In mid-July, Guinness World Records recognized the TUfast Eco Team for breaking the Guinness World Record for most efficient electric vehicle with a car they designed, engineered and built.
During the record run, the wedge-shaped TUfast electric- and solar-powered eLi14 vehicle – assembled for a contest in 2014 by a team of students and alumni from the Technical University of Munich – hit a Guinness World Record mark of 1,232 km/kWh, equivalent to 10,956 km per litre of 95 octane gasoline, or 26,135 US MPGe.
On its first run, at a speed of 25 km/h for a full hour, the eLi14 achieved an average energy use number of 1,142 km/kWh; the TUfast team wasn’t satisfied with that number, although they had already achieved their goal of 1,000 km/kWh, so they sent the car out again for what turned out to be their record-setting run.
The wedge-shaped land-rocket-like eLi14 is made out of carbon-fibre-reinforced plastic (CFRP) and weighs less than 30 kg. It’s powered by an electric motor that is fuelled by power supplied by LiPo batteries and solar cells. Total power output is rated at about 140 watts, and it’s designed to travel at about 30 km/h.
TUfast has been entering global fuel efficiency competitions since 2011, and originally built the car in 2014, for the Shell Eco-Marathon in the Netherlands and EducEco in France.
In advance of the record-setting attempt, TUfast made the eLi14 even more efficient with a few upgrades, including a new custom controller for the electric motor, along with a revised magnet placement and silver wire coils. The car also received a new set of rims with ultra-low friction bearings.
Among TUfast’s long list of sponsors are Airbus Group and Audi AG, the latter of which supplied the test track where the record-setting run was made.
(via Audi and Gizmag)