China's first localized 300km "harmony" EMU train was completed on the morning of December 22, 2007 at CSR Sifang Locomotive Co., Ltd. Its successful downline marks that the technical level of China's railway passenger transport equipment has reached the world's advanced level, and China has become the fourth country in the world to independently develop a 300-kilometer EMU at the speed of Japan, France and Germany.
Wang Yongping, spokesperson of the Ministry of Railways, said: "The 300km/h 'Harmony' EMU is the world's fastest-running EMU based on the introduction and digestion of a 200km/h EMU technology platform. One of the trains has a localization rate of over 70%."
Compared with the 200km/h EMU, the 300km/h EMU has more power, and the train's air tightness, smooth running, aerodynamic performance and other requirements are higher, and the technical difficulty is more complicated.
Zhang Shuguang, deputy chief engineer of the Ministry of Railways, said: "CSR Sifang Co., Ltd., as China's high-speed railway industrialized manufacturing base, aims at the world's high-speed EMU advanced technology and continuously enhances its independent innovation capability. At present, it has comprehensively and systematically mastered the EMU assembly and car body. Key technologies such as bogies have successfully built a world-class 300 km/h EMU technology platform. This means that China's railway passenger equipment manufacturing has entered the forefront of world high-speed technology."
"From a speed of 160 kilometers per hour to a speed of 200 to 250 kilometers per hour, and a huge leap of 300 kilometers per hour, CSR Group ranks among the world's high-speed train design and manufacturing companies, and it took less than four years." China South Locomotive Group Corporation General Manager Zhao Xiaogang said.
The new down-speed 300-kilometer EMU adopts a streamlined aerodynamic shape, which looks like the current 200-kilometer EMU that has been running in China. The whole train is connected by 8 vehicles, all of which are seat cars, of which the No. 7 car is a first-class car. . The reporter saw that the car was significantly different from the 200km/h EMU. The new car added two small bars to the dining car of the No.5 car. In the No.7 car, the double-sided visible LCD screen was added to facilitate passengers. Leisure on the train.
Ma Yunshuang, deputy director of the Technical Center of CSR Sifang Co., Ltd. said: "It is particularly worth mentioning that the train uses a large-section hollow profile aluminum alloy body. The thinnest part of the aluminum alloy profile is only 1.5 mm. The weight of each car body is about 7 tons, it is the lightest EMU of its kind in the world, with superior energy and environmental performance."
Ma Yunshuang also said that the new car is equipped with a "shop shock absorber" between each car, which can reduce the longitudinal impulse between the trains and the swing of the car itself. In addition, the new car is equipped with semi-active suspension system, emergency ventilation system and other devices, which will further improve the stability and comfort of the EMU at high speed, and provide passengers with a more comfortable travel life.
It is reported that after China's first domestically produced 300km "Harmony" EMU train is completed, CSR Sifang Co., Ltd. will quickly transfer to mass production. It is expected that the first batch of 10 EMUs will be delivered in March 2008. Wang Yongping, spokesperson for the Ministry of Railways, said: "After a series of tests, the 300km/h EMU will be officially put into operation on the Beijing-Tianjin inter-city railway on August 1, 2008."
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