The Porsche 918 Spyder concept combines high-tech racing features with electric-mobility to offer a fascinating range of qualities. For example, it is planned to provide an emission level of just 70 grams of CO2 per kilometer on fuel consumption of only three liters/100 kilometers (equal to approximately 78 mpg U.S.), which is truly outstanding, even for an ultra-compact city car. This car, however, is intended to offer the performance of a super sports car with acceleration from a standstill to 100 km/h in just under 3.2 seconds, top speed of 320 km/h (198 mph), and a lap time on the Nordschleife of Nurburgring in less than 7:30 minutes, faster than even the Porsche Carrera GT.
The Porsche 918 Spyder is one of three Porsche models with hybrid drive making their world debut at the 2010 Geneva Motor Show. This trio – made up of Porsche’s new Cayenne S Hybrid SUV with parallel full-hybrid drive, the 911 GT3 R Hybrid race car with electric drive on the front axle and a flywheel mass battery, and the two-seater high-performance Porsche 918 Spyder mid-engined sports car with plug-in hybrid technology – clearly demonstrates not only the great bandwidth of this new drive technology, but also the innovative power of Porsche as a genuine pioneer in hybrid drive.
The highly-innovative Porsche 918 Spyder concept car combines Porsche’s Intelligent Performance philosophy with the high-technology from motorsport, with classic but modern design to make a truly convincing statement.
Innovative powertrain combines race-bred V8 engine with electric drive
This open two-seater is powered by a high-revving V8 developing more than 500 horsepower and a maximum engine speed of 9,200 rpm – as well as electric motors on the front and rear axle with overall mechanical output of 218 horsepower (160 kW).
The V8 combustion engine is the next step in the evolution of the highly successful 3.4-liter power unit already featured in the RS Spyder racing car and positioned mid-ship, in front of the rear axle, giving the car excellent balance and the right set-up for supreme performance on the race track.
Power is transmitted to the wheels by a seven-speed Porsche-Doppelkupplungsgetriebe (PDK) transmission that feeds the power of the electric drive system to the rear axle. The front-wheel electric drive powers the wheels through a fixed transmission ratio.
The energy reservoir is a fluid-cooled lithium-ion battery positioned behind the passenger cell. The big advantage of a plug-in hybrid is that the battery can be charged on the regular electrical network. A further point is that the car’s kinetic energy is converted into electrical energy fed into the battery when applying the brakes, thus providing additional energy for fast and dynamic acceleration.
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