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Audi Sport is introducing Dynamic Torque Control as the first electromechanical torque‑vectoring system for the rear axle, delivering maximum driving dynamics and safety. The system distributes up to 2,000 Nm of differential torque within just 15 milliseconds, operates in traction, coasting, and braking modes, and—thanks to 200‑Hz analysis—ensures agile, stable, and highly responsive control at all times.
Audi is bringing a world first in a production vehicle with the RS 5: Dynamic Torque Control in the rear transaxle. Electro mechanical torque vectoring is the invisible maestro conducting an orchestra of driving fun and safety like never before. This functionality is enabled by a central driving dynamics controller and the high-performance torque vectoring system. A water-cooled permanent-magnet electric motor with an output of 8 kW and 40 Nm serves as a high-voltage actuator, overdrive gears, and a conventional differential with low lock percentage are the key components. Combined, they can rapidly and precisely distribute torque between the rear wheels. It takes just 15 milliseconds – around a tenth of the blink of an eye – for the electro mechanical torque vectoring to deploy torque differences of up to 2.000 newton meters and react to any driving situation.
The overdrive gears use the actuator’s torque to transfer this difference to the wheels via the driveshafts. Unlike purely mechanical systems, electro mechanical torque vectoring can transfer torque in either direction. It operates accurately and reliably, both on and off throttle as well as under braking – irrespective of which way the forces are pushing. The result: both under forceful acceleration and sudden braking, the system’s full potential is always available.
Electro mechanical torque vectoring in the rear transaxle ensures a perfect balance between agility, stability, and traction. In a straight line, the system initially splits torque evenly between both wheels. When necessary, it shifts it to the wheel with better traction – guaranteeing the Audi RS 5 maximum acceleration. When entering a corner, the torque differential has a stabilizing effect for high directional stability. At corner exit, torque is shifted to the outer wheel where it helps rotate the vehicle and realize its acceleration potential. Because the torque vectoring can be tuned differently for different cornering phases and different drive select modes, drivers can experience a broad range of driving characteristics in their RS 5.
The driving dynamics controller (HCP1) makes this possible. It continuously analyzes many different input values: the driver’s inputs – such as steering angle, throttle position, and brake pressure – are all taken into account. As is data about the vehicles current state – such as longitudinal and transverse G forces, yaw rate, slip angle, speed, and the surface’s estimated friction coefficient. All computations happen in one place. At a frequency of 200 Hz – meaning every five milliseconds – the driving dynamics controller calculates the target differential torque for the given driving situation. This is then applied by the electro mechanical torque vectoring with the utmost dynamics and precision.
This rapid and exact torque distribution supports drivers under sporty as well as tricky driving conditions. During fast cornering, it means the RS 5 turns in more readily and has immense traction on corner exit, during sudden lane changes on the highway it ensures safety and directional stability. The car reacts precisely and directly to steering inputs for the highest level of control and agility in any conditions and on any surface.
Put simply, the innovation of quattro with Dynamic Torque Control combines the advantages of a conventional limited-slip differential with that of mechanical torque vectoring systems – without their drawbacks. The result: a highly dynamic and controllable system that ensures driving fun, stability, and safety both in day-to-day driving and at the limit.
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- Love the exterior except those radars on the grill but the interior is downright hideous.- Looks way to busy, like those cars with all the wings and sht. This doesnt look sexy or beautiful, it looks trans.
- Maybe its a stupid thing but if the graphic on the Screen of the car is green and i want to change it to different color it will look like shit.
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