Patents by Inventor Hyoung-Hyoun Kim
Hyoung-Hyoun Kim 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: 10006322Abstract: A variable valve lift apparatus includes an outer body for selectively performing a first lever motion depending on a rotation of a high cam, the outer body further forming an inside space, an inner body disposed in the inside space of the outer body so as to selectively perform a second lever motion depending on a rotation of the high cam by being selectively locked to the outer body, the selective performing of the second lever motion depending on a rotation of a low cam being released from the outer body, and the inner body being configured so that a valve is connected with one end of the inner body, a connecting shaft rotatably connecting the outer body with the inner body, and a lost motion spring wound around the connecting shaft so as to return the outer body after being relatively rotated with respect to the inner body when the outer body is released from the inner body, wherein a roller rolling-contacting with the low cam is disposed at the inner body, and the connecting shaft is disposed between a pType: GrantFiled: September 7, 2016Date of Patent: June 26, 2018Assignee: HYUNDAI MOTOR COMPANYInventors: Jaehun Jeong, Hyoung Hyoun Kim
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Publication number: 20170306812Abstract: A variable valve lift apparatus includes an outer body for selectively performing a first lever motion depending on a rotation of a high cam, the outer body further forming an inside space, an inner body disposed in the inside space of the outer body so as to selectively perform a second lever motion depending on a rotation of the high cam by being selectively locked to the outer body, the selective performing of the second lever motion depending on a rotation of a low cam being released from the outer body, and the inner body being configured so that a valve is connected with one end of the inner body, a connecting shaft rotatably connecting the outer body with the inner body, and a lost motion spring wound around the connecting shaft so as to return the outer body after being relatively rotated with respect to the inner body when the outer body is released from the inner body, wherein a roller rolling-contacting with the low cam is disposed at the inner body, and the connecting shaft is disposed between a pType: ApplicationFiled: September 7, 2016Publication date: October 26, 2017Inventors: Jaehun JEONG, Hyoung Hyoun KIM
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Patent number: 9790819Abstract: A variable valve lift system may include a roller finger follower having an end connected with a valve and a roller mounted thereto. A hydraulic lash adjuster supports another end of the roller finger follower and has operating modes which are changed to a high lift mode or a low lift mode according to supplied hydraulic pressure to change a height of the hydraulic lash adjuster. A hydraulic pressure supplying portion supplies the hydraulic pressure to the hydraulic lash adjuster. A cam is mounted to a camshaft and contacts the roller of the roller finger follower. The cam has a first ramp and a second ramp formed thereon.Type: GrantFiled: September 24, 2015Date of Patent: October 17, 2017Assignee: HYUNDAI MOTOR COMPANYInventors: JangSu Lee, Hyo Sang Cho, Hyoung Hyoun Kim
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Patent number: 9784220Abstract: An intake air control apparatus of an engine includes a housing having an intake air inflow passage for receiving external air, an exhaust gas inflow passage for receiving recirculated exhaust gas, and an intake air supply passage for supplying the external air from the intake air inflow passage or the exhaust gas from the exhaust gas inflow passage to the engine. A motor gear rotates together with an output shaft of the motor. A connection gear is engaged and rotates together with the motor gear. A recirculation gear is engaged and rotates together with the connection gear. A recirculation valve opens and closes the exhaust gas inflow passage since the recirculation valve rotates together with the recirculation gear. An intake air gear is engaged and rotates together with the connection gear. An intake air throttle valve opens and closes the intake air inflow passage.Type: GrantFiled: May 4, 2015Date of Patent: October 10, 2017Assignee: HYUNDAI MOTOR COMPANYInventors: JongMan Jun, Hyoung Hyoun Kim
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Patent number: 9784225Abstract: An intake air control apparatus of an engine includes an Intake manifold configured to guide intake air into a plurality of engine cylinders. A plurality of first intake air passages communicate with the cylinders. A plurality of second intake air passages are disposed in parallel with the first intake air passages and communicate with the cylinders. An Intake throttle shaft passes through the first intake air passages. An intake air throttle valve is disposed inside the first intake air passages, rotates with the Intake throttle shaft, and opens/closes the first intake air passage. A swirl throttle shaft passes though the second intake air passages. A swirl throttle valve is disposed inside the second intake air passages, rotates together with the swirl throttle shaft, and opens/closes the second intake air passages. An actuator rotates selectively the Intake throttle shaft and the swirl throttle shaft. A controller controls the actuator.Type: GrantFiled: July 31, 2015Date of Patent: October 10, 2017Assignee: Hyundai Motor CompanyInventors: Hyoung Hyoun Kim, JongMan Jun
