Two-speed gearboxes for electric vehicles combined with an intelligent axle and torque delivery system put fun into the driving of battery-powered and hybrid vehicles, while at the same time extending the range. Automotive Industries (AI) asked Dr Ray Kuczera, SVP of Technology and Engineering, GKN Driveline, to explain what eTwinsterX is. GKN is a world leader in what we call eAxles and eTransmissions. We have over 400,000 in the market right now. eTwinsterX represents a big evolution of that. All the systems in the market today are single speed, with the exception of the one for the BMW i8, and GKN supplies that as well. eTwinsterX is a two-speed transmission, which also vectors torque output between the driven wheels.
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