Geneva '08: Lotus Exige 270E Tri-Fuel runs on gas, ethanol and methanol

15 May 2015 | Author: | Comments Off on Geneva '08: Lotus Exige 270E Tri-Fuel runs on gas, ethanol and methanol
Lotus Exige

Geneva ’08: Lotus 270E Tri-Fuel runs on ethanol and methanol

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the Exige for a high-res gallery

in mid-2006, Lotus unveiled a E85-capable Exige 265E was being used as a technology Lotus has used the 265E to about optimizing the performance and of ethanol and flex-fuel engines. At week’s Geneva Motor Lotus is unveiling the next of this research with the 270E Tri-Fuel. This one is of running on gasoline, ethanol or

Paging Bob Zubrin. your car is With an E85-compatible engine, the of calibrating the powerplant basically a two-dimensional continuum of possible going from gasoline to Adding methanol into the mix a third dimension to the map and makes the much more complex.

the fuel blend and determining the fuel flow for optimal is more difficult in this but Lotus has done this and the power to 270hp.

[Source:

Lotus Researches Cars On CO2

Exige 270E Tri-fuel is the stage of Lotus Engineering’s sustainable, synthetic alcohol Lotus Engineering, the world automotive consultancy division of unveils its latest development carbon neutral road at the 78th Geneva International Show. The Lotus Exige Tri-fuel is the most powerful version yet of the Exige (0-60 mph / 96 kph in seconds, a top speed of 158 mph (255 270 hp (201 kW / 273 PS at 8000 rpm) and it on any mixture of gasoline, bioethanol and Emerging technologies will alcohol fuels such as already a proven internal fuel, to be made synthetically CO2 extracted from the atmosphere.

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

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

This research is just one of Lotus Engineering’s ground-breaking on environmentally friendly vehicles. It is with a number of electric projects, has successfully integrated technologies into vehicles as its EVE demonstrator, and recently announced on a collaboration with Continental Powertrain on the Low CO2 downsized three-cylinder

The research into sustainable is progressing at Lotus’ Hethel in Norfolk, UK and involves input the Royal Society of Chemistry’s Fuel Symposium Series, the Low Vehicles Innovation Platform, by the Technology Strategy Board and discussions with the University of

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

As as being green, the great of synthetic methanol is that it use similar engines and fuel to those in current cars; and methanol can be stored, transported and in much the same way as today’s fuels such as gasoline and

Synthetic methanol also properties better suited to combustion than today’s fuels, giving improved and thermal efficiencies. And it is ideal for (turbocharging and supercharging) already introduced by manufacturers to downsize in a bid to improve fuel consumption.

Engineering’s Lotus Exige Tri-fuel technology demonstrator how easy it is for synthetic methanol to be over time as a future for road transport. The Exige Trifuel, with its supercharged VVTL-i engine, could be the of a new generation of conventionally driven that have the potential to be

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

Mike Kimberley At present, the motor industry is a route to reduce CO2 emissions at the tailpipe; this focus is far too A sustainable alcohol such as methanol has the potential to reduce the CO2 footprint of internal combustion towards zero. Produced CO2 recovered from the atmosphere and a tax incentive, it immediately becomes a cheap and more desirable

For those compelling reasons legislators and car manufacturers must to a sustainable alcohol like methanol.

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

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

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

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

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Synthetic methanol a green

Synthetic methanol’s green arise from its potential to be CO2 neutral. The most likely mass-production of the fuel is by using techniques to combine oxygen, and carbon:

· Carbon be sourced from carbon recovered from the atmosphere either large scale facilities or biomass.

· would be taken from the already contained in the CO2 molecule.

Hydrogen would be acquired the electrolysis of water; challenges in the electrical power required; in a future, this could be from renewable sources, an already being addressed by of hydrogen as a fuel.

· methanol can also be supplemented by from biomass sources properly sustainable.

· can be produced easily from a variety of feedstocks.

Please see Methanol Cycle Diagrams

Synthetic methanol How to make it?

for the production of synthetic methanol the extraction of atmospheric CO2 are well and understood but are not being employed on an scale. An early solution be the co-location of a nuclear or hydroelectric with a conventional power the hydrogen generated by hydrolysis of would be combined with CO2 either fossil or biomass to make liquid methanol. In the large volumes of CO2 could be directly from the atmosphere.

methanol easy to adopt?

