On April 23, 2022, China National Railway Group Co., Ltd. (National Railway Group) pointed out that the new Fuxing high-speed comprehensive inspection train independently developed by China and the world's leading high-speed comprehensive inspection train was put into operation. As a high-speed EMU new technology verification platform, the car participated in the preliminary test of the CR450 EMU development. On April 12, it successfully achieved a single-train speed of 403 kilometers per hour in the tunnel and a relative intersection speed of 806 kilometers per hour in the Badong-Wanzhou section of the Zhengzhou-Chongqing high-speed railway; On April 21, the Puyang-Zhengzhou section of the Jinan-Zhengzhou high-speed railway successfully achieved a single-train speed of 435 kilometers per hour on the open line and a relative intersection speed of 870 kilometers per hour, setting a world record for the speed of the high-speed EMU train on the open line and the tunnel. This marks the full launch of the "CR450 Science and Technology Innovation Project" included in the national 14th Five-Year Plan, which will provide the most important technical support and guidance for the development of the CR450 EMU, and will also provide the most important support and guarantee for the construction of a 350 km/h safety standard demonstration line. .

The person in charge of the Science and Information Department of China National Railway Group introduced that China National Railway Group thoroughly implemented the innovation-driven development strategy of the Party Central Committee and the State Council, gave full play to the leading role of high-speed rail technology innovation, and cooperated with my country's high-speed rail design and manufacturing related enterprises, universities, and scientific research institutes. The high-speed rail intelligent EMU has developed the world's leading new Fuxing high-speed comprehensive inspection train. The car adopts 9 new technologies such as eddy current braking, carbon ceramic brake disc, permanent magnet traction system, and active control pantograph independently developed by my country. It consists of 4 EMUs and 4 trailers, which enhances the safety of EMU trains. The overall performance has reached the world's leading level, filling a number of domestic technical gaps.

Since April 2022, the world's leading new Fuxing high-speed comprehensive inspection train has carried out the preliminary test of the development of the CR450 EMU on the Ji-Zheng High-speed Railway and the Zheng-Yu High-speed Railway, and carried out high-speed operation and high-speed intersection conditions on the open track and tunnel respectively. , aerodynamics, resistance, noise and other more than 60 scientific experiments, for the first time in the world, the open-line intersection with a single-column speed of 435 kilometers per hour and a relative speed of 870 kilometers per hour and a single-column tunnel intersection with a speed of 403 kilometers per hour and a relative speed of 806 kilometers per hour have achieved different results. The characteristic data of EMU trains and infrastructures such as high-speed railway foundations and tunnels under working conditions show good performance of relevant indicators, and the changing laws of safety and comfort parameters related to train speed improvement are explored.

The person in charge pointed out that the world's leading new Fuxing high-speed comprehensive inspection train was put into operation and successfully carried out a series of scientific experiments, which verified the performance of the new technology equipment, explored the boundary conditions for the operation of the EMU under higher speed conditions, and further enriched and expanded the The basic theoretical research results and engineering practice experience of China's high-speed railway are of great significance for improving the self-reliance and self-reliance of railway technology and consolidating my country's leading position in the world of high-speed railway. Editor/He Yuting