2016 Audi R8 e-tron
The Audi R8 e-tron made its first appearance at the 2009 Frankfurt Show. Audi produced 10 prototypes of the car over the next few years, then ultimately pulled the plug on the project in 2013 due to the car's limited range of 134 miles. Last year, Audi decided to move forward on the project again thanks to advances in battery technology.
The new e-tron is a far more practical vehicle than the first. The range has roughly doubled to an impressive 280 miles, with the vehicle's energy density increasing from from 84 Wh/kg to 154 Wh/kg. What is more is that a Combined Charging System on board the car allows use of both direct and alternating current, and allows the battery to be charged in significantly less than 2 hours.
Power is a substantial 456 hp. While less than either V10 variant of the new R8, it is still good for a 0-62 mph time of 3.9 seconds.
| ---- Specifications ---- | |||||
| Price | -- | Production | -- | ||
| Engine | electric | Weight | -- | ||
| Aspiration | -- | Torque | 679 lb-ft | ||
| HP | 456 hp | HP/Weight | -- | ||
| HP/Liter | -- | 1/4 mile | -- | ||
| 0-62 mph | 3.9 seconds | Top Speed | -- |
(from Audi Press Release) Electrified: Audi R8 e-tron
The second generation of the Audi R8 forms the basis for two more models. Audi has made major engineering developments in its high-performance electric sports car, the R8 e-tron. The latest evolution of the vehicle takes up the multimaterial Audi Space Frame from the new series-production model.
The supporting structure was enhanced by a CFRP rear-section module comprising the luggage compartment. The walls of the CFRP luggage compartment well are corrugated. This way, in the event of a rear-end collision, more energy can be absorbed despite the reduced material weight.
Thanks to targeted modifications to the outer shell and on the wheels, the Audi R8 e‑tron achieves an aerodynamic drag coefficient (cd) value of 0.28. In terms of performance and range, the car enters entirely new dimensions.
The large T-shaped battery is structurally integrated into the center tunnel and behind the occupant cell – optimally positioned in the car. It supports the dynamics of the R8 e-tron with its low center of gravity. Audi produces the high-voltage battery itself, for the first time based on a newly developed lithium-ion technology which was specially conceived for a purely electric vehicle drive. In comparison to the first technology platform, the battery capacity has grown from 49 kWh to approximately 92 kWh. This progress was possible without changing the package.
The R8 e-tron achieves an electric range of 450 kilometers (279.6 mi) instead of a previous 215 kilometers (133.6 mi) with an energy density that has been increased from 84 Wh/kg to 154 Wh/kg and some other modifications to the car. The electrically powered high-performance sports car has the Combined Charging System (CCS) on board, which allows charging with direct and alternating current. Using this system, it is possible to fully charge the battery in significantly less than two hours.
The power is now twice 170 kW and the maximum torque twice 460 Nm (339.3 lb-ft). The R8 e-tron accelerates from 0 to 100 km/h (62.1 mph) in 3.9 seconds on its way to an electronically restricted top speed of 210 km/h (130.5 mph) or 250 km/h (155.3 mph). Intelligent energy management and an electromechanical brake system enable high energy recuperation rates. Targeted torque vectoring – needs-based distribution of power transmission between the rear wheels – ensures maximum stability and dynamism.
Audi uses the electrical high-performance sports car primarily as a mobile high-tech laboratory. Accordingly, the findings from the R8 e-tron help in creating a vehicle with a sedan character. Upon customer request, the R8 e-tron will be available for order in 2015 as an electrically powered sports car in supreme hand-built quality.