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公开(公告)号：US11852054B2
公开(公告)日：2023-12-26
申请号：US17477756
申请日：2021-09-17
Applicant: BorgWarner Inc.
Inventor： Chad M. McCloy , David C. White , Shawn Blackmur , Timothy W. Kunz , Brian T. Kenyon
CPC classification number: F01L1/356 , F01L1/047 , F01L2001/0473 , F01L2001/34483 , F01L2001/34489
Abstract: A variable camshaft timing (VCT) system includes an independent camshaft phaser, receiving input from a crankshaft of an internal combustion engine, having an output coupled to one of an inner concentric camshaft or an outer concentric camshaft; and a dependent camshaft phaser, coupled to the other of the inner concentric camshaft or the outer concentric camshaft, comprising a half-Oldham link configured to permit radial movement of the inner concentric camshaft relative to the outer concentric camshaft in one radial direction and at least one pivotable arm configured to permit radial movement of the inner concentric camshaft relative to the outer concentric camshaft in another, different radial direction.
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公开(公告)号：US11306628B2
公开(公告)日：2022-04-19
申请号：US17113012
申请日：2020-12-05
Applicant: Hyundai Motor Company , Kia Motors Corporation
Inventor： Hyeon Woo Kim , Kyoung Pyo Ha , Back Sik Kim , Jong Gu Kim
Abstract: A continuously variable valve duration apparatus includes a camshaft, a cam unit on which a cam is formed, a guide bracket including an upper guide boss, an internal wheel configured to transmit rotation of the camshaft to the cam unit, a wheel housing in which the internal wheel is rotatably inserted, wherein a guide thread is formed in a portion of the wheel housing, and of which a guide shaft is formed to be movably inserted into the upper guide boss, a worm wheel to which an internal thread engaging with the guide thread is formed in the worm wheel, and to which an external thread is formed thereon, a control shaft on which a control worm engaged with the external thread is formed, and an upper bushing mounted on a lower portion of the upper guide boss to support the guide shaft.
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公开(公告)号：US10533464B2
公开(公告)日：2020-01-14
申请号：US14942900
申请日：2015-11-16
Applicant: Hyundai Motor Company
Inventor： You Sang Son , Kyoung Pyo Ha , Back Sik Kim
IPC: F01L1/356
Abstract: A continuously variable valve duration apparatus may include a camshaft, a plurality of first cams and second cams of which a cam key is formed respectively thereto, and of which relative phase angles with respect to the camshaft are variable, a plurality of rotation rings mounted to the camshaft and of which a ring key is formed thereto respectively, a plurality of inner brackets transmitting rotation of the camshaft to the cam keys of the first cams and the seconds respectively, a plurality of slider housings of which each inner bracket is rotatable inserted therein, a support bracket connecting the slider housings and a control portion selectively moving the support bracket and moving positions of the slider housings so as to change rotation centers of the inner brackets.
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公开(公告)号：US20190323388A1
公开(公告)日：2019-10-24
申请号：US16502361
申请日：2019-07-03
Applicant: DENSO CORPORATION
Inventor： Tetsuro MITSUTANI
Abstract: A sleeve includes: a supply port communicated with a hydraulic oil supply source; a primary control port communicated with a retard chamber, a secondary control port communicated with an advance chamber; and a drain port communicated with an outside of a valve timing adjustment device. A spool includes: a pressure accumulation space formed at an inside of the spool; a supply passage configured to connect between the pressure accumulation space and the supply port; a primary control passage configured to connect between the pressure accumulation space and the primary control port; a secondary control passage configured to connect between the pressure accumulation space and the secondary control port; and a recycle passage configured to connect between the primary control port or the secondary control port and the pressure accumulation space. The recycle passage and the drain port are connected with each other at the inside of the sleeve.
