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公开(公告)号：US10393037B2
公开(公告)日：2019-08-27
申请号：US15839596
申请日：2017-12-12
发明人： In Sang Ryu , Kyoung Pyo Ha , You Sang Son , Kiyoung Kwon
IPC分类号： F02D41/00 , F02D13/02 , F01L13/00 , F01L1/047 , F01L1/344 , F01L1/34 , F01L1/356 , F01L1/053 , F01L1/26
摘要： A method for controlling intake and exhaust valves of an engine includes: Controlling opening and closing timings of the intake and exhaust valves by an intake continuous variable valve timing (CVVT) device and an exhaust CVVT devices; determining, by a controller, target intake and exhaust opening durations of the intake and exhaust valves, and target opening and closing timings of the valves based on an engine load and an engine speed; modifying current intake and exhaust opening durations based on the target opening durations via an intake continuous variable valve duration (CVVD) device and an exhaust CVVD device; adjusting opening or closing timings of the valves to the target opening or closing timings of the valves while maintaining the modified opening durations of the valves.
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公开(公告)号：US20180100452A1
公开(公告)日：2018-04-12
申请号：US15839581
申请日：2017-12-12
发明人： In Sang RYU , Kyoung Pyo Ha , You Sang Son , Kiyoung Kwon
CPC分类号： F02D41/0002 , F01L1/047 , F01L1/34 , F01L1/344 , F01L13/0015 , F01L2001/0471 , F01L2001/0537 , F01L2800/00 , F02D13/0211 , F02D13/0219 , F02D13/0261 , F02D41/0007 , F02D41/1406 , F02D2041/001 , F02D2041/002 , F02D2200/023 , F02D2200/101 , Y02T10/144 , Y02T10/18 , Y02T10/42 , Y10S903/905
摘要： A method for controlling valve timing for an engine includes: classifying a plurality of control regions depending on an engine speed and an engine load; applying a maximum duration to an intake valve and controlling an exhaust valve to limit a valve overlap in a first region; controlling the intake valve and the exhaust valve to maintain the maximum duration in a second region; advancing an intake valve closing (IVC) timing and an exhaust valve closing (EVC) timing in a third region; approaching the IVC timing to a bottom dead center (BDC) in a fourth region; controlling a throttle valve to be fully opened, advancing an intake valve opening (IVO) timing before a top dead center (TDC), and controlling the IVC timing to be a predetermined value after the BDC in a fifth region; and controlling the throttle valve to be fully opened and advancing the IVC timing in a sixth region.
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公开(公告)号：US10920679B2
公开(公告)日：2021-02-16
申请号：US15839566
申请日：2017-12-12
发明人： In Sang Ryu , Kyoung Pyo Ha , You Sang Son , Kiyoung Kwon
IPC分类号： F02D13/02 , F01L1/34 , F02D41/14 , F02D41/02 , F01L1/053 , F02D41/00 , F01L1/344 , F02D9/02 , F01L13/00
摘要： A method for controlling intake and exhaust valves of an engine includes: controlling, by an intake continuous variable valve timing (CVVT) device and an exhaust CVVT device, opening and closing timings of the intake valve and exhaust valves; determining, by a controller, a target opening duration of the intake and exhaust valves based on an engine load and an engine speed; modifying, by an intake continuous variable valve duration (CVVD) device and by an exhaust two-stage variable valve duration device, current opening and closing timings of the intake valve and exhaust valve based on the target opening durations. In particular, the exhaust two-stage VVD device switches a current opening duration of the exhaust valve to a first exhaust opening duration or a second exhaust opening duration which is shorter than the first opening duration based on the target opening duration of the exhaust valve.
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公开(公告)号：US20200173385A1
公开(公告)日：2020-06-04
申请号：US16380428
申请日：2019-04-10
发明人： Jin Woo Choung , Kiyoung Kwon
IPC分类号： F02D41/02 , F01N3/10 , F01N3/20 , F02D41/04 , F02D43/04 , F02D13/02 , F02D17/02 , F02P5/04 , F02P5/15
摘要： A method of controlling oxygen purge of a three-way catalyst may include: performing a fuel cut-off; determining whether a fuel cut-in condition is satisfied after the fuel cut-off; calculating an optimum valve overlap according to an intake amount, an engine rotation speed, and an ignition timing if the fuel cut-in condition is satisfied after the fuel cut-off; controlling a CVVD apparatus to be at the optimum valve overlap; and performing the oxygen purge at the optimum valve overlap.
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公开(公告)号：US10563551B2
公开(公告)日：2020-02-18
申请号：US15806534
申请日：2017-11-08
发明人： You Sang Son , Ingee Suh , Kiyoung Kwon , In Sang Ryu , Kyoung Pyo Ha , Dongheon Park , Wootae Kim , Back Sik Kim , Seung Jae Lee
摘要： A continuous variable valve duration apparatus may include a camshaft, a cam unit on which a cam is formed, of which the camshaft is inserted thereto and of which a relative phase angle with respect to the camshaft is variable, an inner bracket transmitting rotation of the camshaft to the cam unit, a wheel housing in which the inner bracket is rotatably inserted, on which a guide groove parallel to the camshaft is formed, and on which a guide hole vertical to the camshaft is formed, a guide portion including a guide shaft inserted into the guide hole for guiding movement of the wheel housing and a control portion including a control shaft disposed parallel to the camshaft and inserted into the guide groove, and the control portion selectively rotating the control shaft for the relative position of the wheel housing with respect to the camshaft to be changed.
