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Audi, 40 years of four wheel drive
Forty years of all-wheel drive not a walk. From the debut of the legendary Ur-quattro, was on the occasion of the International Automobile exhibition in Geneva in 1980, Audi has produced 10.5 million cars with quattro. Now the House of the four rings he writes a further chapter to this success story, thanks to the introduction of the integral traction four with electric torque vectoring electric.

Numbers to hand, from 1980 to the present, Audi has produced 10.448.406 all-wheel drive quattro, 804.224 of which only in 2019. In 2019, almost 45% of all Audi cars produced in the world, coming mainly from the factories in Changchun (China) and San José Chiapa (Mexico), were equipped with the quattro. In Ingolstadt and Neckarsulm, in 2019, have been built 258.765 all-wheel drive.

The quattro is, therefore, an important pillar of the Brand with the four rings. Except for the range A1, is available for each model in the price list. All Audi high-performance, primarily belonging to the S series and RS, discharge to the ground power through the four-wheel drive.

Now to the quattro power is accompanied by a world first: the torque vectoring electric, which distributes torque between the rear wheels bringing the benefits guaranteed by the “classic” differential, a sporty Audi in the era of zero-emission mobility. The function torque vectoring and electrical, and the consequent distribution of the thrust between the rear wheels, is activated in a few milliseconds, while managing torque values are considerably high. Accelerating with the decision on the exit of the curve, is transmitted to the rear wheel outer up to 220 Nm of torque more than what is directed to the inner wheel. An operation that takes place with a time four times faster than a mechanical system and with the transmission of torque are considerably superior, to the advantage of the speed during the insertion and the agility of the SUV's electric Audi. A behavior made possible by a further technical refinement: the availability of three electric motors (two at the rear axle). A first for the models to zero emissions for the production in large series.

The function torque vectoring is, as mentioned, an evolution of the quattro four electric. This last result of the gradual electrification of the Audi range and linked in a special way, to the debut of the Audi e - tron, the first car with zero emissions House of the four rings. The system adjusts permanently and fully variable distribution of torque between the axles. An operation that takes just a few fractions of a second.

To obtain the maximum yield, in most cases, the SUV with zero emissions – and thus the variant of the coupe e-tron Sportback – uses predominantly, when not exclusively, to the electric motor in the rear. Similarly to the quattro mechanics with the ultra, the second axle (in this case the front) can be activated in a predictive manner. This happens when the driver requires more power than the electric motor on the rear may provide, or, proactively, before the motor is reduced because of the slippery fund (or in the guide involved in the curve). The two electric motors are sources of power that are ideal for the quattro electrical work is extremely precise and practically instantaneous: the distribution of torque between the axles, which basically favors the rear, has never been so quick. A feature made possible by the absence of any mechanical clutch and speed of distribution of electricity.

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