Advanced passenger car designs utilizing electric/hybrid drivlines with an engine/generator or fuel cell to generate electricity onboard the vehicle and electrical energy storage (a pulse power unit, such as an ultracapacitor) to load-level the engine/generator or fuel cell and to recover energy during vehicle braking are evaluated. All the cars have good acceleration performance (0 to 96 km.h-1 in 9 s to 10 s) and gradeability (96 km.h-1 on a 6 % grade). Computer simulaion results on the Federal City and Highway driving cycles for the hybrid vehicles show that driveline and vehicle design technology have a large effect on both fuel economy and emissions of the vehicles. The results indicate that by using the hybrid/electric drivelines in steel body, engine/generator powered vehicles, fuel economies of 50 mgp to 70 mpg (miles per gallon) are achievable and that composite body, fuel cell powered vehicles can have fuel economies of 150 mpg to 200 mpg gasoline equivalent. Intermediate fuel economies can be achieved using other combinations of vehicle material and driveline technologies. All the cars are projected to have emissions well below the California ULEV emission standards. The ultracapacitors used in the hybrid drivelines have an energy density of 10 Wh.kg-1 and store 300 Wh to 500 Wh of energy. Combined with on-off operation of the engine/generator or fuel cell, the ultracapacitors were maintained within 60 % to 90 % of their rated voltage by regenerative braking and onboard electricity generation.


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    Title :

    Electric/hybrid super car designs using ultracapacitors


    Additional title:

    Konstruktion von Superautos mit Elektro-Hybridantrieb unter Verwendung von Ultrakondensatoren


    Contributors:
    Burke, A.F. (author)


    Publication date :

    1995


    Size :

    7 Seiten, 3 Bilder, 7 Tabellen, 22 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





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