Experimental research of transmissions on electric vehicles’ energy consumptionExperimental research of transmissions on electric vehicles’ energy consumption Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2020-09-292019enThe growth of electric vehicles share of total passenger-vehicle sales is evident and is expected to be a very big market segment by 2030. Range of travel and pricing are the most influencing factors that affect their gain in market share. As so, powertrain development is a key technology factor researched by the automotive industry. To explore, among others, how the energy consumption of zero emission vehicles is affected by different transmissions, we developed, built and installed a variety of them on a custom hydrogen fuel cell powered urban vehicle. In this work we present a comparison of the effect, on the energy consumption of the proposed testbed, of a prototype custom build 2-speed gearbox and a single stage transmission. Results presented show a reduction of the overall energy consumption with the use of the 2-speed gearbox, compared to single stage, as well as the effect of gear change speed, related to speed, in energy consumption. Finally, a correlation of experimental results using a custom build CVT is conducted compared to single stage transmission. A comparison to simulation results found in literature is performed for all the transmissions tested on road.http://creativecommons.org/licenses/by/4.0/Energies123Spanoudakis_et_al_Energies_12(3)_2019.pdfChania [Greece]Library of TUC2020-09-28application/pdf2.6 MBfree Spanoudakis Polychronis Σπανουδακης Πολυχρονης Tsourveloudis Nikolaos Τσουρβελουδης Νικολαος Doitsidis Eleftherios Δοϊτσιδης Ελευθεριος Karapidakis Emmanouel S. MDPI 2-speed CVT Electric vehicle Energy consumption Gear change Transmission