Diesel steam locomotive
Diesel steam locomotives were experimental railroad vehicles in the Soviet Union . With the development of diesel steam locomotives, attempts were made to circumvent the design disadvantages of the diesel locomotive by using a piston steam drive as an auxiliary drive. Although several operational vehicles were built, the project failed at the experimental stage.
history
The biggest problem in the development of diesel locomotives in the middle of the 20th century was the transmission of power from the diesel engine to the drive wheels. Since a diesel engine could neither be started under load nor its usable speed range was sufficient for different speeds, only diesel mechanical , hydraulic or electric transmissions later proved to be successful . Other power transmissions, for example with compressed air, failed. In the mid-1930s, the Soviet engineer Maisel designed the project for a traction vehicle that should start using the steam engine; a diesel engine should only be used at higher speeds.
A total of three vehicles were built - interrupted by the Second World War . In one vehicle, only the diesel engine was used at higher speeds, in the other two the steam engine then served as an auxiliary drive. Although all three vehicles were roadworthy and tested in the driver service, there were still numerous design flaws and technical problems. With the meanwhile mass production of diesel-electric locomotives with a better efficiency than diesel steam locomotives after the Second World War, the tests were stopped at the end of the 1940s.
Individual evidence
- ^ Klaus Töpfer (editor), Russian and Soviet steam locomotives , transpress Verlag, Berlin 1986, p. 263 ff.