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| 255/50R20 109Y XL电动汽车低滚动阻力轮胎的设计 |
| Design of 255/50R20 109Y XL Electric Vehicle Tire with Low Rolling Resistence |
| Received:August 08, 2025 Revised:August 08, 2025 |
| DOI： |
| 中文关键词: 电动汽车轮胎；结构设计；施工设计；轻量化；低滚动阻力 |
| 英文关键词: electric vehicle tire；structure design；construction design；lightweight；low rolling resistance |
| 基金项目: |
| 中图分类号: |
| Author Name | Affiliation | E-mail | | YU Jun* | TTA（Qingdao） Tire Technology Co.，Ltd | jun.yu@tta-solution.com | | ZHANG Runbo | TTA（Qingdao） Tire Technology Co.，Ltd | | | LI Hongwei | TTA（Qingdao） Tire Technology Co.，Ltd | | | ZHU Qingshuai | TTA（Qingdao） Tire Technology Co.，Ltd | | | ZHANG Renzhi | TTA（Qingdao） Tire Technology Co.，Ltd | | | LIU Dongwei | TTA（Qingdao） Tire Technology Co.，Ltd | | | YANG Jinghui | TTA（Qingdao） Tire Technology Co.，Ltd | |
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| 中文摘要: |
| 本文介绍255/50ZR20 109Y XL 电动车低滚阻轮胎开发设计。 结构设计:外直径765mm,断面宽265mm,行驶面宽度224.4mm,行驶面弧度高18.41mm,胎圈着合直径508.4mm,胎圈着合宽度231.14mm,断面水平轴位置(H1/ H2)1.0,胎面采用四沟花纹设计,花纹深度7.4mm施工设计:胎面采用Profile式结构,胎体采用2层1000D/2高模低缩聚酯浸胶帘布,带束层采用2层4*0.225UT钢丝帘布,冠带层采用2层1260dtex/2改性锦纶66浸胶帘布,钢丝圈采用Φ1.295mm的低铜镀层回火胎圈钢丝,采用一次法成型机成型,B型硫化机硫化.成品性能试验结果表明,成品轮胎的外缘尺寸,强度性能,耐久性能和低气压性能以及高速性能均符合相关设计和标准要求,滚阻测试达到A等级。介绍255/50ZR20 109Y XL电动汽车低滚动阻力轮胎的设计。结构设计：外直径 761 mm，断面宽 280.5 mm，行驶面宽度 224.5 mm，行驶面弧度高 9.87 mm，胎圈着合直径 508.4 mm，胎圈着合宽度 231.14 mm，断面水平轴位置（H1/H2） 1.0，胎面采用三宽一窄纵向花纹沟的非对称花纹设计，花纹深度 7.4 mm，花纹饱和度 72.6%，花纹周节数 82。施工设计：胎面采用五复合挤出工艺挤出，带束层采用2层4×0.225UT钢丝帘布，冠带层采用2层1260dtex/2改性浸胶锦纶66帘布，胎体采用2层1100dtex/2高模量低收缩浸胶聚酯帘布，采用一次法成型机成型、B型硫化机硫化。成品轮胎试验结果表明，轮胎的充气外缘尺寸、强度、高速性能和耐久性能均符合相关设计和标准要求，滚动阻力性能达到国家标准A级。 |
| 英文摘要: |
| The design of 255/50R20 109Y XL electric vehicle tire with low rolling resistence was introduced.In the structure design，the following parameters were taken：overall diameter?761 mm，cross-sectional width?280.5 mm，width of running surface?224.5 mm，arc height of running surface?9.87 mm，bead diameter at rim seat?508.4 mm，bead width at rim seat?231.14 mm，maximun width position of cross-section（H1/ H2）?1.0，using asymmetric tread pattern design with three wide and one narrow longitudinal grooves，pattern depth?7.4 mm，black/total ratio?72.6%，and number of pattern pitches?82.In the construction design，the following processes were taken：five co-extrusion process for tread，two layers of 4×0.225UT steel cord for belt，two layers of 1260dtex/2 modified nylon 66 dipped cord for crown ply，two layers of 1100dtex/2 high modulus low shrinkage polyester dipped cord for carcass，using one-step building machine to build tire and B-type vulcanization press to cure tire.The test results of finished tire indicated that the inflated peripheral dimension，strength，high-speed performance and durability all met related design and standard requirements，and the rolling resistance performance reached
Class A of national standard. |
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