Skip to Content.
Sympa Menu

permaculture - Re: [permaculture] biofuels

permaculture@lists.ibiblio.org

Subject: permaculture

List archive

Chronological Thread  
  • From: trevor william johnson <john2116@msu.edu>
  • To: permaculture <permaculture@lists.ibiblio.org>
  • Subject: Re: [permaculture] biofuels
  • Date: Tue, 18 Mar 2008 22:38:40 -0400

where did you get this info. can you please send a source.

trevor


No, it is making ethanol and running the diesels on a
ethanol/biodiesel mix. An unmodified diesel can run 80% ethanol/ 20%
biodiesel. Slightly modified diesels -- usually just adding an extra
head gasket to lower the compression ration to 18:1 or less allows you
to use almost pure ethanol with just 1%-2% biodiesel to provide the
lubrication for the injection pump and help with ignition. Further
modification can turn a diesel into a super efficient ethanol engine --
such as adding a distributor and replacing the glowplugs with sparkplugs
and replacing the injectors and pump with propane injectors, then
heating the ethanol so it vaporizes.
Ethanol is very high octane fuel, so it needs a compression ratio of
at least 14:1 to burn efficiently. 16:1 is much better.





Archive powered by MHonArc 2.6.24.

Top of Page