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公开(公告)号：US10550738B2
公开(公告)日：2020-02-04
申请号：US16169578
申请日：2018-10-24
发明人： You Sang Son , Ingee Suh , Kiyoung Kwon , In Sang Ryu , Kyoung Pyo Ha , Dongheon Park , Wootae Kim , Back Sik Kim , Seung Jae Lee
摘要： A continuously variable valve duration apparatus may include: a camshaft; a cam unit on which a cam is formed, and the camshaft inserted to the cam; an inner wheel for transmitting rotation of the camshaft to the cam unit; a wheel housing into which the inner wheel is rotatably inserted and movable perpendicular to the camshaft; a guide shaft on which a guide screw thread is formed and disposed perpendicular to the camshaft; a worm wheel formed with an inner screw thread for engaging with the guide screw thread, and the worm wheel disposed within the wheel housing; and a control shaft on which a control worm for engaging with the worm wheel is formed.
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7.发明申请公开(公告)号：US20180100446A1
公开(公告)日：2018-04-12
申请号：US15839606
申请日：2017-12-12
发明人： In Sang Ryu , Kyoung Pyo Ha , You Sang Son , Kiyoung Kwon
IPC分类号： F02D13/02
CPC分类号： F02D13/0207 , F02B25/145 , F02D13/0215 , F02D13/0219 , F02D13/0261 , F02D41/0007 , F02D41/009 , F02D2009/0235 , F02D2041/001 , F02D2041/002 , F02D2200/023 , F02D2200/04 , F02D2200/0404 , F02D2200/1002 , F02D2200/101 , F02D2200/501 , F02D2200/602 , Y02T10/144 , Y02T10/18
摘要： A method for controlling intake and exhaust valves of an engine includes: controlling, by an intake continuous variable valve timing (CVVT) device and an exhaust CVVT device, opening and closing timings of the intake valve and exhaust valves; determining, by a controller, a target opening duration of the intake and exhaust valves based on an engine load and an engine speed; modifying, by an intake continuous variable valve duration (CVVD) device and by an exhaust CVVD device, current opening and closing timings of the intake valve and/or exhaust valve based on the target opening duration; and advancing or retarding, by the intake and/or exhaust CVVD devices, the current opening timing of the intake and exhaust valves while simultaneously retarding or advancing the current closing timing of the intake and exhaust valve by a predetermined value based on the target opening duration.
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公开(公告)号：US10823090B2
公开(公告)日：2020-11-03
申请号：US16511900
申请日：2019-07-15
发明人： Jin Woo Choung , Kiyoung Kwon
摘要： A system of controlling an engine includes: an engine including a combustion chamber, an intake valve, an ignition switch, and an exhaust valve; a dual continuously variable valve duration device to adjust an intake duration of the intake valve and an exhaust duration of the exhaust valve; and a controller for adjusting an ignition timing of the ignition switch, the intake duration, and the exhaust duration based on a driving condition of the vehicle. In particular, until the temperature of the exhaust gas reaches a predetermined temperature after the engine starts, the controller sets the ignition timing to an ignition timing within a predetermined ignition timing range, sets the intake duration of the intake valve to an intake duration within a predetermined intake duration range, and increases the exhaust duration of the exhaust valve to a limit exhaust duration according to the set intake duration.
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公开(公告)号：US10174643B2
公开(公告)日：2019-01-08
申请号：US15806153
申请日：2017-11-07
发明人： You Sang Son , Ingee Suh , Kiyoung Kwon , In Sang Ryu , Kyoung Pyo Ha , Dongheon Park , Wootae Kim , Back Sik Kim , Seung Jae Lee
摘要： A continuous variable valve duration apparatus may include a camshaft, a cam device on which a cam is formed, of which the camshaft is inserted thereto and of which a relative phase angle with respect to the camshaft is variable, an internal bracket transmitting rotation of the camshaft to the cam device, a wheel housing in which the internal bracket is rotatably inserted and on which a guide groove parallel to the camshaft is formed, a control portion including a control shaft disposed parallel to the camshaft and inserted into the guide groove, and the control portion selectively rotating the control shaft for the relative position of the wheel housing with respect to the camshaft to be changed and a slider housing interposed between the control shaft and the guide groove.
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10.发明授权公开(公告)号：US10753291B1
公开(公告)日：2020-08-25
申请号：US16539400
申请日：2019-08-13
发明人： Jin Woo Choung , Kiyoung Kwon
摘要： A system of controlling an engine provided with a dual continuously variable valve duration device may include the engine including a combustion chamber, an intake valve, an ignition switch provided in the combustion chamber, and an exhaust valve, the CVVD provided to adjust an intake duration of the intake valve and an exhaust duration of the exhaust valve, a warm-up catalytic converter (WCC) including a three-way catalyst (TWC) for purifying hydrocarbons, carbon monoxide, nitrogen oxides contained in the exhaust gas downstream of the engine, a Hydrocarbon (HC) trap disposed downstream of the warm-up catalytic converter for adsorbing and removing the hydrocarbons contained in the exhaust gas, an electrically heated catalyst disposed downstream of the HC trap and provided with a heating device, a three-way catalyst (TWC) disposed downstream of the electrically heated catalyst for purifying hydrocarbons, carbon monoxide, and nitrogen oxides contained in the exhaust gas, and a controller for adjusting an ignition timing of the ignition switch, the intake duration and the exhaust duration based on a driving condition of the vehicle.
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