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锦湖轮胎质量问题被曝光在汽车领域掀起了轩然大波,有车族更是人人自危,害怕"中招",不仅锦湖轮胎的信誉大打折扣,众多整车企业也受到牵连,关于诚信的话题再次成为全社会焦点。 相似文献
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3.15已经过去一个月了,大家又慢慢淡化了对它的回忆。但围绕锦湖轮胎的后续进展的话题似乎并没有被车主们忽视,先是锦湖轮胎方面公布了不合格产品的批次,涉及轮胎数量30余万条。随后又有国内几个汽车企业开始针对使用属于召回批次里面的锦湖轮胎的车型予以召回,涉及车辆达到75480辆,如果按照每辆车5条轮胎计算(含备胎)就是要近40万条。从数字上看并不算矛盾,看来锦湖轮胎在零售市场上倒都是“合格”产品。 相似文献
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锦湖轮胎经过十多年的努力,目前已在中国新车OE配套轮胎市场的占有率上位居榜首。而7月19日,锦湖更在韩国同曼联足球队签订赞助协议。在签约仪式之前,锦湖轮胎副社长吴漳焕先生接受了《汽车杂志》的采访。[编者按] 相似文献
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William A. Podgorski Allan I. Krauter Richard H. Rand 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》1975,4(1):9-41
The equations of motion are derived for a single wheel steerable pneumatic tire system. Included in this system are a built-in wheel wobble and wheel-tire irregularities which produce oscillation of the normal load. Special emphasis is placed on the dynamic characterization of the tire cornering force and aligning torque. The results show that the built-in wheel wobble causes a steady shimmy which is large when the wheel rotation frequency is close to the natural shimmy frequency. The results also show that a normal load oscillation which has a frequency approximately twice the natural shimmy frequency causes a decrease in shimmy stability. 相似文献
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SUMMARY The equations of motion are derived for a single wheel steerable pneumatic tire system. Included in this system are a built-in wheel wobble and wheel-tire irregularities which produce oscillation of the normal load. Special emphasis is placed on the dynamic characterization of the tire cornering force and aligning torque. The results show that the built-in wheel wobble causes a steady shimmy which is large when the wheel rotation frequency is close to the natural shimmy frequency. The results also show that a normal load oscillation which has a frequency approximately twice the natural shimmy frequency causes a decrease in shimmy stability. 相似文献
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轻型货车轮胎接地压力分布实测 总被引:14,自引:0,他引:14
利用自主开发的轮胎接地压力测试仪,进行了轻型货车不同花纹和不同使用年限轮胎,在不同轮胎胎压和不同负荷作用下,轮胎的接地压力分布规律测量。实测结果发现:轻型货车轮胎与路面的接触形状更接近于矩形;新胎比旧胎的接地压力要均匀些;轮胎胎压与平均接地压力、轮胎负荷与平均接地压力、轮胎负荷与有效接地面积基本上呈线性关系。 相似文献
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为了进一步明确工程车辆翻新轮胎的力学性能,提高其使用寿命,通过构建工程车辆翻新轮胎计算机几何模型、有限元分析模型、承载变形特性试验系统,对工程车辆翻新轮胎承载变形特性进行有限元分析及试验研究,并与同型号新轮胎进行对比分析,获得静态接地工况下工程车辆翻新轮胎的载荷-变形、载荷-刚度、载荷-压缩率等特性规律,构建26.5R25工程车辆翻新轮胎径向承载变形数学模型。研究结果表明:工程车辆翻新轮胎的径向变形、侧向变形变化规律与新轮胎接近,径向与侧向变形均比同型号新轮胎稍小;当胎压一定时,随着载荷的增加,工程车辆翻新轮胎径向变形呈线性增大,当胎压较低时侧向变形呈线性增大,当胎压较高时侧向变形呈非线性增大;工程车辆翻新轮胎的径向刚度及压缩率受径向载荷和胎压的影响较大,载荷一定时,径向刚度随胎压的增大而增大;胎压一定时,工程车辆翻新轮胎的压缩率随径向载荷的增大而增大,且稍小于同品牌、同型号新轮胎的压缩率;旧胎体的不同老化程度对工程车辆轮胎翻新后的承载-变形特性会产生较大的影响;在低载工况下,工程车辆翻新轮胎和新轮胎径向刚度差异不大,在接近标准载荷及高载工况下,工程车辆翻新轮胎径向刚度较新轮胎大,且随着载荷的增大,工程车辆翻新轮胎和新轮胎径向变形差异不断加大。 相似文献
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Tire Modeling for Vertical Properties Including Enveloping Properties Using Experimental Modal Parameters 总被引:4,自引:0,他引:4
Fan Chengjian Guan Dihua 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2003,40(6):419-433
Summary Tire modal parameters reflect the natural properties of the tire. This paper models tire performance using experimental tire modal parameters to calculate the static vertical tire stiffness on both drum and flat road surfaces and the distribution of vertical and shear forces. The model was used to investigate tire enveloping properties. In addition to the radial and tangential displacements, the rotational angular displacement of the contact element is considered. This study examined the obstacle's effect on tire static vertical properties, the axle load responses under rectangle obstacles with a fixed axle height, and the effects of tire pressure on enveloping properties. 相似文献