Porsche 911 GT3 R Hybrid gets more advanced with 20% weight reduction
Porsche has been one of the leaders in hybrid technology for motorsports, particularly with their 918 hybrid race car. Just recently, the Zuffenhausen manufacturer announced that they will be entering the Nurburgring 24-Hour race on June 25, 2011 with their most advanced hybrid race car yet: the Porsche 911 GT3 R Hybrid.
This new race car’s priority is to improve efficiency while reducing weight. As a result, the 911 GT3 R Hybrid weighs 20% less than its predecessor and consumes less fuel.
The general structure was adopted from the 2010 model with two electric motors at the portal axle driving the front wheels while the 4.0L flat-six develops around 470hp. For multiple second bursts at a time, the driver can enable an extra 200hp at their disposal with the electric motors, which were increased from 60 to 75 kilowatts each.
When the motors are not in use, the electric flywheel accumulator will spin up to 40,000 rpm, converting that rotational kinetic energy into electricity, which is stored in a carbon fiber safety cell on the passenger side.
For those who follow the famed Nurburgring race, it will be interesting to see how the Porsches will succeed because of their increased ability to go longer in between pit stops for fuel fill-ups. Audi has had great success with this tactic and their R10 TDI LeMans racer because of its use of a diesel engine, allowing it to have a higher average fuel economy figure than its competitors.
Hit the jump for the press release.
Porsche 911 GT3 R Hybrid:
Porsche Takes on Nurburgring 24 with An Even More Efficient 911 GT3 R Hybrid
Nürburgring 24 hour race
Stuttgart/Atlanta March 17– Porsche AG will enter the Nürburgring 24 hour race on June 25, 2011, with a more advanced version of the Porsche 911 GT3 R Hybrid. The priority for this latest edition was improvement of efficiency through the targeted optimization of hybrid components, which also resulted in a 20 percent weight reduction. Version 2.0 of the 911 GT3 R Hybrid is intended to achieve the same lap times as its predecessor but with less fuel consumption.
The general layout of the hybrid was adopted from the 2010 model. A portal axle with two electric motors drives the front wheels and supplements the four-liter – depending on the balance of performance classification – approximately 470 hp, six-cylinder boxer engine at the rear. The output of both electric motors has increased from 60 to 75 kilowatts each. For bursts of multiple seconds at a time, drivers now have almost an additional 200 hp at their disposal with the 911 GT3 R Hybrid 2.0. Depending on the programming, this power is automatically activated through use of the throttle pedal. Moreover, pilots can manually call up this extra power, for instance when overtaking.
The electric flywheel accumulator, with its rotor spinning up to 40,000 rpm and storing energy mechanically as rotational energy, is now housed with the other hybrid components in a carbon fiber safety cell on the passenger’s side.
At first glance, the new GT3 R Hybrid is clearly distinguishable from the 2010 model. Thanks to the optimization of the hybrid system’s high voltage components, the large louvers in front of the rear fenders were no longer necessary. This reduces drag and also lowers fuel consumption. All in all, the weight of the vehicle decreased from 1,350 to 1,300 kilograms.
“We’ve collected a great deal of information from our races on the Nürburgring, at the ALMS race at Road Atlanta, as well as from the ILMC race on China’s Zhuhai circuit. The data was invaluable for the further development of our racing laboratory,” says Hartmut Kristen, head of Porsche motorsport. “The emphasis of our work was on improving efficiency. That means we want to keep the lap times consistent with 2010 but use less energy, hence less fuel. In this way, we support future developments of road-going, sporting hybrid vehicles.”
The cockpit of the 911 GT3 R Hybrid has also been completely revised. Most of the displays and controls have moved to the steering wheel. Drivers can operate the rest of the functions via backlit buttons now situated on the centre console. Priority was placed on the ergonomics and the clear layout for pilots – particularly in darkness.
The new 911 GT3 R Hybrid is a perfect example of the ‘Porsche Intelligent Performance’ philosophy, a principle found in every Porsche – more power on less fuel, more efficiency and lower CO2 emissions – on the race track and on the road.
– By: Chris Chin