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公开(公告)号：US10450905B2
公开(公告)日：2019-10-22
申请号：US15916374
申请日：2018-03-09
Applicant: AISIN SEIKI KABUSHIKI KAISHA
Inventor： Yoshiaki Yamakawa , Masaki Kobayashi , Hiromitsu Shigyo
Abstract: A variable valve timing control device includes a valve unit including a spool having a plurality of land portions at an outer circumference of the spool, and being formed with a drain flow path inside the spool. The valve unit allows a second pump port and a lock port to communicate with each other in a case where the spool is set at an unlock position where a lock state of a lock mechanism is released, and the valve unit closes the second pump port with the land portion of the spool and allows the lock port to communicate with the drain flow path in a case where the spool is set at a lock position where the lock mechanism is allowed to be shifted in the lock state.
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Patent Agency Ranking
公开(公告)号：US10393037B2
公开(公告)日：2019-08-27
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
IPC: F02D41/00 , F02D13/02 , F01L13/00 , F01L1/047 , F01L1/344 , F01L1/34 , F01L1/356 , F01L1/053 , F01L1/26
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：US10337358B2
公开(公告)日：2019-07-02
申请号：US15756275
申请日：2016-08-01
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Kotaro Watanabe
Abstract: A valve timing control apparatus for an internal combustion engine includes: a drive rotation member; a housing; a vane rotor; and a front plate, the drive rotation member including a positioning mechanism including a guide portion which is formed on an inner circumference surface of the cylindrical wall, and which has an inclined shape whose an inside diameter is decreased from the one axial end side to the other axial end side, a mounting protrusion portion which is formed on the other end side of the guide portion, and on which an outer circumference surface of the housing is mounted to be positioned.
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公开(公告)号：US20190178114A1
公开(公告)日：2019-06-13
申请号：US16209124
申请日：2018-12-04
Applicant: AISIN SEIKI KABUSHIKI KAISHA
Inventor： Takashi IWAYA , Masaaki KANEKO , Toshiki SATO , Hiroyuki AMANO
Abstract: A valve timing controller includes: a driving side rotation member synchronously rotating with a crankshaft of an internal combustion engine; a driven side rotation member contained in the driving side rotation member and rotating integrally with a cam shaft for opening and closing a valve coaxially with a rotating axis of the driving side rotation member; an electromagnetic valve displacing a relative rotation phase between the driving side and driven side rotation members by supplying a working fluid to advancing and retarding chambers defined between the driving side and driven side rotation members; an intermediate locking mechanism holding the relative rotation phase in an intermediate locking phase; a phase detection section detecting the relative rotation phase; and a control section controlling the electromagnetic valve based on a detection signal of the phase detection section.
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公开(公告)号：US10208635B2
公开(公告)日：2019-02-19
申请号：US15569189
申请日：2016-08-22
Applicant: DENSO CORPORATION
Inventor： Yuuki Matsunaga
Abstract: A composite structure includes: a cover plate having a countersunk hole and a plate side fitting hole; a bearing plate having a screw hole and a screw side fitting hole located opposite from the plate side fitting hole through the screw hole; and a plate screw component including a screw part engaged with the screw hole, and a plate side fitting part and a screw side fitting part respectively fitted with the plate side fitting hole and the screw side fitting hole to be in alignment with each other. A difference δϕa in diameter between the plate side fitting hole and the plate side fitting part, a difference δϕb in diameter between the screw side fitting hole and the screw side fitting part, and an effective difference δϕc in diameter between the screw hole and the screw part satisfy a dimensional relation of δϕa
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公开(公告)号：US10161274B2
公开(公告)日：2018-12-25
申请号：US15500746
申请日：2015-05-26
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Yasuhide Takada
Abstract: A hydraulic control valve allows increased flexibility of port layout without requiring high dimensional accuracy. The hydraulic control valve includes a cylindrical valve body having, at a cylindrical shaft portion, retard and advance ports and reintroduction ports, and a spool valve provided slidably in an axial direction in the valve body and permitting switching between supply/discharge of working fluid to/from retard and advance hydraulic chambers through land portions. The control valve further includes a cylindrical sleeve formed with synthetic resin material and fixed to an outer peripheral surface of the cylindrical shaft portion, and an actuator that moves the spool valve in an axial direction. The sleeve has, at a peripheral wall thereof, retard and advance oil passage holes communicating with retard and advance ports, and has, on an inner peripheral surface thereof, communication grooves communicating with the reintroduction ports.
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