Diesel locomotive Dv12s. In the 21st century series production standard gauge diesel–hydraulic designs include the Voith Gravita, ordered by Deutsche Bahn, and the Vossloh G2000, G1206 and G1700 designs, all manufactured in Germany for freight use. Steam-diesel hybrid locomotives can use steam generated from a boiler or diesel to power a piston engine. The "Cristiani Compressed Steam System" used a diesel engine to power a compressor to drive and recirculate steam produced by a boiler; effectively using steam as the power transmission medium, with the diesel engine being the prime mover The diesel-pneumatic locomotive was of interest in the 1930s because it
TU2 diesel locomotive TU2 diesel locomotive TU2 (ТУ2) is a Soviet narrow gauge diesel locomotive for the track gauge of The decision to replace steam locomotives by diesel ones on the narrow gauge railways was taken after the Second World War. The first diesel locomotive built for the narrow gauge railways was the TU1, built in 1954; only two locomotives of this type were built. The TU2 was an improved redesign of the TU1. The first TU2 was built in 1955. The first TU2 was tested on the test site of the Central Scientific Institute (in Shatura), that belonged to the Ministry of