|
German ''Kleinlokomotiven'' (literally: small locomotives) like the DRG Kö II (later: Köf II) were developed as locomotives with a low weight and driving power for light shunting duties. There were two classes, based on engine power. The Class II were engines which developed more than 40 (later 50) PS. After tests with several trial locomotives, they were placed in service from 1932 onwards by the Deutsche Reichsbahn (DRG) and used on small stations for light shunting and marshalling work. They were intended to make the handling of goods traffic more economical. To do that, an appropriately trained controller had to be able to handle shunting duties using the locomotive. Accordingly, the locomotive was designed to be robust and easy to operate. ==Technology== Light locomotives mainly used diesel motors (originally classified as ''Kö/Köf/Köe'' by the DRG), as their source of energy, but there were also versions with Benzol The locomotive is very small and yet of , standard gauge, size, but only fills about half the loading gauge profile. As a result, it can be loaded onto flat wagons. That was necessary, because if it had to move under its own power, its top speed of only would have seriously held up rail traffic. It is driven by a diesel engine, that works through a mechanical gear transmission system and dry clutch. Power is transmitted to the axles using a chain linkage. The light diesel locomotives were the first German diesel engines that were built in batches by several manufacturers. They were initially divided into two power groups: * Class I (initially , later ) * Class II (up to ) In the DR and DB over 100 new Köf II engines were further developed and built after the war. In the DR over 60 vehicles were produced and referred to as N4 by the manufacturers. These resembled the classical light locomotive very closely, but had a side rod drive. The first real development of the Köf in the GDR was the V15/V23. As in the DB, a decision was made to build a Köf III. This plan was subsequently discarded and replaced by the DR V60 project. The DB later developed a Köf III with up to . In 1987, the Class 260/261 (up to 1968 called V 60) engines were classified as light locomotives. The brake effort of the Kö was initially only the weight of the engine driver and the maximum force he could transmit via the brake pedal. With the introduction of new, more powerful motors (up to ) and the corresponding increase in tractive effort this proved far too little; as a result many light locos in the DB and DR were equipped with a compressed-air brake, that could also operated the brakes of attached wagons. In the DB the permitted top speed was raised from where compressed-air brakes had been installed. These locos can be easily recognised by their air reservoirs on the front. Because the open cab gave no real protection from the weather in winter, these were added during the course of main inspections from the late 1950s. 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「DRG Kleinlokomotive Class II」の詳細全文を読む スポンサード リンク
|