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A Full-System Approach to Maximize Energy Efficiency of a Wheel Bearing
Technical Paper
2020-01-1631
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Environmental sustainability is morphing Automotive technical development strategies and driving the evolution of vehicles with a speed and a strength hardly foreseeable a decade ago. The entire vehicle architecture is impacted, and energy efficiency becomes one of the most important parameters to reach goals, which are now not only market demands, but also based on regulatory standards with penalty consequences. Therefore, rolling drag from all bearings in multiple rotating parts of the vehicle needs to be reduced; wheel bearings are among the biggest in size regardless of the powertrain architecture (ICE, Hybrid, BEV) and have a significant impact.
The design of wheel bearings is a complex balance between features influencing durability, robustness, vehicle dynamics, and, of course, energy efficiency. Whereas the driving efficiency and durability have always been main drivers for wheel hub designs, the upcoming development of BEVs, which use large battery packs, has introduced additional needs for compactness and increased carrying capacity. The ability to extend the range of such electric powered vehicles is much more stringent than for ICEs and Hybrids, and, they still require weight and friction reductions.
The keys to an optimum design are:
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Re, P., Lamboglia, F., and Missiaggia, G., "A Full-System Approach to Maximize Energy Efficiency of a Wheel Bearing," SAE Technical Paper 2020-01-1631, 2020, https://doi.org/10.4271/2020-01-1631.Also In
References
- European Commission
- Environmetal Protection Agency - Office of Transportation and Air Quality 2012
- Shevket , C. , Ciulla , L. , and Re , P. Development of Low Friction and Light Weight Wheel Hub Units to Reduce both the Brake Corner Unsprung Mass and Vehicle CO2 Emission (Part 1-Friction) SAE Technical Paper 2010-01-1706 2010 10.4271/2010-01-1706
- Sguotti , L. , Olivieri , D. , and Bosco , D. SKF Contributes to Climate Change Mitigation with Friction Optimized Wheel Bearings SAE Int. J. Passeng. Cars - Mech. Syst. 9 3 1270 1278 2016 10.4271/2016-01-1959