Audi’s futuristic A2 concept has been confirmed to be the third all-electric Audi design study to take the center stage for the Vorsprung durch Technik brand at the 2011 Frankfurt Show. This four-seat A2 concept, a purely electric vehicle, is similarly ahead of its time just like the two other radical-styled urban concept electric studies.
It has a remarkably space-efficient and lightweight packaging which has been achieved with state-of-the-art multi-material hybrid construction. Its futuristic specification includes a semi-autonomous running mode, LED matrix lighting technology, ‘by-wire’ steering and braking and contact-free battery charging.
Advanced Audi ultra-lightweight construction methods limit the weight of this latest innovative study to just 1,150kg. It unites hybrid multi-material construction, marking the first time for very different materials to be combined using the Audi Space Frame (ASF) construction principle.
The superstructure is generally made from aluminum, complemented by add-ons in Carbon Fibre-Reinforced Polymer (CFRP). The concept has 18-inch alloy wheels which shave off about 2kg each versus the traditional variants, thanks to cladding technology which greatly decreases the amount of material used. Mounted in its sandwich floors is a lithium-ion battery that stores 31 kWh of energy, 24 kWh of which is usable.
Transversely fitted in the front is an electric motor that delivers 116PS of peak power (80PS continuous) and 270 Nm of torque (160 Nm continuous) to the front tires through a single-speed transmission. This power output allows a 0-62mph acceleration time of 9.3 seconds with a top speed of 93mph.
The speed is electronically limited to achieve a driving range of 124 miles based on the European driving cycle test. It takes about 1.5 hours to fully recharge the battery with 400 volt three-phase current. With 230 volt household current, charging will take around four hours. The A2 concept is also designed for the new contact-less charging technology dubbed as the Audi Wireless Charging.
"The charging socket and the cooling water connection are concealed at the front of the car behind the upper portion of the single frame grille. The lower section of the grille acts as an air inlet, and incorporates highly efficient cooling elements made of graphite foam. The lightweight mineral is an excellent conductor of heat from the water to the ambient air. Eight blocks with six graphite elements each are located in the central air inlet." said the press release.