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Lotus Teases With a Fuel-Agnostic Two-Stroke Engine

JohnnyBGod writes "Lotus claim to have invented a new, more efficient engine design. The two-stroke, flex-fuel engine can achieve, according to the surprisingly technical press release, 'approximately 10% better [fuel consumption] than current spray-guided direct injection, spark ignition engines.' The engine has a sliding puck arrangement to control its compression ratio, and has direct injection and a wet sump, to eliminate fuel leakage to the exhaust and the need to mix oil with the fuel, two common problems with two-stroke engines. Lotus engineering have released a video explaining the engine's operation."

4 of 269 comments (clear)

  1. I have in mind a superior fuel-agnostic engine by drinkypoo · · Score: 3, Interesting

    They can be run on multiple fuels (or indeed, mixtures thereof) and would be ideal for a series-hybrid vehicle, where the drivetrain could be eliminated (it was the weak point in the turbine cars.)

    --
    "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
  2. Re:What took it all so long?? by fruey · · Score: 3, Interesting

    Euro & Japanese manufacturers are less influenced by the US fuel lobby. Explain why petrol costs way less in the US : (the answer is taxation in Europe). The taxation strategy indirectly subsidises (it's not quite a subsidy, of course, but to the end user making one fuel cheaper than the other is akin to subsidy even if the difference is the level of taxation)

    Agree in part with behaviour patterns in Europe, but I've seen roads from Fort Worth & surroundings to Dallas clogged with large vehicles mostly used for a less than 20 mile daily commute...

    --
    Conversion Rate Optimisation French / English consultant
  3. Re:10% improvement isn't that much by burne · · Score: 4, Interesting

    You've missed the Flex-Fuel. It will run on any variation of ethanol/gas mixture, from E5 all the way up to E100. You decide how green you want to be and this engine will adapt to your choice of fuel.

  4. Re:What took it all so long?? by plastbox · · Score: 3, Interesting

    People tend to buy for worst-case instead of average-case scenarios - just in case they ever take that holiday to Disneyland, they don't want to pack in to a compact. Europeans on the other hand take a train.

    What on earth are you talking about? You can't just make retarded, unsupported statements like that! We Europeans are quite fond of our cars, and have no problem packing a family of four into a typical European/Asian family car for vacation. if you think you need to drive a Hummer or a 2-ton pickup truck to get where you're going, then perhaps you should learn to pack your stuff with some common sense (and perhaps put your all-American family on a diet).

    Yes, that diet comment assumed a very clique image of Americans. I allowed myself this small freedom, as you seem to have no problem making stupid statements and assumptions about us.