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Thread: NO compression, intake 2 cycle hydrogen steam hybrid engine

  1. #1 NO compression, intake 2 cycle hydrogen steam hybrid engine 
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    A Hydrogen/steam engine with no compression or intake? could it work?



    Consider a two cycle, exhaust-combustion only engine. At TDC H2, O2 and water are injected and ignited. The ignition of hydrogen and oxygen could flash water to steam, cooling the combustion and generating super heated steam, (I think?). The exhaust steam could then be connected to a turbine to generate additional power (electric?).



    This type of engine needs no starter due to no compression cycle to overcome. In a two cylinder(+) engine all that is required to start it, is the injection of HHO into the cylinder in the combustion cycle and igniting it. In a vehicle application, the engine need not run when no output power is required, say stopped or coasting.


    True, this requires both H2, O2, and water tanks, but is not O2 a by-product of water electrolysis? Would the energy save from compression and intake cycles, as well as the elimination of gas just to keep the engine running, be at least a little more efficient?


    bigratlover likes this.
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  3. #2  
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    i like that sort of innovative thinking! i have some comments and constructive(i think) criticism:

    first, i dont think there would be any need for a generator in this sort of engine. steam expands 640 times larger than water(as i vaguely recall form mythbusters), and if you imagine that in less than a second, as well as the explosion from the reaction, id say you have a good compression there, no need for electric input. although that could be a good addition.

    second, you could just suck up whats already out there, saving space in the with out the oxygen tank, although that wouldnt produce quite as preferable of a reaction so i guess that the tank would be the better option.

    third, why stop there? that would produce a lot of water, so one portion can feed back to resteam and another portion could go for molecular separation, to suppy hydrogen and oxygen once more, bringing back the need for the generator to power the process.

    i must say, this could be quite the breakthrough! i cant believe no one else has come up with it! it could be a continuous loop without hardly any need to refuel or recharge without any emissionsw.and im assuming it needs very little water, 1-4 gallons, at my estimate.

    b4rester, i bow at your presence.


    Last edited by bigratlover; June 9th, 2012 at 06:39 AM.
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  4. #3  
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    How exactly do you get hydrogen and oxygen into a cylinder at top dead center without compressing them?
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  5. #4 Gasoline Direct Injection(GDI) 
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    Quote Originally Posted by Harold14370 View Post
    How exactly do you get hydrogen and oxygen into a cylinder at top dead center without compressing them?
    Both pressurised gas and liquid water can be inject directly into the combustion chamber using off the shelf GDI injectors most commonly used in diesel engines, negating the need for a compression cycle. How many though is an issue, at most three, one for H2, one for O2 and one for water. Combining H2 and O2 in a pipe or tank is just too dangerous, but could they be combined directly at the injector during injection? Maybe. Could water also be combined with the gases? The issues is pre-ignition. One injector might work, three should, I think.



    I am playing with a 4 valve 2 cylinder motorcycle engine, re gearing the cam to 1 to 1 timing with the Crank, (equal sized sprockets). This makes both the intake and exhaust ports cover the exhaust stroke, and keeps the valves closed during the compression and combustion cycle of the camshaft. Removing one of the intake and exhaust valves from the cylinder head give ample room to plug and retool to accept computer controlled direct injectors. Good enough for a prototype only, a rotary Wankel engine would be a much better choice but don't have access to one.
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