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E-Porsche comes in 2009, paper says

October 13, 2008 | | 211200115
Electric drives have a property that makes them interesting for sports car manufacturers: They offer an incredible torque even at low speeds. Now Porsche apparently is planning to join the electric bandwagon.

MUNICH, Germany — Electric drives have a property that makes them interesting for sports car manufacturers: They offer an incredible torque even at low speeds. Now Porsche apparently is planning to join the electric bandwagon.

The Stuttgart, Germany, based car manufacturer plans to offer an electric version of its famous model 911, writes weekly magazine Wirtschaftswoche. According to the publication, the engine will be provided by Alois Ruf, a small specialty sports car manufacturer. The e-Porsche will be equipped with a 204 kW brushless three-phase motor which will catapult the car to a speed of 100km/h in less than 7 seconds. The motor will offer a torque of 650Nm; the lithium ion batteries from British manufacturer Axeon provide for a driving range of up to 320 km, depending greatly on the driving style. At a moderate speed of 125 km/h, the batteries have to deliver 21 kilowatts of electric power.

For the first time, details as to the battery lifetime in such an application have been provided. The 550kg heavy energy source can be recharged up to 3000 times. The self-discharge is specified at less than 3 percent every month.










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