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Development of New Continuously Variable Transmission for Electric Bicycles
Technical Paper
2005-32-0037
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English
Abstract
A new continuously variable transmission for an electric bicycle (EB-CVT) was developed. The EB-CVT has a new mechanism of the traction drive transmitting power through contacts between inner sphere and outer sphere. The EB-CVT permits three propulsion modes: human-power only, motor-power only or motor-power plus human-power and has high power efficiency with large torque capacity despite narrow space to be installed in. The continuously varying speed ratio enables the EB-CVT to increase efficiency and to improve driveability. The inner spherical surface contacts help satisfying large torque capacity. After minute processes of a conceptual design, performance analysis and optimization, a prototype is manufactured and installed in an electric bicycle to run road test. The performances and reliabilities of the EB-CVT are evaluated.
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Authors
Citation
Park, M. and Park, N., "Development of New Continuously Variable Transmission for Electric Bicycles," SAE Technical Paper 2005-32-0037, 2005.Also In
References
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