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Details on all-electric Boxster E prototypes

By SYF77 on 11 Jun 2011

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Porsche announced the development of three pure electric prototypes based on the Boxster roadster in February and shared more information after the demonstration of the Boxster E at the Michelin Challenge Bibendum in Berlin. This project is funded by the government’s “Model Region Electro-Mobility Stuttgart” large scale trial to study the practicality of all electric vehicles for everyday use. These three prototypes include two rear wheel drive units and an all wheel drive version.

Driving force for the four wheel drive model is provided by two independent electric motors that act on the front and rear axles, producing a combined output of 241hp and a maximum total torque of 540 at about 12000 rpm. The rear drive unit includes the motor and transmission, together with the power electronics. It is housed at the location where the manual gearbox and exhaust system are accommodated in the conventional Boxster. The front electric motor takes up the space freed up by the gasoline model’s 64 liter fuel tank. An electric unit synchronizes the two electric motors and controls the drive torque distribution to the front and rear axle. Porsche says the AWD Boxster E can complete the century sprint in 5.5 seconds and reach a limited top speed of 200 km/h.

The two rear wheel drive models discard the electric motor located on the front axle and make do with the rear unit that delivers 121hp and 270 Nm of torque. The RWD Boxster E performs the 0 to 100km/h dash in 9.8 seconds, and has a top speed of 150 km/h.

All Boxster E prototypes are equipped with a 29 kWh lithium-iron-phosphate based battery which weighs at 341kg. It takes up the space occupied by the combustion engine and offers a driving range of around 107 kilometers. The battery can be fully recharged through a conventional socket in approximately 9 hours. According to Porsche, despite the electronic components, there’s enough space left for a luggage in the front storage compartment while the rear luggage space of the Boxster E remains unchanged. On the safety aspect, all Boxster E models are equipped with an Active Sound Design system to provide drivers with acoustic feedback as well as to alert pedestrians and other road users of the car.

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Written by SYF77
I have been a car fanatic since 1989, when my father was changing our family car then to a Toyota Corolla 1.6 GL fitted with a Twin Cam 16 valve engine that was carburetor-fed, a big deal back in those days. The automobile technology and industry fascinates me and I hope to broadcast these interesting developments to everyone out there through this blog.

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