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753 条记录 (耗时 0.023 秒)

    MARINE ENGINE
    11.
    发明公开
    MARINE ENGINE 审中-公开

    公开(公告)号：EP3767094A1

    公开(公告)日：2021-01-20

    申请号：EP19767911.1

    申请日：2019-03-14

    申请人： IHI CORPORATION

    发明人： MASUDA, Yutaka ,  UMEMOTO, Yoshiyuki ,  SHIMIZU, Toshihiko ,  TAKIMOTO, Takahiro

    IPC分类号： F02D15/02 ,  F02B75/04

    摘要： Provided is a marine engine (100), including: a piston; and a compression ratio controller (182) configured to execute lowering processing of moving a top dead center position of the piston toward a bottom dead center side when an engine rotation speed falls within a resonance occurrence range set in advance. A geometrical compression ratio is reduced, and a resonance stress caused by a torsional vibration in a rotary system can thus be suppressed while suppressing a decrease in thermal efficiency compared with a case in which retarding control is applied to a fuel injection timing or a closing timing of an exhaust valve.

    ENGINE
    12.
    发明公开
    ENGINE 审中-公开

    公开(公告)号：EP3767088A1

    公开(公告)日：2021-01-20

    申请号：EP19766912.0

    申请日：2019-03-14

    申请人： IHI CORPORATION

    发明人： MASUDA, Yutaka ,  UMEMOTO, Yoshiyuki ,  KANEHIRA, Ryoichi

    IPC分类号： F02B75/04 ,  F02B75/32 ,  F02D15/02 ,  F16J10/00

    摘要： Provided is an engine (100), including: a cylinder including a cylinder liner; a piston provided inside the cylinder liner; a piston ring provided on the piston; a contact detector (184) configured to detect a contact between a step formed in an inner peripheral surface of the cylinder liner and the piston ring; and a compression ratio controller (182) configured to control a top dead center position of the piston so that the piston ring at the top dead center position is located on a combustion chamber side with respect to the step when the contact is detected.

    INTERNAL COMBUSTION ENGINE CONTROL DEVICE
    18.
    发明公开
    INTERNAL COMBUSTION ENGINE CONTROL DEVICE 审中-公开

    公开(公告)号：EP3467301A1

    公开(公告)日：2019-04-10

    申请号：EP17802400.6

    申请日：2017-03-14

    申请人： Hitachi Automotive Systems, Ltd.

    发明人： YONEYA, Naoki ,  SARUWATARI, Masayuki ,  ORYOJI, Kazuhiro

    IPC分类号： F02P5/15 ,  F02B11/00 ,  F02D13/02 ,  F02D15/00 ,  F02D15/04 ,  F02D19/06 ,  F02D41/02 ,  F02D41/34 ,  F02D45/00 ,  F02M26/01 ,  F02M26/06

    摘要： An object of the present invention is to predict change of a combustion limit due to cycle variation of temperature and an EGR ratio and perform correction every cycle to decrease an amount of combustion consumption. Therefore, in an internal combustion engine control device that controls an internal combustion engine including a cylinder and an exhaust pipe, the internal combustion engine control device includes a control unit configured to perform EGR control of controlling an exhaust gas in the exhaust pipe to return to an inner cylinder of the cylinder, obtain temperature of the gas in the internal cylinder and an EGR ratio in a state where both an intake valve and an exhaust valve are closed in an combustion cycle, and correct a combustion parameter in a same combustion cycle as the combustion cycle on the basis of the obtained gas temperature and the obtained EGR ratio.