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Version 2.0 of Porsche 911 GT3 R Hybrid with flywheel energy storage to start at Laguna Seca

Porsche Motorsport announced the entry of the 911 GT3 R Hybrid Version 2.0 (earlier post) in the ModSpace American Le Mans Series Monterey presented by Patrón. The six-hour race on 17 September at Mazda Raceway Laguna Seca is the eighth round of the 2011 American Le Mans Series presented by Tequila Patrón.

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Components of the hybrid system are tinted in red. Click to enlarge.

This will mark the second test under race conditions of the new version of the hybrid racer. (The first was the Nürburgring 24 hours.)The vehicle is not eligible for championship points, as the hybrid technology is not yet a part of the GT regulations.

The Porsche 911 GT3 R Hybrid 2.0 features two 75 kW electric motors on the front axle supplementing the 465 hp (347 kW) four-liter, six-cylinder power unit at the rear. The first version of the hybrid used two 60 kW motors in the front to supplement a 480 hp (358 kW) four-liter unit in the rear.

The electric energy is generated during braking and stored in an electric flywheel in the 911 GT3 R Hybrid 2.0, which has undergone further development since 2010. During acceleration, this energy is automatically delivered to the front wheels, supporting the combustion engine. This leads to a reduction in fuel consumption and increases the cruising range on the circuit. Moreover, drivers can manually utilize the stored energy with a boost-paddle on the steering wheel for overtaking.

Compared to its predecessor, the weight of the 911 GT3 R Hybrid was reduced from 1,350 to 1,300 kilograms.

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