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Thread: CAMLESS ENGINES...

  1. #1
    Virginity Cure BABY J's Avatar
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    Default CAMLESS ENGINES...



    The operating principle of the system, applied to intake valves, is the following: a piston, moved by a mechanical intake camshaft, is connected to the intake valve through a hydraulic chamber, which is controlled by a normally open on/off solenoid valve.

    When the solenoid valve is closed, the oil in the hydraulic chamber behaves like a solid body and transmits to the intake valves the lift schedule imposed by the mechanical intake camshaft.

    When the solenoid valve is open, the hydraulic chamber and the intake valves are de-coupled; the intake valves do not follow the intake camshaft anymore and close under the valve spring action.
    .......

    The first new engine to be equipped with MultiAir will be the 16-valve 1.4 litre family of naturally aspirated and turbocharged engines, and the first car to go on sale with MultiAir installed will be the Alfa MiTo at the end of 2009. Its second application will be as an integral part of a new two cylinder engine family.
    .......
    Low RPM torque is improved by up to 15 per cent through early intake valve closing strategies that maximise the air mass trapped in the cylinders. Elimination of pumping losses brings a 10 per cent reduction in fuel consumption and CO2 emissions, both in naturally aspirated and turbocharged engines with the same displacement. Optimum valve control strategies during engine warm-up and internal exhaust gas recirculation, realised by reopening the intake valves during the exhaust stroke, result in emissions reductions ranging from 40 per cent for unburnt hydrocarbons and carbon monoxide (HC/CO), and up to a 60 per cent cut in oxides of nitrogen, (NOx).




    http://nextbigfuture.com/2009/03/fia...rough-for.html
    "I'm not a gynecologist... but I'll take a look."


  2. #2
    Virginity Cure BABY J's Avatar
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    And the 1st person to say "rotary" is banned.
    "I'm not a gynecologist... but I'll take a look."


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    LizBiz eats Carpet! bdydrpdmazda's Avatar
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    rotary?

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    BANNED
    "I'm not a gynecologist... but I'll take a look."


  5. #5
    LizBiz eats Carpet! bdydrpdmazda's Avatar
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    Quote Originally Posted by BABY J View Post
    BANNED
    DAMNIT!!!!














    Boxer????

  6. #6
    Fahrvergnügen Ziptied's Avatar
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    Wankel?

    Quote Originally Posted by Ms Dollar View Post
    You haven't told anyone that those are my boobs in your avatar right? Wouldn't want people going crazy or anything...I know how you get jealous

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    \m/>_<\m/ dorin48's Avatar
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    2 stroke?

    But seriously its hard to believe its camless when it has a camshaft. I can see one in both of the pics.

    More like, timing set-less lol. As in the cam is free from mechanical control of the crank and is kept in time solely by a computer.

  8. #8
    ia "racist" dallasb84's Avatar
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    coates engine..... it more like valveless but....

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    www.revetec.com


    Hmmmmmmmmmmmmmmmmmmm
    "I'm not a gynecologist... but I'll take a look."


  10. #10
    1-3-7-2-6-5-4-8 40th GT's Avatar
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    Yeah I definitely see the cams.

    I was expecting to see some rotars.

    Mine's the red one.

  11. #11
    Slowest Car on IA David88vert's Avatar
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    Cams? We don't need no stinkin' cams.....
    "Racing is life. Anything before or after is just waiting." - Steve McQueen

  12. #12
    Zoom Zoom 87 Turbo II's Avatar
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    If you want superior valve control I think we're going to start seeing electromagnetic valves in the future that Audi race cars have been using lately. You can control duration and lift for each individual valve independently and on the fly. It'd be like literally, having the ability to switch between economy and race tunes in MORE than just ignition timing and fuel delivery, but also it would be like installing aggressive race cams instantly without ever turning the car off. THAT is the future of camless engines, unless we ARE talking rotary, then there are more exciting things on the horizon for those engines too.

    ^^ Yeah, I drew a frame of a man running on each fan blade. That is him running at idle

  13. #13
    cravin a s2k
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    ^^^ ive had the idea of electromagnetic valves in the back of my head for a while now. seems like the way to go IMO

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