Regenerative braking in rear wheel driven electric vehicles, while cornering and/or for low friction conditions, is rather limited. They tend to over-steer and become unstable. In common low cost and/or low weight setups the limit in curves determines the global limit of regenerative braking and, thus, an improvement of this limit provides an increase of the range extension through brake energy harvesting. Previous investigations on the prototype electric vehicle MUTE, developed at the TU München and revealed to the public at the 2011 IAA in Frankfurt, show, how torque-vectoring can be used to significantly enhance the stability during regenerative braking of the rear axle. This paper first introduces the relevant brake system features that require a global (though speed dependent) limit of regenerative braking. In the second part, a method for the proper application of these limits by figures of merit for cornering stability and energy recovery of regenerative braking with accelerator pedal control is presented. On this basis driver behavior is incorporated and the effects of different brake setups and active stability measures on can be directly compared.


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    Titel :

    Figures of merit for driving dynamics and regenerative braking energy recovery


    Beteiligte:


    Erscheinungsdatum :

    2012


    Format / Umfang :

    21 Seiten, 10 Bilder, 7 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Datenträger


    Sprache :

    Englisch




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