Here comes! The fastest high-speed rail in the world.

On December 29, the CR450 188bet online live casino prototype was officially released in Beijing. The 188bet online live casino test speed can reach 450 km/h and the operating speed can reach 400 km/h.

What high technology does the CR450 EMU contain? What new experience will it bring? High-speed rail technology leads the world, how can 188bet online live casino do it?

The speed is increased, but the braking distance, energy consumption, and noise remain unchanged

The speed is 50 kilometers per hour, what does the CR450 188bet online live casino rely on?

Strengthier—

As we all know, high-speed rail runs fast, relying on converting electrical energy into mechanical energy. In order to improve the efficiency of energy conversion, the CR450 188bet online live casino uses a permanent magnet traction motor, which has an efficiency of more than 3% higher than the asynchronous traction motor of the CR400 188bet online live casino.

Larger resistance—

For high-speed trains, the aerodynamic resistance increases with the square of their speed, and the speed increases to 400 kilometers per hour, and the resistance will increase by 30%. It can be said that most of the energy generated by the traction motor is consumed in "confrontation" with the air. Through optimized design, the CR450 188bet online live casino has achieved a 22% reduction in the operational resistance of the entire vehicle.

Lighter weight—

When driving at high-speed rail, it is very important to go into battle with light. Using new materials such as carbon fiber composite materials and magnesium alloys, and applying topology optimization technology, the CR450 188bet online live casino reduces weight by more than 10% compared with the previous ones.

Effective performance—

For 188bet online live casino trains, they have to stop if they run fast. From a speed of 400 kilometers per hour to a speed of 0, the CR450 188bet online live casino only needs 6,500 meters. This number is consistent with the braking distance of the CR400 188bet online live casino, which improves the operation speed and the braking distance remains unchanged.

It is precisely with these excellent performances that the CR450 188bet online live casino can increase the speed by 50 kilometers per hour and the energy consumption remains unchanged. The 8-marshalled CR450 188bet online live casino train consumes only 22 to 23 kWh of electricity per kilometer under a speed of 400 kilometers per hour, ensuring its economical and green nature of commercial operations.

The CR450 188bet online live casino also has many eye-catching designs:

Smarter. The CR450 188bet online live casino is equipped with an intelligent monitoring and intelligent diagnosis system. More than 4,000 monitoring points in the entire lineup collect data on shaft temperature, pressure and other data in real time, so as to achieve self-perception, self-diagnosis, and self-decision.

Not only that, the CR450 EMU innovatively uses a time-sensitive network to transmit signals, and the real-time transmission performance is improved by 10 times. "The use of time-sensitive networks makes the information interaction between various systems of EMU trains more timely and have higher control accuracy." said Zhao Hongwei, chief researcher of the 188bet online live casino Academy Group Corporation.

More silent. Noise is directly related to ride comfort. Theoretical calculations show that increasing the speed by 50 kilometers per hour usually brings noise increments of 2 to 3 decibels to the train. However, the CR450 188bet online live casino has achieved a reduction of 2 decibels in the passenger room noise, and the overall noise level is equivalent to the operating speed of the existing 188bet online live casino at 350 kilometers per hour.

More comfortable. After careful observation of the CR450 188bet online live casino, in order to "slim down", its height dropped from 4.05 meters to 3.85 meters, but when it entered the interior of the car, the height of the living room remained unchanged. Through integrated and miniaturized design, the passenger area of ​​CR450 188bet online live casino has increased by 4%, and the storage area of ​​large luggage has doubled.

More variety. Lighting can automatically adjust brightness with the outdoor environment; contactless bathrooms can "air buttons"; new choices such as family private rooms and multi-functional rooms are added... "We are committed to providing passengers with diversified, convenient and personalized services to make the ride experience better." Ren Guangqiang, deputy director of the Technical Department of the Automobile and Vehicle Department of the 188bet online live casino Group, said.

The standard system for 188bet online live casino trains operating at a speed of 400 kilometers per hour is established for the first time

The development of the CR450 188bet online live casino train is a real exploration of "no man's land".

——This tests the ability of original innovation.

What should the CR450 188bet online live casino train look like? How should technical indicators be determined? What level should each key component reach? How to ensure safety?

In 2018, the 188bet online live casino Group launched the basic theory and key technologies of high-speed rail with operating speeds of 400 kilometers per hour; officially started research and development in 2021; in 2022, the overall technical conditions were released, a large number of simulation calculations and ground bench tests were carried out, technical conditions and parameter tests were carried out on the Zhengwan and Jizheng high-speed railways, and new technical components replacement tests were carried out on the Mimeng and Fuxia high-speed railways; in 2024, the production of prototype vehicles was officially launched...

"In this process, we established and improved the research and development mechanism that combines experimental exploration with iterative research and development." Li Yongheng, Director of the Equipment Technology Department of the Ministry of Science and Technology and Information Technology of 188bet online live casino Group, introduced that a large amount of data has been accumulated for the line test of more than 200,000 kilometers, and more than 1,000 simulation calculations and more than 1,000 ground bench tests, jointly supported the completion of the CR450 EMU design plan.

——This tests the exploration of boundary limits.

"For the first time in the world, the CR450 188bet online live casino project has determined boundary conditions and verified top-level indicators through actual line tests, and formulated the technical conditions of the project based on demand." Zhang Bo, director of the Institute of Iron and Vehicles of the Academy of Railway Sciences Group, introduced.

