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公开(公告)号：US20230250767A1
公开(公告)日：2023-08-10
申请号：US18011977
申请日：2021-06-23
Applicant: Hitachi Astemo, Ltd.
Inventor： Yuta KOIKE , Masayuki SARUWATARI , Yuusuke KIHARA , Akihiro KOMORI
CPC classification number: F02D13/0238 , F01L1/356
Abstract: An object of the present invention is to obtain a controller device for a variable valve timing apparatus capable of controlling a phase to an arbitrary fixed valve timing from immediately before an internal combustion engine stops until after the internal combustion engine has stopped. The controller device for the variable valve timing apparatus according to the present invention performs, during engine stop processing of the internal combustion engine, normal control of changing the relative rotational phase of a camshaft to a most advanced position or a most retarded position when the rotational speed of a crankshaft is equal to or more than a first threshold, and low-speed control of fixing a current or a voltage supplied to the motor to be constant to maintain the relative rotational phase of the camshaft at the most advanced position or the most retarded position in a period from when the rotational speed of the crankshaft is lower than the first threshold until the rotational speed becomes zero.
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公开(公告)号：US20190010838A1
公开(公告)日：2019-01-10
申请号：US16069617
申请日：2017-01-27
Applicant: DENSO CORPORATION
Inventor： Koichi AOYAMA
CPC classification number: F01L1/3442 , F01L1/356 , F01L13/00 , F01L2001/34456 , F01L2001/34469 , F02D13/02 , F02D13/0219 , Y02T10/18
Abstract: In a valve timing control system, a control command unit includes: a first stage setting block and a next stage setting block. The first stage setting block sets a retard holding command value as a control command value to introduce hydraulic fluid to each retard operation chamber under a state where a rotation phase is locked, to start applying an operation pressure more than or equal to an unlock pressure to a lock component. The next stage setting block sets an advance holding command value as a control command value to introduce hydraulic fluid to each advance operation chamber, after setting the retard holding command value, to maintain the applying of the operation pressure more than or equal to the unlock pressure to the lock component.
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公开(公告)号：US10060305B2
公开(公告)日：2018-08-28
申请号：US15334583
申请日：2016-10-26
Applicant: DENSO CORPORATION , NIPPON SOKEN, INC. , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Shota Toda , Shuhei Oe , Toshiki Fujiyoshi , Haruhito Fujimura , Yu Yokoyama
CPC classification number: F01L1/3442 , F01L1/356 , F01L2001/3443 , F01L2001/34436 , F01L2001/34443 , F01L2001/34486 , F01L2201/00 , F01L2800/14 , F01L2820/041 , F02D13/0203
Abstract: A control device has two modes as control modes of an electric power supply to an electromagnetic solenoid, which are used when a first determining unit determines that a difference between a sensed value of a phase and a target value of the phase exceeds a permissible range. One of the modes is a special mode that is used when a second determining unit determines that the sensed value of the phase reaches a threshold value. Another one of the modes is a normal mode that is used when the second determining unit determines that the sensed value of the phase does not reach the threshold value. In the special mode, the control device controls supply of the electric power to the electromagnetic solenoid in such a manner that an opening degree of an advancing port is larger than the opening degree of the advancing port in the normal mode.
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公开(公告)号：US20180238244A1
公开(公告)日：2018-08-23
申请号：US15556267
申请日：2016-03-30
Applicant: AISIN SEIKI KABUSHIKI KAISHA
Inventor： Satoshi YABU , Masaaki KANEKO
CPC classification number: F02D13/0249 , F01L1/3442 , F01L1/352 , F01L1/356 , F01L2001/0537 , F01L2001/3443 , F01L2001/34483 , F01L2250/02 , F01L2800/00 , F01L2820/032 , F01L2820/041 , F01L2820/042 , F02D13/02 , F02D13/0261 , F02D2200/1002 , F02D2200/101 , Y02T10/18
Abstract: A control unit for an internal combustion engine is configured for suppressing knocking phenomenon with reduction of overlap, while maintaining an opening timing of an exhaust valve at the time of low-rotation, high-load state. A valve opening/closing timing control apparatus includes a phase adjustment mechanism configured to vary a relative rotational phase between a driving side rotary body rotatable in synchronism with a crankshaft of the internal combustion engine and a driven side rotary body rotatable together with an exhaust cam shaft. After an opening timing of the exhaust valve, an advancing operation is effected for displacing the relative rotational phase in the advancing direction relative to the opening timing.
