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Analysis of Primary and Secondary Thrusts for A Metal Belt CVT Part 1: New Formula for Speed Ratio-Torque-Thrust Relationship Considering Band Tension and Block Compression
Technical Paper
2000-01-0841
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SAE 2000 World Congress
Language:
English
Abstract
In this paper, a new formula for calculating primary and secondary thrusts for metal belt CVT's will be proposed considering variation of band tension, block compression and active arc for each of the primary and secondary pulleys. For the secondary thrust, an effective friction coefficient is introduced considering the effect of flange deflection. Nondimensional primary and secondary thrust of the metal belt CVT by the new formula agree well with the experimental results except for low torque range, 0 <λ< 0.2 at a speed ratio i=1.0. The new formula can be used in design of the primary and secondary thrusts control system with sufficient accuracy.
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Authors
Citation
Lee, H. and Kim, H., "Analysis of Primary and Secondary Thrusts for A Metal Belt CVT Part 1: New Formula for Speed Ratio-Torque-Thrust Relationship Considering Band Tension and Block Compression," SAE Technical Paper 2000-01-0841, 2000, https://doi.org/10.4271/2000-01-0841.Also In
SAE 2000 Transactions Journal of Passenger Cars - Mechanical Systems
Number: V109-6; Published: 2001-09-15
Number: V109-6; Published: 2001-09-15
References
- Gerbert G. “Metal V-Belt Mechanics” ASME paper 84-DET-227 1 9 1984
- Kim H. Lee J. “Analysis of Belt Behavior and Slip Characteristics for a Metal V-Belt CVT” Mechanism and Machine Theory 29 865 876 1994
- Katsuya A. Sato T. Kurimoto K. “Analysis of Behavior of CVT Belt” Trans. JSAE, No. 44 71 76 1990
- Fujii T. Kurokawa T. Kanehara S. “A Study of a Metal Pushing V-Belt TypeCVT-Part 1: Relation Between Transmitted Torque and Pulley Trust” SAE 930666 1 11 1993
- Fujii T. Kurokawa T. Kanehara S. “A Study of a Metal Pushing V-Belt Type CVT-Part 2: Compression Force Between Metal Blocks and Ring Tension” SAE 930667 12 22 1993
- Karam D. Play D. “A Discrete Analysis of Metal V-Belt Drive” ASME 43 319 327 1992
- Kuwabara S. Fushimi Y. Fujii T. Kanehara S. “Study on a metal pushing V-belt type CVT: numerical analysis of forces acting on a belt at steady state” JSAE 9830190 117 122 1998
- Lee B. Kim H. “Discrete Analysis of Metal Belt CVT” Proc. of KSAE 2 545 550 1997