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Audi e-tron GT Concept Unveiled, Going to Production

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Audi presented the e-tron GT battery-electric four-door coupe as a concept show car at the LA Auto Show. The car will enter production in about two years, following the planned Audi e-tron SUV and e-tron Sportback set for 2019.

The flat-floor architecture provides for exciting proportions and a low center of gravity, while the 434 kW (590 hp) delivers performance fit for a sports car. The torque is transferred to the wheels via the quattro permanent all-wheel drive with torque vectoring. The performance subsidiary Audi Sport GmbH is responsible for subsequently transforming the car into a volume-production model.

The Audi e-tron GT concept has a 4.96-meter (16.3 ft) length, 1.96-meter (6.4 ft) width and 1.38‑meter (4.5 ft) height. The lightweight body of the four-door coupé is manufactured using a multi-material construction. A roof section is made from carbon along with numerous aluminum components and supporting elements made from high-strength steel. The technology for this automobile was developed in close collaboration with Porsche.

Together with the targeted airflow of the body, large air inlets in the front effectively cool the assemblies, battery and brakes. The hood with its airflow on the surface echoes the brand’s two latest show cars, the Aicon and the PB18 e-tron. It is designed in such a way that the airflow hugs the body, thus reducing undesired swirl.

Separate permanently excited synchronous electric motors are fitted to the front and rear axles. They put down the torque onto the road via all four driven wheels; the new Audi e-tron GT concept is an electric quattro, since there is no mechanical link between the front and rear axle. The electronic control system coordinates the drive between the axles as well as between left and right wheels. That means optimum traction and just the desired amount of slip.

In the future, the vehicle should accelerate from 0 to 100 km/h (0-62.1 mph) in around 3.5 seconds before going on to 200 km/h (124.3 mph) in just over 12 seconds. The top speed is regulated at 240 km/h (149.1 mph) to maximize the range. One feature that not all the competition can match is the option of fully utilizing the drive’s acceleration potential several times in succession. While elsewhere the drive is switched to overdrive for thermal considerations, the Audi e-tron GT concept can provide the driver with the full potential of both motors and the battery because of its sophisticated cooling strategy.

The range of the concept car will be more than 400 kilometers (248.5 mi), determined according to the new WLTP standard. The required drive energy comes from a lithium-ion battery with an energy content of more than 90 kWh, which takes up the entire underfloor area between the front and rear axle with its flat design.

The recuperation system increases the range by up to 30% on Audi electric vehicles. The recuperation involves both the two electric motors and the electrohydraulically integrated brake control system.

Different recuperation modes are combined: manual coasting recuperation using the shift paddles, automatic coasting recuperation via the predictive efficiency assist, and brake recuperation with smooth transition between electric and hydraulic deceleration.

Up to 0.3 g, the Audi e-tron GT concept recuperates energy solely via the electric motors, without using the conventional brake—that covers more than 90% of all decelerations. As a result, energy is fed back to the battery in practically all normal braking maneuvers. The wheel brakes are involved only when the driver decelerates by more than 0.3 g using the brake pedal. The Audi e-tron GT concept features high-performance ceramic disks which also operate with multiple extreme decelerations without compromising braking performance.

The battery in the Audi e-tron GT concept can be charged in several ways: using a cable which is connected behind the flap in the left front wing, or by means of contactless induction with Audi Wireless Charging. Here a charging pad with integral coil is installed permanently on the floor where the car is to be parked, and connected to the power supply. The alternating magnetic field induces an alternating voltage in the secondary coil fitted in the floor of the car, across the air gap. With a charging output of 11 kW the Audi e-tron GT concept can be fully charged conveniently overnight.

Wired charging is much faster as the four-door coupé is fitted with an 800-volt system. This substantially reduces charging times compared with conventional systems that are currently in use. Thus it takes around 20 minutes to recharge the battery to 80% of its capacity, once again providing a range of more than 320 kilometers (198.8 mi) (WLTP). The e-tron GT concept can, however, also be recharged at charging points with lower voltages, providing the driver with access to the entire charging network.

Another joint project of the development departments at Audi and Porsche is the Premium Platform Electric (PPE). It will be the foundation for multiple Audi model families with all-electric drive covering the high-volume B through D segments.

The post Audi e-tron GT Concept Unveiled, Going to Production appeared first on EV Meme.



Source: http://www.evmeme.com/audi-e-tron-gt-concept-unveiled-going-to-production/


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