GKN Driveline has announced that it will unveil the world’s most advanced electrified driveline technology at the 67th Frankfurt International Motor Show.
Called ‘eTwinsterX, the driveline offers three key advantages over conventional electric drivelines. Starting with the design, the integrated coaxial format means that the electric drive (eDrive) unit is significantly smaller than other systems with equivalent power outputs.
Its size also contributes to its adaptability to suit any vehicle type, from city cars to luxury plug-in hybrid SUVs, whether front-wheel drive, rear-wheel drive or all-wheel drive. The technologies within the eTwinsterX system also mean that it is the first eAxle in the world that has full off-road capabilities.
The eTwinsterX comes with a unique two-speed transmission that transmits the drive motor’s power, optimising gear changes for the best possible efficiency, as well as delivering seamless shift performance.
A further dynamic advantage is that the new eAxle incorporates GKN’s celebrated ‘Twinster’ torque vectoring technology, delivering significant advantages for vehicle stability, agility and safety.
GKN has till date manufactured more than 400,000 eDrive units, and eTwinsterX is a showcase for the company’s expertise in these integrated systems. Components are tightly packaged, and the powertrain elements share a common housing. This integrated format has significant benefits when trying to accommodate an eDrive unit within a vehicle chassis.
It also has advantages on vehicle assembly lines, because of the simpler method of installing a single all-in-one integrated system instead of multiple individual eDrive components.
Another feature is GKN Driveline’s Twinster torque vectoring solution which replaces a conventional differential with a twin-clutch system that precisely adjusts the torque delivery to each wheel.
Twinster technology is central to the new eTwinsterX driveline, delivering specific benefits for both fully electric and hybrid vehicles. Fully electric drivelines transmit high levels of torque instantly to the driving wheels, and by distributing this torque precisely between the wheels, GKN’s system ensures more stable take-off, acceleration and cornering.
Plug-in hybrid drivelines typically involve the addition of an electrified element to the rear axle, which adds weight and can increase the vehicle’s tendency to understeer. For these models, eTwinsterX’s precision torque distribution to the rear wheels can mitigate the change in mass, delivering greater agility and more engaging driving characteristics.
Image and content: GKN Driveline