Green Technology

New Rear Axle Design Creates Extra Vary For Smaller EVs

A brand new rear axle idea for small EVs has been developed by scientists on the Chair of Light-weight Car Development on the College of Siegen that may enhance the vary of a small EV by 35%. The brand new rear axle idea will increase the out there house for the battery within the physique and with the brand new battery house, it may possibly supply as much as 71 miles in further vary.

Whereas the restricted vary has been a difficulty with the smaller EVs as a consequence of its restricted out there battery house, the brand new rear axle might remedy the restricted house drawback for EV producers. The venture has been headed up by Professor Dr.-Ing. Xiangfan Fang and his group as a part of the “E-MLTA” analysis venture (improvement and testing of a space-saving multi-link torsion axle) along with Ford, VW, and different venture companions.

“Our thought was truly quite simple: we ‘turned’ the rear axle and moved the axle’s cross member to the rear, in the direction of the trunk,” says Prof. Fang. “This will increase the realm out there underneath the automobile for the battery on the entrance.” In an effort to preserve the automobile’s typical driving traits, nevertheless, the Siegen automobile producer needed to make additional changes to the axle — a number of hyperlinks and joints, amongst different issues, to make sure that the automobile behaves usually when braking and doesn’t go the wrong way up.

“We first designed the brand new axle on the pc and built-in it just about into the physique so as to have the ability to exactly calculate and simulate the properties,” explains venture worker Jens Olschewski.

To make use of it as a take a look at automobile, the scientists used a Ford Fiesta that was made out there by their venture accomplice Ford. The axle was applied in {hardware} with the venture companions from the business and put in within the Ford Fiesta. To imitate the load of the battery, heavy metallic plates have been positioned underneath the ground of the gasoline engine. The automobile was then geared up with in depth measurement know-how and examined extensively by specialists on the take a look at bench and on a take a look at monitor at Ford in Belgium.

The analysis group then carried out take a look at drives with all staff of the venture collaborating on the visitors coaching space in Olpe. The consolation and security of the automobile have been maintained in the course of the assessments, however the driving dynamics of the automobile carried out barely worse than automobiles with a traditional rear axle in some respects.

“However the distinction is so small that we will actually compensate for it by additional changes,” Prof. Fang is satisfied. Representatives of the 2 venture companions Ford and VW have been impressed by the outcomes general, and each corporations have been “very ” within the new rear axle.

With all the information the scientists gathered from the assessments, Prof. Fang and his group of researchers are engaged on additional bettering the brand new axle idea. The group is in discussions with a number of automobile producers with the purpose of putting in the rear axle as customary in small electrical automobiles. “We’d be very proud if, in a number of years, e-cars drove round with our axle,” says Prof. Fang.

Together with VW and Ford, there have been a number of corporations concerned within the venture — Mubea, Vorwerk Autotec, Schmedthenke Werkzeugbau, and CP Autosport GmbH have been additionally concerned within the E-MLTA venture. The Technical College of Cologne was additionally on board as an additional venture accomplice. Additionally along with Prof. Dr.-Ing. Xiangfan Fang and Jens Olschewski, additionally concerned have been Dr. Timo Schlichting and Tobias Niessing.

Of the 1.6 million euros in funding, 530,000 euros went to the College of Siegen. The venture was funded by the European Regional Improvement Fund (ERDF) NRW with 530,000 euros.

Supply: Universität Siegen

Picture: Andreas Göbel


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