Technical Data
The SM15 is equipped with a Soviet 550 kW diesel engine (a number of SM15s had Polish V12CD9 engines installed, rather than the Soviet variant) with hydromechanical transmission. Certain models destined for use in industry had hydraulic transmission, and these carried the designation Ls750Hu. The SM15 is a Bo-Bo locomotive, which means that the unit runs on two bogies. Each bogie has two separately propelled axles.
The main reason behind the SM15's short operational lifespan was the unreliability of its transmission and power units.
Read more about this topic: PKP Class SM15
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