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Porsche video: Electric Porsche Boxster E Driving experience

May 24, 2011 by porsche Leave a Comment

  • Porsche video
  • Electric Porsche
  • Porsche Boxster E
  • Porsche driving experience

Driving experience of the new Electric Porsche Boxster E from the Challenge Bibendum event. The vehicle was driven by Günther Höchsmann, Senior Engineer at Porsche

Enjoy this Porsche video

 

 
More details about new Electric Porsche Boxster E you can read there:  New Details on Electric Porsche Boxster E RWD and AWD Prototypes

Filed Under: Porsche Video Tagged With: electric porsche, Porche Boxster, Porsche Video

New Details on Electric Porsche Boxster E RWD and AWD Prototypes

May 24, 2011 by porsche 3 Comments

  • Porsche news
  • Electric Porsche Prototypes
  • Porsche Boxster E

2012 Electric Porsche Boxter EBack in February, Porsche announced the development of three pure-electric prototypes based on the Porsche Boxster roadster, but aside from a single photo and the fact that the electric motors could produce up to 180kW/241HP, the Stuttgart-based automaker did not release any other details on the cars.

After the demonstration of the Porsche Boxster E, the company decided to share more information on the test cars that are being used as part of the government-funded “Model Region Electro-Mobility Stuttgart” large-scale trial to study the everyday practicality of all-electric vehicles. Of the three Boxster E prototypes, two are rear-wheel drive and one is all-wheel drive.

Propulsion 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 180 kW / 241HP and a maximum total torque of 540 Nm / 398 lb-ft at approximately 12,000 rpm

The rear drive unit includes the motor and transmission, together with the power electronics and is located where the manual gearbox and exhaust system are accommodated in the conventional Boxster, while 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 0-100km/h (62mph) sprint in 5.5 seconds and reach a limited top speed of 200 km/h (124 mph)

The two rear-wheel drive models of Porsche’s prototype simply discard the electric motor located on the front axle and make do with the rear unit that delivers 90 kW / 121HP and 270 Nm / 199 lb-ft of torque. The RWD Boxster E can dash from a standing start to 100 km/h (62 mph) in 9.8 seconds, and has a top speed of 150 km/h (93 mph).

2012 Electric Porsche Boxter EAll Boxster E prototypes are equipped with a 29 kWh lithium-iron-phosphate based battery, which takes up the space of the combustion engine and offers a driving range of around 107 kilometers / 107 miles. The battery weighs in at 341kg / 752 pounds with the Boxster E tipping the scales at 1,600 kg / 3,527 pounds. The battery can be fully recharged through a conventional socket in approximately 9 hours; however, the charging time can be reduced with a rapid charging function.

According to Porsche, despite the electronic components, there’s enough space left for a luggage in the front storage compartment while the rear luggage area of the Boxster E remains unchanged.

In addition, both the rear- and four-wheel drive Boxster Es 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.

[from carscoop.blogspot.com]

 

Filed Under: Green Porsche, Porsche News Tagged With: electric porsche, Porche Boxster, Porsche news

Electric Porsche Boxster E review – First Drive

May 11, 2011 by porsche 3 Comments

  • Electric Porsche
  • Porsche Boxster E
  • Porsche Boxster review – First drive

Electric Porsche Boxster E First drive Front angle viewImagine you’re running along a country road at the wheel of a Porsche Boxster. One second, there’s the glorious sound of a flat six-cylinder engine — a faint mechanical thrashing overlaid with the thrum of bass exhaust — behind your shoulders.

The next second, nothing. No engine noise. No exhaust. Nothing.

This is what happens when you deactivate Active Sound Management (ASM) on the Porsche Boxster E. Consisting of a digital recording and two speakers — one mounted within the cabin, the other within the rear bumper assembly — ASM has been developed to provide the plug-in electric prototype version Boxster with the simulated sound of its more conventional gasoline engine sibling.

A makeshift switch attached to the dashboard controls it all. Volume is linked to throttle load, so the harder you drive the louder it plays. Except, of course, if you decide to turn it off.

A Convertible Laboratory
Electric Porsche Boxster E First drive Rear angle viewYou may have heard about the Porsche Boxster E. Created as part of the Intelligent Performance program that has already spawned the Porsche 911 GT3 RS Hybrid and Porsche 918 Spyder, the new two-seater is described as a toe-in-the-water exercise.

As well as its various testing duties, the new car has also been showcased as part of an electric mobility initiative being run by Porsche’s home city of Stuttgart. Now, after some persuasion over recent months, the officials in Zuffenhausen have finally decided to let us sample its all-electric roadster.

