While Porsche and the Porsche Team Manthey celebrated their fifth victory at the traditional 24-hour race in the last six years after holding a lead in the 911 GT3 RSR for 16 hours and 35 minutes, one of the team’s other entries, the Porsche 911 GT3 R Hybrid, also gave an impressive performance, even though its second start at the 24-hour classic did not yield the anticipated top result.
Fielded by Porsche Team Manthey with Porsche works drivers Joerg Bergmeister (Germany), Richard Lietz (Austria), Marco Holzer (Germany) and Patrick Long (USA), the innovative race car with its ground-breaking drive concept finished an impressive 28th after a breath-taking chase through the field, 17 laps behind the winner.
Showing its true potential, the 911 GT3 R Hybrid moved into the lead on Saturday’s race about four hours after the start. But a broken flange in the differential sent it into the pits for repairs, which cost six laps to the leader. But the trouble wasn’t to stop there: After a good seven hours, the same problem struck again necessitating a second unplanned pit stop. This time repairs took 40 minutes.
With a ten-lap gap to the front-runners, the 911 GT3 R Hybrid rejoined the race in position 105. Clocking lap times which were sometimes faster than those at the front, it ploughed through the field to rank 23rd. However, on Sunday morning the vehicle’s charge was interrupted yet again: While lapping a slower competitor, Patrick Long was nudged and spun at high speed in the Flugplatz passage. In the pits, however, no damages to the vehicle were found, enabling the team to set out again and reach the finish line.
Extra boost for overtaking
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-litre, 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 seconds at a time, pilots 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 fibre safety cell on the passenger’s side.
Talking ahead of last Saturday’s race, Hartmut Kristen, head of Porsche motorsport, said:“We’ve collected a great deal of information from our races on the Nürburgring, at the ALMS race at Road Atlanta in the USA, as well as from the ILMC race on China’s Zhuhai circuit, which was an invaluable help for the further development of our racing laboratory. 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 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.
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