Wednesday, October 04, 2006

Saab 9-5 BioPower

2006 Saab 9-5 BioPower
Saab Press Release

Saab 9-5 BioPowerSaab now offers the benefits of BioPower in two engine formats, both delivering enhanced performance as well as reduced fossil CO2 emissions. First customer deliveries of the new Saab 9-5 2.3t BioPower model commence later this October, reinforcing the sales success of the current 2.0t version.

On sale initially in Nordic markets, the UK and Ireland, the Saab 9-5 2.3t BioPower will also be available in other European countries. It is being offered in addition to the current 2.0t BioPower model, which is already established as Sweden's the best selling 'environmentally friendly' vehicle.

By using turbocharging to exploit the higher octane rating of E85 bioethanol fuel, the new 210 bhp BioPower variant delivers 14 per cent more maximum power and 11 per cent more torque when running on E85 compared to gasoline. Its introduction extends Saab's leadership of the premium 'flex fuel' segment.

Saab 9-5 BioPower"The launch of a 2.3 turbo model is a logical next step in the roll out of our successful BioPower concept," says Jan-Ake Jonsson, Saab Automobile's Managing Director. "It is being offered in response to customer demand for an eco-friendly vehicle that delivers even more performance. It is the first in a number of future BioPower initiatives that we have under development."

Both BioPower models combine the benefits of 'going green', through cutting carbon dioxide emissions, with the enjoyment of even sportier driving performance. A further practical advantage of the BioPower formula allows customers to run on gasoline and/or E85 fuel in any proportions without the need to make adjustments.

Running on E85, the 2.3t BioPower engine delivers maximum power of 210 bhp and 310 Nm of torque, compared to 185 bhp and 280 Nm when using gasoline. As an example of the increased performance, the Sedan with manual transmission accelerates from zero to 100 kph in 7.9 secs and 80-120 kph in fifth gear in 11.0 secs, compared to 8.5 and 12.6 secs when running on gasoline.

Saab 9-5 BioPowerThe 2.0t BioPower engine offers similar improvements. On E85, it delivers 180 bhp and 280 Nm of torque, compared to 150 bhp and 240 Nm when using gasoline, a 20 per cent increase in maximum power and 16 per cent more torque. On the road, this translates to zero to 100 kph acceleration in 8.5 secs and 80-120 kph in fifth gear in 12.6 secs, compared to 9.8 and 14.9 secs when using gasoline.

The adaptability of Saab's powerful Trionic engine management system has facilitated reprogramming to accommodate the different ignition timing and fuel/air mixture requirements of E85 fuel. Trionic monitors fuel quality after every visit to the filling station and automatically makes any adjustments necessary for running on E85 and/or gasoline in any combination. That means Saab BioPower drivers can also use gasoline, should E85 not be available.

E85 has a much higher octane rating (104 RON) than gasoline (95 RON), and turbocharging allows the use of a higher boost pressure and more advanced ignition timing giving more engine power than is possible on gasoline without risk of harmful 'knocking' or pre-detonation. The only hardware modifications necessary are more durable valves and valve seats, and the use of bioethanol compatible materials in the fuel system, including the tank, pump, lines and connectors.

"The engine management system automatically adjusts for the blend of fuel so, if there is no E85 available, the customer can simply run on gasoline at any time," says Kjell ac Bergström, Executive Director of Saab Automobile Powertrain AB. "Our turbocharged engines are particularly well suited to exploiting the benefits of bioethanol and our work with BioPower indicates there is a great deal of development potential for this fuel.”Further Saab BioPower Developments Saab has already developed engines that can run on pure E100 fuel, eliminating fossil fuel emissions altogether, as seen in its Aero X and Saab BioPower Hybrid concept cars.

Shown this year at the Stockholm, London and Paris motor shows, the Saab BioPower Hybrid Concept demonstrates how pure bioethanol and electric power can be combined to yield fuel and energy savings, as well as greater performance. It is the world's first hybrid vehicle capable of delivering zero fossil fuel emissions at all times.

The powertrain of the Saab 9-3 Convertible show car features a BioPower evolution of the current all aluminium, 16 valve 2.0 litre turbo engine from the Saab 9-3 range and General Motors' innovative two mode hybrid transmission. E100 has an even higher octane rating (106 RON) than E85 (104 RON), allowing this engine to develop 260 bhp and an impressive 375 Nm maximum torque, 24 per cent and 25 per cent more, respectively, than its gasoline only equivalent. And, of course, it still retains a full 'flex-fuel' capability.

Saab's unique Spark Ignited Direct Injection (SIDI) system provides optimum combustion with E100, ensuring the same cold starting performance as a gasoline engine. Apart from variable inlet and exhaust cam phasing for improved breathing, it shares the same hardware modifications as Saab's production BioPower engines.

However, the ultimate performance expression of Saab BioPower is to be found in the exciting Aero X concept car. Running on E100 and incorporating the SIDI system, its twin-turbo 2.8 litre V6 engine delivers 400 bhp maximum power at 5,000 rpm and massive torque of 500 Nm between 2,000 and 5,000 rpm. Computer simulations for this high performance, all wheel drive coupe suggest zero to 100 kph acceleration in just 4.9 seconds.

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