China Railway CR450AF
| China Railway CR450AF | |
|---|---|
 | |
 | |
| Stock type | Electric multiple unit (EMU) |
| Manufacturer | CRRC Qingdao Sifang Co., Ltd. |
| Designer | Exterior: Jörn Lutter |
| Family name | China standardized EMU |
| Constructed | 2023- |
| Number built | 1 |
| Number in service | 0 |
| Formation | 4M4T |
| Fleet numbers | CR450AF-0201 |
| Capacity | 552 |
| Operators |  China RailwayChina Academy of Railway Sciences |
| Specifications | |
| Train length | 211 metres (692 ft) |
| Car length | 28.55m (End car) 25m (Middle car) |
| Width | 3.36 metres (11.0 ft) |
| Maximum speed |
|
| Axle load | 14.5 tonnes (32,000 lb) |
| Electric system(s) | 25kV 50Hz AC |
| Current collector(s) | Pantograph |
| UIC classification | (2’2’)(Bo’Bo’)(2’2’)(Bo’Bo’)(Bo’Bo’)(2’2’)(Bo’Bo’)(2’2’) |
| Safety system(s) | CTCS-400T, Vigilance |
| Coupling system | Scharfenberg |
| Headlight type | Light Emitting Diode |
| Seating | Longitudinal |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) |
The CR450AF Fuxing (Chinese: 复兴号; pinyin: Fùxīng Hào) is a prototype Chinese electric high-speed train manufactured by CRRC Qingdao Sifang. As part of the China Standardized EMU, the CR450AF has an operating speed of 400 km/h (250 mph) and a maximum design speed of 450km/h. Once in service, it will have one of two trains that have the highest operating speed in the world.[1]
History
[edit]2020
[edit]Drafted between 26 and 29 October on the fifth plenum of the 19th Central Committee of the CCP, the project was announced as part of China's 14th five-year plan, known as "Research and development plans for speedier bullet train".[2]
2023
[edit]
On June 28, test runs were conducted on the Fuzhou-Xiamen high-speed railway using two trainsets: CR400AF-J-0002 comprehensive inspection train (CIT) containing a CR450AF intermediate car, and CR400BF-J-0001 comprehensive inspection train (CIT) containing a CR450BF intermediate car. During these tests, a speed of 453 km/h (281 mph) was reached, and a relative speed of 891 km/h (554 mph) was reached, setting a new world record for the relative speed between two conventionally wheeled trains.[1]
On June 29, test runs through the Haiwei tunnel were conducted. During these tests, a speed of 420 km/h (260 mph) was reached, and a relative passing speed of 840 km/h (520 mph) was recorded.[2]
2024
[edit]
On December 29, after 3 years of the development, CRRC held a press conference at the China Academy of Railway Sciences (CARS) site in Northeast Beijing, China, where it officially announced the two prototypes of CR450 family: the CR450AF-0201 and CR450BF-0501.[3]
2025
[edit]The CR450AF is expected to roll out a production version and deliver to China Railway in 2025, thereafter enter regular service on existing high-speed lines which limits the operating speed to 350km/h due to line limitations.
Future
[edit]In 2027 it will be deployed on the 292km long Second Chengdu-Chongqing high-speed railway which is expected to be finished by then, where it can reach its designed highest operating speed 400km/h and shorten the travel time between the two cities to less than 50 minutes.[2]
Design
[edit]According to CRRC, the CR450AF is 10% lighter,[4] has 22% lower drag,[4] consumes 20% less energy and has 20% better braking performance compared to the CR400AF.
Frame
[edit]The CR450AF in its standard configuration contains 8 carriages, all of them are made with light-weight materials like aluminum, carbon fiber and glass fiber. 4 of them (car 2/4/5/7) are power-cars and the other 4 (car 1/3/6/8) are trailers[5].
Each middle car has two pairs of door at the end of the carriage, except the dining car, which only has one pair, the two lead cars on both of its ends also have two pair of doors fitted but one of them serves as the exclusive access to the driver's cab.[5]
Two sets of pantographs are installed on unpowered trailer car 3 and 6 for collecting current from the overhead catenaries.[5]
The height of the each carriage are reduced on CR450AF compared to its predecessors, therefore reduced drags by reducing the body cross section area.[5]
Electrical systems
[edit]The CR450AF is claimed by its manufacturer CRRC of having a higher traction force by using permanent-magnet synchronous motor (PMSM), it also enables a more than 3% higher of energy conversion efficiency.[5]
The train uses pantograph to gain 25kV 50Hz AC from the overhead catenary, which is the only type of energy source used on the China Railway network all across China.
