TU-TESL

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According to foreign media reports, the first sport and leisure vehicle (SAV) BMW ix3 will debut this year. The new car will be equipped with a new lightweight aerodynamic hub, improving the appearance and quality of the vehicle and the endurance mileage. The new aerodynamic hub of BMW ix3, with aluminum based wheels and personalized plastic inserts, has the following advantages: (1) optimize the air flow around the wheel arch and reduce the weight by 15% compared with the previous aerodynamic hub of BMW; (2) reduce the drag coefficient by 5% compared with the BMW X3 equipped with conventional wheels, so as to improve the efficiency; benefit from the new wheel and aerodynamic design, BMW The overall efficiency of ix3 is increased by 30%. According to the European wltp test, the power consumption of the model is reduced by 2%, equivalent to 0.4 kwh / 100 km, so the range is increased by 10 km. Material advantages: (1) BMW claims that it is the first automobile manufacturer to combine cast aluminum wheels with inserts. The insert includes a plastic carrier and an aluminum visible surface. (2) In order to adapt to the lightweight base wheel, the precise forming insert is adopted and integrated to the outside of the wheel between the spokes, so that there is no obvious gap between them, effectively reducing the aerodynamic resistance of the wheel arch and improving the performance of the vehicle. (3) In the patented design, the new base wheel uses fewer materials, and reduces the unsprung mass through lightweight inserts, thereby improving driving force and efficiency. (4) In addition, because there is no need for additional tools to produce aerodynamically optimized hubs, the use of hybrid materials to produce aerodynamic wheels is conducive to improving resource utilization. The wheel appearance can be customized to widely adapt to the wheel design of future models, such as choosing different patterns and colors, as well as matte or polished surfaces. In the same wheel, the inserts can also be changed according to the surface design. The BMW inext and BMW I4 launched in 2021 will also be equipped with new aerodynamic wheels.