Porsche 918 Spyder

On the eve of the Geneva Auto Show, the Stuttgart-based company took the wraps off the 918 Spyder Concept, a 2-seat mid-engine supercar with hybrid and electric drive technology.

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The 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 N ̧rburgring in less than 7:30 minutes, faster than even the Porsche Carrera GT.

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Four distinct driving modes are available. E Drive is solely electric power, with a range of up to 16 miles. In Hybrid mode, electric power and gasoline power are used as conditions warrant, in ways designed to maximize economy or performance. In Sport Hybrid mode, in which both drive systems maximize performance, most of the power goes rearward, aided by torque vectoring to help the car’s dynamics. Lastly, there’s Race Hybrid mode for the utmost performance, such as running at the limit on the racetrack. In this mode, there’s even a “push to pass” E-Boost feature that feeds in added electrical power for overtaking… or better lap times.

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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 ñ as well as electric motors on the front and rear axle with overall mechanical output of 218 horsepower (160 kW).

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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.

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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.

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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 carís 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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Lastly, the 918 Spyder Concept is fitted with a Range Manager. Using the map in the satellite navigation system, the Range Manager displays the remaining range the Spyder is able to cover. And in cities, it will tell you if you can reach your destination on electric power alone. Just the thing to make sure you arrive at the Nürburgring with a full tank.

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  1. [...] lithium polymer batteries are split between the center tunnel and a box mounted behind the cockpit, and can provide a [...]

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