Physics:L0 Series

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Short description: Japanese maglev train type
L0 Series
L0-950.jpg
A test run of the Improved L0 Series, August 2020
ManufacturerMitsubishi Heavy Industries, Nippon Sharyo, Hitachi Rail
Constructed2011–
Entered service2011
2020 (improved)
2027 (passenger service)
Number built14 vehicles
Number in service12 vehicles (1 set)
FormationTest: 5–12 cars
Operation: 16 cars
CapacityEnd cars: 24
Intermediate cars: 68
Operator(s)JR Central
Line(s) servedCurrent: Yamanashi test track
Future: Chūō Shinkansen
Specifications
Train length299 m (12-car formation)
Car length28 m (92 ft) (end cars)
24.3 m (80 ft) (intermediate cars)
Width2.9 m (9.5 ft)[1]
Height3.1 m (10 ft)[1]
Doors2 × 1 per car
Maximum speedDesign: 550 km/h (340 mph)
Record: 603 km/h (375 mph)
Operational: 500 km/h (310 mph)
Power supplyL0 series: gas turbine-electric[2]
Improved L0 series: unknown
Electric system(s)33 kV AC
Current collection methodL0 series: none
Improved L0 series: induction (wireless power transfer)
Track gaugeSCMaglev guideway

The L0 Series (Japanese: L0（エルゼロ）系, Hepburn: Eru-zero-kei, "L zero series")[3] is a high-speed maglev train that the Central Japan Railway Company (JR Central) is developing and testing. JR Central plans to use the L0 series on the Chūō Shinkansen railway line between Tokyo and Osaka , which is under construction.

The L0 series uses the Japanese-designed SCMaglev system. Mitsubishi Heavy Industries and Nippon Sharyo, a subsidiary of JR Central, are building fourteen pre-production vehicles.[4]

A seven-car train set a land speed record for rail vehicles of 603 km/h (375 mph) on 21 April 2015.[5] The trains are planned to run at a maximum speed of 500 km/h (310 mph),[6] offering journey times of 40 minutes between Tokyo (Shinagawa Station) and Nagoya, and 1 hour 7 minutes between Tokyo and Osaka.[7]

Specifications

The end cars of L0 series trainsets are 28 meters (92 ft) long and carry 24 passengers. The nose extends 15 meters (49 ft) for better aerodynamics and reduced noise in tunnels.[7][8][9] Intermediate cars are 24.3 meters (80 ft) long and carry 68 passengers each, which totals a 299 m long and 728 passengers train. Each row is four seats wide, one less than JR Central shinkansen trains. The cars are more box-shaped than earlier models to allow for more interior space.[10] Cars are painted white and blue. During normal operation, the train is expected to operate at a maximum speed of 500 km/h (310 mph).[6]

The train does not require a driver, but does have a camera at the front of both end cars in order to allow for remote operation, in case the automated systems fail. The camera is more apparent on the revised end cars, introduced in 2020. It is moved to a higher position, and increased in size.[2]

The superconducting magnets in the bogies are built by Toshiba and Mitsubishi Electric. The cars are built by Nippon Sharyo, with Mitsubishi Heavy Industries also having built some in the past. Mitsubishi Heavy Industries stopped producing cars in 2017 after car manufacturing cost disagreements with JR central and the Mitsubishi SpaceJet's spiralling development costs.[11] The bogies are arranged in a Jacobs bogie configuration.

Planned operations

Chuo Shinkansen

Construction on the Chuo Shinkansen line on which the train is intended to run began in December 2014. The first section to Nagoya is expected to be completed in 2027. That section will be approximately 85% tunnels with an estimated cost of ¥5.5 trillion (US$46.5 billion). The relatively high cost is in large part due to the many tunnels.[12][13]

The complete line to Osaka is estimated to cost ¥9 trillion ($74.7 billion), and was expected to be completed by 2045, after an eight-year pause in construction to recuperate costs. However, after receiving a ¥3 trillion ($28 billion) loan from the Japanese government, JR Central moved the project forward. It now expects to be able to open the full line as early as 2037, with construction beginning immediately after completion of the Tokyo–Nagoya section.[14]

Northeast Maglev

A route from Washington, D.C. to Baltimore, eventually extending all the way to New York City has received political support in the United States. JR Central chairman Yoshiyuki Kasai spoke with U.S. President Barack Obama about the L0 series during Prime Minister Shinzo Abe's 28 April 2015 visit.