Currently, there are only three Porsche Boxster E prototypes in Porsche’s test and development fleet. Two of them, including the car we drove, use a single electric motor and rear-wheel drive. The third prototype runs two electric motors and a more complex four-wheel-drive arrangement with front axle components brought over from the 911 Carrera 4.

Electric Porsche Boxster E First drive Interior Dashboard LCD screenThey’re essentially rolling research laboratories that are being used to gather data that will be used to shape Porsche’s electric car plans. “We had already developed gasoline-electric hybrid solutions for a number of models. The next logical step was a full electric car. We haven’t been pressured by market considerations or anything like that. It is a natural progression in the field of alternative drive systems,” says Michael Dimitrov, head of advanced engineering.

Why the Boxster?
According to Porsche, the midengine roadster provides the best packaging solution of any of its existing sports car models. It allows the battery to sit low in a mid-mounted position to get the center of gravity down. The Boxster’s low curb weight was also a decisive factor in giving it the nod over the 911, according to Dimitrov. “The lighter the base car, the more scope you have in terms of performance and range,” he says.

Electric Porsche Boxster E First drive Side viewThe conversion from conventional gasoline power to electric propulsion has not altered the Boxster’s basic architecture in any obvious way. The inner body structure is virtually unchanged, as is the complete outer body. If it weren’t for the silver and orange “Intelligent Performance” graphics Porsche’s marketing department has seen fit to slap on the car, not to mention the lack of tailpipes at the rear, you’d be hard-pressed to pick it apart from the regular model.

More than the performance, though, it’s the completeness of the Boxster E that’s most satisfying.

Sitting in the space usually taken up by the Boxster’s mid-mounted flat six-cylinder engine is a battery pack sourced from U.S.-based A123 Systems. It’s a lithium-ion unit that consists of 340 individual cells that provide 29kWh of power capacity and a total output of 240 kW. The entire pack weighs 752 pounds and its temperature is kept in check by a modified version of the Porsche roadster’s existing cooling system, which relies on two radiators mounted in the nose section.

Charging is done through a plug mounted in the same place as the traditional fuel filler in the right-hand front fender. There are no figures for the North American 110-volt system, but Porsche claims a recharge time of eight hours on the 240-volt European network. Kinetic energy created under braking is also used to top up the battery on the run. A whole range of electronic systems and wiring, meanwhile, occupies the space normally devoted to the Boxster’s fuel tank up front in the nose.

Remove Engine, Add Motor
Electric Porsche Boxster E First drive InteriorIn the rear-wheel-drive prototype we drove, the electricity stored in the battery is used to power a single electric motor mounted at the rear as part of a modified rear axle. Sourced from parent company Volkswagen, which uses the same brushless unit in the Golf e-motion, it develops a maximum 121 horsepower — or less than half of what the Boxster’s 2.9-liter engine throws out. Peak torque is rated at 199 pound-feet, all of which is available the moment you introduce your foot to the accelerator pedal.

The new driveline weighs more than 880 pounds in total, taking the Porsche Boxster E’s curb weight to a claimed 3,483 pounds. There has been no attempt to lighten the car’s structure through the use of carbon fiber or other exotic materials. “The focus is very much on the electric system rather than construction. We’ve got other programs handling that aspect of development,” says Dimitrov.

There are, however, some low-cost measures aimed at keeping the pounds off, including the use of carbon-fiber-backed shell seats, lightweight 19-inch wheels and carbon-fiber disc brakes — all of which are offered as optional equipment on the Boxster. Still, there’s no disguising the fact that it tips the scales some 408 pounds beyond its gasoline engine sibling.

Other changes? Porsche has ditched the current Boxster’s hydraulic steering system for a new electromechanical system that’s set to appear on the third-generation version of its roadster due out next year. The standard air-conditioning compressor has also been swapped for a more efficient unit that uses less electricity.

Needs Some Noise
Electric Porsche Boxster E First drive Side view Roof onWe took the Porsche Boxster E out on to the streets of Stuttgart and over some more challenging roads through the surrounding countryside. In general terms, it is not unlike many other electric cars we’ve driven of late — smooth, efficient and straightforward to drive. But with a limited range of just 106 miles on a fully charged battery, you’ve always got to keep an eye on the miles-to-empty gauge.

Even with a modest amount of throttle, the new Porsche accelerates away from the traffic lights smartly, hitting posted limits without feeling strained. There’s sufficient low-end torque from the motor in back to give the zero-emissions two-seater a nice flexible delivery that ensures it never gets left behind at city speeds.

