When a rotational fluctuation ΔNEeng of an engine is equal to or larger than a first threshold NEref1, a rotational fluctuation ΔNEmg1 of a motor MG1 that is calculated at a timing preceding the rotational fluctuation ΔNEeng of the engine by 180 degrees in terms of a rotational angle of a crankshaft is compared with a second threshold NEref2. When the rotational fluctuation ΔNEmg1 is equal to or larger than the second threshold NEref2, it is determined that the rotational fluctuation ΔNEeng of the engine has reached a value equal to or larger than a threshold NEref due to a disturbance such as running on a bad road or the like, and a misfire counter is maintained. When the rotational fluctuation ΔNEmg1 is smaller than the second threshold NEref2, it is determined that a misfire may be occurring in at least one of cylinders of the engine, and the misfire counter is incremented.


    Access

    Download


    Export, share and cite



    Title :

    Misfire determination device for internal combustion engine


    Contributors:

    Publication date :

    2017-01-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / F02B INTERNAL-COMBUSTION PISTON ENGINES , Brennkraftmaschinen mit innerer Verbrennung mit Verdrängerwirkung / G07C TIME OR ATTENDANCE REGISTERS , Zeit- oder Anwesenheitskontrollgeräte



    MISFIRE DETERMINATION DEVICE FOR INTERNAL COMBUSTION ENGINE

    KURISAKA ITSUYA / KUSHIHAMA NARITAKA | European Patent Office | 2023

    Free access

    MISFIRE DETERMINATION DEVICE FOR INTERNAL COMBUSTION ENGINE

    SUGIMOTO HITOSHI | European Patent Office | 2022

    Free access

    MISFIRE DETERMINATION DEVICE FOR INTERNAL COMBUSTION ENGINE

    SUGIMOTO HITOKI | European Patent Office | 2016

    Free access

    INTERNAL COMBUSTION ENGINE MISFIRE DETECTION DEVICE

    SUGIMOTO HITOSHI | European Patent Office | 2022

    Free access

    DEVICE FOR DECIDING MISFIRE OF INTERNAL COMBUSTION ENGINE AND METHOD FOR DECIDING MISFIRE

    AKIMOTO HIKOKAZU | European Patent Office | 2018

    Free access