The bearing stiffness effect on in-wheel motors

Biček, Matej (author), Connes, Raphaël (author), Omerović, Senad (author), Gündüz, Aydin (author), Kunc, Robert (author), Zupan, Samo (author)

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.

• Language: English
• Keywords: air-gap, hub bearings, in-wheel motors, mathematical stiffness model, validation tests
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2020
• Number of pages: 18 str.
• Numbering: Vol. 12, iss. 10, art. 4070
• PID: 20.500.12556/RUL-126431
• UDC: 519.61:621.313.13(045)
• ISSN on article: 2071-1050
• DOI: 10.3390/su12104070
• COBISS.SI-ID: 16106243
• Publication date in RUL: 21.04.2021

Record is a part of a journal

• Title: Sustainability
• Shortened title: Sustainability
• Publisher: MDPI
• ISSN: 2071-1050
• COBISS.SI-ID: 5324897

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 15.05.2020

Secondary language

• Language: Slovenian
• Keywords: zračna reža, kolesni ležaji, znotraj kolesni motorji, matematični model togosti, validacijski testi

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: P2-0109
• Name: Modeliranje v tehniki in medicini