The authors have developed a capacitor hybrid vehicle equipped with a newly developed capacitor system and a miller cycle CNG engine for low floor urban buses. The CNG engine drives a generator at over 40 % thermal efficiency. The newly developed capacitor system, since it has high energy and power density, is able to regenerate almost all the braking energy of a 14-ton bus at over 90 % charging efficiency. The internal resistance of the capacitor system is minimized by the capacitor itself and a new capacitor connection. Furthermore, the voltage dispersion of the capacitor cells is minimized by the capacitor charging control system. The fuel economy was improved by 166 % compared with the CNG low-floor bus and the vehicle efficiency reached over 45 % in the M15 mode test.


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    Titel :

    Development of capacitor hybrid system for urban buses


    Weitere Titelangaben:

    Entwicklung eines Hybridantriebs für einen Stadtbus auf Basis von Doppelschichtkondensatoren


    Beteiligte:
    Sasaki, M. (Autor:in) / Araki, S. (Autor:in) / Miyata, T. (Autor:in) / Kawaji, T. (Autor:in)

    Erschienen in:

    JSAE Review ; 23 , 4 ; 451-457


    Erscheinungsdatum :

    2002


    Format / Umfang :

    7 Seiten, 17 Bilder, 1 Tabelle, 5 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




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