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International Journal of Automotive Technology > Volume 24(3); 2023 > Article
International Journal of Automotive Technology 2023;24(3): 693-703.
doi: https://doi.org/10.1007/s12239-023-0058-x
Chen Liang , Dong Hui Sun , Chang Da Li , Liu Ji , Te Ma , Zhi Gao
School of Automotive and Traffic Engineering, Jiangsu University
PDF Links Corresponding Author.  Chen Liang  , Email. liangchen@ujs.edu.cn
The functions of the tire can be fully performed only under the appropriate inflation pressure. Tire inflation pressure loss rate (IPLR) is an important indicator used to evaluate tire inflation pressure retention performance. When the tire is under a rolling state, the temperature will increase leading to an accelerated oxidation process. Standard tire IPLR test is costly and time-consuming. In order to simulate the tire IPLR under the steady rolling state, the permeability parameters of rubbers and rubber-cord components (belts & carcass) are tested. Moreover, the oxidation reaction is coupling with the IPLR model based on the basic autoxidation scheme (BAS). The simulation results show that the IPLR of the tire under rolling state increases obviously. A novel calculation method of rubber oxygen consumption is proposed and applied to the oxygen consumption of different parts of the tire. Two approaches are adopted to reduce tire IPLR based on the innerliner structure design. This simulation method can predict tire IPLR not only under steady rolling state but also under static state and even under tire aging condition in oven. It also provides an important model basis for tire aging and life prediction research in the future.
Key Words: Tire inflation pressure loss rate, Oxidation reaction, Temperature field, Finite element analysis, Tire aging
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