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    Abnormal combustion detection apparatus for internal combustion engine
    1.
    发明授权
    Abnormal combustion detection apparatus for internal combustion engine 有权

    公开(公告)号：US09803566B2

    公开(公告)日：2017-10-31

    申请号：US14429608

    申请日：2014-02-14

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Yoshihiro Okada ,  Yutaka Hayakawa

    IPC: F02D35/02 ,  G01M15/12 ,  F02D41/00

    CPC classification number: F02D35/027 ,  F02D41/008 ,  F02D2200/101 ,  G01M15/12

    Abstract: An object of the present invention is to provide a technology that enables an abnormal combustion detection apparatus for a spark ignition internal combustion engine having a plurality of cylinders to detect abnormal combustion such as pre-ignition and knocking with improved accuracy. To achieve the object, according to the present invention, in an abnormal combustion detection apparatus for a spark-ignition internal combustion engine that determines or detects the occurrence of abnormal combustion by comparing a vibration intensity obtained from a measurement signal of a knock sensor and a determination threshold, when the occurrence of abnormal combustion is detected, the apparatus corrects a determination threshold for the next cylinder using as parameters the peak value of the vibration intensity at the time of the occurrence of abnormal combustion and the engine speed.

    Control device for internal combustion engine
    3.
    发明授权
    Control device for internal combustion engine 有权

    公开(公告)号：US10774803B2

    公开(公告)日：2020-09-15

    申请号：US16275332

    申请日：2019-02-14

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Yoshihiro Okada

    IPC: F02D19/12 ,  F02P5/04 ,  F02M25/028 ,  F02M25/022 ,  F02B47/02 ,  F02D37/02

    Abstract: A control device for an internal combustion engine which is provided with an engine body, a water injector for injecting water to the inside of an intake passage of the engine body, and a fuel injector for injecting fuel to be made to burn inside a combustion chamber of the engine body. The control device is provided with a water injection control part controlling the amount of injection of water from the water injector in the combustion cycle where fuel is injected from the fuel injector so that water vaporizing inside the intake passage during the suction stroke and water vaporizing inside the combustion chamber during the compression stroke are generated.

    Internal combustion engine and control method of internal combustion engine
    4.
    发明授权
    Internal combustion engine and control method of internal combustion engine 有权

    公开(公告)号：US10578032B2

    公开(公告)日：2020-03-03

    申请号：US15622335

    申请日：2017-06-14

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Yoshihiro Okada ,  Fumitsugu Tsuru

    IPC: F02D13/02 ,  F02B37/18 ,  F01L1/047 ,  F01L1/344 ,  F02B1/02 ,  F02B1/12 ,  F02B37/22 ,  F02D41/00 ,  F02D41/22 ,  F02D41/30 ,  F02P15/00 ,  F02D41/38

    Abstract: An electronic control unit of an internal combustion engine is configured to control the fuel injection valve and to control a spark plug if necessary such that fuel is combusted by pre-mixture compression ignition combustion or flame propagation combustion. The electronic control unit is configured to perform homogeneous combustion in a flame ignition operation range when switching failure has not occurred, the homogeneous combustion being combustion in which fuel homogeneously diffused into the combustion chamber is ignited using the spark plug and is combusted by flame propagation combustion. The electronic control unit is configured to perform spray-guided stratified combustion in a second operation range when the switching failure has occurred, the spray-guided stratified combustion being combustion in which fuel in the fuel injection path is ignited using the spark plug and is combusted by the flame propagation combustion.

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