Riding on in-wheel motors

Researchers analyze passive concepts and new mechatronic suspension systems to ensure vehicle comfort and safety when using in-wheel motors with different torque requirements.

The R&D departments of almost every OEM in the world have the same goal: the electrified vehicle. While hybrids are seen as a bridge technology, electric vehicles (EVs) will decisively determine the future of transport. In-wheel motors present an attractive alternative to the more conventional concepts with a central electric motor, and they open the possibility to improve vehicle dynamics and handling Nevertheless, the automotive industry needs to cope with some unclear aspects regarding in-wheel motors before thinking about series production.

Packaging within the wheel and increased un-sprung masses are two of the biggest difficulties engineers developing in-wheel motors are dealing with. Increased unsprung masses worsen the ride comfort and the driving behavior. The analysis of these two aspects in a wide range of vehicle speeds is important.