Audi R8 еTron 2012

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Audi R8 eTron is a high-performance sports car with electric propulsion. Four electric motors, two in front and two in the back, are connected to the wheels. With a maximum output of 230 kW, 313 hp and  600 Nm torque, the Audi R8 eTron accelerates from 0 to 100 km / h in 4.8 seconds. The maximum speed of the sporty electric car is limited at 200 km / h.

With the newest technology incorporated into every detail of the car, this car is of very high quality. A liquid cooled lithium-ion battery and power electronics are located directly behind the passenger seat.

This arrangement contributes to an optimal centre of gravity and weight distribution between the front and read axles. The 550-pound lithium-ion battery in the R8 eTron consists of a large number of individual cells with high energy density, which are connected together. The battery provides enough power to cover about 250 kilometers, or 155 miles, according to the NEDC cycle.

When the battery is completely drained, it takes between six and eight hours to charge with a voltage of 230V. With heavier current, the process takes about two and a half hours. The battery incorporates technology called regenerative braking, that allows the battery to recharge whenever braking or decelerating, extending the battery life of the car.

The rear axle provides around 70 percent of the torque in normal working conditions. The Audi eTron incorporates lateral dynamics using the four motors. Selective acceleration of individual wheels and active torque distribution are perfectly calculated.

Under steer and over steer can be precisely offset with small increases in power and braking interventions. Systematic lightweight construction is particularly important for electric vehicles. The body of the Audi R8 eTron is aluminium, designed with the Audi Space Frame technology and weighs less than 200 kg. It helps the high performance sports car weigh a mere 1,500 kilograms.

   
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