector to inject the required amount of reducing agent.Type: GrantFiled: November 29, 2017Date of Patent: March 24, 2020Assignees: Hyundai Motor Company, Kia Motors Corporation, FEV Europe GmbHInventors: Jin Woo Park, Ki Hyung Joo, Myung Jong Lee, Arun Palaniappan Muthukaruppan, Waldemar Josef Kansy, John Henry Kwee
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Publication number: 20190360377Abstract: A correction method of NOx purifying efficiency of SDPF includes: measuring a temperature change per unit time inside the SDPF, determining whether the temperature change per unit time inside the SDPF is below a first predetermined value, determining whether a difference between a maximum value and a minimum value of temperature of respective parts inside the SDPF is below a second predetermined value if the temperature change per unit time inside the SDPF is below the first predetermined value, determining whether a temperature inside the SDPF is in a low temperature region if the difference between the maximum value and the minimum value of temperature of the respective parts inside the SDPF is below the second predetermined value, and performing a low temperature region correction if the temperature inside the SDPF is in the low temperature region.Type: ApplicationFiled: October 24, 2018Publication date: November 28, 2019Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION, FEV Europe GmbHInventors: Ki Hyung JOO, Myung Jong LEE, Jin Woo PARK, Arun Palaniappan Muthukaruppan, Waldemar Josef Kansy
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Publication number: 20190360378Abstract: An exhaust gas purification system, which includes an engine and an exhaust pipe that is connected to an exhaust manifold of the engine, includes: a catalyst converter disposed at a rear side the engine on the exhaust pipe; a selective catalytic reduction on diesel particulate filter (SDPF) disposed at a rear side of the catalyst converter on the exhaust pipe; a reducing agent injector disposed between the catalyst converter and the SDPF on the exhaust pipe and injecting a reducing agent; and a controller controlling an amount of the reducing agent injected from the reducing agent injector.Type: ApplicationFiled: November 29, 2018Publication date: November 28, 2019Inventors: Myung Jong LEE, Jin Woo PARK, Ki Hyung JOO, Waldemar Josef KANSY, Arun Palaniappan MUTHUKARUPPAN
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Patent number: 10287944Abstract: A method of desulfurizing a lean NOx trap (LNT) of an exhaust purification system provided with the LNT and a selective catalytic reduction (SCR) catalyst includes determining whether a desulfurization feasibility condition of the LNT is satisfied, determining whether a desulfurization demand condition of the LNT is satisfied, and performing desulfurization of the LNT if both of the desulfurization feasibility condition of the LNT and the desulfurization demand condition of the LNT are satisfied, wherein the desulfurization of the LNT is performed by repeating a desulfurization lean mode and a desulfurization rich mode according to whether a mode switching condition due to a desulfurization temperature is satisfied and whether a mode switching condition due to generation of H2S is satisfied.Type: GrantFiled: December 1, 2015Date of Patent: May 14, 2019Assignees: HYUNDAI MOTOR COMPANY, FEV GMBHInventors: Jin Ha Lee, Won Soon Park, Jin Woo Park, Ki Hyung Joo, Sera Lim, Thomas Wittka, Alexander Vovk, Joschka Schaub
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Publication number: 20190112953Abstract: Provided is an exhaust purification system that may include : a first catalyst installed on a rear exhaust pipe of an engine; a selective catalytic reduction (SCR) catalyst installed on the rear exhaust pipe of the first catalyst; a reducing agent injector which is installed on an exhaust pipe between the first catalyst and the SCR catalyst and configured to inject a reducing agent; and a controller configured to control an amount of reducing agent injected from the reducing agent injector. / The controller may calculate a total amount of ammonia adsorbed in the SCR catalyst, a required amount of reducing agent based on a total amount of ammonia adsorbed in the SCR catalyst, and the amount of nitrogen oxide introduced into the SCR catalyst, and then control a reducing agent injector to inject the required amount of reducing agent.Type: ApplicationFiled: November 29, 2017Publication date: April 18, 2019Inventors: Jin Woo Park, Ki Hyung Joo, Myung Jong Lee, Arun Palaniappan Muthukaruppan, Waldemar Josef Kansy, John Henry Kwee
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Publication number: 20190024567Abstract: A method of expecting N2O generation according to oxidation of NH3 in an SDPF according to an exemplary embodiment of the present invention may include measuring an initial NH3 absorption amount in the SDPF, determining a first middle NH=3 absorption amount by subtracting an NH3 slip amount in the SDPF from the initial NH3 absorption amount in the SDPF, determining a second middle NH3 absorption amount by subtracting an NH3 amount oxidizing to NOx and N2 from the first middle NH3 absorption amount, determining N2O generation amount in the SDPF, and determining a final NH3 absorption amount in the SDPF by subtracting the N2O generation amount from the second middle NH3 absorption amount.Type: ApplicationFiled: December 11, 2017Publication date: January 24, 2019Applicants: Hyundai Motor Company, Kia Motors CorporationInventor: Ki Hyung JOO
