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#1
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Sorry, Jax is totally correct. You are wrong.
Ethanol and water forms an azeotrope .... no 'free' water, just water in an emulsified form .... beneficial to engine performance. In article le.rogers.com, Bowgus wrote: Wrong. "JAXAshby" wrote in message ... alcohol and water are 100% missible (sp?) with each other, meaning there is no such thing as a water saturated alcohol solution. Ethanol, or alcohol, mixes with any water. It's used up here by some in the winter (auto engines) to pick up any condensation and so on to prevent gas line freeze. So, if the alcohol in the mix becomes saturated (with water), a drop in temperature will cause that water to be dumped, leaving the water in the fuel system ... especially not good in injected engines. If that's what's happening, maybe a water separator mounted close to the engine might be an idea? The dumping of water by saturated ethanol fuel caused by a drop in temperature is a fact ... but a 10% mix ... ??? "Larry Weiss" wrote in message ... Both of my power boats have developed severe engine hesitation problems. They run okay at idle but sputter and stall when revved. My mechanics have complained that they are seeing this problem left and right - and are blaming it on the gasoline, which around here (Long Island, NY) now contains 10% ethanol. I know ethanol is not good for rubberized fuel lines, but did not know it caused running problems (unless the fuel lines are deteriorating and clogging). The gas in each boat was purchased at a different fuel dock. If my mechanics are correct, this is a serious regional (national?) problem. Anyone else experiencing difficulty? Any comments or suggestions? How can we get gasoline without ethanol in it? How is the marine industry addressing this? Larry Weiss "...Ever After!" "a little after..." |
#2
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And when the temperature drops ... although I suppose some of you guys don't
live where that happens ... the alcohol can get dumped. Refer to the excellent link posted by John Wentworth to "2003 Marine Manufacturere Fuel Recommendations" at http://www.ethanolrfa.org/2003marine.pdf "Rich Hampel" wrote in message ... Sorry, Jax is totally correct. You are wrong. Ethanol and water forms an azeotrope .... no 'free' water, just water in an emulsified form .... beneficial to engine performance. In article le.rogers.com, Bowgus wrote: Wrong. "JAXAshby" wrote in message ... alcohol and water are 100% missible (sp?) with each other, meaning there is no such thing as a water saturated alcohol solution. Ethanol, or alcohol, mixes with any water. It's used up here by some in the winter (auto engines) to pick up any condensation and so on to prevent gas line freeze. So, if the alcohol in the mix becomes saturated (with water), a drop in temperature will cause that water to be dumped, leaving the water in the fuel system ... especially not good in injected engines. If that's what's happening, maybe a water separator mounted close to the engine might be an idea? The dumping of water by saturated ethanol fuel caused by a drop in temperature is a fact ... but a 10% mix ... ??? "Larry Weiss" wrote in message ... Both of my power boats have developed severe engine hesitation problems. They run okay at idle but sputter and stall when revved. My mechanics have complained that they are seeing this problem left and right - and are blaming it on the gasoline, which around here (Long Island, NY) now contains 10% ethanol. I know ethanol is not good for rubberized fuel lines, but did not know it caused running problems (unless the fuel lines are deteriorating and clogging). The gas in each boat was purchased at a different fuel dock. If my mechanics are correct, this is a serious regional (national?) problem. Anyone else experiencing difficulty? Any comments or suggestions? How can we get gasoline without ethanol in it? How is the marine industry addressing this? Larry Weiss "...Ever After!" "a little after..." |
#3
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On Wed, 22 Sep 2004 04:28:58 GMT,
Rich Hampel wrote: Sorry, Jax is totally correct. You are wrong. Ethanol and water forms an azeotrope .... no 'free' water, just water in an emulsified form .... beneficial to engine performance. So does this mean that a 55 gal drum of water, will form an emulsion when you add 1 drop of Ethanol to it? this doesn't make sense. Surely there's some point at which adding more water to the ethanol will leave a non-emulsified amount of water? In article ble.rogers.com, Bowgus wrote: Wrong. "JAXAshby" wrote in message ... alcohol and water are 100% missible (sp?) with each other, meaning there is no such thing as a water saturated alcohol solution. -- Jim Richardson http://www.eskimo.com/~warlock Proud Member of THRUSH: the Technological Hierarchy for the Removal of Undesirables and the Subjugation of Humanity |
#4
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On Wed, 22 Sep 2004 04:28:58 GMT, Rich Hampel
