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Study on Wide Ratio Range Toroidal IVT
Technical Paper
2011-01-2032
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The author describes a wide ratio range, half-toroidal, continuously variable transmission (CVT) and discusses how this CVT can contribute to improved fuel economy for passenger vehicles. Technologies that have been applied to improve the CVT are first discussed where the author describes how a higher traction coefficient can expand the ratio range of the toroidal variator. Then, improvements to the infinitely variable transmission (IVT) are discussed. Details on how the IVT has two driving modes and an infinite ratio range are discussed; with further details on factors that can improve fuel economy by expanding the over drive ratio. In order to expand the overdrive ratio of the IVT, the author mounted a newly developed, wide ratio range variator and adopted a direct-drive mode for the high-speed driving mode of the IVT. The author finally describes the process used to determine the final gear ratio of the IVT and the calculation results of fuel consumption of the vehicle as it relates to the IVT.
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Citation
Inoue, T. and Nishii, H., "Study on Wide Ratio Range Toroidal IVT," SAE Technical Paper 2011-01-2032, 2011, https://doi.org/10.4271/2011-01-2032.Also In
References
- Toyoda, T. Imanishi, T. Inoue, E. “Fuel Economy Improvement Items with Toroidal Continuously Variable transmission” CVT2010 Proceedings 67 72 2010
- Nakano, M. Kumura, H. Sugihara, J. Mori, H. Maruyama, N. “Development of a Large Capacity Half-Toroidal CVT” SAE 2000-01-0825 2000
- Ochiai, N. Kikuchi, A. Nogi, T. “On the Advanced Efficiency Analysis for Half Toroidal CVT (1st Report)” Proc. of JSAE No.21-03 1 2003
- Nishii, H. Noji, S. Inoue, T. “Improvements of Half Toroidal CVT” Proc. of CVT·HYBRID 2007 Yokohama JSAE 165 170 2007
- Miyaji, T. Tamoto, Y. Koga, H. Hata, H. “Advanced Traction CVT Fluid for Innovating Transmission Technology” Proc. of CVT· HYBRID 2007 Yokohama JSAE 73 78 2007
- Imanishi, T. Toyoda, T. Shinojima, T. Inoue, E. “Development of Next-Generation Half-Toroidal IVT System” Review of Automotive Engineering 28 365 369 2007