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公开(公告)号：US20180171834A1
公开(公告)日：2018-06-21
申请号：US15806153
申请日：2017-11-07
Applicant: Hyundai Motor Company , Kia Motors Corporation
Inventor： You Sang SON , Ingee Suh , Kiyoung Kwon , In Sang Ryu , Kyoung Pyo Ha , Dongheon Park , Wootae Kim , Back Sik Kim , Seung Jae Lee
CPC classification number: F01L1/34413 , F01L1/047 , F01L1/267 , F01L1/356 , F01L2001/0473
Abstract: 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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Patent Agency Ranking
公开(公告)号：US09964007B2
公开(公告)日：2018-05-08
申请号：US15267871
申请日：2016-09-16
Applicant: Hyundai Motor Company
Inventor： Kyung Mo Kim , Seock Joong Yoon
CPC classification number: F01L13/0015 , F01L1/053 , F01L1/181 , F01L1/267 , F01L1/356 , F01L2001/0473 , F01L2001/0535 , F01L2001/467 , F01L2013/001 , F01L2013/105 , F01L2105/00
Abstract: The present disclosure provides a variable valve duration/variable valve lift system including a camshaft in a first cam with a variable relative phase angle with respect to the camshaft, an inner bracket transmitting rotation of the camshaft, a slider housing, a first rocker arm of which a first end contacts the first cam, a rocker shaft connected to the first rocker arm on which hydraulic lines are formed, solenoid valves configured to selectively supply hydraulic pressure through the hydraulic lines, a position controller configured to selectively change a position of the slider housing according to supplied hydraulic pressure from the solenoid valves, a first bridge connected to a second end of the first rocker arm and to which a first valve is connected, and a first valve lift device disposed within the first bridge for changing valve lift of the first valve according to supplied hydraulic pressure from hydraulic lines.
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公开(公告)号：US20180100453A1
公开(公告)日：2018-04-12
申请号：US15839596
申请日：2017-12-12
Applicant: HYUNDAI MOTOR COMPANY , KIA MOTORS CORPORATION
Inventor： In Sang RYU , Kyoung Pyo HA , You Sang SON , Kiyoung KWON
CPC classification number: F02D41/0002 , F01L1/047 , F01L1/267 , F01L1/34 , F01L1/344 , F01L1/356 , F01L13/0015 , F01L2001/0473 , F01L2001/0537 , F01L2001/34496 , F01L2013/103 , F01L2250/02 , F01L2800/00 , F01L2800/01 , F01L2800/04 , F01L2820/041 , F01L2820/042 , F02D13/0211 , F02D13/0215 , F02D13/0261 , F02D41/009 , F02D2041/001 , F02D2041/002 , F02D2200/0406 , F02D2200/101 , Y02T10/18 , Y02T10/42
Abstract: 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：US09915182B2
公开(公告)日：2018-03-13
申请号：US14948275
申请日：2015-11-21
Applicant: Hyundai Motor Company
Inventor： You Sang Son , Kyoung Pyo Ha , Back Sik Kim
CPC classification number: F01L13/0015 , F01L1/356 , F01L13/0026 , F01L2001/0473 , F01L2013/0084 , F01L2013/103
Abstract: A continuous variable valve duration apparatus may include a camshaft, a first cam portion and a second cam portion of which a cam is formed thereto respectively, of which the camshaft is inserted thereto, of which relative phase angles with respect to the camshaft are variable, and the first and second cam portions disposed on one cylinder and the next cylinder respectively, a first inner bracket and a second inner bracket transmitting rotation of the camshaft to the first and second cam portions respectively, a slider housing of which the first and second inner brackets are rotatably inserted thereto and of which relative position with respect to the camshaft is variable and a control portion selectively changing the relative position of the slider housing.
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公开(公告)号：US09869215B2
公开(公告)日：2018-01-16
申请号：US14948269
申请日：2015-11-21
Applicant: Hyundai Motor Company
Inventor： You Sang Son , Kyoung Pyo Ha , Back sik Kim
CPC classification number: F01L13/0015 , F01L1/053 , F01L1/08 , F01L1/356 , F01L2013/0084 , F01L2013/103
Abstract: A continuous variable valve duration apparatus may include a camshaft, first and second cam portions, of which the camshaft is inserted thereto, of which relative phase angles with respect to the camshaft are variable, a first and a second inner brackets transmitting rotation of the camshaft to the first and second cam portions respectively, a slider housing of which the first and second inner brackets are rotatably inserted thereto, of which relative position with respect to the camshaft is variable and of which a guide protruded portion is formed to an upper side thereof, cam caps of which each cam cap engaging portion is rotatably connected thereto, a connecting bracket connecting the cam caps and of which a guide slot for the guide protruded portion to be inserted thereto is formed thereto and a control portion selectively changing a position of the slider housing.
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公开(公告)号：US09856758B2
公开(公告)日：2018-01-02
申请号：US14942250
申请日：2015-11-16
Applicant: Hyundai Motor Company
Inventor： You Sang Son , Kyoung Pyo Ha , Back Sik Kim
CPC classification number: F01L1/344 , F01L1/34 , F01L1/356 , F01L13/0015 , F01L13/0036 , F01L13/0047 , F01L2001/0473 , F01L2001/0537 , F01L2013/0052 , F01L2013/103 , F01L2820/04
Abstract: A continuously variable valve timing apparatus may include a camshaft, a first and a second cam portions of which two cams are formed thereto, of which the camshaft is inserted thereinto and of which relative phase angles with respect to the camshaft are variable, a first and a second inner brackets transmitting rotation of the camshaft to the first and second cam portions respectively, a first and a second slider housings of which the first and second inner brackets are rotatably inserted thereinto respectively and of which relative positions with respect to the camshaft are variable, a control shaft connected with the slider housings and a control portion connected with the control shaft and selectively changing the positions of the inner brackets.
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