wrote: Sorry, Jax is totally correct. You are wrong. Ethanol and water forms an azeotrope .... no 'free' water, just water in an emulsified form .... beneficial to engine performance. The first line should warn you that a mistake is in the offing. Here are some definitions: "azeotrope" a mixture of liquids with a constant boiling temperature - because the vapor has the same composition as the liquid. Contrast this with a mix of grain acohol (aka ethanol) and water: when heated, the ethanol evolves preferentially: this process is called "distillation" An "emulsion" is a preparation of two immiscible liquids: though they will not mutually dissolve, finely divided particles of one phase remain stable in the other component, often with a milky appearance: mayonnaise is a classic example. The problem in the lines quoted is the confusion between water/oil or water/gasoline mixes which CAN emulsify - and water/alcohol mixes which DO NOT emulsify. Brian Whatcott Altus OK |
#5
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Nope 10% ethanol mixed with gasoline will result in the water component
forming into an emulsified form which doesnt separate readily. Actually the additional water content helps increase the "octane" number, and also helps to clean the piston ring grooves, blows the carbon out of the combustion chamber, etc. Some engines (back in 'muscle car days') used water injection to boost power output while helping to cool the combustion chambers. article gers.com, Bowgus wrote: Ethanol, or alcohol, mixes with any water. It's used up here by some in the winter (auto engines) to pick up any condensation and so on to prevent gas line freeze. So, if the alcohol in the mix becomes saturated (with water), a drop in temperature will cause that water to be dumped, leaving the water in the fuel system ... especially not good in injected engines. If that's what's happening, maybe a water separator mounted close to the engine might be an idea? The dumping of water by saturated ethanol fuel caused by a drop in temperature is a fact ... but a 10% mix ... ??? "Larry Weiss" wrote in message ... Both of my power boats have developed severe engine hesitation problems. They run okay at idle but sputter and stall when revved. My mechanics have complained that they are seeing this problem left and right - and are blaming it on the gasoline, which around here (Long Island, NY) now contains 10% ethanol. I know ethanol is not good for rubberized fuel lines, but did not know it caused running problems (unless the fuel lines are deteriorating and clogging). The gas in each boat was purchased at a different fuel dock. If my mechanics are correct, this is a serious regional (national?) problem. Anyone else experiencing difficulty? Any comments or suggestions? How can we get gasoline without ethanol in it? How is the marine industry addressing this? Larry Weiss "...Ever After!" "a little after..." |
#6
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WRONG! No matter how much alcohol you add to gasoline, once it is mixed, any
water in the alcohol will separate almost immediately. Water does nothing to increase the octane of any fossil fuel. When water injection was used on automobiles it was used to slow the burn time of cheap low octane gasoline. By adding water you could keep your timing advanced to specs without the clatter of a pinging engine from detonation on high compression engines. One primary reason alcohol is added to fuel is its ability to retain more oxygen so when added to gasoline you actually end up with a more efficent burn. Its an EPA thing. Alcohol actually has a lower octane rating but because of its added oxygenation properties, its benficial when added to gasoline. From: Rich Hampel Date: 9/21/04 11:26 PM Central Daylight Time Message-id: Nope 10% ethanol mixed with gasoline will result in the water component forming into an emulsified form which doesnt separate readily. Actually the additional water content helps increase the "octane" number, and also helps to clean the piston ring grooves, blows the carbon out of the combustion chamber, etc. Some engines (back in 'muscle car days') used water injection to boost power output while helping to cool the combustion chambers. |
#7
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WRONG! No matter how much alcohol you add to gasoline, once it is mixed, any
water in the alcohol will separate almost immediately where did you learn this? please be specific, as millions of drivers with experience in cold winter states disagree with you. |
#8
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#9
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mod knock it off. even 25% alcohol to gas hardly raises the octane
---------------- rating ------------------ at all. you have been reading 1940's Popular Mechanix mags again. tsk tsk Depends on the alcohol, but the most common added to gasoline are ethanol and methanol, each with octane numbers of 100 or so. They boost the octane. |
#10
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Reduction of CO emissions during warm-up for carbureted engines.
mum mum vador, knock it off. for all practical purposes there are no carbueted auto engines on the road for a very long time. I believe that last such sold as new was the miserable CVCC engine, and that was well more than 25 years ago. |
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