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A further developed version of the Porsche 911 GT3 R Hybrid will take on the Nürburgring 24 hour race on June 25. During development, Porsche prioritized efficiency via the targeted optimization of hybrid components, which also led to a 20% weight reduction. It’s expected that version 2.0 of the 911 GT3 R Hybrid will be able to achieve the same lap times as its predecessor but with less fuel consumption. The hybrid’s general layout was taken from the 2010 model. The front wheels are driven by a portal axle with two electric motors and supplements the four-liter. Its six-cylinder boxer engine at the rear delivers around 470hp, depending on the performance details. Both electric motors can now deliver 75 kilowatts each, from 60 kilowatts previously.

With the 911 GT3 R Hybrid 2.0, pilots can have additional power of nearly 200hp that they can use for seconds at a time. Depending on the programming, this power can be automatically activated with the use of the throttle pedal. In addition, pilots can manually engage this extra power, when overtaking for example.

At a carbon fiber safety cell on the passenger's side is where the electric flywheel accumulator, with its rotor spinning up to 40,000 rpm and storing energy mechanically as rotational energy, is located. The accumulator is place there along with the other hybrid components. At a glance, the new GT3 R Hybrid can be clearly differentiated from the 2010 model. The large louvres in front of the rear fenders were no longer needed due to the optimization of the hybrid system's high voltage components. This lessens the drag and fuel consumption. The vehicle also weighs less, from 1,350 to 1,300 kilograms.[via - 4wheelsnews]

2011 Porsche 911 GT3 R Hybrid Version 2.0