Audi to offer new R8 e-tron EV on request; almost 2x pack capacity, 280-mile range with new Li-ion technology (update 1)
Audi is presenting the second generation of its high-performance R8 sports car at the upcoming Geneva show, featuring new V10 engines, newly developed quattro drive, and a new multimaterial Audi Space Frame (ASF) combining aluminum and carbon fiber reinforced plastics (CFRP). The top of the range version delivers 449 kW (610 hp), achieving 0 to 100 km/h (62.1 mph) in 3.2 seconds, with a top speed of 330 km/h (205.1 mph).
The second generation of the Audi R8 also forms the basis for two more models, including a high-performance battery-electric version, the R8 e-tron 2.0. This latest evolution of the vehicle takes up the multimaterial Audi Space Frame from the new series-production model. The new R8 e-tron, which will be available for order in 2015 upon customer request, uses a newly developed high energy density lithium-ion technology which was specially conceived for a purely electric vehicle drive. In comparison to the first technology platform (earlier post), the battery capacity has grown from 49 kWh to approximately 92 kWh—without changing the package.
|Audi R8 V10. Click to enlarge.|
As a result, the new 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 new liquid-cooled battery pack comprises 52 modules.|
|Additionally, Audi improved the overall vehicle electrical system and overall energy management from the first generation R8 e-tron.|
|In the two power electronics systems and the electric motors on the rear axle, Audi also achieved considerable gains in efficiency.|
Audi produces the high-voltage battery itself. 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.
The power is now twice 170 kW and the maximum torque twice 460 N·m (339.3 lb-ft). The R8 e-tron 2.0 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.
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.
Due 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.
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.
Audi did not announce pricing for the new R8 e-tron; however, the V10 models start at €165,000 (US$185,000).