Effects of E10 on small engines
Effects of E10 on small engines
(OP)
when using ethanol blend in small engines, what problems will this cause in the future to equipment
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
Effects of E10 on small engines
|
RE: Effects of E10 on small engines
Run lean and burn valves and pistons.
Detonate.
Corrode metal and plastic components it contacts.
Regards
eng-tips, by professional engineers for professional engineers
Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips Fora.
RE: Effects of E10 on small engines
Methanol required flushing the fuel system, but ethanol did not give any problems between uses.
Almost forgot, I did boost the CR and advance the ign. timing on all.
Rod
RE: Effects of E10 on small engines
It's only 10% Ethanol, so mixture has a stoichiometric air to fuel ratio of 14.1 vs 14.7 or about 4% richer.
Regards
eng-tips, by professional engineers for professional engineers
Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips Fora.
RE: Effects of E10 on small engines
RE: Effects of E10 on small engines
A good question, though...E-10? Why bother?
Rod
RE: Effects of E10 on small engines
I think it might be a cheap octane booster.
Regards
eng-tips, by professional engineers for professional engineers
Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips Fora.
RE: Effects of E10 on small engines
MTBE: Methyl tertiary butyl ethane is a gasoline additive which increases octane rating.
I think that MTBE is banned pretty much nationwide now. So the next cheapest alternative is ethanol, which works as both an oxygenate and octane booster. Unfortunately it takes more energy to make ethanol than you get from the fuel.....but that is for another post.
ISZ
RE: Effects of E10 on small engines
RE: Effects of E10 on small engines
RE: Effects of E10 on small engines
It takes more energy to make ANY fuel than you could ever hope to gain from it. This is a consequence of the first and second laws of thermodynamics. The problem with replacing fossil fuels is that legacy fuels are already made up for us. The energy was absorbed by the plants eaten by dinosaurs. We didn't really have to make it. We just fix it up a bit and use it.
I'm personally against the use of ethanol for economic/political reasons (regarding the shifting of crop priorities) and for its pollutants (such as acetaldehyde). I'm not in charge, however, so I'll make do with what is given. I would imagine (disclaimer: guess) that the lower combustion temperatures and richer mixtures would be more favorable to reducing nitrous oxide emissions.
As far as small engines... they rarely last long enough to really worry about much. Something else will break before the fuel eats the carburetor diaphragm. Aren't they using plastic pistons in those things these days? It's horrible, but it pays their bills I guess.
RE: Effects of E10 on small engines
Not to go off on a tangent (though that's pretty much what i'm doing), peak oil is a dangerous theory especially since there are contradictory theories that not only hold water- but aren't calling for massive changes to our energy infrastructure.
RE: Effects of E10 on small engines
RE: Effects of E10 on small engines
In addition to agriculturally based ethanol, it is also made from ethylene. Ethylene is made from hydrocarbons downstream of the refining or gas processing markets. For automotive use, congress wants farm based ethanol to assure votes from farmers. This also gets votes if considered as renewable energy, regardless of the natural gas used for the fertilizer and additional energy for the conversion.
Ethylene based ethanol is used in the food and pharmiceutical products. Agricultural ethanol is used in our gasoline engines. Makes perfect sense to me.