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CVT Power Transmitting Characteristics and Control Logics for Negative Torque  

송한림 (안산공과대 컴퓨터응용기계설계과)
이희라 (성균관대학교 대학원)
김현수 (성균관대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.10, no.1, 2002 , pp. 255-264 More about this Journal
Abstract
In this paper, the power transmitting mechanism for negative torque of the metal V-belt (MVB) CVT were investigated by theoretically analyzing variation of band tension, block compression forces for each of the primary and secondary pulleys. An experimental study was performed to investigate the speed ratio - thrust characteristics for negative torque. The experimental results are in good acoordance with the theoretical results. CVT line pressure control logic was suggested for negative torque based the speed radio - negative torque - thrust characteristics and the thrust ratio curves. The results of this study can be used as basic design materials for developing the CVT control system for negative torque.
Keywords
CVT(Continuously Variable Transmission); Negative torque; Speed ratio; Compression force; Line pressure;
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