Integral (train)

The Integral is a diesel multiple unit (DMU) train type operated by Regiobahn GmbH on commuter services in North Rhine-Westphalia. Between 1998 and 2020, they were operated by the Bayerische Oberlandbahn on regional services between Munich, Bayrischzell, Lenggries and Tegernsee. They were built by the now defunct Jenbacher Werke.[1]

Integral
Integral set VT 104 at München Hauptbahnhof in November 2018
In serviceNovember 1998 – July 2020
December 2020 – present
ManufacturerJenbacher Werke
Number built17 sets
Formation5 sections per trainset
Operator(s)Bayerische Oberlandbahn
Regiobahn GmbH
Specifications
Prime mover(s)Diesel-hydraulic
Bogies6 single wheelsets
Track gauge1,435 mm (4 ft 8 1⁄2 in)

Formation
Interior view

Each Integral unit consists of five sections, formed as shown in table below.[2] The two "FGZ" sections are suspended between the end- and intermediate cars.[2]

CarEndwagen 2
end car 2		Fahrgastzelle
passenger section		Mittelwagen
intermediate car		Fahrgastzelle
passenger section		Endwagen 1
end car 1
Designation EW2FGZMWFGZEW1
Equipment Diesel-hydraulic motorTwo unpowered wheelsetsDiesel-hydraulic motor
Wheelsets 2none2none2

Technical specifications

The trains are powered by diesel-hydraulic motors.[2] One end car has all wheelsets powered, the other end car has only one powered wheelset. All six wheelsets use active radial steering.[2] The trains are able to run in multiple unit formation.[3]

History

The trains entered service in November 1998.[3] Following problems and malfunctions, the fleet was returned to its manufacturer in Jenbach, and was overhauled, which increased their reliability.[4]

One unit was used at the Test- and Validationcenter Wegberg-Wildenrath for testing of an anti-collision system by the Deutsches Zentrum für Luft- und Raumfahrt (DLR).[5]

The Integral trains were withdrawn by Bayerische Oberlandbahn after their last day of service on July 25, 2020, being replaced by LINT 54 units.[6]

After their withdrawal from service in Bavaria, Integral trains were transferred to the Regiobahn GmbH in North Rhine-Westphalia, where they entered service on VRR S-Bahn line S28 in December 2020.[7]

  • Anti-collision device experimentally fitted to an Integral unit
  • Regiobahn Integral on an S28 service to Wuppertal

References
  1. Bauer, Alexander (August 6, 2018). "Bayern: Herbst für die Integrale und Talente bei der Bayerischen Oberlandbahn" [Bavaria: Autumn for the Integral and Talent trains at the Bayerische Oberlandbahn]. lok-report.de (in German). LOK Report-Verlag. Archived from the original on August 21, 2019. Retrieved August 21, 2019.
  2. Janicki, Jürgen; Reinhard, Horst (2008). Schienenfahrzeugtechnik [Rail vehicle technology] (in German). Bahn Fachverlag. pp. 67, 68. ISBN 9783980800259.
  3. Höger, Andreas (March 30, 2018). "Vor 20 Jahren nahm die BOB Kurs auf" [20 years ago BOB started operating]. Münchner Merkur (in German). Archived from the original on August 21, 2019. Retrieved August 21, 2019.
  4. Seeger, Heino (August 2010). "Die Bayerische Oberlandbahn" [The Bayerische Oberlandbahn]. regionale-schienen.at (in German). Verein Regionale Schienen. Archived from the original on August 21, 2019. Retrieved August 21, 2019.
  5. "Wissenschaftler stellen Anti-Kollisionssystem für Züge vor" [Scientists present anti collision system for trains]. Aachener Nachrichten (in German). May 11, 2010. Archived from the original on August 21, 2019. Retrieved August 21, 2019.
  6. "Transdev/BOB: Alle Talent- und Integral-Triebwagen durch Lint 54 ersetzt" [Transdev/BOB: All Talent and Integral multiple units replaced by Lint 54]. eurailpress.de (in German). DVV Media Group. July 29, 2020. Archived from the original on July 29, 2020. Retrieved August 1, 2020.
  7. "Mettmann – Wuppertal: Regiobahn eröffnet neue Strecke mit Integral-Zügen" [Mettmann – Wuppertal: Regiobahn opens new line with Integral trains]. eurailpress.de (in German). DVV Media Group GmbH. December 15, 2020. Archived from the original on December 30, 2020. Retrieved December 30, 2020.
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