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    INTERNAL COMBUSTION ENGINE CONTROL DEVICE
    4.
    发明公开
    INTERNAL COMBUSTION ENGINE CONTROL DEVICE 审中-公开

    公开(公告)号：EP4050199A1

    公开(公告)日：2022-08-31

    申请号：EP20879440.4

    申请日：2020-09-18

    申请人： Hitachi Astemo, Ltd.

    发明人： SHIMADA, Atsushi ,  KUMANO, Kengo ,  SARUWATARI, Masayuki ,  ORYOJI, Kazuhiro ,  AONO, Toshihiro ,  KUSAKABE, Ryo

    IPC分类号： F02D45/00 ,  F02B19/08 ,  F02B19/12 ,  F02D41/02 ,  F02D43/00 ,  F02P5/15 ,  F02P13/00 ,  F02P15/08

    摘要： Conventionally, detection of the state of a sub-chamber has been impossible unless a sensor is installed near the sub-chamber, preventing appropriate engine control.
    An ECU 20 includes: a jet intensity estimating unit 51 for estimating the intensity of a flame jet by means of at least one of a primary current, a primary voltage, a secondary current, and a secondary voltage of an ignition device which is attached inside a sub-combustion chamber, injects into a main combustion chamber a flame jet generated by ignition of an air-fuel mixture inside the sub-combustion chamber, and supplies a secondary current to an ignition plug for igniting the air-fuel mixture in the main combustion chamber; and an engine control unit 52 which controls an internal combustion engine on the basis of a combustion state inside the sub-combustion chamber determined from the estimated intensity of the flame jet.

    ENGINE
    6.
    发明公开
    ENGINE 审中-公开

    公开(公告)号：EP3869026A1

    公开(公告)日：2021-08-25

    申请号：EP19874142.3

    申请日：2019-08-21

    申请人： Yanmar Power Technology Co., Ltd.

    发明人： KAKICHI, Yuki ,  SASAKI, Shohei

    IPC分类号： F02M26/49 ,  F02D43/00 ,  F02D45/00

    摘要： This engine includes an EGR device. The engine is provided with: an EGR gas temperature sensor; an EGR valve; an EGR control unit; an EGR valve position detection unit; a diagnosis unit; a first timer; a second timer; and a diagnosis control unit. The diagnosis unit diagnoses whether the EGR gas temperature sensor has failed, on the basis of a detected value from the EGR gas temperature sensor. The first timer, when the EGR valve is open, performs counting in accordance with the passage of time. The second timer, if a count value of the first timer is greater than or equal to a first threshold value set in advance, and if a predetermined condition is satisfied, performs counting in accordance with the passage of time. The diagnosis control unit prohibits diagnosis by the diagnosis unit if a count value of the second timer is less than a second threshold value set in advance, and permits the diagnosis if the count value is greater than or equal to the second threshold value.

    CONTROL DEVICE, ENGINE, AND CONTROL METHOD FOR ENGINE
    9.
    发明公开
    CONTROL DEVICE, ENGINE, AND CONTROL METHOD FOR ENGINE 审中-公开

    公开(公告)号：EP3832117A1

    公开(公告)日：2021-06-09

    申请号：EP19858827.9

    申请日：2019-08-28

    申请人： MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.

    发明人： SATO, Daisuke ,  YAMADA, Tomohide ,  KITA, Ryuji ,  NAKANO, Hiroki

    IPC分类号： F02D45/00 ,  F01N3/023 ,  F01N3/033 ,  F02D9/04 ,  F02D43/00 ,  F02M26/52

    摘要： Provided is a control device configured to be able to execute, in an engine which includes a DOC, a DPF, and a temperature increase unit including an exhaust throttle valve, for increasing a temperature of each of the DOC and the DPF, a forced regeneration process of removing PM deposited on the DPF by increasing the temperature of the DPF. The control device includes a flow rate estimation part configured to estimate an intake flow rate of a combustion gas sent into a cylinder of the engine. The flow rate estimation part is configured to estimate a first intake flow rate, which is the intake flow rate in the forced regeneration process, from an opening degree of the exhaust throttle valve and a first state amount which indicates an operation state of the engine including a rotation speed of the engine, based on a first relationship representing a relationship between the first intake flow rate, and the opening degree of the exhaust throttle valve and the first state amount, in the forced regeneration process.