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The Dr16 is a class of diesel-electric locomotives used by VR (Finnish Railways). The 23 locomotives have a single, off-centre cab and are currently VR's most powerful diesel locomotives. Their nickname is "Iso Vaalee" (Big Blonde). 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. [1] 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. [2]
In the beginning of the 1980s, Valtionrautatiet needed new locomotives to replace its aging Dr12 and Dv12 class diesel locomotives. [3] The company had installed a bigger engine on a Dr12 (which became the Dr15) and modified one Dv12 to run on electricity instead of diesel. [4] However, the company wanted a totally new locomotive, and finally chose Valmet's type M in 1983, with Strömberg providing the electrical components. [5] VR originally ordered 23 locomotives, [6] with an option of 20 more when the first series were delivered. [7]
It was originally planned that two locomotives would be first built as prototypes, [6] the first of them being fitted with a Wärtsilä engine and the second one with the Pielstick. [8] When the first prototype ran on its own on 22 April 1985 for the first time, [9] there was a Pielstick engine under its engine cover, because the Wärtsilä one had proved three tons too heavy. [8] When completion of the Wärtsilä engine was delayed a second time, the second prototype was also fitted with a Pielstick. [10] Due to these engine problems, the number of prototypes was extended to four in January 1986. [10] The locomotives, numbered 2801–2804, were taken into service in 1985–1987: [11] the first two had a Pielstick engine, the latter two a Wärtsilä. [10] On 13 March 1989 VR confirmed that Pielstick engines would be fitted on all the upcoming locomotives. [12] The Wärtsilä engines were kept on the two prototypes, as refitting them would have been too costly. [13]
After an extensive testing programme, the 19 series locomotives were delivered between 1990 and 1992. [14] The manufacturer had anticipated a larger series to be ordered to replace old heavy line diesels (Dr12 and Dr13); however, the rapid progress of the electrification of Finnish main lines decreased the need for new heavy diesel locomotives and thus no further orders materialized. [12] The locomotives were designed and assembled in Finland, either by Valmet Oy at Tampere (numbers 2801–2809) or by Transtech Oy at Otanmäki and Taivalkoski (numbers 2810–2823). [15]
Originally the engines were planned to be of Finnish design (Wärtsilä Vaasa 8R22), but after tests with two prototype locos, the engine type was changed into French Pielstick 12PA4-V-200VG. [16] The Pielsticks produced originally 1,660 kilowatts (2,230 hp), but in 1997 they were limited to an output of 1,500 kilowatts (2,000 hp) to increase durability. [17]
The locomotive was very modern at its time and it was among the first [6] to use microprocessor-controlled GTO thyristor inverter-driven three-phase asychronous AC motors. [18] The construction is modular, [19] and data is transmitted via optical fiber cables between modules.[ citation needed ] The maximum speed is 140 kilometres per hour (87 mph). [20] The maximum frequency of the inverters corresponds to 156 kilometres per hour (97 mph), and the locomotive has reached that in test runs.[ citation needed ] The locomotive provides 400 kW 1500 V electricity for heating of passenger cars. [21]
The first two prototypes were painted in a white/red livery to go with VR's recent InterCity brand, showcasing the VR logo next to the cab. [22] [23] The final livery (starting from number 2803) added some grey on the side of the engine covers. [24] Two of the locomotives (numbers 2816 [25] and 2819 [26] ) have been repainted in a new white/green livery in 2010 and 2011. These have been called Iso Kalpee (Finnish for "Big Pale") by railroad enthusiasts.[ citation needed ]
Of a total of 23 built locomotives, five Dr16:s have been withdrawn from service and/or scrapped. This includes all of the prototype locomotives (numbers 2801–2804), which were withdrawn between 2004 and 2009. [27] [28]
In addition to the prototypes, one series locomotive, number 2814, was scrapped in 2000 after sustaining serious damage in a level crossing accident near the municipality of Ii. [27] [29] After the accident, the obstruction clearing device of the Dr16 was redesigned and strengthened according to the recommendation of the accident investigation board. [27] [29]
Built | First test runs | Official delivery | Withdrawn | Notes | |
---|---|---|---|---|---|
2801 | 22 April 1985 | 25 June 1986 | 28 June 1989 | 20 January 2004 | Pielstick engine. |
2802 | 16 February 1986 | 16 March 1987 | 28 June 1989 | July 2009 | Pielstick engine. Closest to the series locomotives. |
2803 | 31 October 1986 | 30 December 1986 | 28 June 1989 | 20 January 2004 | Wärtsilä engine. |
2804 | 23 January 1987 | 30 September 1987 | 28 June 1989 | 30 November 2004 | Wärtsilä engine. |
Delivered | Withdrawn | |
---|---|---|
2805 | 28 December 1990 | |
2806 | 28 December 1990 | |
2807 | 28 December 1990 | October 2014 |
2808 | 28 December 1990 | October 2014 |
2809 | 11 February 1991 | |
2810 | 4 March 1991 | 6 July 2020 |
2811 | 10 April 1991 | |
2812 | 20 May 1991 | |
2813 | 25 June 1991 | |
2814 | 30 August 1991 | 9 February 2000 |
2815 | 27 September 1991 | |
2816 | 25 October 1991 | |
2817 | 22 November 1991 | |
2818 | 20 December 1991 | |
2819 | 23 January 1992 | |
2820 | 21 February 1992 | 23 February 2018 |
2821 | 26 March 1992 | |
2822 | 24 April 1992 | |
2823 | 30 June 1992 |
Sources: Pentikäinen 2006 , pp. 40, 50, 60, 100, 128; Isovaalee.info
Also known as type N locomotive (Finnish : N-veturi) or Dv13. It is a smaller work locomotive that implements some of the components of the Dr16. [30] The two locomotives share also the same computer system. [30] It is owned nowadays by Maansiirto Veli Hyyryläinen Oy (part of Destia group).[ citation needed ]
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