xxxxx
Hazard to Others
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Registered: 21-5-2004
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brake fluid as engine coolant
dot 5 brake fluid has a boiling point of 500F. i was wondering if brake fluid might make a good engine coolant for a small displacement (six stroke
diesel, or not) motorcycle or moped, so the engine could run hotter and more efficiently. i also wanted to ask how hot a motorcycle engine could be
run without damaging it and how much fuel might be saved.
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evil_lurker
National Hazard
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Heat is generally not good for a motor.
Heat causes metal to swell slightly, and hence the reasons motors lock up when they overheat. Furthermore more heat equals less efficancy because as
the hotter the motor gets, the less air goes into the cylinders. Furthermore, too much heat inside a diesel could promote detonation.
DOT brake fluid is not designed for use inside an internal combustion engine... it absorbs moisture, so there goes your idea for a 6 stroke using
that.
Not all chemicals are bad. Without chemicals such as hydrogen and oxygen, for example, there would be no way to make water, a vital ingredient in
beer.
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MagicJigPipe
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Dude, like evil said, heat causes INefficiency! Why do you think people put cold air intakes on their vehicles and try to keep the temperatures down
as far as possible? Also, part of the reason nitrous oxide works so well is because of the cooling effect it has.
"There must be no barriers to freedom of inquiry ... There is no place for dogma in science. The scientist is free, and must be free to ask any
question, to doubt any assertion, to seek for any evidence, to correct any errors. ... We know that the only way to avoid error is to detect it and
that the only way to detect it is to be free to inquire. And we know that as long as men are free to ask what they must, free to say what they think,
free to think what they will, freedom can never be lost, and science can never regress." -J. Robert Oppenheimer
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dann2
International Hazard
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The DOT 3 may have little or no lubricating ability.
As far as getting higher efficiency from hotter running engines, the diesel ceramic engine was being explored.
It ran at a very high temperature. If you could have metal or ceramic that would take the mechanical stress at higher temperatures you will get an
engine with greater efficiency than one that is cooled with water.
Never heard of the ceramic engine in a commercial vehicle.
I believe the cool air intakes and intercoolers on engines are more got to do with getting more power from a given engine, not the same as greater
fuel efficiency.
Dann2
[Edited on 9-5-2008 by dann2]
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MagicJigPipe
International Hazard
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Yes, it increases the amount of air that reaches the combustion chamber thereby allowing better and more complete combustion of the fuel. In order to
increase efficiency, certainly the fuel to air ratio would HAVE to be changed. In other words, it would need a different engine setup so having more
heat in a normal engine would be BAD.
"There must be no barriers to freedom of inquiry ... There is no place for dogma in science. The scientist is free, and must be free to ask any
question, to doubt any assertion, to seek for any evidence, to correct any errors. ... We know that the only way to avoid error is to detect it and
that the only way to detect it is to be free to inquire. And we know that as long as men are free to ask what they must, free to say what they think,
free to think what they will, freedom can never be lost, and science can never regress." -J. Robert Oppenheimer
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