Energimätning på tåg för rundvirkestransporter på sträckan Mora–Borlänge–Gävle

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Joakim Ahlberg

The third sub-project of ELVIS demonstration project for longer and heavier freight trains aims to analyze and measure energy usage of heavier trains. With heavier refers to a higher overall weight by more wagons, both loaded and unloaded, than would normally run on the route. The assumption is that heavier trains are able to do (freight) transport more energy efficient. The goal is to primarily test the hypothesis: · That energy consumption per ton can be reduced by using heavier trains. The report also illustrates the difficulties of using existing data for the evaluation of energy consumption on trains. The data in these has not been quality assured for the purposes of this study, which has caused a lot of errors and the credibility of some results are lower than otherwise would be needed. Thus, a conclusion from the project is that it would take a review of the databases of the Swedish Transport Administration on energy use should be studied further, at least if equipment such as their energy meter should be used. Alternatively, mount external equipment on locomotives to thereby generate more useful data; the latter, however, was not possible due to the owner of the locomotive. Given all sources of error associated with the data, the report analyze how the energy of a freight train is due to the gross weight of the train, the number of stops the train makes and drivers' driving style. Findings were that driving style plays a major role, between drivers the different in net energy used is up to 20 percent. Furthermore, there is differences in energy consumption connected to gross weights on the train, but then it's a bit unclear how the results should be interpreted in conjunction with the lack of quality of the data, it takes more measurements to be able to say anything definite. The same applies to the number of stops affecting the use of energy. On the first leg the number of stops had no impact on energy consumption, which it had on the investigation route.

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