单列时速 453 公里 相对交会时速 896 公里 这是CR450动车组样车 自去年底样车下线后，CR450动车组已经过多轮测试，成功达到时速450公里且各项指标合格。目前 正在开展的运用考核，俗称"刷里程"， CR450 动车组需按要求跑够 60 万公里 ，以考察动车组整车及各 系统的稳定性、可靠性。 在试验期间跑出的最新纪录 记者从国铁集团了解到 目前，CR450动车组已完成 不同速度级别、不同运用场景中的 多项型式试验 正在沪渝蓉高铁开展运用考核 据悉，CR450动车组投入商业运营前，需经历一套严谨而系统的试验验证流程，包括静态试验、低速 与高速动态试验、运用考核等。 试验中，CR450动车组的一组数据令人惊叹。 从 0 到时速 350 公里， CR450 动车组仅需 4 分 40 秒 ，比CR400动车组快了100秒！ 有何秘诀？ 中国铁道科学研究院首席研究员赵红卫将其归纳为：动力更强、阻力更小。 动力更强 ——CR450采用的永磁牵引系统比CR400效率提升了4%。 阻力更小 ——CR450动车组与既有动车组的最大区别在于对转向架区域进行了全包覆，裙板变得更低 了，露出来的轮子也更少了。同时动车组的 ...

Group 1 - The Chengyu Middle Line High-Speed Railway will operate at a speed of 400 km/h, reducing travel time between Chengdu and Chongqing to 50 minutes upon completion [1] - The railway is a key part of China's "Eight Vertical and Eight Horizontal" high-speed rail network, with a total length of 292 kilometers and a design speed of 350 km/h [2][3] - The railway will connect with several existing and under-construction high-speed rail lines, enhancing the transportation network in the Chengdu-Chongqing area and supporting the development of the Chengdu-Chongqing economic circle [3] Group 2 - The CR450 high-speed train is expected to be the core technology supporting the 400 km/h speed target, with ongoing technological innovations and infrastructure verification [4] - The CR450 train has achieved international leadership in key performance indicators such as operational speed, energy consumption, noise levels, and braking distance, promising a better travel experience [4] - The CR450 train has completed various stages of development, including prototype testing and performance validation, in preparation for trial operations [4][5]