In August 2017, development partner Mitsubishi announced that talks had "stalled" because of "a lack of clarity on the Trump administration's stance on high-speed rail".[15][16]

In March 2019, Northeast Maglev project director David Henley stated in an interview that they expect to have a Record of Decision for the D.C.–Baltimore section by August 2020, and to begin construction later that same year, or in early 2021. According to Henley, this would allow operations to begin in 2027–28, allowing for a construction period of 7 years.[17]

History

The first L0 series undergoing test-running in August 2014

L0 series

The first L0 series vehicle was delivered to the Yamanashi Maglev Test Line and unveiled to the press in November 2012.[18] The first five vehicles were linked up and placed on the guideway in June 2013.[10]

The first five-car train began test-running at the 42.8 km (26.6 mi) Yamanashi Maglev Test Line in June 2013, following completion of extension and upgrade work at the facility, earlier than the originally scheduled September date.[19] The maximum speed of test runs was gradually increased, reaching 500 km/h by the end of July 2013.[19]

The five-car train was lengthened to seven cars in September 2013, and test-running as a 12-car formation commenced on 25 June 2014.[20] The train was reverted to a 7-car formation later in 2014,[20] and used for public preview rides starting in November.[21]

A series of endurance and speed tests was carried out on the 42.8 km (26.6 mi) test rail in April 2015 to examine the reliability and durability of the L0 after repeated high speed usage. Several speed and distance records were set in the process.[22]

After April 2015, the train returned to being used for public preview rides.

Improved L0 Series

Improved L0-series in Fuefuki, 29 August 2020

The L0 series are planned to be replaced with a revised model starting May 2020 (named the "Improved L0 series"). This will be the first L0 series to receive power from the guideway through induction. Currently, on-board power is provided by a small gas generator in each end car. The new end cars also feature a relocated and enlarged camera, and are more aerodynamic thanks to the removal of the exhaust vent necessary for the generator. Only one end car will be replaced by 2020, as well as one intermediate car. This means that the train will consist of a combination of revised and original cars for a period of time, and will be able to generate electricity with its onboard generator while testing the new induction system.[2]

The new cars were completed in March 2020. While presenting the new end car to the press, lead designer Motoaki Terai stated that this model represents the completion of around 80–90% of the design goals for the final train.[23]

Variants

L0 Series: 1 × 12-car set owned by JR Central, introduced in 2011 and planned to be converted to the Improved L0 series starting in June 2020.

Improved L0 Series: 1 × 12-car set planned to be gradually upgraded from L0 series starting June 2020. Two replacement cars have been completed as of April 2020.

Records

Speed records

  • 16 April 2015: Fastest manned train in the world (590 km/h (370 mph))
  • 21 April 2015: Fastest manned train in the world (603 km/h (375 mph))

On 16 April 2015, a manned seven-car L0 series trainset reached a speed of 590 km/h (370 mph), breaking the previous world record of 581 km/h (361 mph) set by a Japanese MLX01 maglev trainset in December 2003. The speed of 590 km/h was sustained for a period of 19 seconds.[24] This speed record was broken again on 21 April 2015, when a manned seven-car set recorded a top speed of 603 km/h (375 mph).[5] The train hit its top speed at 10:48 am, about 4 minutes into the run. With 49 JR Central employees on board, the train sustained the speed for 10.8 seconds, travelling 1.8 kilometers (1.1 mi) during that time.[5][15]

Distance records

  • 10 April 2015: Longest distance travelled in one day (3,904 km (2,426 mi)), breaking the previous record (2,876 km (1,787 mi)) set in 2003.
  • 14 April 2015: Longest distance travelled in one day (4,064 km (2,525 mi)).[12][25]