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Patent number: 9624854Abstract: A method for fuel injection of an engine system may include detecting driving information, including a combustion pressure in a combustion chamber, a heat generation amount in the combustion chamber, a crank angle, and a pressure/temperature/air amount of an intake manifold and an exhaust manifold, setting a fuel amount and injection timing with respect to a pilot injection as map data from an internal temperature, determining whether a maximum combustion pressure change rate is greater than a predetermined pressure change rate, determining generation timing of the maximum combustion pressure change rate, when the maximum combustion pressure change rate is greater than the predetermined pressure change rate, and decreasing a fuel amount of the pilot injection when the maximum combustion pressure change rate is generated during the pilot injection.Type: GrantFiled: July 13, 2015Date of Patent: April 18, 2017Assignee: Hyundai Motor CompanyInventors: JangSu Lee, Hyo Sang Cho, Hyoung Hyoun Kim
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Patent number: 9610662Abstract: An apparatus for assembling an overhead camshaft that comprises a hollow outer shaft having at least one slot formed, an inner shaft having at least one pin hole formed, at least one first cam lobe, and at least one second cam lobe. The apparatus comprises a first fixture having two journals, on which the outer shaft is disposed, formed at opposite ends thereof. A second fixture has a plurality of journals on which at least two of the at least one first cam lobe and the at least one second cam lobe are disposed. A third fixture restricts upward and downward and rotational movements of at least one of the outer shaft, the at least one first cam lobe, and the at least one second cam lobe.Type: GrantFiled: December 1, 2014Date of Patent: April 4, 2017Assignee: HYUNDAI MOTOR COMPANYInventor: Hyoung Hyoun Kim
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Publication number: 20170022915Abstract: A cylinder deactivation apparatus of an engine selectively deactivates at least one of a plurality of cylinders. The cylinder deactivation apparatus may include a deactivation intake port disposed to supply intake air to a cylinder which is selectively deactivated. A deactivation intake valve is disposed at the deactivation intake port so as to selectively open/close the deactivation intake port. A deactivation exhaust port is disposed to exhaust exhaust gas from the cylinder which is selectively deactivated. A deactivation intake valve is disposed at the deactivation exhaust port so as to selectively open/close the deactivation exhaust port, and a controller controls operation of the deactivation intake valve and the deactivation intake valve.Type: ApplicationFiled: December 1, 2015Publication date: January 26, 2017Applicant: HYUNDAI MOTOR COMPANYInventor: Hyoung Hyoun KIM
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Patent number: 9512747Abstract: A valve train layout structure may comprise a non-control camshaft connected to a chain sprocket rotating in line with engine timing and adapted not to vary opening/closing timing of a valve, a control camshaft including an outer shaft, a first cam fixed to an outer shaft, an inner shaft rotatably inserted in an outer shaft, and a second cam fixed to an inner shaft and adapted to vary opening/closing timing of at least one of a valve activated by a first cam and a valve activated by a second cam by varying a phase between a first cam and a second cam, and a cam phaser including a rotor and a stator rotatable relatively to each other. One of a rotor and a stator may be operatively connected to the outer shaft and the other of a rotor and a stator is operatively connected to the inner shaft such that the cam phaser can vary the phase between the first cam and the second cam.Type: GrantFiled: July 31, 2014Date of Patent: December 6, 2016Assignee: Hyundai Motor CompanyInventor: Hyoung Hyoun Kim
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Patent number: 9488134Abstract: An engine system having a turbocharger, in which an intake manifold is integrally formed, may include an intercooler that cools intake air supplied from the turbocharger, an EGR cooler that cools EGR gas supplied from an exhaust manifold, the intake manifold in which the intake air and the EGR gas supplied from the intercooler and the EGR cooler are mixed and that supplies a combustion chamber with the mixed gas, and a distribution unit that is mounted in the intake manifold and includes distribution pipes. One or each of the distribution pipes may receive the EGR gas from a connection hole through which the EGR gas is supplied and exhaust the EGR gas through an outlet towards an intake port.Type: GrantFiled: June 4, 2014Date of Patent: November 8, 2016Assignee: Hyundai Motor CompanyInventors: Jong Man Jun, Hyoung Hyoun Kim
