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- Porsche 911 test under race conditions
Stuttgart. The development of the Porsche 911 GT3 R Hybrid 2.0 is running at full revs.
Today, on April 30th, the further-developed version of the innovative Hybrid race car contests round two of the Nürburgring Long Distance Championship (VLN).
Another test under race conditions is planned at the fourth VLN round on 28 May.
At the race debut of the modified version of the 911 GT3 R Hybrid on 30th April, Porsche works drivers Joerg Bergmeister (Germany), Marco Holzer (Germany) and Patrick Long (USA) share driving duties in the orange and white ‘race lab’.
At the second race meeting in late May, Holzer and Long join forces with Richard Lietz (Austria) to pilot the Hybrid-911.
24h Nürburgring, Nürburgring 24 hour race
Porsche takes up the Nürburgring 24 hour race on 25 June with a further developed version of the Porsche 911 GT3 R Hybrid.
Priority in the further development over winter was placed on increasing efficiency. For this, the weight of the vehicle, including the hybrid components, was reduced from 1,350 to 1,300 kilograms. The weight of these components was reduced by 20 percent through targeted optimisation. The general hybrid layout was adopted from the 2010 model.
The output of both electric motors in the portal axle increased from 60 to 75 kilowatts each. For seconds at a time, pilots now have about 200 hp more at their disposal with the 911 GT3 R Hybrid 2.0, which equals ca. 23 kW (32 hp) of additional conventional power per Nordschleife lap. Depending on the programming, this electrical power is automatically activated through use of the throttle pedal. Moreover, the hybrid pilots can manually call up this extra power, for instance when overtaking.
Instead of the batteries used in hybrid road cars, an electrical flywheel power generator fitted in the cockpit beside the driver delivers energy to the electric motors. Compared to a battery, the flywheel generator has the advantage of storing and delivering high amounts of energy considerably quicker.
Charged by kinetic energy created under braking and capable of operating at speeds of up to 40,000 rpm, the flywheel is used in place of a conventional battery to provide electrical energy to a pair of 75-kilowatt motors mounted within the front axle assembly and propelling the front wheels — a layout that effectively provides the 911 GT3 R Hybrid with four-wheel-drive capability.
Thanks to its sophisticated electronic control, the innovative hybrid drive of the 911 GT3 R Hybrid automatically provides optimal efficiency at racing speed. The combination of the combustion engine and electric motors fulfils a simple objective: Less fuel consumption without compromising performance. When overtaking or accelerating out of a bend, the driver can manually override the controls by pressing the boost paddle on the steering wheel and sending energy from the charged flywheel generator to the front axle. This additional power of 120 kilowatts is available to the driver after each charge process for approximately six to eight seconds.
photogallery: Porsche 911 GT3 R Hybrid test at at Nürburgring Long Distance Championship
video: Porsche 911 GT3 R Hybrid test at at Nürburgring Long Distance Championship