It also has a storage battery system which can provide the train with a 110V DC power source.[5]
Mechanical systems
[edit]The CR450AF prototype has redesigned integrated bogies which claims to be 20% lighter than previous generations of traditional externally mounted ones seen on other Chinese high-speed EMUs[6], also unlike other production models, they are hidden under the side skirt of the frame with a enclosure design for better aerodynamic performance and therefore reduce drag for a better energy efficiency, similar to those seen on the Japanese Shinkansen, or the end-car of German ICE 4.
Interior
[edit]There are four classes of seating on board the CR450AF: Second Class, First Class, Premium First class and Business Class.[7]
Second Class has 482 seats in a 2-3 layout, similar to other Chinese EMUs and carriages.[8]
First Class has 28 seats in a 2-2 layout. Compared with second class, the seats are made of leather and offer improved comfort with more width and legroom.[8]
Premium first class has 24 seats in a 2-2 layout, and debuted in 2023 on previous CR400 trainsets. Compared with first class, it offers greater legroom and features a footrest.[5]
The business class cabin has undergone various redesigns, consisting of three different types of seating configurations: a 6-seat classic business class setup, a business suite that accommodates six individuals, and a multi-purpose suite that offers more privacy.[8]
Variants
[edit]CR450AF (Prototype)
[edit]The first trainset to be built, the CR450AF-0201, was first rolled out on November 26, 2024. It is designed for testing and qualification purposes.[9]
| No | Model | Type | UIC number | Class | Capacity | Length |
|---|---|---|---|---|---|---|
| 1 | ZYS | Trailer car | ZYS01xxxx | Business / 1+ | 30 | 28550mm |
| 2 | ZES | Power car | ZES02xxxx | 2 | 85 | 25650mm |
| 3 | ZE | Trailer car (with pantograph) | ZE03xxxx | 2 | 90 | 25650mm |
| 4 | ZE | Power car | ZE04xxxx | 2 | 80 | 25650mm |
| 5 | ZEC | Power car | ZEC05xxxx | 2 / Dining | 63 | 25650mm |
| 6 | ZE | Trailer car (with pantograph) | ZE06xxxx | 2 | 90 | 25650mm |
| 7 | ZES | Power car | ZES07xxxx | 2 | 80 | 25650mm |
| 8 | ZYS | Trailer car | ZYS08xxxx | Business / 1 | 34 | 28550mm |
See also
[edit]References
[edit]- ^ a b Paleja, Ameya. "At 281 miles an hour, China's new high-speed maglev train is the world's fastest". Interesting Engineering. Retrieved 2024-12-30.
- ^ a b c Tiwari, Sakshi (2023-07-03). "At 453 KM/H, China Tests World's Fastest, New-Gen High-Speed Train That Is Safer, Energy-Efficient & Intelligent". EURASIAN TIMES. Retrieved 2024-12-31.
- ^ "FOCUS | China debuts prototype of fastest high-speed train in the world". english.news.cn. Retrieved 2024-12-29.
- ^ a b "全球最快高铁列车来了！CR450动车组样车发布". www.guancha.cn. Retrieved 2024-12-29.
- ^ a b c d e f g "CR450AF(样车)动车组 - 动车组列车 - 记录高速动车组列车及城市轨道交通列车发展历程 —— 慧伊创新科技（北京）有限公司". www.china-emu.cn. Retrieved 2024-12-29.
- ^ BATRAK, OLEKSANDR (2024-07-30). "CRRC Develops Innovative Bogie for High-Speed Trains". Railway Supply. Retrieved 2025-01-01.
- ^ "China debuts prototype of fastest high-speed train in the world". english.www.gov.cn. Retrieved 2024-12-29.
- ^ a b c sina_mobile (2024-12-29). "运营时速 400 公里全球最快，我国 CR450 动车组样车内饰、坐席等设计公布". finance.sina.cn. Retrieved 2024-12-29.
- ^ "CR450AF departing factory". 2024-11-26.
