Torque-vectoring dual-clutch unit requires only one motor for e-cars

October 29, 2019 //By Christoph Hammerschmidt
Torque-vectoring dual-clutch unit requires only one motor for e-cars
Automotive supplier BorgWarner has developed a torque vectoring system for electric vehicles which enables the use of just one electric motor instead of the traditional two that are typically found on electric vehicles. With this solution, EV developers can achieve more compact and lightweight designs.

Leveraging its all-wheel drive (AWD) and coupling expertise and portfolio, BorgWarner created its torque-vectoring dual-clutch unit, which features two clutches – one inner and one outer – that replace the conventional differential in an electric driveline. Traditional torque-vectoring systems require two e-machines in the rear, which makes them expensive and heavy, while the new dual-clutch solution conserves weight and space in the driveline, aiding in overall vehicle efficiency.

Designed to improve electric vehicle handling and maneuverability, BorgWarner's torque-vectoring dual-clutch commands torque independently, distributing torque to the left and right wheels from its position on the rear axle. The torque-vectoring dual-clutch, connected to one electric motor and featuring two reversible GenVI actuators (one per clutch), dynamically transfers torque for improved steering response and controllability, delivering a stable, experience for the customer. This system has a capacity of up to 2,600 Nm per clutch and has a feature that disconnects the rear-axle when all-wheel drive isn't needed. The vehicle then operates in front-wheel drive, resulting in reduced losses and increased range for electric vehicles.

Start of production will kick off in the first half of 2022 for a major, global OEM's electric vehicle, Borg Warner informed.

More information: https://www.borgwarner.com

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Torque vectoring

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