At Fri, 16 Feb 2001 09:44:32 -0600, you wrote: Art, I think that I would try S. Spence's / K. Addison's suggestion - start and shut down with diesel (bio-d is supposedly a great cleaner for the motor) and run on clean VO. That way you could possibly minimize the amount of transesterification you would need to do. I'm not sure how to have 2 fuels in the vehicle unless you have a small reservoir (washer fluid size) of bio-d under hood for starting/shutdown and VO in tank? Just some thoughts. Keith and Steve certainly have their "ducks in more of a row" on this subject than I do. Take advantage>
Ciao, Geoff >Geoff, >Wow, great info. It seems that esterification is the way to >go. I'm doing some not-so-scientific tests on using dino-d/filtered WVO >combinations. The only diesel engine I have to experiment on is an OLD, >small, hand-crank started Kubota 902cc that I fitted with a belt-driven >120vac, 3.5kw alternator. Has a small radiator, but no water pump or >hoses, so it's hard to get usable heat from it to heat up SVO for tests. > >I will happily receive any other info you have, or come >across. This is a huge learning experience for me. Contacted a man >yesterday about funding for a biodiesel production facility here in CR. > >Thanks for all your help, > >- Art > >At 2/15/2001 11:34 PM, you wrote: >>Hi Art, >> >>Sorry so slow in responding to your e-mail on bio-d maintenance issues. >>The thesis I have on hand is actually called "Economic analysis of >>rapeseed methyl esters" but does review a bit of the earlier work using >>straight veg. oil in diesels. I think it was Steve Spence that wrote >>"there are no coking of injectors if motor is started and shutdown >>using diesel (bio or dino)." >> >>Regarding the above noted review of work: 1)veg oil(VO) had higher peak >>injection pressure 2) VO had poor atomization (injector) 3)thermal >>efficiency slightly lower than diesel --most problems appear to be >>viscosity related and authors suggest reducing viscosity by A) blending >>VO with dino-d or B) transesterification (biod). >> >>Research from International Harvester showed sunflower oil blended with >>dino-d resulted in: progressive deterioration of atomization at >>injectors as oil level was increased, build-up of deposits at the >>injectors, valves, pistons, and liners after a short period of >>operation. Others have observed sticking piston rings, significant wear >>and tear of piston and liners, excessive blowby and carbon deposits, >>noisy idle, to name a few. >> >>I can continue to look into this for you but it appears that the >>glycerine in the VO (they are glycerine esters) can polymerize to form a >>plastic solid (disacryl) as well as leading to incomplete combustion. >>They (Dr. C. Peterson et al) support transesterification as the >>solution. Hope that's a little help. Let me know. >> >> >>Ciao, >> >> >> >>Geoff > > >------------------------ Yahoo! Groups Sponsor ---------------------~-~> >eGroups is now Yahoo! Groups >Click here for more details >http://click.egroups.com/1/11231/0/_/837408/_/982352907/ >--------------------------------------------------------------------- _-> > >Biofuel at Journey to Forever: >http://journeytoforever.org/biofuel.html >To unsubscribe, send an email to: >[EMAIL PROTECTED] > ------------------------ Yahoo! Groups Sponsor ---------------------~-~> eGroups is now Yahoo! Groups Click here for more details http://click.egroups.com/1/11231/0/_/837408/_/982368344/ ---------------------------------------------------------------------_-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html To unsubscribe, send an email to: [EMAIL PROTECTED]
