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  • How to make super-efficient cars...

    Visit this site... http://ghlin2.greenhills.net/~apatter/steamfaq.html

    I sent this to FORD and GM, so they have been told. This proves they want our fuel consumption to stay they way it is!

    How do you build such a car? The fact of the matter is that internal combustion cars are only about 25% thermally efficient. 75% of the heat energy goes into the radiator. That is a terrible waste. How would a car company use this energy more efficiently?

    1)External combustion
    a)Using a modern flash boiler system means that a larger boiler carrying many gallons of water is not needed.

    I. Modern mono-tube boilers need only about 3-5 gallons of water. Only a small percentage of this is actaul steam. They are less likely to explode as they use less volatile fuels. Modern steam generators for automotive use are constructed in such a way that in case of a rupture they have vary little water at the saturation point, preventing an explosion.

    II.The boiler could pick up as much as 1200 degrees of heat coming off the exhaust manifold. That would be more than 800 lbs of pressure. Very useful

    III. The boiler could be wrapped by the exhaust header(s) soaking up the heat and help catalytic converter light-off by being heated up by use of a electric element.

    IV. If a steam engine is used in combination with a diesal the transmission could be deleted or switched to a centrifugal clutch allowing direct drive. Direct drive and lock up clutching allow for better fuel economy and less weight which helps economy also.


    The engine without a transmission could sit low and back for excellent handling. If combined further with an electric motor the gasoline engine could be throttled back to the point that it merely generates heat and the air/fuel ratio is leaned out quite a bit further improving economy. Another idea is to include a small transmission. And have each component able to couple/decouple. That would allow a electric motor to drive the car until the batteries where depleted.

  • #2
    interesting
    Brian

    '95 Cutlass Supreme- "The Rig"
    3400 SFI V6, 4T60e
    Comp Cam grind, LS6 valve springs, OBD2 swap, Tuned
    2.5" DP/ 2.5" dual exh/ Magnaflow Cat/ crap mufflers/ 3500 Intake manifold/ 65mm TB
    TGP steering Rack/ 34mm Sway Bar/Vert STB/ KYB GR2's

    '08 Chevy Trailblazer SWB 1LT "Smart Package"- LH6 5.3L V8/4L60e, A4WD

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    • #3
      Re: How to make super-efficient cars...

      Originally posted by EspanolaGuitarista
      How do you build such a car? The fact of the matter is that internal combustion cars are only about 25% thermally efficient. 75% of the heat energy goes into the radiator. That is a terrible waste. How would a car company use this energy more efficiently?
      This is true but not all of the 75% of the wasted heat is usable. Max efficiency for a "ideal engine" or a Carnot heat pump is only around 60-70% (havent taken thermo in a while so the numbers might be off). So really you are only loosing 35-45% of the useable energy.

      There is still a large loss of energy either way you look at it.

      Otto Cycle:
      gases, equations, mathematics, pressure, temperature, volume, thermodynamics, energy, heat, work, thermodynamic cycle, Otto cycle, internal combustion engine, valves, pistons, stroke, 4-stroke engine, compression stroke, power stroke, intake stroke, exhaust stroke, combustion, heat rejection, pv diagram, pv plot, pressure-volume diagram


      Carnot:
      Mega Squirted Fiero
      How I did it here

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      • #4
        Disassociation of water would be more efficient to create cold steam, in which the the water skips boiling point or elemental state to a gas then from gas straight into a vaporous state. Induction instead of compression, where the change of state pulls a low vacuum. Not only will hydrogen cause a compression stroke (notably weak), it will also create a induction stroke (notably strong), similar to that of propane if burned in an engine engineered for hydrogen.

        Example in a sense:

        Boil a pop can, then drop it upside down in a bowl of ice cold water... The can collapses, it is not the heat that creates this it is the spontaneous condensation of water on the inside of the can. Where as hot air can hold more water, if the air loses this volume it creates a low pressure which can be a very great number since the air surrounding the can has a fair amount of pressure.

        This technology was used on steamer trains to increase efficiency, only saturations were high enough that water condensed at high temps.
        I am back

        Mechanical/Service Technican

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        • #5
          Sorry to not clarify...

          I was thinking about a cogenerating engine. This means the Otto cycle would create tremendous heat then the Carnot cycle would convert that excess heat of combution into work. So if we take, for example:

          A 3100 v6 putting out: 185 ft/lbs at 25% efficiency.
          At a minimum this would be 518 ft/lbs. given 60% efficiency of a steam engine. I will try to figure out the numbers. Give me a week or 4.

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          • #6
            now that is cool, who knew?

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            • #7
              I can use any fuel, huh?

              Should call some people in Iran and get me some cheap uranium.

              Anyone know a good cheap source for carbon rods?

              I like the idea of a car that you have to keep idling to stop it from overheating

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