Method for reducing fuel consumption in hybrid motor vehicle which has an engine, multi-speed transmission, electric machine (e.g. motor / generator, BISG, CISG), and a battery, where an engine speed limit is set and used to determine a transmission ratio change point to optimise fuel consumption, the engine speed limit depending on a state of charge of the battery (SOC). The engine speed limit may depend on battery charge level permitting a temporary torque boost from the electric machine, hence engine speed limit could be set lower than if the SOC was insufficient. Baseline engine speed and second lower adjusted engine speed limits may be pre-set. A state of charge threshold may be used to ascertain whether a torque boost is possible. Gear change may be upshift or downshift. Transmission may be manual, resulting in a driver alert, or automatic, causing automatic shift.


    Access

    Download


    Export, share and cite



    Title :

    A method for reducing the fuel consumption of a mild hybrid vehicle


    Contributors:

    Publication date :

    2016-08-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    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



    Method and system for reducing fuel consumption of hybrid vehicle

    LI LEI / YAO YONGFENG / CHEN PENG et al. | European Patent Office | 2023

    Free access

    Method for reducing vehicle fuel consumption during coasting

    MARSDEN PAUL / VALERO THOMAS / MOURRE THOMAS et al. | European Patent Office | 2023

    Free access

    Reducing fuel consumption by improved vehicle efficiency

    Haraguchi,T. / Toyota Motor,JP | Automotive engineering | 2011


    A METHOD FOR REDUCING VEHICLE FUEL CONSUMPTION DURING COASTING

    MARSDEN PAUL / VALERO THOMAS / MOURRE THOMAS et al. | European Patent Office | 2019

    Free access

    MILD HYBRID VEHICLE AND METHOD OF MILD HYBRID VEHICLE

    LEE TAE SUK / JUNG YOUNG HO / BANG JUNG HWAN | European Patent Office | 2022

    Free access