Car Barn Sport | Audi R8 e-tron Concept (2013) | Audi R8 e-tron shows that electric mobility can be emotionally and dynamic. His two electric motors, high-energy battery 48.6 kW, developed 280 kW (380 hp) and 820 Nm (604.80 pounds-ft) of torque. They accelerate high-performance sports car from 0 to 100 km / hr (62.14 miles / h) in 4.2 seconds and a top speed of 200 km / hour (124.27 miles / h). The battery is good in a radius of 215 km (133.59 miles). With the R8 e-tron Audi has skills that benefit their production models are electrified, are developed. Audi R8 e-tron weighs only 1780 kg (3,924.23 lb). His body construction including side panels weighs 199 kg (438.72 pounds) 23 kg (50.71 pounds) less than R8 coupe, which sets high standards, with its principle of aluminum ASF (Audi Space Frame) is based. Here, Audi is presenting a new phase in the development of light-weight technologies - multi-material space frame, a large portion of the polymer, carbon fiber reinforced plastic (CFRP) complement the aluminum frame. CFK components bear 23 percent and 75 percent of the metal parts by the weight of the shell, different products rest. The front structure of the R8 e-tron is a classic design with aluminum.
For struts and rear, reducing a new concept of the sandwich weighing 11.5 kg (25.35 pounds). The battery has a 530 flat prismatic cells. In the form of T, the battery of 235 centimeters (92.52 inches), 135 cm (53.15 inches) and the control unit is on, 71 cm (27.95 inches) in height shot. Plates 12 mm (0.47 inch) aluminum alloys with high individual stages which form the supporting structure of the battery. Management system from the battery to the switches and fuses high performance in the terminal box that is located on the traction battery. It also determines the state of charge of the battery and the output of the high voltage and sends the values to the control of electric motors. To do this, access the management system of the battery, for example, the internal electronics-cell battery, voltage and temperature gage cell. When the battery drops to a threshold of 15 percent SOC (state of charge), the controller reduces the amount of electrical energy that can be extracted from the battery.
Charging the battery on the road through energy recovery during recessions. Rate is particularly high during the braking, and about 0.3 g of electric motors in general handled independently delayed Two electric motors on the rear axle of the manual R8 e-tron electric torque control, braking and acceleration for different audiences wheel torque distribution for the request in the fast corners. Is a total of 280 kW and 820 Nm (604.80 pounds-ft) available, electric motors virtually extinct offers impressive performance Audi R8 e-tron. In the test cycle, the battery bank is enough to drive more than 215 km (133.59 miles). Design of a permanent magnet synchronous motor, high power and torque density and can work efficiently in a small amount of energy. Stator temperature is controlled by a water jacket, and the air is cooled by an additional air stream. Each motor is driven by a separate power electronics that controlled temperature. The concept of redundancy developed transmission control to meet the highest possible standards and safety - Power electronic controls interact with each other and with a variable speed. Chassis Audi R8 e-tron, but also offers new solutions. Rear forged titanium, saves 0.6 kilograms (1.32 pounds) in weight. Audi R8 electrons and 225/35 and 275/35, a higher rolling resistance of the tire. The brakes on the wheel electromechanical brakes rear screw. Ball screws with electrical control and monitoring ("by wire"), press firmly against the speed of lightning. This hydraulic braking is required on the front wheels, two vacuum pumps create a vacuum. Here are the carbon ceramic discs fiber. For one turn, drove a sports tires for a top speed of 250 km / h (155.34 miles / h), and uses standard tires with a limit of 200 km / h (124.27 miles / h) speed two-shift operation. The drag coefficient is a high-performance sports car is powered electrically Cd = 0.27. High-performance sports car with electric drive no oil cooler, or the need for the air intake. It passes through the channel structure on the front and back of the front cover. In the form of a heat pump receives Audi thermal management solution for high-performance R8 e-tron is very useful for future production models. A very complex system retains all the key elements of the transmission - batteries, electric motors, transmissions and power electronics - the ideal temperature. A heat pump according to the principle of a conventional cooling circuit. A new component includes cooling elements (the heat transfer between two fluids control) to the condenser / evaporator and the control of the electrically powered heating means, additional air valve.
With electric power of 1 kW, can be up to 3 kW of heating. If the system works as a heat pump air heat from the air. At low temperatures, the heat pump uses heat from the engine and the high-voltage battery by special evaporators, coolers, cooling devices at the same time. Heating control is generally heated to an internal motion of the stored thermal energy to the liquid refrigerant in the fresh air supply PTC electric heater is only required if the maximum heating rate. Interior of the Audi R8 e-tron is an elegant surfaces of carbon fiber, soft leather and Alcantara. Sport bucket seats have a carbon fiber chassis, each of which 17.6 kilograms (38.80 pounds) weighs. Large power meter that level of output power and energy recovery on a scale of 0 to 100 percent. Digital Mirror is another innovation in the Audi R8 e-tron. High-resolution 6.8-inch screen, takes AMOLED technology (Active Matrix Organic Light Emitting Diode), the place of the rear view mirror. Small camera, the high performance in a wide field of view and high sensitivity. AMOLED screen offers only 7 mm (0.28 inch), ten times the difference between 30 percent more energy efficient than LCD.
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