The analysis of an influence of rubber V-belt physical properties on CVT efficiency

International Automotive Conference 2018

Kot, A.^1 ; Grzegozek, W.^1 ; Szczypiski-Sala, W.^1

Institute of Automobiles and Internal Combustion Engines, Cracow University of Technology, Al. Jana Pawla II 37, Krakow

31-864, Poland^1

关键词: Belt velocity;    Bench tests;    Contactless measurement;    CVT efficiency;    Drive systems;    Overall efficiency;    Stiffness parameters;    Two wheeled vehicles;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/421/2/022017/pdf
DOI  :  10.1088/1757-899X/421/2/022017

来源: IOP

【 摘 要 】

This work deals with the analysis of the CVT efficiency for three different rubber V-belts. The bench tests have been conducted on the complete light two-wheeled vehicle drive system so the experiments refer to real exploitation conditions. The research has been performed for fixed gear ratios. The overall efficiency and belt slip have been specified. The longitudinal belt velocity has been measured by the contactless measurement head. The basic belts physical properties have been estimated and significant dissimilarities of their construction details, used materials and stiffness parameters have been revealed. The explicit differences of overall efficiency and belt slip have been observed between tested belts. The V-belt features limiting specified type of losses contributes to increasing other losses at the same time. Furthermore the gear ratio essential influence on the belt slip has been noticeable. The amount of slip value indicates that this is significant part of the total power losses as it has been described by Bertini. However it clashes with the Chen research, where the slip corresponds with the marginal part of the overall losses.