Shulou(Shulou.com)11/24 Report--

Thanks to CTOnews.com netizens who can change their names again, Harry12345, Mr. Aviation, West window, grass Luo Yuzi clues delivery! CTOnews.com, July 2, in order to speed up the research and development of new products of Fuxing EMU with higher speed, safer, more environmentally friendly, more energy-saving and more intelligent, China National Railway Group Co., Ltd. (China Railway Group) announced that the performance verification test of new technical components of China's new generation EMU (CR450 EMU) has made a breakthrough in the section from Fuqing to Quanzhou of Fuzhou-Xiamen high-speed railway. The performance verification test of the new technology components under the condition of higher running speed is a complete success.

According to reports, the test train ran at a top speed of 453km / h in a single train and a maximum speed of 891km / h in two-way relative rendezvous on June 28 on the Meizhou Bay Bridge on the Fuzhou-Xiamen high-speed railway; on June 29th, it ran at a top speed of 420km / h in a single train and 840km / h in two-way relative rendezvous. The performance of various indicators of new technical components was good, which marked the phased achievements in the development of CR450 EMU.

CTOnews.com Note: the Fuxing train currently has three speed classes, which are CR400/300/200 respectively, and the corresponding maximum continuous operating speeds are 350km, 250km and 160km respectively. China's high-speed railway EMU currently operates at a top speed of 350km / h, maintained by Fuxing CR400AF and CR400BF.

Well, when many friends see this, they may wonder "how fast is this speed?" in the words of the official of the China Railway Group, "passengers sit in the car and pass by the rendezvous train in about 0.8 seconds."

Officials said that the "CR450 Science and Technology Innovation Project" is a major scientific research project identified in the country's 14th five-year Plan, including the development of new products of the Fuxing EMU and other high-speed rail scientific and technological innovation projects.

In that case, some people may ask, why is it necessary to conduct a high-speed train rendezvous test? Because the EMU often encounters the problem of vehicle meeting in the actual passenger operation, the instantaneous wind pressure outside the car can reach 5-10 KPA, which produces strong air attraction and leads to violent vibration of the train, which ultimately affects the ride comfort and even brings safety problems.

A person in charge of the Science, Technology and Information Department of China Railway Group said that the performance verification test was jointly carried out by the China Railway Research Academy Corporation, enterprises owned by China Railway Corporation, Beijing Jiaotong University, Southwest Jiaotong University and Central South University, and carried out 57 scientific research tests to verify the technical feasibility and performance stability of the new technical components of CR450 EMU.

It is reported that the above two trains are manufactured by CRRC Changchun Rail bus Co., Ltd., and CRRC Qingdao Sifang Locomotive and Rolling Stock Co., Ltd., respectively. The tentative model of the CRRC long passenger model is CR400BF-J. As a new technology verification platform for high-speed EMU, the two trains participate in the preliminary test of the development of the "CR450 Science and Technology Innovation Project" EMU.

Since the test was carried out, all the work has progressed smoothly, and the data characteristics of new technical components under different speed conditions and different working conditions such as bridges, tunnels and curves have been obtained. The performance verification test under the condition of higher speed shows that the application of the new technology has achieved a new improvement in the relevant indicators of EMU, and the important indicators such as safety, power, energy consumption, vibration, acceleration performance and braking stability of high-speed railway will continue to lead the world, which provides an important support for the development of CR450 EMU with higher speed, safer, more environmentally friendly, more energy-saving and more intelligent EMU, and for realizing high-level scientific and technological self-reliance of railway. It is of great significance to consolidate and expand the advantages of China's high-speed rail as the world leader.

It is worth mentioning that this speed is not the highest speed in China's high-speed EMU test. For example, the "Harmony" CRH380A EMU achieved a top speed of 486.1 km / h in the joint test and comprehensive test of the pilot section of the Beijing-Shanghai high-speed railway in December 2010, while the global record for wheel-rail train speed was held by the Alstom TGV super high-speed train (574.8 km) in France on April 3, 2007.

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