4WD (NPK)

From NAGTROC

The new Nissan GT-R uses probably the most advanced four-wheel drive system on a road car ever used. The all-wheel drive (ATTESA E-TS) optimally distributes power to the front wheels when and if necessary. Though naturally rear-drive biased, up to 50 percent of torque can be fed forwards improving traction in difficult conditions - such as rain, frost, ice or snow. Front drive is also utilized to improve cornering performance on tarmac, improving traction and stability.

Special computerized control automatically alters the front/rear torque split from zero torque at the front wheels, to 50 percent of total torque. The control is varied continuously, as various sensors on the car measure speed, lateral and transverse acceleration, steering angles, tire slip and other road surface and yaw rate.

On the new Nissan GT-R an additional sensor is the yaw-rate feedback control, which measures the difference between the target yaw rate calculated from the steering angle, the actual yaw rate detected by the yaw-rate sensor and G sensor. Front and rear torque is automatically corrected accordingly.

The four-wheel drive system includes a Vehicle Dynamic Control (VDC-R), the Nissan GT-R's electronic stability control system. This continually monitors the vehicle's behavior. If off balance behavior is detected - such as sliding or skidding - torque to the wheels will be altered to help stabilize the car. Electronic traction control is also fitted to rear mechanical limited slip differentials, preventing wheelspin and improving grip.

Hill Start Assist Function added for assisting start on the uphill road. (On an uphill grade, the system maintains brake pressure for a few seconds after release of the brake pedal)

VDC-R

To further enhance vehicle stability control, the Nissan GT-R has adopted four additional brake fluid pressure sensors in each wheels. And for enhancing the driving performance by utilizing 4WD control effectively, set the mode selectable function to change the mode of VDC-R. The mode can be selectable by set-up switch located at the center console. Hill Start Assist Function added for assisting start on the uphill road. (On an uphill grade, the system maintains brake pressure for about two seconds after release of the brake pedal)