Home »

Dsb class my

The meaning of «dsb class my»

The class MY is a class of diesel-electric locomotives built in the years 1954–65 by NOHAB. A total of 59 units, numbered 1101–1159, were delivered to the Danish State Railways. Powered by GM-EMD engines, the locomotives represented a significant change in rolling stock policy — motive power had largely been sourced from within Denmark for several decades.[4]

In the early 50s the DSB was starting to look for a new type of motive power that could replace steam locomotives in Denmark.

MY 1101 was built by NOHAB alone, but all subsequent units had bodies, underbodies and bogies[1] built at Danish manufacturer Frichs in order to limit foreign currency spending.[5] For the same reason, and because of pressure from Danish industry, the electrical systems of MY 1105 and later were sub-supplied by Danish companies Thrige and Titan.[6][7]

The DSB ordered the first four units which arrived at Helsingør in 1954. The locomotives quickly became very popular among both passengers and crew.

44 of them were built between 1954 and 1958 and a further batch of 15 engines was delivered in 1964 and 1965.[8]

To replace steam on branch lines, a similar but lighter locomotive, the class MX, was developed, incorporating a 12-cylinder 567 engine.[9]

In their early years the locomotives hauled express trains (later known as InterCity) and heavy freight services, but in their later years they were transferred to smaller regional and light freight services.

In the 1980s and 90s the DSB began to have less and less need for them, and the last ordinary MY-hauled train ran in 2001. One unit however, 1135, is now a special service locomotive which runs special trains, so DSB still has MY locos in service. The others have either been scrapped or sold to diverse private operators in Norway, Germany and Sweden, who now use them on light freight duties. They are called TMY in Sweden (as diesel locomotives have names beginning with T in Sweden).

Many locomotives similar to the MY survive in other countries. They include:

The first four units, 1101–1104, were delivered with 1,700-hp EMD 567B engines along with a spare engine. Having a spare engine was later deemed unnecessary and the fifth 567B engine was thus built into MY 1105.[7] 1106–1144 were delivered with 1,950-hp EMD 567C engines. MY 1145–1159 were delivered with 1,950-hp EMD 567D1 engines.[10] However, their powerplants were frequently swapped around among the locomotives during maintenance.[11][12]

MY 1149 received a spare 645E engine (as used in class MZ, though with the turbocharger removed) after sustaining severe frost damage in the harsh winter of 1978–79.[1]

Starting in 1968 weaker MYs with 567B engines (1101, 1102, 1104, 1109, 1134) were reclassified as class MV keeping the same numbers.[13] In 1973, MV 1104 became a MY again while MY 1144 became a MV when their powerplants were swapped. Further two MV locomotives (1101, 1134) were subsequently reclassified as class MY in 1981 and 1984 and the remainder three were taken out of service between 1985 and 1987.[14]

Related Searches

DSB Class MY 1201-1202DSB Class MZDSB Class ME
DSB Class MXSiemens DesiroDSB class MR
DSB Class MHDSB Class MTHenschel DH 440
© 2015-2021, Wikiwordbook.info
Copying information without reference to the source is prohibited!
contact us mobile version