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Exige 270E Tri-Fuel
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  Lotus Exige 270E Tri-Fuel
 

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Country of origin:Great Britain
Produced in:2008
Numbers built:one-off
Introduced at:2008 Geneva Motor Show
Source:Company press release
Last updated:March 18, 2008
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Click here to download printer friendly versionLotus Engineering, the world renowned automotive consultancy division of Lotus, unveils its latest development towards carbon neutral road transport at the 78th Geneva International Motor Show. The Lotus Exige 270E Tri-fuel is the most powerful road version yet of the Exige (0-60 mph / 96 kph in 3.88 seconds, a top speed of 158 mph (255 km/h), 270 hp (201 kW / 273 PS at 8000 rpm) and it runs on any mixture of gasoline, bioethanol and methanol. Emerging technologies will allow alcohol fuels such as methanol, already a proven internal combustion fuel, to be made synthetically from CO2 extracted from the atmosphere.

An alcohol-based fuel derived renewably from atmospheric CO2 would allow society to transfer relatively easily to sustainable, carbon-neutral internal combustion. Lotus Engineering is researching the use of sustainable synthetic alcohols as potential future fuels, with technology available from Lotus for introduction in four to five years. However, the supply infrastructure investment from governments and fuel companies could take 15 to 20 years.

The Exige 270E Tri-fuel is part of Lotus' research to understand the complex combustion process involved in running on mixtures of alcohol fuels and gasoline, which will be important for a successful transition from today's fuels to the sustainable, synthetic fuels of the future.

This research is just one aspect of Lotus Engineering's ground-breaking work on environmentally-friendly vehicles. It is involved with a number of electric vehicle projects, has successfully integrated hybrid technologies into vehicles such as its EVE demonstrator, and recently announced results on a collaboration with Continental Division Powertrain on the Low CO2 downsized three-cylinder engine. The research into sustainable alcohols is progressing at Lotus' Hethel headquarters in Norfolk, UK and involves input from the Royal Society of Chemistry's Alternative Fuel Symposium Series, the Low Carbon Vehicles Innovation Platform, developed by the Technology Strategy Board and direct discussions with the University of Sheffield.

Methanol (CH3OH) can be produced synthetically from CO2 and hydrogen. Ultimately, emerging processes to recover atmospheric CO2 will provide the required carbon that can entirely balance the CO2 emissions at the tailpipe that result from the internal combustion of synthetic methanol. The result is that a car running on synthetic methanol, such as the Exige 270E Tri-fuel would be environmentally neutral.

As well as being green, the great benefit of synthetic methanol is that it would use similar engines and fuel systems to those in current cars; and synthetic methanol can be stored, transported and retailed in much the same way as today's liquid fuels such as gasoline and diesel.

Synthetic methanol also possesses properties better suited to internal combustion than today's liquid fuels, giving improved performance and thermal efficiencies. And it is ideal for pressure-charging (Turbocharging and supercharging) already being introduced by manufacturers to downsize engines in a bid to improve fuel consumption.

Lotus Engineering's Lotus Exige 270E Tri-fuel technology demonstrator illustrates how easy it is for synthetic methanol to be embraced over time as a future fuel for road transport. The Exige 270E Tri-fuel, with its supercharged 2ZZ-GE VVTL-i engine, could be the forefather of a new generation of conventionally driven cars that have the potential to be environmentally-neutral.

Mike Kimberley, Chief Executive Officer of Group Lotus plc, explains: "Lotus is a world-class leader in research into a variety of alternative fuels; each has its merits and challenges and some options could be more easily implemented than others. But while motorists want to be green, we do not want to change the culture of total freedom for the owners, who will have an extreme reluctance to spend more at the pump, or to sacrifice the performance of their cars.

Mike Kimberley continues, "At present, the motor industry is seeking a route to reduce CO2 emissions just at the tailpipe; this focus is far too narrow. A sustainable alcohol such as synthetic methanol has the potential to reduce the overall CO2 footprint of internal combustion vehicles towards zero. Produced through CO2 recovered from the atmosphere and given a tax incentive, it immediately becomes a green, cheap and more desirable fuel. For those compelling reasons motorists, legislators and car manufacturers must switch to a sustainable alcohol like synthetic methanol."

Geraint Castleton-White, Head of Powertrain at Lotus Engineering explains: "For car companies and the motorist, the use of sustainable alcohols like synthetic methanol requires relatively few changes to the vehicle. It can also use the current fuel distribution infrastructure, which is a huge advantage for suppliers.

Geraint Castleton-White continues, "We believe that, technically, there are a small number of significant but by no means insurmountable hurdles to the adoption of synthetic methanol as the staple future fuel for internal combustion. We are some way into a number of extensive research projects but of course, we understand that further research needs to be undertaken to fully overcome potential challenges that may arise."

David Bott, Director of Innovation Platforms within the Technology Strategy Board in the UK says: "The approach taken by Lotus Engineering is a good balance between the desire for the lowest carbon emissions and the practicality of car evolution. The drive for low carbon transport is a real imperative and its progress will require short, medium and long term solutions."

Tony Ryan, ICI Professor of Physical Chemistry at the Department of Chemistry at The University of Sheffield says: "There is a great opportunity to develop methanol as a transport fuel in a mixed energy economy that embraces a wide range of primary energy sources, including nuclear, solar, and other renewable power sources. Combining atmospheric CO2 with hydrogen to form methanol provides a pathway to personal transport with low carbon emissions that uses the existing liquid-fuel infrastructure and Lotus Engineering offers world leadership in the development of engines to use these fuels of the future."

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