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Patent number: 9869221Abstract: A catalytic converter for a vehicle includes an LNT converter into one side of which exhaust gas discharged from an engine flows and from the opposite side of which the exhaust gas. The LNT converter traps nitrogen oxide contained in the exhaust gas under a lean environment, desorbs the trapped nitrogen oxide under a rich environment, and reduces the nitrogen oxide contained in the exhaust gas or the desorbed nitrogen oxide. A connecting housing changes a direction of a path of the exhaust gas to a vertical direction, and allows a reducing agent to be injected to the exhaust gas. An SDPF converter changes a direction of a path of the exhaust gas to a direction opposite to a direction, captures particulate matters contained in the exhaust gas, and reduces nitrogen oxide contained in the exhaust gas using the injected reducing agent.Type: GrantFiled: November 13, 2015Date of Patent: January 16, 2018Assignee: HYUNDAI MOTOR COMPANYInventors: Jin Ha Lee, Ki Hyung Joo, Won Soon Park, Young Su Kim, Jin Woo Park
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Publication number: 20170081999Abstract: A catalytic converter for a vehicle includes an LNT converter into one side of which exhaust gas discharged from an engine flows and from the opposite side of which the exhaust gas. The LNT converter traps nitrogen oxide contained in the exhaust gas under a lean environment, desorbs the trapped nitrogen oxide under a rich environment, and reduces the nitrogen oxide contained in the exhaust gas or the desorbed nitrogen oxide. A connecting housing changes a direction of a path of the exhaust gas to a vertical direction, and allows a reducing agent to be injected to the exhaust gas. An SDPF converter changes a direction of a path of the exhaust gas to a direction opposite to a direction, captures particulate matters contained in the exhaust gas, and reduces nitrogen oxide contained in the exhaust gas using the injected reducing agent.Type: ApplicationFiled: November 13, 2015Publication date: March 23, 2017Inventors: Jin Ha LEE, Ki Hyung JOO, Won Soon PARK, Young Su KIM, Jin Woo PARK
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Publication number: 20170058743Abstract: A method of desulfurizing a lean NOx trap (LNT) of an exhaust purification system provided with the LNT and a selective catalytic reduction (SCR) catalyst includes determining whether a desulfurization feasibility condition of the LNT is satisfied, determining whether a desulfurization demand condition of the LNT is satisfied, and performing desulfurization of the LNT if both of the desulfurization feasibility condition of the LNT and the desulfurization demand condition of the LNT are satisfied, wherein the desulfurization of the LNT is performed by repeating a desulfurization lean mode and a desulfurization rich mode according to whether a mode switching condition due to a desulfurization temperature is satisfied and whether a mode switching condition due to generation of H2S is satisfied.Type: ApplicationFiled: December 1, 2015Publication date: March 2, 2017Inventors: Jin Ha LEE, Won Soon PARK, Jin Woo PARK, Ki Hyung JOO, Sera LIM, Thomas WITTKA, Alexander VOVK, Joschka SCHAUB
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Patent number: 8402754Abstract: An apparatus for purifying exhaust gas may include a CPF device primarily oxidizing hydrocarbon and carbon monoxide in the exhaust gas by using a first DOC, and trapping and regenerating particulate material (PM), a DOC device mounted downstream of the CPF device, secondarily oxidizing the HC and the CO in the primarily oxidized exhaust gas by using a second DOC, and oxidizing nitrogen monoxide into nitrogen dioxide by using the second DOC, a nozzle mounted downstream of the DOC device, and dosing a reducing agent to the exhaust gas secondarily oxidized by the DOC device, and a selective catalytic reduction device mounted downstream of the nozzle, and reducing nitrogen oxide in the exhaust gas into nitrogen gas) by using the NO2 generated in the DOC device and the reducing agent.Type: GrantFiled: November 21, 2008Date of Patent: March 26, 2013Assignee: Hyundai Motor CompanyInventors: Chang Dae Kim, Jim Ha Lee, Ji Ho Cho, Ki Hyung Joo, Jin Woo Choung
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Publication number: 20090241521Abstract: An apparatus for purifying exhaust gas may include a CPF device primarily oxidizing hydrocarbon and carbon monoxide in the exhaust gas by using a first DOC, and trapping and regenerating particulate material (PM), a DOC device mounted downstream of the CPF device, secondarily oxidizing the HC and the CO in the primarily oxidized exhaust gas by using a second DOC, and oxidizing nitrogen monoxide into nitrogen dioxide by using the second DOC, a nozzle mounted downstream of the DOC device, and dosing a reducing agent to the exhaust gas secondarily oxidized by the DOC device, and a selective catalytic reduction device mounted downstream of the nozzle, and reducing nitrogen oxide in the exhaust gas into nitrogen gas) by using the NO2 generated in the DOC device and the reducing agent.Type: ApplicationFiled: November 21, 2008Publication date: October 1, 2009Applicant: HYUNDAI MOTOR COMPANYInventors: CHANG DAE KIM, Jin Ha Lee, Ji Ho Cho, Ki Hyung Joo, Jin Woo Choung