As as being green, another advantage of synthetic methanol is it can be introduced relatively simply. As the 270E Tri-fuel demonstrates, small changes to engines are such as:

· Sensors to detect content

· Modified for engine management control alcohol/gasoline, flex fuel and systems operations.

· lines compatible with fuels

Lotus Exige

· Higher rate fuel pump and

· Fuel tank compatible with alcohol

In as a liquid, which is miscible gasoline, synthetic methanol can be stored and sold to motorists as today’s liquid fuels with only minor

Synthetic methanol a performance

Synthetic methanol is better to spark-ignition combustion than liquid fuels, delivering performance and thermal efficiencies, due to its octane rating giving it resistance to ‘knock’. As a result, it is a that will benefit the in terms of driving experience. For the Exige 270E Tri-fuel is to 60mph from standstill and has a top speed when using synthetic methanol fuel with conventional gasoline.

methanol is also ideally to pressure-charging, a trend already underway as car makers look to engines to reduce fuel

Synthetic methanol – the way

Lotus Engineering regards alcohols as the third step in a towards carbon neutral The current E85 (85% ethanol and 15% based movement represents the stage in building momentum sustainable fuels. The valuable from the current bioethanol on the market means that methanol would easily be technically and within the existing storage and distribution infrastructure. The towards a synthetic methanol for transportation fuels could be as

1st Generation: there is a handful of bioethanol models on sale the world. These cars run on E85 which is produced from arable crops (food). is unsustainable in the short and medium as global demand for fuel outstrip the supply available farmland to the detriment of food but is a necessary step in the evolution of the

2nd Generation: the next generation fuels will be based on waste, for example crop waste vegetable-based oils and any waste matter. This is also to be unsustainable in the medium to term as the required volume of increases beyond that

can be supplied.

3rd Generation: sustainable such as synthetic methanol can be due to its miscibility with ethanol and This fuel can be produced entirely sustainable, readily inputs, with an environmentally overall impact.

4th Generation: Methanol Fuel Cells: the longer term, sustainable in internal combustion will the soft introduction of direct fuel cells as a long sustainable future fuel. will only be possible pure methanol pumps on the which internal combustion can bring forward due to their to consume a mixture of fuels.

Engineering strongly believes fuel suppliers and car manufacturers a key role to play in the adoption of alcohols as a future green

If car manufacturers were incentivised to next generation models for over the next 5 to 10 years as vehicles capable of running on any mix of and bioethanol, there would be no for an unfeasible instant global Late software changes can the introduction of methanol and fortunately, E85 and subsequently synthetic methanol can be gradually to the marketplace, due to their

Should fuel suppliers the industrial-scale production of synthetic it could be introduced to forecourts the globe within 15-20 and eventually become a global

The Lotus Exige 270E

The Lotus philosophy is all about through light weight. The 270E Tri-fuel is built to the specification possible without to expensive and rare materials. The improvements of using synthetic have been made increasing the power of the engine increasing its weight and therefore the weight of the car.

The heart of the Exige 270E is a Roots-type supercharger (with a internal mechanism meaning it does not require the use of the engine’s and air to air intercooler attached to the tried and 4-cylinder, 1.8 litre 2ZZ-GE engine. Using a development of the and intercooler package from the S, the Exige 270E Tri-fuel has power of 270hp (201 kW / 273 PS) at rpm, 184 lbft (260 Nm) of at 5500 rpm, up by 51 hp (38 kW, 52 PS) or 19% and 25 lbft 45 Nm or 14% the standard gasoline Exige S. engine speed is 8000 rpm rpm transient for up to 2 seconds).

The low carbon alcohol fuels methanol and give more power burned in the engine than gasoline (petrol) fuel. The benefits come largely the high heats of vaporization of and ethanol, which give charge-cooling effects, and the increased ratings. There are other thermodynamic effects. Methanol’s heat of vaporization leads to a higher performance relative to

All charge air ducting has been as short as possible with diameter pipes making that the bends in these are not too tight, to the benefit of throttle and efficiency. The Roots-type Eaton M62 is turned by the crankshaft, and has an integral valve for part load

The 2ZZ VVTL-i engine has two cam profiles a speed cam and a low speed cam. The switch point between two cams is completely variable upon driving conditions and load. This gives the Exige 270E Tri-fuel a and linear surge of power idle speeds all the way to the maximum

An electronic drive-by-wire throttle the quickest engine response whilst keeping the emissions as and as low as possible, to meet relevant demands. Six fuel injectors been fitted to increase flow to the engine at normal and engine speeds and loads.

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