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| Audi SQ7 TDI |
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<< Prev Page 2 of 3 Next >>  The 4.0 TDI in the Audi SQ7 TDI works with strong partners. The proof is in the road behavior, from extremely comfortable cruising on the Autobahn to dynamic handling on mountain passes. The redesigned eight-speed tiptronic is impressively efficient. It changes gears extremely quickly and efficiently, and at high speeds allows coasting at idle. A self-locking center differential is the heart of the quattro permanent all-wheel drive system. It is compact, lightweight and interacts very precisely with the suspension control system.The maxim of lightweight construction also applies to the suspension - its links are made primarily of aluminum. Electromechanical power steering, the Audi drive select driving dynamics system and adaptive air suspension with S-specific tuning are standard. An optional brake system with extremely lightweight carbon fiber-ceramic disks will follow shortly after the market launch. Audi offers the SUV with 20-inch wheels on 285/45 tires, with options up to 22 inches from the quattro GmbH program. Audi offers the SQ7 TDI with an optional driving dynamics package comprising three technology modules: sport differential, electromechanical active roll stabilization and all-wheel steering. The highly integrated suspension control unit is used in the SQ7 TDI. It assumes the central control of the adjustable shock absorbers, the air springs, the sport differential and roll force distribution. By bundling all relevant suspension functions into a central control unit, the developers achieved an optimal networking and coordination of the functions among themselves. The customer thus experiences outstanding handling in any situation. A new solution in the competitive environment is the electromechanical active body roll stabilization. Here a compact electric motor with a three-stage planetary gearbox separates the two halves of the stabilizer. On an uneven road surface, they are actively decoupled from one another, resulting in improved ride comfort. During sporty driving, the tubes are interconnected and twisted against each other. That significantly reduces body roll, i.e. the lean of the car. Together with the transmission, the electric motors produce anything up to 1,200 Nm (885.1 lb-ft) of torque. The effect is taut, sporty handling: The car leans less in bends and the tendency to understeer is further reduced. The front and rear stabilizer can be adjusted independently of each other. This active distribution of stabilizer forces between the front and rear axle has a positive effect on road behavior. Steering precision and the agility of the car improve significantly. Compared with conventional hydraulically switched stabilizers, the 48-volt-based system from Audi offers major advantages. It can develop more power, it works faster and it is activated even at low speeds. Because it requires no oil, the electromechanical active roll stabilization is also maintenance-free and environmentally friendly. With all-wheel steering, the rear wheels turn in by as much as five degrees, making parking easier. The more direct front-axle steering ratio of the SQ7 TDI improves the handling characteristics. Depending on the situation, the rear wheels steer opposite or in the same direction as the front wheels, improving dynamics and stability. For sporty drivers, it is one of the central objectives of road behavior: neutral handling up to the limit, even at high engine power. The optional sport differential provides stable and precise steering, particularly when accelerating dynamically out of curves. Variable torque between the wheels on the rear axle offers supreme control in curves. The SQ7 TDI is pressed precisely into the curve as a result. Even if the rear end starts to swing out, the quattro sport differential brings it back under control. This technology is available for the first time in the Q7 model line and is reserved exclusively for this top model. Thanks to systematic lightweight construction, the Audi SQ7 TDI is the lightest SUV in its segment, yet makes no compromises with respect to crash safety. The body features an innovative multimaterial construction. Hot-shaped and extremely strong sheets form the backbone of the occupant cell; the outer skin is made of aluminum. The center of mass is low - another factor for the sporty handling. The drag coefficient is an outstanding 0.34. << Prev Page 2 of 3 Next >> |
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