2013 Porsche Sport Cars Prototype 918 Spyder


2013 Porsche Sport cars Prototype 918 Spyder “Race Hybrid” is the mode for the highest possible performance and especially sporty dri -ving style. The combustion engine is chiefly used under high load, and charges the battery when the driver is not utilising the maximum output. The electric motors provide additional support as necessary in the form of a boost when the driver requires even more power. The electric motors are used up to the maximum power output limit in order to provide the best possible performance for the race track. In this mode, the battery charge state is not kept constant, but instead fluctuates across the entire charge range. In contrast to Sport Hybrid mode, the electric motors run at their maximum power output limits for a short time, thus ensuring better boosting. This increased output is balanced out by the combustion engine charging the battery more powerfully.
The main source of propulsion is the 4.6-litre, eight cylinder engine delivering more than 570 hp of power, which was directly derived from the power unit in the successful RS Spyder and explains why it delivers engine speeds of up to 9,000 rpm. Like the RS Spyder’s racing engine, the 918 Spyder power unit features dry-sump lubrication with a separate oil tank and oil extraction. In order to save weight, the four extraction pumps are made of plastic. Further extensive lightweight design measures resulted in.

The 2013 Porsche Sportcars Prototype 918 Spyder’s multi-link chassis is inspired by racing car construction, comple -mented by additional systems such as the adaptive shock-absorber system PASM and rear-axle steering. Basically, this comprises an electro-mechanical adjustment system on each rear wheel. The adjustment is speed-sensitive and executes steering angles of a few degrees in each direction. The rear axle can therefore be steered in the same direction or the opposite direction to the front wheels. At low speeds, the system steers the rear wheels in the opposite direction to the front wheels. This makes cornering even more direct, faster and more precise, and reduces the turning circle. At higher speeds, the system steers the rear wheels in the same direction as the front wheels. This minimises the “pushing” of the vehicle’s rear end when changing lanes quickly. The result is very secure and stable handling. The exhaust system is racing car inspired, with short muffler pipes that come out of the top of the car’s rear end, next to the engine. The seven-speed PDK dual-clutch automatic transmission has been fitted upside-down to lower the 1700kg car’s centre of gravity. It also has rear-axle steering for better control through slow corners.
All that technology is expected to come at a price, though. Estimates suggest the 2013 Porsche Sportcars Prototype 918 Spyder could cost upwards of $750,000. As to be expected, the plug-in hybrid sports car will command a princely price tag, which Porsche has indicated will start at $845,000.
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