Preliminary design studies were performed on four continuously variable transmission (CVT) concepts for use with a flywheel equipped electric vehicle of 1700 kg gross weight. Requirements of the CVT's were a maximum torque of 450 N-m (330 lb-ft), a maximum output power of 75 kW (100 hp), and a flywheel speed range of 28,000 to 14,000 rpm. Efficiency, size, weight, cost, reliability, maintainability, and controls were evaluated for each of the four concepts which included a steel V-belt type, a flat rubber belt type, a toroidal traction type, and a cone roller traction type. All CVT's exhibited relatively high calculated efficiencies (68 percent to 97 percent) over a broad range of vehicle operating conditions. Estimated weight and size of these transmissions were comparable to or less than equivalent automatic transmission. The design of each concept was carried through the design layout stage.


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    Title :

    Design Studies of Continuously Variable Transmissions for Electric Vehicles


    Contributors:

    Publication date :

    1981


    Size :

    24 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Design studies of continuously variable transmissions for electric vehicles

    Parker, R. J. / Loewenthal, S. H. / Fischer, G. K. | NTRS | 1981


    Design Studies of Continuously Variable Transmissions for Electric Vehicles

    Fischer, George K. / Parker, Richard J. / Loewenthal, Stuart H. | SAE Technical Papers | 1981


    Design Studies of Continuously Variable Transmissions for Electric Vehicles

    R. J. Parker / S. H. Loewenthal / G. K. Fischer | NTIS | 1981