The R&D team has completed more than 100 tests, explored the changes in parameters related to train speed improvement, and obtained data characteristics in different speed conditions and different working conditions such as bridges, tunnels, curves, etc., laying a solid foundation for the development of CR450 188bet online live casino.

——This tests the collaborative ability of multiple disciplines and fields.

In the development of the CR450 188bet online live casino, there are many constraints between the technical indicators, such as running fast and stopping. Due to multiple technical indicators, the determination of every detailed plan must be selected from the best.

Take weight loss as an example, the speed is faster, and the "muscles" of the 188bet online live casino must be stronger to ensure safety. But in order to reduce energy consumption and reduce braking distance, the 188bet online live casino must try to lose weight?

What should I do? Strengthen the load-bearing part; reduce the weight when the load-bearing part is not. "In order to reduce weight, all components must be weighed from cables to large bodies and bogies before they can be assembled according to standards," said Tao Guidong, deputy chief engineer of CRRC Sifang.

The traction system reduces weight by 15% on the basis of ensuring power improvement; the brake system reduces weight by 10% on the basis of meeting higher braking requirements; the vehicle body reduces weight by 10%... In the end, the CR450 achieved the goal of 10% overall weight reduction and "slimming" 50 tons.

The first use of bogie covering structure, the first use of time-sensitive network, and the first use of permanent magnet traction motor... Through the development of the CR450 188bet online live casino sample vehicle, China has established a standard system for commercial operation of EMUs for the first time worldwide.

Spanning industry, academia and research, deep integration and collaborative innovation

A high-speed 188bet online live casino train with more than 40,000 parts.

"CR450 188bet online live casino is a comprehensive demonstration of my country's scientific and technological innovation and high-end equipment manufacturing strength." Li Yongheng said.

This is the best reflection of the strong advantages of the new national system.

The R&D team of the CR450 188bet online live casino is an innovative consortium spanning industry, academia and research.

Led by 188bet online live casino Group, many companies such as CRRC and China Communications Technology Co., Ltd., research institutions such as the Academy of Railway Sciences and the Chinese Academy of Sciences, and universities such as Beijing Jiaotong University, Central South University, and Tongji University. Various institutions are deeply integrated and collaboratively innovated.

Take the development of noise reduction as an example. Sui Fusheng, a researcher at the Institute of Acoustics of the Chinese Academy of Sciences, analyzed that noise includes both aerodynamic noise and wheel and rail vibration noise. The wide frequency range, the increase in speed and lightweight design bring great challenges to noise control.

Different noises require different solutions. CRRC Sifang and Shipbuilding Research Institute solve the problem of low-frequency vibration and noise; CRRC Changke and Southwest Jiaotong University jointly conducted more than 10 tests in the vehicle-level acoustic laboratory...

In the end, it took one and a half years to conduct noise tests on new materials and new structures, and tested more than 300 noise reduction solutions. The R&D team reduced the indoor noise reduction solutions of CR450 188bet online live casino by 2 decibels.

This is the best example of the advantages of complete supply of industrial systems.

A 188bet online live casino train, from R&D, manufacturing to operation and maintenance services, has more than 100 major enterprises that design and produce 188bet online live casino parts and more than 2,100 participating enterprises. "Just as the traction system alone, nearly 40 supporting enterprises participate in the research and development, involving enterprises in all links of the industrial chain such as materials, manufacturing, and testing." Feng Jianghua, chief scientist of CRRC, said.

Weight reduction, new materials such as carbon fiber composite materials and magnesium alloys are used; noise reduction, new materials and new structures such as floor shock absorbers, acoustic metamaterial resonance units, acoustic superstructure sound absorption walls, high-damping interior panels are used; traction motors use high-level domestic insulation materials...

This is the best proof of having the advantages of a large number of high-quality workers.

In the process of R&D, a large number of scientific researchers are determined to innovate and overcome one difficulty after another.

The whole body reduces obstacles and taps deeper potential. Where can best reduce air resistance? Through a large number of simulations and experiments, R&D personnel analyze the air resistance experienced by different parts of the vehicle and explore the theoretical limits for drag reduction in each part.

"In the end, we found that the bogie area still has great potential for drag reduction." Zhu Yan, deputy chief engineer of CRRC Changke, introduced that the bogie is the leg of the 188bet online live casino train, which undertakes tasks such as load-bearing, traction, braking, vibration reduction. How to do drag reduction?

After countless day and night simulation tests, R&D personnel finally gradually grasped the operating rules of the complex flow field in the bogie area and innovatively proposed the covering structure. "The cladding structure is equivalent to putting 'pants' on the bogie. It not only needs to consider the drag reduction effect, but also takes into account multiple goals such as heat dissipation, strength and stiffness. It is a great challenge in design." Wang Wenjing, professor at Beijing Jiaotong University, introduced.

In the manufacturing process, craftsmen from great countries strive for excellence and build dreams with craftsmanship.

"The body of the CR450 sample car uses lighter, thin-walled aluminum alloy profiles, which has a lighter body and higher strength requirements, posing a great challenge to the welding manufacturing of the car body." Han Xiaohui, chief craftsman of CRRC Sifang, said that for this reason, the production line has introduced laser arc composite welding technology for the first time, which has increased the connection strength of the car body by 20% and increased the flatness by 3 to 5 times.

A relevant person in charge of 188bet online live casino Corporation introduced that the next step will be arranged to carry out a series of line tests and assessments for the CR450 EMU prototype to further test various performance indicators and strive to enter commercial operations as soon as possible.