Abstract
In the case of railway traction, an analysis on the influence the running resistance about the fuel consumption for the motors vehicles equipped with an internal source of energy(diesel engine or gas turbine) is necessary and from the perspective of the optimal way of their exploitation. This paper aims to determine the influence they have the aerodynamic phenomena on the running resistance and therefore to the fuel consumption, in case of traction vehicles equipped with diesel motors which are operated by the railway companies in Romania. To achieve the study, we considered the following vehicles: diesel electric locomotives LDE 060 DA of 2100 CP, LDE 060 DD of 4000 CP, LDE 060 EGM of 2100 CP, Carpathia DEM of 2300 CP and railcar Siemens Desiro. The calculation of fuel consumption is achieved in case of a path segment with a length of 1000m. In this sector, the above-mentioned vehicles were analyzed in three distinct situations: when moving with the maximum design speed kept constant; when towing of maximum tonnage when moving a constant speed; and when it is in the process of starting. This article is developed in the programs postdoctoral studies at the University Politehnica of Bucharest.
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