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      02-26-2009, 08:11 AM   #1
footie
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Lotus new engine technology

http://www.worldcarfans.com/9090225....o-geneva-debut

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Lotus is delving into the world of alternative fuels through this new Omnivore engine concept. The Omnivore stands for Lotus' latest in developing engines for a future that relies less on fossil fuels and more on alcohol-based powerplants.

At the 79th Geneva International Motor Show next week Lotus will he exhibiting the single-cylinder research engine monoblock. The engine is designed for high thermal efficiency regardless of whether an alcohol-based fuel or petrol (gasoline) is used. It employs a variable compression ratio system and operates on a two-stroke rather than four-stroke combustion cycle. The design is such that it eliminates the use of a cylinder head gasket which means less weight and higher durability. Poppet valves have also been done away with.

"The absence of poppet valves in two-stroke engines makes the incorporation of a variable compression ratio system relatively straightforward" said Geraint Castleton-White, Head of Powertrain at Lotus Engineering. "Our research into these systems on four-stroke engines has led us to the conclusion that while thermodynamically it is a desirable technology to incorporate, practically it is very difficult, particularly taking into consideration production feasibility.

This two-stroke engine could solve these practical difficulties and simultaneously permits a much larger range of compression ratio adjustment, with the potential to perform at a much higher efficiency when running on renewable fuels."

Lotus believes that C02 emissions would be greatly reduced towards the ideal of zero if the motor industry were to embrace alcohol-based fuels.
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      02-26-2009, 08:59 AM   #2
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global warming bs

total nonsense. manmade global warming is a fraud conspiracy to rid us of fun v-8 engines. co2 doesn't drive temperature up or down, it is the other way around because oceans release co2 when they get warmer. methane and water vapor are much more powerful greenhouse gases, so we need to ban farting and showering.
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      02-26-2009, 09:02 AM   #3
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picture of munche1 making his/her speech

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Originally Posted by munchen1 View Post
total nonsense. manmade global warming is a fraud conspiracy to rid us of fun v-8 engines. co2 doesn't drive temperature up or down, it is the other way around because oceans release co2 when they get warmer. methane and water vapor are much more powerful greenhouse gases, so we need to ban farting and showering.
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      02-26-2009, 09:15 AM   #4
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Originally Posted by munchen1 View Post
total nonsense. manmade global warming is a fraud conspiracy to rid us of fun v-8 engines. co2 doesn't drive temperature up or down, it is the other way around because oceans release co2 when they get warmer. methane and water vapor are much more powerful greenhouse gases, so we need to ban farting and showering.
Forget about the enviormental issue for a moment, btw I agree that it's BS the effect that the motor car or man is having to the 'greenhouse' effect.

There is one fact that can't be ignored and that is fossil fuels WILL be coming to an end with to next 50~60years at our current rate which I might add is increasing with China and India becoming global powers.
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      02-28-2009, 04:52 PM   #5
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Good for the UK, less road tax to pay.
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Being a fan of Honda engines, I requested that they consider building for the F1 a 4.5 liter V10 or V12. I asked, I tried to persuade them, but in the end could not convince them to do it, and the McLaren F1 ended up with a BMW engine.
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