Система полного привода 4MOTION и 4XMOTION

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Система полного привода 4MOTION и 4XMOTION

Оригинальный пресс-релиз на английском

4MOTION and 4XMOTION

Permanent All-Wheel Drive - In Two Versions:
New 4MOTION drive offers significant weight advantages

4MOTION: Torsen differential and 31° climbing gradient
4XMOTION: Centre differential, reduction gearing and 45° climbing gradient

Wolfsburg/ Florence, March 2010. All Touareg versions are equipped with permanent all-wheel drive. Unlike the first generation, however, two different systems are now being offered: 4MOTION for lighter off-road use, or - available as an option on the Touareg V6 TDI - the 4XMOTION system for tough off-road driving. The goal of the new 4MOTION drive was to offer a system which - while continuing to show good off-road capabilities as well as extremely safe and dynamic on-road properties - would be significantly lighter to improve fuel econo my values.

4MOTION
New generation Touaregs with the base version 4MOTION system have an all-wheel drive system with limited-slip Torsen differential (climbing gradient 31 degrees) and electronic differential locks (EDS) at all four wheels. Like the Tiguan Track & Field, the Touareg also has an "Off-road driving programme", which - at the press of a button - tunes the ABS, EDS and ASR for off-road duty, activates Hill Descent Assist and adjusts the automatic gearshift points.

4XMOTION
Nonetheless, there is still a worldwide clientele that uses the SUV under the most extreme conditions. As before, these customers can obtain the 4XMOTION drive (climbing gradient 45 degrees) with the Touareg V6 TDI. This option is offered as a "Terrain Tech" package. Like its predecessor, it consists of a locking centre differential with electrically controlled multi-plate differential and reduction gearing (2.69:1), increased ground clearance (10 millimetres in front, 15 in rear) and a fuel tank with 100 litres instead of 85. In normal operation, a slip-dependent and variable distribution of propulsive forces occurs between the front and rear axles (40:60). Moreover, the centre differen¬tial can also be locked for a rigid power distribution.
The reduction gear level can be electrically engaged via the switch on the centre console. It permits maximum utilisation of propulsive force at low speeds. This is how the Touareg V6 TDI attains the noted climbing gradient of 45 degrees - a 100 percent grade. As an option, a rear differential with transverse lock and 100 percent locking effect can be ordered. The driver initiates activation of the differential lock (100 percent). To improve traction and dynamic performance, the transverse lock is automatically activated and metered according to the driving situation.
To operate the different functions, the Touareg V6 TDI with "Terrain Tech" package has a rotary switch - similar to the one on the first generation Touareg - which the driver uses to adapt the car to driving conditions over five levels: 1. "On-Road"; 2. "Off-Road" (like "Off-road driving programme" plus automatic control of the mechanical locks); 3. Low (like "Off-road" plus activation of reduced gearing, higher shift points, no automatic upshift in manual mode); 4. Addition of centre differential lock; 5. Addition of rear differential lock.
On both the 4MOTION and 4XMOTION drive systems, it is possible to manually deactivate the Stop-Start system in off-road driving. With the 4XMOTION system, it is also possible to deactivate ESP. On vehicles with air suspension, the "Lock" switch can also prevent unwanted lowering of the vehicle from the Off-Road level to the Normal level by locking the system at 70 km/h.