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Question about ethanol gas in two stroke...
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[QUOTE="Rich Rohrich, post: 1467913, member: 16241"] Rod - The opposite actually happens in terms of laminar flame speed. As the percentage of alcohol increases in the mix with hydrocarbon fuels the flame speed actually increases slightly, but for our purposes it isn't enough to matter in my experience. Pure alcohol may burn at a different rate than a hydrocarbon based fuel, but I don't have enough experience switching a specific engine combination from hydrocarbon fuel to pure alcohol to be able to offer anything concrete. You are correct that alcohol in it's pure state has some really useful characteristics as an ultra-high performance fuel and it certainly has different jetting requirements. I wrote an article a while back on just that subject. I'll see if Okie can re-link it from the DRN Archives. In the meantime if anyone is interested in more info on the subject (assuming you haven't nodded off already :) ) Here's are a couple of papers that you can read for free online that go into great detail on the subject. SAE Paper 2008-01-1591 Characteristics of Ethanol, Butanol, Iso-Octane and Gasoline Sprays and Combustion from a Multi-Hole Injector in a DISI Engine J. Serras-Pereira and P.G. Aleiferis University College London, UK D. Richardson and S. Wallace Jaguar Advanced Powertrain Engineering, Coventry, UK Laminar Flame Characteristics of C1–C5 Primary Alcohol-Isooctane Blends at Elevated Temperature Qianqian Li *, Wu Jin and Zuohua Huang * [/QUOTE]
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Question about ethanol gas in two stroke...
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