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Publication number: 20160160736Abstract: A water-cooling intercooler apparatus, may include a low-temperature radiator in which coolant flows to cool supercharged air supplied to an engine, wherein the low-temperature radiator is provided with an inlet into which the coolant flows, an outlet from which the coolant discharges, a body portion which is made of a plurality of connecting pipes for the coolant to flow therein, a first coolant tank configured to distribute the coolant to the plurality of connecting pipes, and a second coolant tank configured to collect the coolant; and at least one actuated-valves provided at the first or second coolant tank to open or close an inside of the first or second coolant tank for the coolant to flow in a portion of the plurality of connecting pipes.Type: ApplicationFiled: April 30, 2015Publication date: June 9, 2016Applicant: Hyundai Motor CompanyInventors: JongMan JUN, Hyoung Hyoun KIM
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Publication number: 20160138486Abstract: A method for fuel injection of an engine system may include detecting driving information, including a combustion pressure in a combustion chamber, a heat generation amount in the combustion chamber, a crank angle, and a pressure/temperature/air amount of an intake manifold and an exhaust manifold, setting a fuel amount and injection timing with respect to a pilot injection as map data from an internal temperature, determining whether a maximum combustion pressure change rate is greater than a predetermined pressure change rate, determining generation timing of the maximum combustion pressure change rate, when the maximum combustion pressure change rate is greater than the predetermined pressure change rate, and decreasing a fuel amount of the pilot injection when the maximum combustion pressure change rate is generated during the pilot injection.Type: ApplicationFiled: July 13, 2015Publication date: May 19, 2016Applicant: Hyundai Motor CompanyInventors: JangSu LEE, Hyo Sang CHO, Hyoung Hyoun KIM
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Publication number: 20160138437Abstract: A variable valve lift system may include a roller finger follower having an end connected with a valve and a roller mounted thereto. A hydraulic lash adjuster supports another end of the roller finger follower and has operating modes which are changed to a high lift mode or a low lift mode according to supplied hydraulic pressure to change a height of the hydraulic lash adjuster. A hydraulic pressure supplying portion supplies the hydraulic pressure to the hydraulic lash adjuster. A cam is mounted to a camshaft and contacts the roller of the roller finger follower. The cam has a first ramp and a second ramp formed thereon.Type: ApplicationFiled: September 24, 2015Publication date: May 19, 2016Inventors: JangSu LEE, Hyo Sang CHO, Hyoung Hyoun KIM
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Publication number: 20160108822Abstract: A cylinder deactivation apparatus of an engine is configured to selectively deactivate at least one of a plurality of cylinders in accordance with operation states of an engine. The cylinders are configured to receive intake air from an intake manifold. The apparatus includes: at least one deactivation intake port having first and second ends. The first end communicates with the intake manifold. An intake channel connects the second end of the deactivation intake port to the at least one of the cylinders that is selectively deactivated. A deactivation throttle valve is disposed in the deactivation intake port and configured to selectively open or close the deactivation intake port. A controller is configured to control an operation of the deactivation throttle valve such that intake air is selectively supplied to the at least one of the cylinders.Type: ApplicationFiled: October 16, 2015Publication date: April 21, 2016Inventors: Hyoung Hyoun KIM, Jang Su LEE, Youngho KIM, Jong Man JUN
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Publication number: 20160090951Abstract: An intake air control apparatus of an engine includes an Intake manifold configured to guide intake air into a plurality of engine cylinders. A plurality of first intake air passages communicate with the cylinders. A plurality of second intake air passages are disposed in parallel with the first intake air passages and communicate with the cylinders. An Intake throttle shaft passes through the first intake air passages. An intake air throttle valve is disposed inside the first intake air passages, rotates with the Intake throttle shaft, and opens/closes the first intake air passage. A swirl throttle shaft passes though the second intake air passages. A swirl throttle valve is disposed inside the second intake air passages, rotates together with the swirl throttle shaft, and opens/closes the second intake air passages. An actuator rotates selectively the Intake throttle shaft and the swirl throttle shaft. A controller controls the actuator.Type: ApplicationFiled: July 31, 2015Publication date: March 31, 2016Inventors: Hyoung Hyoun KIM, JongMan JUN
