Dalarna University’s latest Eximus variant has won the title of ‘The World’s Most Energy Efficient Vehicle’ at the Delsbo Electric 2019.
Delsbo Electric is a competition where the best and brightest students build battery powered rail vehicles to compete in energy efficiency.
Dalarna’s Eximus IV uses just 0.603 Watt-hours per person per kilometer. This implies a person could travel the distance between Stockholm (Sweden) and Buenos Aires (Argentina) using less than one liter of petrol!
In 2018, Dalarna University broke the ‘Energy Efficient Vehicle’ record and the 2019 team were under pressure to equal the same.
There was a sigh of relief from the team when it was clear that their vehicle Eximus IV had won and that it was the new world record holder:
”It feels great,” says student Peter Hagfalk. ”But best of all, we beat last year’s Eximus III.”
Dalarna’s students are tasked with building a brand new vehicle each year; they are allowed to examine previous year’s vehicles only after they have created a concept of their own.
According to this year’s team, Eximus IV is shorter and much lighter than previous models, weighing in at 65 kg – almost 21 kg less than last year’s Eximus III.
The weight reduction is achieved using ultra lightweight aircraft material, a new motor and new wheels. The 2019 vehicle also has a more efficient design thanks to extensive wind-tunnel testing.
This year’s HHK Innovation Award went to Chalmers Technical University’s Levitas, a small and inexpensive magnetically levitating vehicle.
Students from Chalmers have been developing a Maglev-train solution for existing rail tracks since 2016 onward.
At Delsbo Electric 2018, they solved how to build the magnetic suspension and demonstrated one side of the vehicle.
This year they have successfully put a whole vehicle in place that can carry a weight of 160 kg, and stays afloat two millimeters above and below the train tracks.
Chalmers notes that the engineering tolerances are extremely fine, and the advanced control system developed for the machine allows for simulation which will greatly speed up future development and innovation.
What makes Levitas a clear winner is its cost-effectiveness.
Maglev trains and magnetic tracks are extremely expensive to build, and the Levitas tech could form part of cheaper solutions impacting the future of travel.
Image and content: Delsbo Electric