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The New Zealand DJ class locomotive is a type of diesel-electric locomotive in service on the New Zealand rail network. The class were built by Mitsubishi Heavy Industries and introduced from 1968—1969 for the New Zealand Railways Department with a modernisation loan from the World Bank to replace steam locomotives in the South Island, where most of the class members worked most of their lives. They are the second class of locomotive in New Zealand to utilise the Bo-Bo-Bo wheel arrangement, the other classes being the EW class and the EF class. In both cases, this wheel arrangement was used to provide a lower axle-load due to track conditions as well, particularly in the case of the DJs, a shorter wheelbase more suited to sharp curvature on secondary or tertiary routes. ==Introduction== With the ongoing dieselisation of the New Zealand rail network, NZR began looking at various options to replace the last remaining steam locomotives in the South Island, most notably the AB class, J class and JA class locomotives. The new locomotives would need to be capable of both mainline running and also be light enough to work on weight-restricted branch lines, particularly in Otago and Southland. A World Bank modernisation grant was obtained in 1967 and an order was placed with Mitsubishi Heavy Industries of Japan for 55 Bo-Bo-Bo diesel-electric locomotives. Following further discussions, the order was extended to 64 locomotives, delivered between 1968 and 1969 along with twelve DSA class and three DSB class shunting locomotives. On arrival, the new locomotives received the next available classification of DJ. They were the first locomotives in New Zealand to employ an AC/DC transmission, all previous diesel locomotive types had DC/DC transmissions. Following arrival of the full order of the DJ class locomotives, NZR was able to slowly phase out the remaining steam locomotives, ending in 1971. When the DJ class were ordered, no provision was made for train heating, which prevented the class from being used on the overnight 189/190 expresses between Christchurch and Dunedin until Otahuhu Workshops had constructed sufficient numbers of FS steam-heating vans for this purpose. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「New Zealand DJ class locomotive」の詳細全文を読む スポンサード リンク
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