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Internal Thrust Force Analysis of CVT Push Belt
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 17, 2016 by SAE International in United States
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A CVT belt is composed of multiple elements and layered rings. Each of these component parts generates loss, including relative slippage caused by the geometrical relationship between the elements and innermost ring layer. An effective way of increasing CVT efficiency is to reduce this slippage. However, since the relative slippage also controls whether the rings transmit constant torque at all times, reducing the slippage will also have an effect on the torque transmission performance of the rings. Therefore, to improve CVT efficiency by reducing the relative slippage, it is first necessary to analyze the changes to torque transmission. However, this slippage is a phenomenon of the inner portion of the belt and it is extremely difficult to identify the internal thrust force when actual load is applied. This paper describes experiments carried out to analyze the changes in each torque transmission ratio when the relative slippage between the elements and innermost ring layer changes. It also compares the results of these experiments with the results of analysis performed using the finite element method to enable the same analysis to be carried out by simulation.
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CitationHarima, K., Tsuchiya, S., Morino, T., and Nagasawa, Y., "Internal Thrust Force Analysis of CVT Push Belt," SAE Technical Paper 2016-01-2353, 2016, https://doi.org/10.4271/2016-01-2353.
- Kobayashi, D., Mabuchi, Y., and Katoh, Y., "A Study on the Torque Capacity of a Metal Pushing V-Belt for CVTs," SAE Technical Paper 980822, 1998, doi:10.4271/980822.
- Shimizu, H., Kobayashi, D., Kawashima, J., and Kato, Y., "Development of 3-D Simulation for Analyzing the Dynamic Behavior of a Metal Pushing V-Belt for Cvts," SAE Technical Paper 2000-01-0828, 2000, doi:10.4271/2000-01-0828.
- Saito, T. and Miyamoto, K., “Development of Simulation Technique for Element Stress Prediction of Metal Pushing V-belt,” Proceedings of the Society of Automotive Engineers of Japan No. 20055657.
- Kitagawa, T., Fujii, T., and Kanehara, S., "A Study on a Metal Pushing V-Belt Type CVT (Part 4: Forces Act on Metal Blocks when the Speed Ratio is Changing)," SAE Technical Paper 950671, 1995, doi:10.4271/950671.
- Fushimi, Y., Fujii, T., and Kanehara, S., "A Numerical Approach to Analyze the Power Transmitting Mechanisms of a Metal Pushing V-Belt Type CVT," SAE Technical Paper 960720, 1996, doi:10.4271/960720.
- Kuwabara, S., Fujii, T., and Kanehara, S., "Power Transmitting Mechanisms of CVT Using a Metal V-Belt and Load Distribution in the Steel Ring," SAE Technical Paper 980824, 1998, doi:10.4271/980824.