Zhang Longzhou (Lutz), senior mechanical engineer at Xiaomi EV (Beijing), holds a bachelor’s degree from Hubei Automotive Technology University. With 15 years’ experience in traditional and EV transmission components, he previously spent over a year in Germany at Getrag (now Magna Powertrain) developing dual-clutch transmission gears.
The paper examines how optimizing asymmetric gear tooth geometry through Direct Gear Design can improve load capacity, efficiency, and compactness in EV gearboxes, surpassing the performance limits of conventional symmetric gears.
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