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Study on New Developed CVT Having Third Pulley, Tensioner Using Dry Hybrid V-Belts - How Does It Transmit Power at Both Steady and Transitional States?
Technical Paper
2004-01-0476
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A new three-pulley CVT (Continuously Variable Transmission) with a tensioner has been developed using dry hybrid V-belts. It can transmit higher torque than conventional two-pulley CVT without a tensioner, because the tensioner increases not only a lap angle where power is transmitting but also it can always keep the belt tension optimum. This study shows whether the Euler's power transmitting theory is applicable to the tensioner type CVT to characterize the CVT operation for preliminary design. The tensioner type CVT has also high shifting speed and it does not need large thrusts on both driving and driven pulleys during shifting since the minimum tension for torque transfer is assured in the slack-side string. The FEM analysis revealed the shifting mechanism and showed that the transmitting force distribution in the pulley groove for the newly developed CVT is almost the same as that for the conventional CVT.
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Authors
- Masafumi Inowaki - Doshisha Univ.
- Kazuya Okubo - Doshisha Univ.
- Toru Fujii - Doshisha Univ.
- Ryuichi Kido - Bando Chemical Industries, Ltd.
- Mitsuhiko Takahashi - Bando Chemical Industries, Ltd.
- Nobuhiro Ebi - Daihatsu Motor Co., Ltd.
- Makoto Tanikake - Daihatsu Motor Co., Ltd.
- Makoto Tanikake - Daihatsu Motor Co., Ltd.
Citation
Inowaki, M., Okubo, K., Fujii, T., Kido, R. et al., "Study on New Developed CVT Having Third Pulley, Tensioner Using Dry Hybrid V-Belts - How Does It Transmit Power at Both Steady and Transitional States?," SAE Technical Paper 2004-01-0476, 2004, https://doi.org/10.4271/2004-01-0476.Also In
SAE 2004 Transactions Journal of Passenger Cars: Mechanical Systems
Number: V113-6; Published: 2005-07-05
Number: V113-6; Published: 2005-07-05
References
- Takahashi, M. et al. Design and Development of a Dry Hybrid Belt (BANDO AVANCE) For CVT Vehicles Congress on Continuously Variable Power Transmission 254 259 1999
- Shimizu, M. et al. Study on power transmitting mechanisms for CVT using dry hybrid V-belts -Mechanisms for Change of Pitch Line and Transmitting Efficiency due to Pulley Tilting Proceeding of Helsinki 2002 FISITA World Automotive Congress 2002
- Hatada, K. et al. An Implicit FE Analysis of Power Transmitting Mechanisms of CVT Using a Dry Hybrid V-Belt SAE Technical Paper No 2002-01-0698 2002
- Inowaki, M. et al. Mechanisms of shifting Considering Pulley Flanges Tilting of Dry Hybrid V-Belt Type CVT Proceeding of JSAE Autumu Convention 170 2002