One of the highlights in the ongoing Frankfurt Motor Show is the Audi electric concept. The Audi Concept is called the A2 and it has all the elements of a roadster and racecar, fun car and city car. It has 480 kilograms allowing for seating for two individuals, with a sliding roof for entry that can remain open for sun while on the road.
According to the company, the technological innovations are geared for individuals who are interested in the technology and are interested about new designs appropriate for their age and status. The specific target market are those urbanites whose lifestyle reflects modernity as well as driving acumen.
The A2 concept car is made of carbon fiber reinforced polymer (CFRP) with the car’s driver cockpit is a CFRP monocoque with an aluminum structure. This full construction makes it ultra lightweight with a low curb weight of 480 kg. The wishbone suspension is a combination of CFRP and aluminum located with freestanding 21 inch wheels.
The car used cladding technology allowing 21 inch wheels are very light with a variant of the blade design from the Audi e-tron models. Overall, the car’s wheel measurements are 125/60 for the front wheels and 145/50 for the back wheels. The vehicle also uses pushrod technology, allowing for four disc brakes for more stopping power, similar to what is used in Formula One cars. As a result, the turning circle measures in at nine meters, which is deal for city streets. The steering does not need extra power because of the low weight of the vehicle.
For safety, there are crumple zones both at the front and rear areas with two airbags for a greater degree of passive safety. There is also an assistance system assisting the driver to avoid pedestrians and other road hazards.
The A2 car’s battery is mounted behind the seats and the 90 kg lithium-ion battery is able to store 7.1 kWh of electrical energy. The vehicle’s electric motors produce 15 kW of continuous power and 47 Nm of torque. The motors have single speed transmission and mounted behind the rear wheels. The vehicle can accelerate from 0 to 100 km/h in 16.9 seconds and is able to reach 60 km/h in six seconds. The driving range is about 45 miles and a full recharge can be obtained in 20 minutes using a 400 volt three phase current and an hour with a 230-volt household current.
Audi has also introduced Audi Wireless Charging (AWC). This new concept allows for contactless induction charging, which uses a coil and an inverter (AC/AC converter). When the vehicle is placed in a parking lot with a special plate connected to the power grid, the 3.6 kW primary coil set on the plate generates a high-frequency alternating field thus charging the car’s battery through an alternating magnetic field that induces an alternating current across the air gap in the secondary coil in the vehicle. Only when the vehicle is directly over the plate can the process occur and the coils are specific to one another.