VR Class Dv12

Last updated
Class Dv12
VR Dv12 locomotive in Tampere Aug2008 001.jpg
VR class Dv12 diesel-hydraulic locomotive at Tampere Perkiö depot. In the background VR class Dr14
Type and origin
Power typeDiesel-hydraulic
Builder Valmet Oy Tampere / Rauma-Repola Oy Lokomo, Finland
Build date1963–1984
Total produced192
Specifications
Configuration:
   AAR B-B
   UIC Bo′Bo′
Gauge 1,524 mm (5 ft)
Driver dia.1 m (3 ft 3.37 in)
Length14.00 m (45 ft 11+18 in)
Width3.24 m (10 ft 7+12 in)
Height4.6 m (15 ft 1+18 in)
Adhesive weight 7.8 t (7.7 long tons; 8.6 short tons)
Loco weight62.2 t (61.2 long tons; 68.6 short tons)
Fuel type Diesel
Prime mover Tampella MGO V16 BSHR & SACM
Engine type V16 diesel engine
Cylinders 16
Transmission Hydraulic Voith L 216 rs
Performance figures
Maximum speed125 km/h (78 mph) or 85 km/h (53 mph)
Power output1,000 kW (1,300 hp)
Tractive effort 200 kN (45,000 lbf)
Career
Operators VR
Class Dv12
Number in class192
Numbers2501–2568, 2601–2664, 2701–2760
DispositionIn Service

The Dv12 (Sv12 and Sr12 until 1977 [1] ) is the standard Finnish medium-weight diesel-hydraulic road switcher operated by VR. As all the main lines of Finnish railway network have been electrificied, the locomotive is designated mostly to unelectrified, less frequently used side lines. [2] Occasionally it may still pull cargo trains on main lines. It has also been put in service as a shunter, replacing older classes Dv15 and Dv16 as they were retired. A total of 192 locomotives were built by Lokomo and Valmet between the years 1963 and 1984. [3] [4] As of 2022, the oldest Dv12 units still in use are 59 years old.

Contents

Technical information

A Dv12 class diesel locomotive passes Huutokoski while pulling a regional train from Pieksamaki to Joensuu. Dv12 Hko cropped.jpg
A Dv12 class diesel locomotive passes Huutokoski while pulling a regional train from Pieksämäki to Joensuu.
A pair of Dv12 locomotives at Kolari, July 2007 Dv12 locomotives at Kolari.jpg
A pair of Dv12 locomotives at Kolari, July 2007

The Dv12 is a general purpose locomotive which was designed for both passenger and cargo train use. Its 1000 kW power is somewhat low by current standards, but it is capable of multiple-unit operation with only one train crew and doublets and triplets are common. [1] It has a low axle load of 15.6 tonnes, which makes it very well suited for branch lines that allow only smaller axle loads. [1] All the axles are interconnected with shafts and universal joints to the Voith L 216 rs hydraulic transmission. [2] Because all axles must rotate at the same speed, the individual slipping of axles is impossible. This translates into a very good tractive effort for a 62 tonne locomotive. The main engine is a Finnish-built Tampella SACM MGO V16 BSHR Diesel with two Brown Boveri-VTR 200 M turbochargers. [1]

The Dv12 has two speed ranges, 85 km/h (53 mph) for cargo use and 125 km/h (78 mph) for passenger use. [1] This mechanical gear can only be switched with the locomotive at standstill.

Variants

Sr12

Between 1965 and 1972, 60 slightly heavier variants of the Sv12 were built. [5] These were assimilated in the same series when their nomenclature changed to Dv12. [5]

Sv1

Dv12 number 2501 was modified between 1978 and 1980 to run on electricity instead of diesel, becoming class Sv1 number 3201. [6] The locomotive was used first in freight traffic, later in passenger trains between Helsinki and Imatra. [7] The Sv1 was used to test three-phase alternating current electrical engines; the results were used when developing class Dr16. [7] The electrical components were delivered by Strömberg, [6] which was also involved in the Dr16 project. The locomotive was painted yellow with black stripes, a colour scheme known from another short-lived prototype, the Dr15.

In 1984, after four years of testing, the Sv1 was refitted with a diesel engine, returning to its original nomenclature and number. [6] Number 3201 is nowadays used on an Sr2 class locomotive. Dv12 number 2501 is currently, in 2019, still in use.

Retirement and future development

In 2009, VR abandoned some of the older units of 2700 series Dv12s. [8] The company plans to purchase new diesel locomotives during the 2010s. [9]

Related Research Articles

<span class="mw-page-title-main">VR Group</span> State-owned railway company in Finland

VR-Group Plc, commonly known as VR, is a government-owned railway company in Finland. VR's most important function is the operation of Finland's passenger rail services with 250 long-distance and 800 commuter rail services every day. With 7,500 employees and net sales of €1,251 million in 2017, VR is one of the most significant operators in the Finnish public transport market area.

<span class="mw-page-title-main">Oulu railway station</span> Railway station in Oulu, Finland

The Oulu Railway Station is located in the centre of Oulu, Finland, in the city district of Vaara. All trains are operated by VR. Nearby is the Oulu bus station for long-distance buses.

<span class="mw-page-title-main">VR Class Sr1</span>

The Sr1 is a class of electric locomotives built for VR of Finland. These 25 kV locomotives were built in the Soviet Union at the Novocherkassk Electric Locomotive Factory between 1973 and 1985. Two additional locomotives of this class were built at the VR Hyvinkää Machine Workshop in 1993 and 1995, number 3111 from spare parts and number 3112 from the original prototype locomotive that was never used by the VR. The official classification given by the manufacturer is VL70 or ES40.

