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    Method and apparatus for diagnosing engine system
    121.
    发明授权
    Method and apparatus for diagnosing engine system 有权

    公开(公告)号：US10570845B2

    公开(公告)日：2020-02-25

    申请号：US15831171

    申请日：2017-12-04

    Applicant: Hyundai Motor Company ,  Kia Motors Corporation

    Inventor： Seungbum Kim

    IPC: F01L1/34 ,  F02D41/22 ,  F01L13/00 ,  F01L1/356 ,  F02D13/02 ,  F02D41/00 ,  F02D41/12

    Abstract: A method and apparatus for diagnosing an engine system are provided. An apparatus for diagnosing an engine system including a continuous variable valve duration (CVVD) apparatus according to an exemplary embodiment of the present invention may include: an accelerator pedal position detector configured for detecting a position of an accelerator pedal; a brake pedal position detector configured for detecting a position of a brake pedal; a vehicle speed detector configured for detecting a speed of a vehicle; an intake pressure detector configured for detecting an intake pressure; and a controller configured for determining whether a fuel cut condition is satisfied and determining whether the CVVD apparatus is in a failure state when the fuel cut condition is satisfied.

    VALVE TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
    123.
    发明申请
    VALVE TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 审中-公开

    公开(公告)号：US20200049033A1

    公开(公告)日：2020-02-13

    申请号：US16305487

    申请日：2017-03-01

    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

    Inventor： Seijiro NARITA ,  Toru SHINOMIYA ,  Kenji SATO

    IPC: F01L1/356 ,  F01L1/344

    Abstract: There is provided an engagement groove (31) which is formed in a first shoe (S1) of first to fourth shoes (S1), (S2), (S3), (S4) at a circumference position at which the engagement groove (31) is not overlapped an abutment surface (30) with a first vane (V1), which includes a pair of side surfaces (31a) and (31a) that are substantially parallel to the abutment surface (30), and with which a positioning pin (19) protruding from a sprocket (13) is engaged, so as to match phases of a housing main body (11) and the sprocket (13) in a rotation direction.

    Valve opening and closing timing control apparatus
    124.
    发明授权
    Valve opening and closing timing control apparatus 有权

    公开(公告)号：US10550736B2

    公开(公告)日：2020-02-04

    申请号：US15558091

    申请日：2015-09-25

    Applicant: AISIN SEIKI KABUSHIKI KAISHA

    Inventor： Hiroyuki Amano ,  Masaki Kobayashi ,  Yoshiaki Yamakawa

    IPC: F01L1/356 ,  F01L1/344 ,  F16K31/06 ,  F16K31/10

    Abstract: A valve opening and closing timing control apparatus includes a drive-side rotational body, a driven-side rotational body, an intermediate lock mechanism which selectively switches between a lock state where displacement of a relative rotational phase of the driven-side rotational body relative to the drive-side rotational body is restrained in an intermediate lock phase and an unlock state where the lock state is released, and an electromagnetic valve. At a time of predetermined operation of an internal combustion engine, a value of the drive current is set as a boundary current, and the value of the drive current to be set as the boundary current differs, by a predetermined value, from a value of the drive current at a time when the unlock state was switched to the lock state due to the change of the drive current.

    Control Device and Control Method for Variable Valve Timing Mechanism
    125.
    发明申请
    Control Device and Control Method for Variable Valve Timing Mechanism 审中-公开

    公开(公告)号：US20190360407A1

    公开(公告)日：2019-11-28

    申请号：US16332414

    申请日：2018-01-19

    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

    Inventor： Kentaro MIKAWA ,  Nobuhiko MATSUO ,  Naoki OKAMOTO

    IPC: F02D13/02 ,  F01L1/352 ,  F01L1/356

    Abstract: In a control device and a control method for a variable valve timing mechanism according to the present invention, the rotational phase of a camshaft is measured based on the cam angle signal and crank angle signal upon receiving each pulse of the cam angle signal, and the rotational phase change over time within a period of the cam angle signal is measured based on the motor angle signal. It is decided whether the cam angle signal and/or crank angle signal has a prescribed pulse pattern at a diagnostic timing that comes after the last pulse of the cam angle signal. When this decision result is positive, it is then decided whether the motor angle sensor operates normally or abnormally based on the rotational phase and the amount of rotational phase change that are measured when the last pulse of the cam angle signal is received before the diagnostic timing.

    Control unit for internal combustion engine
    127.
    发明授权
    Control unit for internal combustion engine 有权

    公开(公告)号：US10337417B2

    公开(公告)日：2019-07-02

    申请号：US15556267

    申请日：2016-03-30

    Applicant: AISIN SEIKI KABUSHIKI KAISHA

    Inventor： Satoshi Yabu ,  Masaaki Kaneko

    IPC: F02D13/02 ,  F01L1/34 ,  F01L1/352 ,  F01L1/356 ,  F01L1/344 ,  F01L1/053

    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.

    Control apparatus for internal combustion engine
    128.
    发明授权
    Control apparatus for internal combustion engine 有权

    公开(公告)号：US10161321B2

    公开(公告)日：2018-12-25

    申请号：US15264115

    申请日：2016-09-13

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Fumio Takamiya

    IPC: F02D41/00 ,  F02D41/30 ,  F02D41/40 ,  F02D13/02 ,  F02D23/02 ,  F02B37/18 ,  F02B37/02 ,  F01L9/04 ,  F01L1/356 ,  F02P5/04 ,  F02D37/02

    Abstract: A control apparatus for an internal combustion engine is configured to: open a waste gate valve if switching operation modes from supercharged lean burn operation to stoichiometric burn operation and if it is necessary to decrease an air amount; control an exhaust variable valve train so that, during a response delay period accompanying the waste gate valve being opened, a first valve opening period EX1 and a second valve opening period EX2 are set and the second valve opening period overlaps with a valve opening period IN; control a fuel injection valve so as to inject fuel of an amount necessary to realize the stoichiometric air-fuel ratio under a stoichiometric requested air amount during the response delay period; and control the second valve opening period EX2 of the exhaust valve so that, during the response delay period, the air amount comes close to the requested air amount.

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