See also

References

  1. ↑ 1.0 1.1 "L0 design changes". JR Central. http://jr-central.co.jp/news/release/_pdf/000009381.pdf. 
  2. ↑ 2.0 2.1 2.2 "Error: no |title= specified when using {{Cite web}}" (in ja). https://trafficnews.jp/post/82437. 
  3. ↑ "Error: no |title= specified when using {{Cite web}}" (in ja). The Yamanashi Nichinichi Shimbun – Web Edition. Japan: The Yamanashi Nichinichi Shimbun. 20 March 2014. http://www.sannichi.co.jp/linear/news/2014/03/20/16.html. 
  4. ↑ "Error: no |title= specified when using {{Cite web}}" (in ja). Japan: Sankei Shimbun. 21 December 2010. http://headlines.yahoo.co.jp/hl?a=20101221-00000576-san-bus_all. 
  5. ↑ 5.0 5.1 5.2 "Japan's maglev train breaks world speed record with 600 km/h test run". The Guardian. United Kingdom: Guardian News and Media Limited. 21 April 2015. https://www.theguardian.com/world/2015/apr/21/japans-maglev-train-notches-up-new-world-speed-record-in-test-run. 
  6. ↑ 6.0 6.1 "Error: no |title= specified when using {{Cite web}}" (in ja). Bloomberg. Japan: Bloomberg LP. 29 August 2013. http://www.bloomberg.co.jp/news/123-MS4JM56K50Y001.html. 
  7. ↑ 7.0 7.1 "JR Tokai unveils a model for the new high-speed maglev train 'L0'". Daily Onigiri. DailyOnigiri.com. 4 November 2010. http://www.dailyonigiri.com/2010/11/jr-tokai-unveils-a-model-for-the-new-high-speed-maglev-train-l0/. 
  8. ↑ Iida, Masanobu; Kikuchi, Katsuhiro; Fukuda, Takashi (2006). "Analysis and Experiment of Compression Wave Generated by Train Entering Tunnel Entrance Hood". JSME International Journal Series B Fluids and Thermal Engineering 49 (3): 761–770. doi:10.1299/jsmeb.49.761. 
  9. ↑ "About the vehicle | SCMAGLEV | Central Japan Railway Company" (in en). JR Central. https://scmaglev.jr-central-global.com/about/design/. 
  10. ↑ 10.0 10.1 "Prototype of high-speed maglev train shown to public" . Asahi Shimbun, 3 June 2013.
  11. ↑ "Mitsubishi Heavy to back out of maglev train project". https://asia.nikkei.com/Business/Mitsubishi-Heavy-to-back-out-of-maglev-train-project. 
  12. ↑ 12.0 12.1 Keith Barrow (17 April 2015). "Japan breaks maglev speed record". International Railway Journal. http://www.railjournal.com/index.php/high-speed/japan-breaks-maglev-speed-record.html?channel=523. 
  13. ↑ Ichihara, Tomohiro (22 April 2015). "Japanese rail company eyes exports to cover maglev costs". Nikkei. http://asia.nikkei.com/Business/Companies/Japanese-rail-company-eyes-exports-to-cover-maglev-costs. 
  14. ↑ "Japan PM's maglev decision reflects political calculus over economics" (in en). Reuters. 21 July 2016. https://www.reuters.com/article/japan-economy-rail-idUSL4N1A5381. 
  15. ↑ 15.0 15.1 "Japanese rail company eyes exports to cover maglev costs". Nikkei. 22 April 2015. http://asia.nikkei.com/Business/Companies/Japanese-rail-company-eyes-exports-to-cover-maglev-costs. 
  16. ↑ "Mitsubishi Heavy to back out of maglev train project" (in en). Nikkei Asian Review. 10 August 2017. https://asia.nikkei.com/Business/Companies/Mitsubishi-Heavy-to-back-out-of-maglev-train-project. 
  17. ↑ American Rail Club (9 March 2019), Fastest Train Being Built in America! – NYC to DC in 60 Minutes, https://www.youtube.com/watch?v=_Svycn25Wjw&t=947, retrieved 14 March 2019 
  18. ↑ "Error: no |title= specified when using {{Cite web}}" (in ja). Sankei Biz. Japan: Sankei Digital Inc.. 22 November 2012. http://www.sankeibiz.jp/business/news/121122/bsd1211221022009-n1.htm. 
  19. ↑ 19.0 19.1 "Error: no |title= specified when using {{Cite web}}" (in ja). Chunichi Web. Japan: The Chunichi Shimbun. 24 July 2013. http://www.chunichi.co.jp/s/article/2013072490222753.html. 
  20. ↑ 20.0 20.1 "Error: no |title= specified when using {{Cite web}}" (in ja). The Yamanashi Nichinichi Shimbun – Web Edition. The Yamanashi Nichinichi Shimbun. 25 June 2014. http://www.sannichi.co.jp/local/news/2014/06/25/10.html. 
  21. ↑ "Lucky riders whoosh along at 500 km/h on maglev test run for the public". The Asahi Shimbun Asahi & Japan Watch. Japan: The Asahi Shimbun Company. 13 November 2014. http://ajw.asahi.com/article/behind_news/social_affairs/AJ201411130073. 
  22. ↑ "Japanese maglev testing tops 600 km/h". Railway Gazette. 21 April 2015. http://www.railwaygazette.com/news/high-speed/single-view/view/japanese-maglev-testing-tops-600-kmh.html. 
  23. ↑ "超電導リニアL0系 スマホ同様に電気を得る「誘導集電」全面対応の改良型試験車が登場" (in ja). 乗りものニュース. https://trafficnews.jp/post/94844/2. 
  24. ↑ "Error: no |title= specified when using {{Cite web}}" (in ja). Yomiuri Online. Japan: The Yomiuri Shimbunl. 16 April 2015. http://www.yomiuri.co.jp/national/20150416-OYT1T50132.html. 
  25. ↑ 「山梨リニア実験線 長距離走行試験」の結果等について [Results of distance trials at Yamanashi Maglev Test Track] (PDF) (Press release) (in 日本語). Japan: Central Japan Railway Company. 16 April 2015. Retrieved 17 April 2015.

External links




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