<span class="mw-page-title-main">VR Class Sr2</span>

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<span class="mw-page-title-main">VR Class Dr16</span>

The Dr16 is a class of diesel-electric locomotives used by VR. The 23 locomotives have a single, off-centre cab and are currently VR's most powerful diesel locomotives. Their nickname is "Iso Vaalee". They are presently mainly used on heavy freight services in northern Finland; their main passenger duty is the haulage of trains on the non-electrified line between Kemi and Kolari in Lapland. Dr16 locomotives were also used extensively on the line between Oulu and Rovaniemi, prior to the completion of the electrification of the line in 2004.

<span class="mw-page-title-main">VR Class Sm1</span>

The electric multiple unit Sm1 is a class of commuter train equipment that was in active use by VR from 1969–2016. Fifty Sm1 units were built between 1968 and 1973 at Valmet airplane factory in Tampere. They were put into use on the first electrified Finnish railway line between Helsinki and Kirkkonummi on January 26, 1969 with five units in operation. All Sm1s were thoroughly renovated between 1994 and 2000. Commercial service ended in April 2016.

<span class="mw-page-title-main">VR Class Sm2</span>

The Sm2 is a class of electric multiple units in use by VR in its commuter rail traffic in southern Finland. Fifty Sm2 units were built between 1975 and 1981 by Valmet in Tampere. Since the withdrawal of the older Sm1 units, the Sm2 units are the oldest multiple units in use in Finland.

<span class="mw-page-title-main">VR Class Dm7</span> Diesel multiple unit locomotives

The Dm6 and Dm7 were diesel multiple units built by Valmet in the 1950s and 1960s for Valtionrautatiet. They are known by their nickname lättähattu.

<span class="mw-page-title-main">VR Class Dr14</span>

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<span class="mw-page-title-main">VR Class Dm10</span>

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<span class="mw-page-title-main">VR Class Pr1</span>

VR Class Pr1 was a tank steam locomotive for local passenger services of Finnish railways.

<span class="mw-page-title-main">Finnish Steam Locomotive Class B1</span>

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<span class="mw-page-title-main">VR Class Hv1</span>

The Finnish VR Class Hv1 was a 4-6-0 express passenger train locomotive. 42 were built between 1915 and 1921. They were numbered 545–578 and 648–655.

<span class="mw-page-title-main">VR Class Vr1</span>

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<span class="mw-page-title-main">VR Class Vr3</span>

The VR Class Vr3 was a class of steam locomotive built in Finland. Before 1942, the class was known as O1. They were nicknamed Kukko and they have the same frames and boiler as the Vr Class Pr1 (Paikku) locomotive. The first locomotive was ordered in 1924 from Hanomag of Germany, number 10 351 and it was numbered 752. The remaining 4 were produced by Tampella Oy in Tampere. They were numbered 752 to 756.

<span class="mw-page-title-main">VR Class Tr1</span> Finnish steam locomotive

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<span class="mw-page-title-main">VR Class Vk4</span>

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<span class="mw-page-title-main">VR Class Pr2</span>

The Finnish VR Class Pr2, nicknamed "Henschel", was a passenger tank class ordered from the Henschel & Son locomotive workshops by the Estonia State Railways in the spring 1939 and completed in 1941. The outbreak of the Second World War prevented their delivery to Estonia, but at least a few of these engines did manage to operate in Latvia in 1942. These engines became superfluous, because the Germans were converting the Baltic tracks to standard gauge, and so Finland could purchase these four engines. They were classified Pr2 and numbered 1800–1803 after their arrival in December 1942.

<span class="mw-page-title-main">VR Class Dr13</span>

VR Class Dr13 was a heavy diesel locomotive used by VR Group. The Dr13 was designed by the French company Alstom. The class consisted of 54 locomotives, of which the first two were built by Alstom’s factory in Belfort, France and were shipped to Finland in 1962, while the rest were built in Tampere at the factories of Lokomo and Valmet. The first Dr13 series locomotive came to Finland on 24 October 1962. The Dr13 series was introduced between 1962 and 1963, and the last units were withdrawn by June 2000.

References

  1. 1 2 3 4 5 Eonsuu, Honkanen & Pölhö 1995, p. 20.
  2. 1 2 Eonsuu, Honkanen & Pölhö 1995, p. 21.
  3. Auvinen & Ahtiainen 2008.
  4. Eonsuu, Honkanen & Pölhö 1995.
  5. 1 2 Eonsuu, Honkanen & Pölhö 1995, p. 24.
  6. 1 2 3 Eonsuu, Honkanen & Pölhö 1995, p. 87.
  7. 1 2 Jokinen, Kari. "Veturitalli – Suomalaisia mahtivetureita" (in Finnish). Sv1 "Sähködeeveri". Retrieved 4 September 2011.
  8. "Suruliputus saatteli veturit viimeiselle matkalle" (in Finnish). Ilta-Sanomat. 14 October 2009. Archived from the original on October 15, 2009. Retrieved 5 May 2011.
  9. "VR suunnittelee uusia vetureita radoille jo vuonna 2015" (in Finnish). Helsingin Sanomat. 1 October 2010. Retrieved 5 May 2011.

Literature