2011 Detroit Auto Show- Porsche 918 RSR
Porsche has presented at this year’s Detroit Auto Show its new concept, Porsche 918 RSR, with the same drive-train as 911 GT3 Hybrid, but with improved engine and performance.
Porsche 918 RSR has a 6.2 l V8 engine at 10,300 rpm and a power of 767 combined hp by 2 electric engines.
This concept is all made of carbon fiber reinforced plastic.
See more on Press Release:
’Porsche 918 RSR – Racing laboratory with even higher-performance hybrid drive
Dr. Ing. h.c. F. Porsche AG, Stuttgart, is continuing to extend its performance and high efficiency competence via intensive development work in the field of hybrid technology. With the Porsche 918 RSR, the manufacturer of sporty premium vehicles is presenting a high-end synthesis of 2010’s successful hybrid concepts. The two-seater mid-engine coupé 918 RSR clearly reveals what happens when the technology fitted in the 911 GT3 R hybrid and the design of the 918 Spyder are transferred to a modern, innovative super sports car.
With its highly-efficient flywheel accumulator, the 911 GT3 R hybrid racing car proved to be an attention magnet during competition racing on the Nürburgring Nord schleife circuit, during the American Le Mans Series races (ALMS) in Road Atlanta/USA and the ILMC run in China’s Zhuhai. It demonstrated its massive performance potential under realistic motor racing conditions against top competitors. The 911 GT3 R Hybrid, referred to internally as the “Race Lab” actually surpassed the high expectations of Porsche Motorsport. Competi tive ness, high reliability and exemplary fuel efficiency combined with top performance underscored the Porsche technicians’ basic idea of generating additional power in an intelligent manner.
The 911 GT3 R Hybrid obtains its additional power from its own vehicle dynamics when braking. Porsche is now transplanting this technology into the mid-engine coupé 918 RSR, the motor sports version of the 918 Spyder concept car.
Motor racing technology also dominates within the particularly light, torsionally stiff carbon fibre reinforced plastic (CFRP) monocoque. The V8 engine is a further development of the direct injection engine from the successful RS Spyder race car and now offers an output of precisely 563 hp at 10,300 rpm in the 918 RSR. The electric motors on the two front wheels each contribute 75 kW, i.e. a total of 150 kW, to the peak drive power of exactly 767 hp.
This additional power, which is generated during braking, is stored in an optimised flywheel
In the 918 RSR, the two electric motors offer a torque vectoring function with variable torque distribution to the front axle. This additionally increases agility and improves steering response. Mounted upstream of the rear axle, the mid-engine is integrated with a racing transmission also based on the RS Spyder race car. This further developed six-speed constant-mesh transmission with longitudinally mounted shafts and straight-toothed spur gears is operated using two shift paddles behind the racing steering wheel.