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    Continuously variable valve duration apparatus and engine provided with the same
    1.
    发明授权
    Continuously variable valve duration apparatus and engine provided with the same 有权

    公开(公告)号：US10815838B1

    公开(公告)日：2020-10-27

    申请号：US16692512

    申请日：2019-11-22

    Applicant: HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

    Inventor： You Sang Son ,  In Sang Ryu ,  Kyoung Pyo Ha ,  Dongheon Park ,  Back Sik Kim ,  Seung Jae Lee

    IPC: F01L1/053 ,  F01L13/00 ,  F02D13/02

    Abstract: A continuously variable valve duration apparatus may include a camshaft, a cam unit including a cam, and the camshaft inserted into the cam, a guide shaft on which a guide screw thread is formed and disposed perpendicular to the camshaft, a guide bracket on which the guide shaft is mounted, an inner wheel configured to transmit 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, and the wheel housing disposed within the guide bracket, a worm wheel to which an inner screw thread configured to engage with the guide screw thread is formed therewithin, and to which an outer screw thread is formed thereon, and the worm wheel disposed within the wheel housing, a control shaft on which a control worm configured to engage with the outer screw thread is formed.

    System and method for controlling valve timing of continuous variable valve duration engine
    3.
    发明授权
    System and method for controlling valve timing of continuous variable valve duration engine 有权

    公开(公告)号：US10145313B2

    公开(公告)日：2018-12-04

    申请号：US15368408

    申请日：2016-12-02

    Applicant: Hyundai Motor Company

    Inventor： In Sang Ryu ,  Kyoung Pyo Ha ,  You Sang Son ,  Kiyoung Kwon

    IPC: F02D13/02 ,  F01L1/34 ,  F02D41/26 ,  F01L1/047 ,  F02D41/00 ,  F01L1/344 ,  F01L13/00 ,  F01L1/053

    Abstract: A method for controlling valve timing of a continuous variable valve duration engine may include: 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 a valve overlap between an exhaust valve and an intake valve by using an exhaust valve closing (EVC) timing in a first control region; advancing an intake valve closing (IVC) timing and applying a maximum duration to the exhaust valve in a second control region; advancing the IVC timing and the EVC timing in a third control region; controlling the EVC timing in a fourth control region; controlling a throttle valve to be fully opened and controlling the IVC timing in a fifth control region; and controlling the throttle valve to be fully opened and advancing the IVC timing in a sixth control region.

    System and method for controlling valve timing of continuous variable valve duration engine
    4.
    发明授权
    System and method for controlling valve timing of continuous variable valve duration engine 有权

    公开(公告)号：US10132249B2

    公开(公告)日：2018-11-20

    申请号：US15340673

    申请日：2016-11-01

    Applicant: HYUNDAI MOTOR COMPANY

    Inventor： In Sang Ryu ,  Kyoung Pyo Ha ,  You Sang Son ,  Kiyoung Kwon

    IPC: F02D13/02 ,  F01L1/34 ,  F02D41/00 ,  F02D41/26 ,  F01L1/053 ,  F02D41/14 ,  F01L13/00 ,  F01L1/344

    Abstract: The present disclosure provides a system and a method for controlling valve timing of a continuous variable valve duration engine, including: classifying a plurality of control regions based on engine load and speed; applying a maximum duration to an intake valve and a long duration to an exhaust valve in a first control region; maintaining a maximum valve overlap in a second control region; advancing intake valve closing (IVC) timing and exhaust valve closing (EVC) timing in a third control region; applying a short duration to the exhaust valve and controlling the IVC timing to bottom dead center in a fourth control region; controlling a throttle valve to be fully opened, and controlling the IVC timing to an angle after BDC in a fifth control region; and applying the long duration to the exhaust valve, and controlling the IVC timing to prevent knocking in a sixth control region.

    Control method using continuous variable valve duration apparatus
    6.
    发明授权
    Control method using continuous variable valve duration apparatus 有权

    公开(公告)号：US09926858B2

    公开(公告)日：2018-03-27

    申请号：US14954849

    申请日：2015-11-30

    Applicant: HYUNDAI MOTOR COMPANY

    Inventor： Kiyoung Kwon ,  Ingee Suh ,  Kyoung Pyo Ha ,  In Sang Ryu ,  Back Sik Kim

    IPC: F02D13/02 ,  F01L13/00 ,  F01L1/053 ,  F01L1/26 ,  F01L13/08 ,  F01L1/047 ,  F01L1/356

    CPC classification number: F02D13/0211 ,  F01L1/053 ,  F01L1/267 ,  F01L1/356 ,  F01L13/0015 ,  F01L13/08 ,  F01L2001/0473 ,  F01L2013/0084 ,  F01L2013/103 ,  F01L2820/01 ,  Y02T10/18

    Abstract: A control method using a continuous variable valve duration apparatus implements a continuous variable valve duration apparatus which includes a wheel mounted on a camshaft and having a wheel key so as to control duration of an intake valve of an engine, a cam unit having a cam and a cam key, adapted such that the camshaft is inserted thereinto, and being disposed so as to vary relative phase of the cam with respect to the camshaft, an inner bracket connected with the wheel key and the cam key, a slider housing being adapted such that the inner bracket is rotatably inserted thereinto and disposed so as to move vertically with respect to the engine, a controller varying a position of the slider housing so as to adjust rotation center of the inner bracket, and a guide unit guiding motion of the sliding housing. The control method includes calculating a required air amount for maintaining idle rotation speed of the engine by the controller when the engine is an idle state; mapping a supplied air amount in accordance with duration of the intake valve or the exhaust valve by the controller; setting a target valve duration for supplying the required air amount of the engine by the controller; and controlling duration of the intake valve or exhaust valve according to the set target valve duration by the controller.

    System and method for controlling valve timing of continuous variable valve duration engine
    10.
    发明授权
    System and method for controlling valve timing of continuous variable valve duration engine 有权

    公开(公告)号：US10428747B2

    公开(公告)日：2019-10-01

    申请号：US15839606

    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: F01L1/344 ,  F02D13/02 ,  F02D41/00 ,  F02B25/14 ,  F02D9/02

    Abstract: 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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