Whether you choose to activate the ASM is really a matter of the conditions. In traffic, the distant sound of the engine is rather superfluous and, at times, a distraction. But find a more secluded road where you can stretch the Porsche Boxster E and it suddenly seems odd to run without it. Think what you will of a simulated sound recording, but the synthetic thrash of engine mechanicals and an accompanying thrum of exhaust certainly adds to the entertainment factor.

Less Weight Would Be Good, Too
Electric Porsche Boxster E First drive Rear view SignIn the end, though, the rear-wheel-drive Boxster E just doesn’t possess the power to really overcome its weight. Beyond 50 mph, the level of acceleration begins to trail off quite dramatically as the efforts of the electric motor meet their physical limits. Porsche claims zero to 62 mph in 9.8 seconds and a top speed limited to just 93 mph — although the prototype we drove was restricted to an even lower 75 mph.

On the strength of its on-paper specifications, the four-wheel-drive Porsche Boxster E prototype would seem to go some way to fulfilling our desire of greater performance. With a second electric motor mounted up front and providing additional drive to the front wheels, Porsche says it accelerates from zero to 62 mph in just 5.5 seconds — just 0.2 second shy of the Boxster S. It’s also claimed to run to a limited 120-mph top speed.

And because the second electric motor also acts as an alternator, providing the basis for additional recuperation of kinetic energy, Dimitrov reveals that the four-wheel-drive prototype boasts the same 106-mile range as the rear-wheel-drive prototype. It certainly sounds more like a car worthy of the Porsche badge.

The Complete Package
Electric Porsche Boxster E First drive Front view In motionMore than the performance, though, it’s the completeness of the Boxster E that’s most satisfying. It might have been a prototype, but the car we drove felt remarkably well built. Dynamically, it lacks the intensive communication you receive in the gasoline-engine Boxster, but it is still among the more engaging electric cars we’ve ever come across — up there with the likes of the Audi R8 E-tron, for sure.

The steering, uniquely tuned for the Boxster E, is lighter than we expected in terms of weighting but is quite direct, providing great agility given the heavy lump of battery that sits just behind your shoulders. The handling is also impressively tidy, with tight body control and a neutral nature to the way it corners, although admittedly we weren’t pushing the limits. And the brakes offer good levels of feel and sensational stopping power. Like we said, complete.

It’s hard to say when the zero-emissions technology used in the Porsche Boxster E will migrate into a production car. For that to happen, Porsche boss Mathias Muller must first decide whether it is wise for a company with such a rich tradition in conventional gasoline-engine sports cars to follow the likes of Tesla into the electric car ranks. Then again, that decision might be made for him. Either way, Porsche will be ready.

Porsche Boxster E picture gallery

Electric Porsche Boxster E First drive Front angle view
Electric Porsche Boxster E First drive Front view In motion
Electric Porsche Boxster E First drive Side view Roof on
Electric Porsche Boxster E First drive Side view Roof on
Electric Porsche Boxster E First drive Side view
Electric Porsche Boxster E First drive Side view
Electric Porsche Boxster E First drive Rear angle view
Electric Porsche Boxster E First drive Interior
Electric Porsche Boxster E First drive Front angle side view
Electric Porsche Boxster E First drive Front angle view
Electric Porsche Boxster E First drive Interior Dashboard LCD screen
Electric Porsche Boxster E First drive Side view
Electric Porsche Boxster E First drive Rear angle side view
Electric Porsche Boxster E First drive Rear angle view
Electric Porsche Boxster E First drive Interior Steering wheel
Electric Porsche Boxster E First drive Rear view Sign

 

Filed Under: First drive Tagged With: electric porsche, Porche Boxster

Porsche CEO: We are “almost over the initial hype” of electric cars

March 2, 2011 by porsche Leave a Comment

  • Electric Porsche
  • Green Auto news

green porsche logoAutomotive News recently got the chance to sit down with Porsche CEO Matthias Mueller to go over the company’s plans for the future, and one of the juiciest tidbits to crop up from the interview came from a discussion on the possibility of a fully-electric Porsche. When asked about a battery-operated sports car, Mueller said that while some estimates say that 20 percent of all vehicles on the road will be electric by 2020 (says who, we wonder), he believes that figure will likely sit closer to three to five percent. He finished up by saying “We are now almost over the initial hype before business really gets started.”
However the electric/internal combustion mix plays out in nine years, Mueller said that he believes Porsche will be a player in that market. That means that if 10 percent of the car market is electrified, you can expect 10 percent of Porsche vehicles to be the same.

The interview also touched on everything from a new model above the 911 to future variation on the Panamera.

Filed Under: Porsche News Tagged With: electric porsche, Porsche, Porsche green

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