The Integral is a

diesel multiple unit A diesel multiple unit or DMU is a multiple-unit train powered by on-board diesel engines. A DMU requires no separate locomotive, as the engines are incorporated into one or more of the carriages. Diesel-powered single-unit railcars are also ...

(DMU) train type operated by

Regiobahn GmbH The Regiobahn is the operator of the S28 line of the Rhine-Ruhr S-Bahn between Kaarst, Düsseldorf, Mettmann and Wuppertal in the state of North Rhine-Westphalia, Germany. There are three companies involved in the Regiobahn operations: * ' ...

on commuter services in North Rhine-Westphalia. Between 1998 and 2020, they were operated by the

Bayerische Oberlandbahn The Bayerische Oberlandbahn GmbH (BOB) is a private railway company based in Holzkirchen, Germany, and owned by Transdev Germany (formerly known as ''Veolia Verkehr''). Since June 2020 its services are operated under the brand Bayerische Regiob ...

on regional services between

Munich Munich ( ; german: München ; bar, Minga ) is the capital and most populous city of the States of Germany, German state of Bavaria. With a population of 1,558,395 inhabitants as of 31 July 2020, it is the List of cities in Germany by popu ...

Bayrischzell Bayrischzell is a municipality in the district of Miesbach in Bavaria in Germany. Geography Bayrischzell is located in the Mangfallgebirge between Schliersee in the West and Oberaudorf in the East. It is located at the foot of Wendelstein moun ...

Lenggries Lenggries is a municipality and a town in Bavaria, Germany. It is the center of the Isarwinkel, the region along the Isar between Bad Tölz and Wallgau. The town has about 9,500 inhabitants. By area, it is the largest rural municipality ("Gemeinde" ...

and

Tegernsee Tegernsee is a town in the Miesbach district of Bavaria, Germany. It is located on the shore of Lake Tegernsee, which is 747 m (2,451 ft) above sea level. A spa town, it is surrounded by an alpine landscape of Upper Bavaria, and has an e ...

. They were built by the now defunct

Jenbacher Werke INNIO Jenbacher designs and manufactures gas engines and cogeneration modules in the Austrian town of Jenbach in Tyrol. It is part of the INNIO portfolio of products and is one of their gas engine technologies; the other being Waukesha Engines. J ...

Formation

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

Technical specifications

The trains are powered by

diesel-hydraulic A diesel locomotive is a type of railway locomotive in which the prime mover is a diesel engine. Several types of diesel locomotives have been developed, differing mainly in the means by which mechanical power is conveyed to the driving wheels ...

motors. One end car has all wheelsets powered, the other end car has only one powered wheelset. All six wheelsets use active radial steering. The trains are able to run in

multiple unit A multiple-unit train or simply multiple unit (MU) is a self-propelled train composed of one or more carriages joined together, which when coupled to another multiple unit can be controlled by a single driver, with multiple-unit train contr ...

formation.

History

The trains entered service in November 1998. Following problems and malfunctions, the fleet was returned to its manufacturer in

Jenbach Jenbach is a municipality in the district of Schwaz in the Austrian state of Tyrol (state), Tyrol. Etymology Many inhabitants of Jenbach believe that the name "Jenbach" is derived from "Jenseits des Baches", which means "Beyond the brook", how ...

, and was overhauled, which increased their reliability. One unit was used at the

Test- and Validationcenter Wegberg-Wildenrath The Wegberg-Wildenrath Test and Validation Centre (german: Prüf- und Validationscenter Wegberg-Wildenrath) is a railway test centre owned by Siemens near Wildenrath in North Rhine-Westphalia, Germany. History The centre is located on the site o ...

for testing of an anti-collision system by the

Deutsches Zentrum für Luft- und Raumfahrt The German Aerospace Center (german: Deutsches Zentrum für Luft- und Raumfahrt e.V., abbreviated DLR, literally ''German Center for Air- and Space-flight'') is the national center for aerospace, energy and transportation research of Germany ...

(DLR). The Integral trains were withdrawn by Bayerische Oberlandbahn after their last day of service on July 25, 2020, being replaced by LINT 54 units. After their withdrawal from service in

Bavaria Bavaria ( ; ), officially the Free State of Bavaria (german: Freistaat Bayern, link=no ), is a state in the south-east of Germany. With an area of , Bavaria is the largest German state by land area, comprising roughly a fifth of the total lan ...

, Integral trains were transferred to the Regiobahn GmbH in

North Rhine-Westphalia North Rhine-Westphalia (german: Nordrhein-Westfalen, ; li, Noordrien-Wesfale ; nds, Noordrhien-Westfalen; ksh, Noodrhing-Wäßßfaale), commonly shortened to NRW (), is a States of Germany, state (''Land'') in Western Germany. With more tha ...

, where they entered service on VRR S-Bahn line S28 in December 2020. File:RCAS_technology_is_designed_to_prevent_train_collisions_(7494313608)_(2).jpg, Anti-collision device experimentally fitted to an Integral unit File:Integral Train.jpg, Regiobahn Integral on an S28 service to Wuppertal

References

External links

The Integral - Bayerische Oberlandbahn official website (archived on March 31, 2012)
{{German DMUs Diesel multiple units of Germany Articulated passenger trains