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NSB Di 1 was a class of
The locomotive was initially used on the Bergen Line. The advanced designed, combined with lack of suitable competence among NSB's staff and lack of spare parts, resulted in the locomotive seeing little revenue use. After a few years it was taken out of service and did not re-enter use until 1947, when the diesel shortage had diminished. A contributing factor was also the poor workmanship caused by the wartime industry. The locomotive was transferred from Oslo to Bergen District on 20 December 1945 and was used on the Bergen Line. During 1952 the locomotive started being used on the Dovre Line, and it was official transferred to Trondheim District on 20 October.
The class was important for NSB to gain insights into operations and technical aspects of diesel operations. This resulted in NSB taking delivery of the Di 2 class from 1954.Aspenberg (1999): 204 The units remained the most powerful diesel locomotives used by NSB until the delivery of the Di 4 in the 1980s. On 4 October 1957 the engine returned to Oslo District, this time to be used on the Gjøvik Line, and to a less extent the Kongsvinger Line. The locomotive was retired on 24 July 1959, and sold to Brødrene London as scrap, and has thus not been preserved.
diesel-hydraulic locomotive
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 ...
s built by Krupp for the Norwegian State Railways (NSB). The locomotive had two MAN
A man is an adult male human. Prior to adulthood, a male human is referred to as a boy (a male child or adolescent). Like most other male mammals, a man's genome usually inherits an X chromosome from the mother and a Y chromo ...
diesel engine
The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is a so-ca ...
s, giving a combined power output of and allowing the vehicle to reach a maximum speed of . It had a 1'BB'1 wheel arrangement and a driver's cab at only one end.
Two units were ordered in 1937, but only one locomotive was delivered, in 1942. Numbered 601, it was the first diesel locomotive used by NSB. It first served on the Bergen Line
The Bergen Line or the Bergen Railway ( no, Bergensbanen or nn, Bergensbana), is a long scenic standard gauge railway line between Bergen and Hønefoss, Norway. The name is often applied for the entire route from Bergen via Drammen to Osl ...
, although the locomotive was plagued with technical faults causing it to be out of service for shorter and longer periods. The locomotive was moved to the Dovre Line
The Dovre Line ( no, Dovrebanen) is a Norwegian railway line with three slightly different lines which all lead to the historic city of Trondheim.
Definition
*Dovre Line is the current name of the 548 km main line of the Norwegian railway s ...
from 1952 and finally to the Gjøvik Line
The Gjøvik Line ( no, Gjøvikbanen) is a Norwegian railway line between Oslo and Gjøvik. It was originally named the North Line (''Nordbanen'') and ran between Grefsen and Røykenvik. The line was completed to Gjøvik in 1902. The Gjøvik ...
and Kongsvinger Line
The Kongsvinger Line ( no, Kongsvingerbanen) is a railway line between the towns of Lillestrøm and Kongsvinger in Norway and onwards to Charlottenberg in Sweden. The railway was opened on 3 October 1862 and is Norway's second standard gauge lin ...
from 1957. The locomotive was retired and scrapped in 1959.
History
The Di 1 was the first class of diesel locomotives ordered by the Norwegian State Railways. Krupp had developed the diesel-hydraulic transmission system during the early 1930s, which at the time proved superior to the diesel-electric transmission system. NSB ordered two locomotives in 1937 to test out the new technology. However, the deliveries were delayed and in the end only one locomotive was delivered, in 1942. The locomotive was designed to be operated in pairs, and thus only received a cab at one end. As only one unit was delivered, the locomotive was in need ofturntables
A phonograph, in its later forms also called a gramophone (as a trademark since 1887, as a generic name in the UK since 1910) or since the 1940s called a record player, or more recently a turntable, is a device for the mechanical and analogu ...
to operate. The locomotive was numbered 601, allowing for ample additional steam locomotives to be delivered in the remaining, lower-numbered slots.Aspenberg (1999): 203
The locomotive was initially used on the Bergen Line. The advanced designed, combined with lack of suitable competence among NSB's staff and lack of spare parts, resulted in the locomotive seeing little revenue use. After a few years it was taken out of service and did not re-enter use until 1947, when the diesel shortage had diminished. A contributing factor was also the poor workmanship caused by the wartime industry. The locomotive was transferred from Oslo to Bergen District on 20 December 1945 and was used on the Bergen Line. During 1952 the locomotive started being used on the Dovre Line, and it was official transferred to Trondheim District on 20 October.
The class was important for NSB to gain insights into operations and technical aspects of diesel operations. This resulted in NSB taking delivery of the Di 2 class from 1954.Aspenberg (1999): 204 The units remained the most powerful diesel locomotives used by NSB until the delivery of the Di 4 in the 1980s. On 4 October 1957 the engine returned to Oslo District, this time to be used on the Gjøvik Line, and to a less extent the Kongsvinger Line. The locomotive was retired on 24 July 1959, and sold to Brødrene London as scrap, and has thus not been preserved.
Specifications
The diesel-hydraulic locomotive had a 1'BB'1 wheel arrangement and an overall length of . It was designed to be run i multiple and had a driver's cab in the one end only. The unit had two six-cylinder,four stroke
A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either directi ...
diesel engines, the MAN
A man is an adult male human. Prior to adulthood, a male human is referred to as a boy (a male child or adolescent). Like most other male mammals, a man's genome usually inherits an X chromosome from the mother and a Y chromo ...
W6V 30/38, each with a power output of , giving a total power output of . The locomotives weighed , giving a maximum axle load of 15 tonnes. The locomotives had a maximum speed of , and were during revenue trials on the Bergen Line capable of reaching a maximum and up the steepest hills.
References
Bibliography
* {{NSB stock Di 1 Diesel locomotives of Norway Krupp locomotives Railway locomotives introduced in 1942 1942 establishments in Norway Individual locomotives of Norway