The DTF joint. Click to enlarge.

The DTF joint offers a direct connection to the gearbox or the differential without a flange with torque transmitted from the CVJ inner race to the output shaft; the DTF joint saves weight, assembly time, space and cost. While still ensuring efficient torque transmission, GKN Driveline has developed its DTF solution to reduce component complexity and make significant weight savings, reducing the risks of noise, vibration and harshness (NVH) and shaft stability typical in traditional propeller shaft designs. DTF solutions can be used to connect a propeller shaft to both a vehicle’s transmission and its rear final-drive unit.

The Constant Velocity Joint. Click to enlarge.

Another key feature of the GKN Driveline shaft on the new Audi A8 is the unique high-speed constant-velocity joint incorporating technology for efficient operation and an integrated “crash feature.” The latter, in conjunction with other system components, enables the shaft assembly to telescope inwards in a manner defined to support the crash safety strategy of the vehicle.

With the high performance nature of the vehicle requiring the propeller shaft to operate at extreme speeds of up to 10,500 rpm, GKN Driveline’s shaft is designed with a range of other features such as a high-strength light-weight steel tube, sealing systems and a low-level of rotational imbalance.

GKN Driveline is a leading global producer of sideshafts, propshafts, mechanically and electronically controlled torque management systems and associated geared components.