Based on the next generation tire technology called "ologic", a series of large and narrow size tires for A to C-segment vehicles have been proposed respectively and their performance evaluations with respect to OE tires have been carried out for the expansion of the ologic application. In the contact patch dynamics study, advantages of the high IP usage for the ologic tires under the basis of synergetic size effect have been clearly seen in terms of a drastic RRC reduction along with high CP by fully utilizing the characteristics of uniform contact stress distributions. In addition, the narrow and long contact patch shape has shown appreciable macro drainage for preventing hydroplaning phenomenon and keeping large adhesive region in the contact area on the wet road surface. The combination of macro drainage and uniform contact characteristics for the ologic tires make it possible to exhibit equivalent or higher WGI with respect to the reference OE tires. In addition to the drastic RRC reduction of the ologic tire at an ordinary temperature condition, a temperature dependency of RRC considering a fuel efficiency at winter season has been evaluated. As a result, conventional eco-tire has shown more than 3 times larger RRC at 0° C in comparison with that of 30° C while less than double of RRC at 0° C with respect to the conventional eco-tire's RRC at 30° C has been observed for the ologic tire. These temperature dependencies increase the difference of RRC at low temperature conditions beneficial for the fuel efficiency in cold climate. Results of the objective handling evaluations have shown promising ologic's potential on handling performance as well from an ologic's capability point of view in terms of compatibility among environment, safety, and drivability. Finally, suitability of ologic's narrow SW on Run-Flat Technology has been observed through the feasibility study and further detail study will be proceeded in the future. As a basis of ologic concept, increase of vertical stiffness having an impact on riding comfort is inevitable; however, as a tire manufacturer, we would like to propose the Large and Narrow Tire Technology, so called ologic, 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 ologic's advantages.
Development of large and narrow tire technology as "Ologic"
2014
29 Seiten, Bilder, Tabellen, 11 Quellen
Conference paper
Storage medium
English
Development of large and narrow tire technology as Olonic
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