The two-seater accelerates from 0 to 100 km/h (0 – 62.14 mph) in 4.8 seconds, and from 60 to 120 km/h (37.28 – 74.56 mph) in 4.1 seconds. The top speed is limited to 200 km/h.
The water-cooled lithium-ion battery provides 42.4 kilowatt hours to enable a range of approximately 248 kilometers. It is located directly behind the passenger cabin for an optimal center of gravity and axle load distribution.
The energy storage unit is charged with household current (230 volts, 16 amperes) via a cable and a plug.
The full-charging time is between 6 and 8 hours. A high voltage (400 volts, 63 amperes) reduces this to just around 2.5 hours.
The e-tron is able to freely distribute the torque of its four electric motors to the wheels as required. This so-called torque vectoring allows for excellent dynamics and a high level of agility and precision when cornering.
The drive system, the power electronics and the battery are controlled by a thermal management system that contributes to the car’s range without compromising the level of interior comfort.
The electronic brake system features lightweight ceramic brake discs and brake energy recovery.
Similarly to a mid-engined sports car, about 70 percent of the power goes the rear and 30 percent to the front.
The chassis has motorsports-derived triangular double wishbones at the front axle and trapezoidal wishbones made of forged aluminum components at the rear axle.
Audi e-performance project
Audi has established a project house dedicated to electric driving; it will shortly begin work on a project sponsored by the German federal government. The working group and the project bear the same name: e-performance.
The car battery is the focal point of the studies, which cover such topics as thermal management, capacity, package, weight, safety, service life and integration into the vehicle’s heat and energy flows.
“We are not working on cell chemistry – we are relying on our strategic partners for that,” says Dr. Korte, “but the battery management software will be our know-how.”
In an electric car, the entire on-board electrical system needs to be completely restructured.
Many components that today use the energy and waste heat of the combustion engine — from the power steering to the heater — need a new source of power.
The electric motor, the power electronics with their high-voltage components, inverters and transformers as well as the durability of the chips under the demanding conditions in the car are other important fields of work.
Audi is also studying all other areas of the vehicle. Topics include the flow of forces in the drivetrain, the climate control system, the controls and displays in the cockpit, the vehicle acoustics and the chassis. In this last field, electrically actuated brakes and suspension struts offer great potential.
Audi e-tron Concept – Official Videos