In order to realize ultra-low rolling resistance coefficient (RRC) tire without compromising on safety and other performance, a series of size effect study has been done through numerical and experimental analyses. Since highly promising results have been obtained through the fundamental simulation study, actual large size tires have been developed for verifications of their performance in comparison with a current fuel-efficient tire. In the experimental analysis, indoor measurements and actual vehicle tests at proving ground have been done. The results of indoor measurements have shown appreciable performance of the L&N tire with respect to the current fuel-efficient tire and verified the size effect in terms of rolling RRC (-30%), CP (+17%), Wet-grip (+8%), and so on. In addition, the results of coasting down test have shown about 5% of the Cd value reduction as one of the key concepts of LNC; besides constant speed fuel consumption tests at 60 km/h have shown about 10% of the fuel economy improvement by the L&N tire with respect to the current fuel-efficient tire as well. Although the L&N tire gives noticeable positive performance as alternatives for conventional eco-tires, negative aspects represented by the increase of the vertical stiffness which gives strong impact on riding comfort cannot be overlooked. Nevertheless, as a tire manufacturer, we would like to propose the Large and Narrow Concept, so called LNC, for next generation vehicles with a great hope of developing a total package of tire-suspension system to deal with tire-vehicle interaction issues for making full use of the LNC's advantages.


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    Title :

    Development of a next-generation-size tire for eco-friendly vehicles


    Contributors:


    Publication date :

    2013


    Size :

    22 Seiten, 25 Bilder, 7 Quellen


    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English




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