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The Bearing Stiffness Effect on In-Wheel Motors

Elaphe Ltd., Teslova 30, Ljubljana 1000, Slovenia
Turkish Aerospace Inc., Ankara 06980, Turkey
Faculty of Mechanical Engineering, University of Ljubljana, Ljubljana 1000, Slovenia
Author to whom correspondence should be addressed.
Sustainability 2020, 12(10), 4070;
Received: 3 April 2020 / Revised: 11 May 2020 / Accepted: 12 May 2020 / Published: 15 May 2020
(This article belongs to the Section Sustainable Transportation)
In-wheel motors offer a promising solution for novel drivetrain architectures of future electric vehicles that could penetrate into the automotive industry by transferring the drive directly inside the wheels. The available literature mainly deals with the optimization of electromagnetically active parts; however, the mechanical design of electromagnetically passive parts that indirectly influence motor performance also require detailed analysis and extensive validation. To meet the optimal performance of an in-wheel motor, the mechanical design requires optimization of housing elements, thermal management, mechanical tolerancing and hub bearing selection. All of the mentioned factors have an indirect influence on the electromagnetic performance of the IWM and sustainability; therefore, the following paper identifies the hub bearing as a critical component for the in-wheel motor application. Acting loads are reviewed and their effect on component deformation is studied via analytically and numerically determined stiffness as well as later validated by measurements on the component and assembly level to ensure deformation envelope and functionality within a wide range of operations. View Full-Text
Keywords: air-gap; hub bearing; in-wheel motor; mathematical stiffness model; validation tests air-gap; hub bearing; in-wheel motor; mathematical stiffness model; validation tests
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MDPI and ACS Style

Biček, M.; Connes, R.; Omerović, S.; Gündüz, A.; Kunc, R.; Zupan, S. The Bearing Stiffness Effect on In-Wheel Motors. Sustainability 2020, 12, 4070.

AMA Style

Biček M, Connes R, Omerović S, Gündüz A, Kunc R, Zupan S. The Bearing Stiffness Effect on In-Wheel Motors. Sustainability. 2020; 12(10):4070.

Chicago/Turabian Style

Biček, Matej, Raphaël Connes, Senad Omerović, Aydin Gündüz, Robert Kunc, and Samo Zupan. 2020. "The Bearing Stiffness Effect on In-Wheel Motors" Sustainability 12, no. 10: 4070.

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