CR450研发核心工程师团队接受《环球时报》专访：“全球最快高铁”如何炼成

Core Viewpoint - The CR450 high-speed train, recognized as a major engineering achievement during China's 14th Five-Year Plan, is undergoing a rigorous operational assessment of 600,000 kilometers before it can commence passenger service, showcasing significant advancements in speed, energy efficiency, and noise reduction [1][2][8] Group 1: Speed and Performance - The CR450 has set impressive records, achieving a single-unit speed of 453 kilometers per hour and a relative speed of 896 kilometers per hour during tests, marking a significant leap from the previous CR400 model [2][4] - The design innovations have allowed the CR450 to accelerate from 0 to 350 kilometers per hour in just 4 minutes and 40 seconds, which is 100 seconds faster than the current CR400 model [4] Group 2: Technological Innovations - The CR450 features a comprehensive aerodynamic design overhaul, reducing overall resistance by 22% compared to the CR400, which is a leading achievement in the global high-speed rail sector [5][6] - The train employs a unique integrated bogie structure that minimizes shape and interference drag, contributing to its enhanced speed capabilities [5] Group 3: Noise and Comfort - Despite the increase in speed, the CR450 maintains a noise level below 70 decibels at 400 kilometers per hour, equivalent to the noise of a car traveling at 70 kilometers per hour, ensuring passenger comfort [6] - The train's design incorporates targeted noise reduction strategies, addressing various noise sources and propagation paths to achieve a quiet travel experience [6] Group 4: Energy Efficiency - The CR450 achieves a 20% reduction in energy consumption compared to the CR400, despite a 50-kilometer increase in speed, demonstrating a reverse optimization of speed and energy efficiency [6][7] - The use of lightweight materials such as carbon fiber composites and magnesium alloys has contributed to a total weight reduction of 50 tons, further enhancing energy efficiency [7] Group 5: Industry Impact - The development of the CR450 has stimulated the formation of an industrial chain involving over 2,000 companies across more than 20 provinces, creating a robust railway technology innovation system [8] - The project exemplifies a dual-driven model of "technology + industry," establishing a leading position in high-speed train research and manufacturing capabilities globally [8]