Elanvändning för längre och tyngre tåg: sammanfattning av resultat, erfarenheter och lärdomar från ELVIS-demonstrationsprojekt

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The ELVIS demonstration project aims to analyze how rail freight transports can be performed more efficiently. Hypotheses are that the transport efficiency can be improved by using longer and heavier freight trains and by implementing energy-related measures, and that there may be additional benefits for the companies and the society such as better utilization of the track capacity. This report summarizes the results and experiences from the three previously produced sub reports. In terms of both energy efficiency and overall efficiency for the rail transports researchers, companies and the Transport Administration concluded that there is a big need to secure the quality of the data that is produced. This applies to information about electricity consumption and the factors that possibly affect electricity consumption per (gross) tonne-kilometer, i.e. the train length, the gross weight of the train, number of stops, speed, the driving style, topography etc. The ELVIS project initiated a follow-up project that aims to compile and analyze the Transport Administration’s various databases in this area. The project will provide answers to questions such as what data the various databases contain, how data is collected and stored, for what purpose the data is collected and used, the extent to which data is quality assured and how data from different databases can be linked together. In the context of three case studies, Gävle-Malmö, Holmsund–Skövde och Mora-Gävle, several experiments with different explanatory variables were conducted. With regard to the different conditions and priorities in the case studies and experiments, it is difficult to make direct comparisons. Some general conclusions with respect to the use of electricity can be drawn, for example: • The trains’ weight (in tonnes) and length (number of wagons) affect the electricity consumption per tonne-kilometer in the trials where this is tested. • In some trials there is evidence that there are economies of scale, i.e. that the electricity consumption per tonne-kilometer decreases with increased train weight. • The train driver's driving style (feed back of electricity etc.) affects the energy consumption. This can be seen clearly in the trial Mora–Gävle.

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