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The MCE-5 VCRi, a new kind of conventional engine

Discussion in 'Fred's House of Pancakes' started by Tideland Prius, Feb 26, 2009.

  1. Tideland Prius

    Tideland Prius Moderator of the North
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    In these morose times where hard-to-come-by credit and a financial crisis are having their way with the auto industry, revival will come from the development of a new type of heat engine. Over the next 20 or 30 years, this type of mill will no doubt still account for nearly 80% of the market.

    http://www.auto123.com/en/news/car-...-new-kind-of-conventional-engine?artid=105454
     
    #1 Tideland Prius, Feb 26, 2009
  2. jayman

    jayman Senior Member

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    Very interesting!

    Combine variable compression with variable valve timing, and per-cylinder fuel monitoring and control, and you could expect V8 power out of 4 cylinder fuel economy

    Or, combine that into a 2 cylinder and get 4 cylinder power out of it
     
    #2 jayman, Feb 26, 2009
  3. Tideland Prius

    Tideland Prius Moderator of the North
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    Any idea how this works? How do they get variable compression ratio?
     
    #3 Tideland Prius, Feb 27, 2009
  4. Presto

    Presto Has his homepage set to PC

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    When I first clicked this thread, I thought the title was a thread about the latest in HTPC front-end w/ PVR capabilities.
     
    #4 Presto, Feb 27, 2009
  5. donee

    donee New Member

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    Hi All,

    The MCE engine has had a detailed website up for some years. One of the big advantages of it is the linear crank connection, which minimizes friction forces between the piston and cylinder wall.

    Here is a link to that webpage, which includes an aninmation of the operating engine: MCE-5 VCR Engine .

    This more complicated design is probably enabled by the use of computerized mechanical design, and improved materials technology. Its hard to see a pre-computer engineer successfully being able to manufacture this with all the mechanical stack-up involved.
     
    #5 donee, Feb 27, 2009
  6. jayman

    jayman Senior Member

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    PER CYLINDER compression ratio adjustment. Now that is cool
     
    #6 jayman, Feb 27, 2009
  7. qbee42

    qbee42 My other car is a boat

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    Compression is adjusted by varying the length of the stroke. This is fairly easy to do with a linear stroke.

    Tom
     
    #7 qbee42, Feb 27, 2009
  8. hyo silver

    hyo silver Awaaaaay

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    I've been doing that for years. :eek:
     
    #8 hyo silver, Feb 27, 2009
  9. qbee42

    qbee42 My other car is a boat

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    Short stroking? :rolleyes:

    Tom
     
    #9 qbee42, Feb 27, 2009
  10. jayman

    jayman Senior Member

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    Everybody hold on tight, we're going off the rails again

    baaaaaaaaaaaaaaaa
     
    #10 jayman, Feb 27, 2009
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