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   rec.autos.tech      Technical aspects of automobiles, et. al      117,728 messages   

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   Message 116,876 of 117,728   
   Eddy Merceno to Christopher Hauck   
   Re: Can Coleman/white gas be used in an    
   23 Jul 22 12:49:26   
   
   From: numbers@occult.org   
      
   Christopher Hauck wrote:   
   > On Tuesday, November 12, 2002 at 2:19:01 PM UTC-5, C.R. Krieger wrote:   
   >> "gudmundur"  wrote in message   
   >> news:ut0na8o...@corp.supernews.com...   
   >>>   
   >>> How could you 'pour in' propane, which is a vapor at atmospheric pressure?   
   >> Well, first, it's gotta be really *really* cold ...   
   >> --   
   >> C.R. Krieger   
   >> "Don't argue with 'em, dear; they're beneath our dignity." - W.C. Fields   
   > true but I keep seeing people talking about LPG (mostly coleman propane   
   bottles) instead of the ALSO COLEMAN "camp fuel" that comes in non-cylinder   
   more like classic boxy metal acetone/paint thinner cans   
   > I wonder if people can still read anymore as this entire question is based   
   on two versions of LIQUID fuels that remain liquid until heated or evaporated   
   INTENTIONALLY   
   > so obviously the OP got many nonsense replies about a third type of fuel   
   that does not match his/her question in any sense   
   > I am glad the smarter people or at least experienced have given helpful and   
   fully valid answers to the OP   
   > summery: while white gas by itself is not ideal for running a modern highly   
   integrated and optimized large ICE as it has no additives to aid in long-term   
   durability it can be used in emergencies or with smarter cars that offer   
   things like "flex fuel"    
   as those cars will adapt to natural deviations in whatever combustible crap   
   you pour into them   
   > it also tends to not matter much in "dumber" small engines with four-stroke   
   designs as those tend to be balanced to match a class of fuels that white gas   
   is part of and I guess are also much less prone to buildup damage as they are   
   low-mass engines    
   with a defined self correcting loop in operation by physical variations in   
   burn temp and rotor speed   
   > as for the propane in cars thing yes ANY LPG variant (including   
   methane/butane/propane) can be used in gasoline type engines as long as it is   
   properly mixed using a gas-gas carburetor rather than the liquid-gas   
   carburetor of standard gasoline though    
   some mild complexity of replacing the liquid-only fuel injector system with a   
   dual-state injector means older "dumb" engines do best with a simple carb.   
   swap as they will tend to vary the idle and speed/temp parameters to maintain   
   optimal burn rate and    
   power level if only peaking at 50-80% of the original power if you ran on the   
   designed liquid fuel   
   > I would be planning for a lot of "dual fuel" type small engines soon as   
   gasoline is always gonna be harder to synthesize than LPG types and the supply   
   is still only going down   
   > I might even get a "car" meant to take an internal "grill tank" in the cabin   
   to run as my "range extender" in a primarily solar EV with only the range   
   extender popping out the car to vent the CO from use   
   > since the sun is gonna outlast all of us and when it dies we will die as a   
   species and otherwise there are simple processes that can go from grass waste   
   all the way to propane using only mildly expensive equipment like a cryo-pump   
   for separation of    
   feed gases and a few other common things for dealing with gas-gas reactions   
   like sealed compressors and drying catalysts and the main show of a corona   
   discharge gas cracking reactor which is just an O2 free ozone generator that   
   cracks some of the feed    
   into the product and rejected hydrogen and that being all under 170psi(the   
   peak for propane storage at room temp) is well within the layman to build and   
   make some tiny cash selling to the grillmasters and campers around the usa   
   >   
      
   Isn't Coleman (liquid fuel) mostly hexane? Right boiling point, but   
   terrible octane rating. If you mixed it with ethanol, might work.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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