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二十世纪三十年代晚期,米其林的研究人员Marius Mignol设计了一款概念产品,用相互间隔很宽的子午线状金属代替轮胎的侧壁。该原型轮胎独特的设计,当时在行业内被称作苍蝇笼。多项测试和测量表明,这种轮胎的胎面散热性极好,而传统的斜交轮胎在运动时,容易在轮胎侧壁产生和聚集大部分的热量。米其林集团坚信这种子午线轮胎技术的前景一片光明。在二次大战期间,这种技术的研究仍在法国秘密的进行着。1946年6月4日,米其林为这项技术申请了“X”子午线轮胎专利。几年后,子午线轮
In the late 1930s, Michelin researcher Marius Mignol designed a concept product to replace the sidewalls of tires with meridional metals that are widely spaced from one another. The unique design of the prototype tire was called a fly cage in the industry at the time. A number of tests and measurements have shown that this tire has excellent tread heat dissipation, whereas conventional bias tires tend to generate and accumulate most of the heat on the tire sidewalls during exercise. Michelin Group firmly believes that this radial tire technology has a bright future. During the Second World War, the study of this technique was still conducted secretly in France. On June 4, 1946, Michelin applied for the “X” radial tire patent for this technology. A few years later, the radial wheel