electric Porsche 911 from Ruf Automobile, the eRuf

Porsche isn't the only one electrifying their vehicles. As evidenced by its production plans for ten testers fitted with three different drivetrain configurations, it could be argued that tuning-haus Ruf Automobile GmbH has a deeper development program than the famous German automaker itself.

We had hoped by this time that the Pfaffenhausen firm would be offering its Greenster or Stormster to the public, but that doesn't seem to be the case. What we will have instead is a data logger-equipped pool of eRufs built being built on the 911 platform with help from Siemens and the government.

The three Porsche 997 Carrera-bodied petri dishes include one with a single motor bolted to a single-speed gearbox that sucks juice from a 29 kWh battery. This package is only good for 150 km (93.21 miles) per charge and does the 0 to 60 dance in an almost-respectable seven seconds.

Next is a transversely-mounted twin motor arrangement that uses an automatic two-speed gearbox to get 335 horsepower (250 kW) to the rear wheels. Boasting a 36.6 kWh battery in a climate-controlled enclosure, this little piggy can get a market 200 km (124 miles) away and sprint to 60 mph in a wolf-beating five seconds.

The third layout repeats the previous motor and battery setup. The main difference is in the gearbox, or boxes we should say, as each motor gets its own. This gives it independent rear wheel drive that can take advantage of computer-controlled torque vectoring. Its performance is also equal to the other dual-motor setup, save for a lowered top speed of 180 km/h (112 mph) down from 220 km/h (137 mph). We would hope what it loses in high speed it gains in cornering ability.

Ruf will be bringing at least one of the new eRufs to the upcoming Geneva Motor Show where we hope they'll allow for some hood-raising fun. Hit the jump for all the released details.

[Source: Ruf Automobile GmbH]
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RUF Automobile GmbH is developing various electric-powered sports vehicles based on the Porsche 911 for the purpose of running field tests of electric vehicles in real life situations. The first ten eRUF vehicles, manufactured in cooperation with Siemens AG, will be presented in the first half of 2011. The project is supported by the German Federal Ministry of the Environment for whom the results of the field tests relating to different battery and power-train concepts are of particular interest. For this purpose, all vehicles are equipped with on-board data logging systems.

The following vehicle specifications are being manufactured for the purpose of the above mentioned field tests:

1. Single Motor Concept

- Base vehicle, Porsche 997 Carrera
- Electric motor (180 kW) and inverter from Siemens AG
- Porsche production gearbox used for speed reduction
- Lithium-ion batteries with an energy capacity of 29 kWh
- Integrated charger, DCDC-converter, plug, socket and charging cable
- interior heating
- Data recording unit for analysis and documentation of the charging/ discharging, journey and component data
- Driving range approximately 150 km, maximum speed about 220 km/h, acceleration from 0 to 100 km/h in about 7 seconds

2. Twin Motor Concept with 2-speed Gearbox

- Base vehicle, Porsche 997 Carrera
- Two transversely mounted Siemens synchronous electric motors (250 kW) with double inverters
- Automatic 2 speed gearbox, limited slip differential
- Liquid cooled and heated lithium ion battery with an energy capacity of 36,6 kWh
- Integrated charger, DCDC-converter, plug, socket and charging cable
- interior heating
- Data recording unit for analysis and documentation of the charging/ discharging, journey and component data
- Driving range approximately 200 km, maximum speed about 220 km/h, acceleration from 0 to 100 km/h in about 5 seconds

3. Twin Motor concept with Torque Vectoring

- Base vehicle, Porsche 997 Carrera
- Two transversely mounted Siemens synchronous electric motors (250 kW) with double inverters
- Two seperate angular bevel gearboxes for independent rear wheel drive
- Liquid cooled and heated lithium ion battery with an energy capacity of 36,6 kWh
- Charging via inverter, DCDC-converter, plug, socket and charging cable
- interior heating
- Data recording unit for analysis and documentation of the charging/discharging, journey and component data
- Driving range approximately 200 km, maximum speed about 180 km/h, acceleration from 0 to 100 km/h in about 5 seconds

All eRUF field test vehicles receive an individual technical approval certificate from the German inspection agency (TÜV).