Diesel locomotive Calabro Lucane in southern Italy in 1926, following trials in 1924-5. In 1924, two diesel–electric locomotives were taken in service by the Soviet railways, almost at one time: In 1935, Krauss-Maffei, MAN and Voith built the first diesel–hydraulic locomotive, called V 140, in Germany. The German railways (DRG) being very pleased with the performance of that engine, diesel–hydraulics became the mainstream in diesel locomotives in Germany. Serial production of diesel locomotives in Germany began after World War II. In many railway stations and industrial compounds, steam shunters had to be kept hot during lots of breaks between scattered short tasks.
TU2 diesel locomotive trains. Later they were replaced by more modern designs. As of 2007, they are no longer in use on the narrow gauge railways in Russia, but some narrow gauge railways in Ukraine still use them. Many children's railways use TU2 locomotives too. The Aukštaitijos narrow gauge railway in Lithuania also still operates the TU2. TU2 is a diesel-electric locomotive. The main diesel engine is 1D12 and it produces 300 hp. The main engine drives the electric generator (195 kW) that supplies electricity to four traction motors, 62 kW each. TU2 diesel locomotive TU2 (ТУ2) is a Soviet narrow gauge diesel