- German tuner Ruf, in partnership with Siemens and the German Environmental Ministry, is rolling out a test fleet of 10 eRuf vehicles.
- The eRuf models are based on the Porsche 911 Carrera.
- Ruf is testing three types of electrified drivetrains in the eRuf.
PFAFFENHAUSEN, Germany — Ruf Automobile continues to push the boundaries of sustainable mobility in high-performance vehicles, with a new fleet of eRuf cars based on the Porsche 911 Carrera.
The German tuner, well known across Europe for making fast Porsches go even faster, began turning its attention several years ago to making Porsches greener.
Its latest project, supported by the German Environmental Ministry in cooperation with German electronics giant Siemens, involves building a test fleet of 10 eRuf vehicles in the first half of 2011.
The latest eRufs will be equipped with one of three different electrification systems.
The eRuf Single Motor Concept uses a 180kW Siemens electric motor and inverter, a Porsche gearbox, a 29kWh lithium-ion battery pack and an integrated charger, DC converter, socket and charging cable. Driving range is about 93 miles. Top speed is 137 mph, and 0-60 acceleration takes less than 7.0 seconds.
The eRuf Twin Motor Concept uses a pair of Siemens electric motors developing 250kW, equipped with double inverters, a two-speed automatic gearbox with limited-slip differential, a liquid-cooled 36.6kWh lithium-ion battery pack and an integrated charger, DC converter, socket and charging cable. Driving range is about 124 miles. Top speed is 137 mph, and 0-60 acceleration takes less than 5.0 seconds.
The eRuf Twin Motor Concept with Torque Vectoring is similar to the Twin Motor Concept, but adds two separate angular bevel gearboxes for independent rear-wheel drive. Performance characteristics are nearly identical, except top speed drops to 112 mph.
Onboard computer systems will log data from the eRuf field tests.
Inside Line says: Fast and clean could become Porsche's new mantra, with the help of Ruf. — Paul Lienert, Correspondent

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a1c_scg says:
07:20 AM, 02/21/2011
The Twin Motor car w/ the torque vectoring sounds like fun. Prolly handles great, too.
I often wonder if RuF's work is partially funded or developed by Porsche themselves. His stuff is just so cutting edge and top rate.