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Publication number: 20160090950Abstract: An intake air control apparatus of an engine includes a housing having an intake air inflow passage for receiving external air, an exhaust gas inflow passage for receiving recirculated exhaust gas, and an intake air supply passage for supplying the external air from the intake air inflow passage or the exhaust gas from the exhaust gas inflow passage to the engine. A motor gear rotates together with an output shaft of the motor. A connection gear is engaged and rotates together with the motor gear. A recirculation gear is engaged and rotates together with the connection gear. A recirculation valve opens and closes the exhaust gas inflow passage since the recirculation valve rotates together with the recirculation gear. An intake air gear is engaged and rotates together with the connection gear. An intake air throttle valve opens and closes the intake air inflow passage.Type: ApplicationFiled: May 4, 2015Publication date: March 31, 2016Inventors: JongMan JUN, Hyoung Hyoun KIM
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Patent number: 9260987Abstract: A variable valve lift (VVL) system in an engine includes an oil control valve and a lock pin configured to be hydraulically actuated against an elastic force of a return spring under a control of the OCV. An orifice through which oil passes is formed to supply hydraulic pressure to the OCV and the lock pin. An oil pressure sensor measures the hydraulic pressure to be supplied to the OCV and the lock pin. A controller is configured to receive a signal from the oil pressure sensor and to control the OCV according to the received signal.Type: GrantFiled: June 18, 2014Date of Patent: February 16, 2016Assignee: HYUNDAI MOTOR COMPANYInventors: Hyoung Hyoun Kim, Jong Man Jun, Jong In Kang, Seung Il Park
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Publication number: 20150369096Abstract: A variable valve lift (VVL) system in an engine includes an oil control valve and a lock pin configured to be hydraulically actuated against an elastic force of a return spring under a control of the OCV. An orifice through which oil passes is formed to supply hydraulic pressure to the OCV and the lock pin. An oil pressure sensor measures the hydraulic pressure to be supplied to the OCV and the lock pin. A controller is configured to receive a signal from the oil pressure sensor and to control the OCV according to the received signal.Type: ApplicationFiled: June 18, 2014Publication date: December 24, 2015Inventors: Hyoung Hyoun KIM, Jong Man JUN, Jong In KANG, Seung Il PARK
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Publication number: 20150176440Abstract: A valve train layout structure may comprise a non-control camshaft connected to a chain sprocket rotating in line with engine timing and adapted not to vary opening/closing timing of a valve, a control camshaft including an outer shaft, a first cam fixed to an outer shaft, an inner shaft rotatably inserted in an outer shaft, and a second cam fixed to an inner shaft and adapted to vary opening/closing timing of at least one of a valve activated by a first cam and a valve activated by a second cam by varying a phase between a first cam and a second cam, and a cam phaser including a rotor and a stator rotatable relatively to each other. One of a rotor and a stator may be operatively connected to the outer shaft and the other of a rotor and a stator is operatively connected to the inner shaft such that the cam phaser can vary the phase between the first cam and the second cam.Type: ApplicationFiled: July 31, 2014Publication date: June 25, 2015Applicant: Hyundai Motor CompanyInventor: Hyoung Hyoun KIM
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Publication number: 20150174713Abstract: An apparatus for assembling an overhead camshaft that comprises a hollow outer shaft having at least one slot formed, an inner shaft having at least one pin hole formed, at least one first cam lobe, and at least one second cam lobe. The apparatus comprises a first fixture having two journals, on which the outer shaft is disposed, formed at opposite ends thereof. A second fixture has a plurality of journals on which at least two of the at least one first cam lobe and the at least one second cam lobe are disposed. A third fixture restricts upward and downward and rotational movements of at least one of the outer shaft, the at least one first cam lobe, and the at least one second cam lobe.Type: ApplicationFiled: December 1, 2014Publication date: June 25, 2015Inventor: Hyoung Hyoun KIM