Abstract Range extender modules are one option to compensate for short drive ranges of electric vehicles. The close interaction of combustion engine and generator poses new challenges in development. A key requirement for range extender systems is to be light and virtually imperceptible in operation. High-speed electrical machines aim at increasing power density. However, their introduction in a range extender requires a gearbox. The combustion engine torque fluctuations can lead to rattle in the gearbox. The rattle can be overcome by a dual mass flywheel. An interdisciplinary model is developed and used to analyse three different range extender systems: one with a low speed generator without gearbox, one with a high-speed generator, and one with a high-speed generator and a dual mass flywheel. The efficiency was found to be higher for the system with a low speed generator, whereas the power density and the costs are beneficial for the high-speed concept. A dual mass flywheel eliminates the changes of torque direction in the gearbox. It reduces the speed fluctuations of the gearbox and generator by over 90 % compared to the low speed setup. But it increases rolling moment and subsequently chassis excitation compared to a setup with only a gearbox.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Range Extender Module Transmission Topology Study


    Contributors:

    Published in:

    Publication date :

    2018-09-12


    Size :

    10 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Range Extender Module Transmission Topology Study

    Herold, Konrad / Böhmer, Marius / Savelsberg, Rene et al. | Online Contents | 2018


    Automobile range extender control method, range extender control module and range-extended automobile

    JIANG ZHENMIN / WEN LONGXUAN / ZHANG QIWEN | European Patent Office | 2024

    Free access

    Range extender body, range extender, range extender design method and vehicle

    WANG MINGMING / LI JING / ZHANG GUIQIANG et al. | European Patent Office | 2024

    Free access

    Gear transmission type range extender

    LUO WEI / LI YONGJIAN / HE SHUANGGUI et al. | European Patent Office | 2024

    Free access

    Range extender

    SUN JUANJUAN / HUANG ZHIFU | European Patent Office | 2025

    Free access