An imbalance detection device is provided. An obtainment process includes obtaining a rotation waveform variable based on a detection value of a sensor that detects a rotational behavior of a crankshaft, and an air-fuel ratio detection variable in each of a plurality of first intervals. A calculation process includes calculating an imbalance variable based on an output of a mapping having a value obtained by the obtainment process as an input. The imbalance variable indicates a degree of variations in an air-fuel ratio of the internal combustion engine. The rotation waveform variable indicates a difference between instantaneous speed variables that are variables corresponding to the rotational speed of the crankshaft in each of the second intervals.


    Access

    Download


    Export, share and cite



    Title :

    IMBALANCE DETECTION DEVICE, IMBALANCE DETECTION SYSTEM, DATA ANALYSIS DEVICE, AND CONTROLLER FOR INTERNAL COMBUSTION ENGINE


    Contributors:

    Publication date :

    2020-08-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F02B INTERNAL-COMBUSTION PISTON ENGINES , Brennkraftmaschinen mit innerer Verbrennung mit Verdrängerwirkung / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF



    Imbalance detection device, imbalance detection system, data analysis device, and controller for internal combustion engine

    MUTO HARUFUMI / KATAYAMA AKIHIRO / MORI KOHEI et al. | European Patent Office | 2022

    Free access


    INTERNAL AIR PRESSURE IMBALANCE (IAPI) ENGINE

    BLANKMAN STEVEN | European Patent Office | 2017

    Free access

    Internal air pressure imbalance (IAPI) engine

    BLANKMAN STEVEN MICHAEL | European Patent Office | 2017

    Free access

    Vehicle force imbalance detection

    RAAD JOSEPH M / SLAVIN DANIEL F / RECKER DARREL ALAN et al. | European Patent Office | 2020

    Free access