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MVG Class B

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MVG Class B
MVG Class B train at Freimann station
In service1981–Present
ManufacturerMAN, MBB
Constructed1981–1995
Scrapped2006–
Number built126 vehicles (63 sets)
Number preserved1
Number scrapped10 vehicles (5 sets)
Formation2 cars per trainset
Fleet numbers494-499, 501-535, 551-572
Capacity290 (98 seated, 192 standing)
OperatorsMVG
Specifications
Car body constructionAluminium
Train length37,550 mm (123 ft 2 in)
Car length18,775 mm (61 ft 7.2 in)
Width2,900 mm (9 ft 6 in)
Height3,550 mm (11 ft 8 in)
Doors6 pairs per car, 3 pairs per side
Maximum speed80 km/h (50 mph)*
Weight57,1 t
Traction systemThree-phase
Power output872 kW
TransmissionDouble-joint cardan drive
Auxiliaries110V Vehicle battery
Electric system(s)750V DC, 3rd rail
Braking system(s)Electric brake, pneumatic brake, spring accumulator brake
Safety system(s)LZB
Coupling systemScharfenberg 40-3507
Track gauge1,435 mm (4 ft 8+1⁄2 in)

The MVG Class B is an electric multiple unit (EMU) train type opreated by the Münchner Verkehrsgesellschaft on the Munich U-Bahn system. The prototypes were delivered in 1981, and the full-production units entered service from 1987.[1] A Class B derivative, the VAG Class DT2, is in service on the Nuremberg U-Bahn system.[2]

History

Due to planned network expansions in the 1980s and the resulting higher demand of rolling stock, MVG decided to purchase a successor of the Class A, since the technology used in these trains was outdated by 1980. Six prototype units (12 cars), built by Messerschmitt-Bölkow-Blohm (MBB), were delivered in 1981. Because of difficulties, MVG ordered additional Class A trains in 1982. The first full-production Class B trains, built by MAN and MBB, were delivered in 1987. A total of 63 twin-units have been built between 1981 and 1995[1], of which five have been withdrawn and scrapped.[2]

Operations

The Class B is used on all lines of the Munich U-Bahn.

Formation

Every Class B train consists of two permanently-coupled cars, forming a twin-unit. The car at the northern end is numbered 6xxx, while the car at the southern end is numbered 7xxx. The trains are equipped with automatic Scharfenberg couplers[2], enabling operation of up to three units together to form a three-unit train (Langzug).

The Class B was delivered in three batches:[2]

  • B1.4: prototype units, fleet numbers 494-499, delivered from 1981
  • B2.7: full production units, fleet numbers 501-535, delivered from 1987
  • B2.8: full production units, fleet numbers 551-572, delivered from 1994

The B2.8 series differs from the earlier series, as they have flip-dot display destination signs instead of split-flap display signs on the B1.4 and B2.7 series.[2]

Interior

The interior of the Class B is largely similar to the interior of the MVG Class A. One of the visible differences are the brown-colored seat covers, instead of blue-colored seat covers of the Class A interior.[2]

Technical Specifications

As with the Class A, the car bodies are made out of aluminium, and the doors and windows also are arranged similar to those of the Class A.[2] The biggest visual difference between Class A and Class B trains is the different front end design. The Class B has one large front window, while the Class A has three smaller front windows.[2] The Class B trains are powered by three-phase motors. One twin-unit has four powered bogies with a power output of 218 kW, bringing the total power output to 872 kW.[1]

Syntegra

In 2006, Siemens bought one of the prototype units (Unit 498) and refitted the soutern-end car (7498) with Syntegra-bogies to create a demonstration vehicle. Car 6498 is fitted with standard B-Class bogies and serves as reference in order to compare the "Syntegra" design to the current bogie design. The Unit has been tested at the Test- and Validationcenter Wegberg-Wildenrath in North Rhine-Westphalia, and entered revenue service in 2008.[2] When in service, this unit forms the middle unit in a three-unit train (Langzug).[3]

Preserved examples

  • Unit 497: Preserved at the MVG-Museum in Munich (car 7497, renumbered to 6497, cab section only)[2]
  • Cab section of car 7497 (renumbered to 6497) at the MVG-Museum
    Cab section of car 7497 (renumbered to 6497) at the MVG-Museum
  • Interior of a Class B train
    Interior of a Class B train
  • Unit 498 with Syntegra advertisement
    Unit 498 with Syntegra advertisement
  • Syntegra bogie of car 7498
    Syntegra bogie of car 7498

References

  1. ^ a b c https://www.mvg.de/ueber/das-unternehmen/fahrzeuge.html MVG fleet information (in German)
  2. ^ a b c d e f g h i j Wolfgang Pischek, Holger Junghardt: Die Münchner U-Bahn - unterirdisch durch die bayerische Landeshauptstadt. München 2012 (3. Aufl.), ISBN 3-7654-7194-1 (in German) p. 53-59.
  3. ^ http://www.siemens.com/press/de/pressemitteilungen/?press=/de/pressemitteilungen/2008/mobility/imo200808042.htm&content Siemens press release (in German)
Wikimedia Commons has media related to MVG Class B.

MVG fleet information (in German)

MVG Class B

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