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Submission: On July 25 via api from US — Scanned from DE
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ELECTRIC & HYBRID VEHICLE TECHNOLOGY JULY 2023: PAGE 78 Menu * Page View * Smart View * Issue List * Advertisers * Website * Feed DIRECT DRIVES REINV E continually improved. “Modern in-wheel motor technology is not only a powertrain technology – it aff ects the whole vehicle in ways never before imagined,” says Luka Ambrozic, business development o cer at Elaphe. Electric platform company REE’s X-by-wire REEcorner technology isn’t a ‘traditional’ in-wheel set-up either. “The REEcorner is a standalone module that off ers advantages from technological and economic standpoints including a precise ability to maneuver obstacles and di cult terrain,” says Peter Dow, vice president of engineering at REE. Other benefi ts include shorter service times, spare part inventory M aking its mark over a century ago, in-wheel electric motor (IWM) technology is nothing new. But the latest advances mean the terms ‘in-wheel motors’ or ‘e-axles’ aren’t strictly accurate. “Direct drive distributed architecture introduces key diff erences compared to an e-axle-based architecture,” states Gorazd Gotovac, CTO at Elaphe Propulsion Technologies. “Not only is space saved and energy loss in transferring torque eliminated, but the technology reduces the wheel actuator inertia to a minimum, enabling bidirectional control of the wheel/tire force with 15 times the bandwidth of any other powertrain architecture. We need to stop talking about IWMs as just an electric powertrain type and start to talk about direct-drive architecture that essentially allows control of each corner independently, together with the vehicle-level opportunities it brings.” Elaphe’s implementation of direct drive allows generation of vertical motion of the whole vehicle simultaneously with horizontal motion (torque vectoring), using a completely standard geometry of passive suspension systems. It can control the ride of a vehicle purely by software which can be 78 // July 2023 // www.electrichybridvehicletechnology.com ISSUE ARTICLES REINVENTING THE WHEEL RICHARD GOODING Visit Article. ISSUE LIST JULY 2023 MARCH 2023 NOVEMBER 2022 JULY 2022 MARCH 2022 NOVEMBER 2021 JULY 2021 MARCH 2021 NOVEMBER 2020 JULY 2020 Previous Next Library