BorgWarner has developed a system that can enable EVs to use torque vectoring with just one electric motor instead of the traditional two. The Michigan-based parts supplier says its solution is cost-effective, light and compact. The company will start producing the system in the first half of 2022 for an unnamed auto manufacturer.
Traditional torque-vectoring systems require two e-motors, but BorgWarner’s Torque-Vectoring Dual-Clutch unit features two clutches – one inner and one outer – that replace the conventional differential in an electric driveline.
The Torque-Vectoring Dual-Clutch system commands torque independently, distributing torque to the left and right wheels from its position on the rear axle. The system connects to a single electric motor and features two reversible GenVI actuators (one per clutch) to transfer the torque. The system has a capacity of up to 2,600 Nm per clutch. To reduce energy losses and increase range, the system can also disconnect the rear axle when all-wheel drive isn’t needed.
“Our new Torque-Vectoring Dual-Clutch system, which minimizes wasted torque, conserves energy and requires fewer components, exemplifies how our existing internal combustion engine and driveline expertise complements our work with electric vehicles,” said Stefan Demmerle, BorgWarner President and General Manager.