Soviet locomotive class VM
Appearance
VM or BM | |||||||||||||||
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![]() VM or BM class diesel-electric locomotive | |||||||||||||||
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The VM or BM (Cyrillic script) was an experimental Soviet diesel-electric locomotive named after Vyacheslav Molotov (Russian: Вячеслав Молотов). It was a two-unit machine of 2-Do-1+1-Do-2 wheel arrangement and only one pair of locomotives was built.[1]
Powertrain
The two diesel engines were of the six cylinder, four stroke type. They were Soviet-built and based on the MAN engine used in the Soviet E el-5 locomotive. The MAN engine was rated at 1,200 hp (890 kW) at 450 rpm but the Soviet engines were de-rated to 1,050 hp (780 kW) at 400 rpm. The traction motors were similar to those used in the Soviet E el-12 locomotive but the rating of each motor was increased from 190 hp (140 kW) to 207 hp (154 kW).
References
- ^ Westwood, J.N. (1963). Soviet Railways Today. London: Ian Allan. page 69