Hello Lyn. Yes, you are missing something. The main problem with SVO as diesel engine fuel is not the high viscosity, but the final boiling point and the low cetane number. Elsbett system have taken action before these disadvantages and have designed a dual air system in the combustion chamber of the piston. This makes it possible to combust SVO completely, since the outer air layer isolates from the inner air layer, where the combustion temperature is high enough. And although the engine is directly injected, it is equipped with pre-chamber injectors, on which coke will form, but works self-cleansing due to the typical design of pre-chamber injectors. Best regards Jan Warnqvist AGERATEC AB
[EMAIL PROTECTED] + 46 554 201 89 +46 70 499 38 45 ----- Original Message ----- From: "Lyn Gerry" <[EMAIL PROTECTED]> To: <Biofuel@sustainablelists.org> Sent: Saturday, June 25, 2005 9:53 PM Subject: Re: [Biofuel] VW Diesel > I went to the site that Keith recommended and it looks fantastic. What this > maker Elsbett sells is a one tank system you can put anything from WVO to > Dino into. If such a system exists, why are people bothing to make biodiesel? > It would be easier, more ecological, economical etc to just use vegetable oil. > > I think about this problem both in the ecolological sense and the Peak oil > sense. Particularly with the latter, the fewer things you have to buy, the less > exposure you have to being gouged by corporations exploiting scarcity. > Anyone with access to a few acres of land and a home made oil press can > create fuel out of a variety of easy to grow crops. > > Am I missing something? > > Lyn > > > > > > >Elsbett. See: > > >http://journeytoforever.org/biodiesel_svo.html > > >Straight vegetable oil as diesel fuel > > > > > >Don't get some two-tank system that probably has copper parts in it > > >and all it does is pre-heat the oil to lower the viscosity, there's > > >a lot more to it than that, even with a Merc. > > > >forgetting to) - switch on and go, stop and switch off, SVO, > > >biodiesel or petro-diesel, in any combination. > > > > We've had a two-tank system for a couple of years but we never used > > it. I just didn't think it addressed the problem fully, and the more > > I learnt the more I thought so. A few months ago we installed a > > single-tank Elsbett system in our Toyota TownAce and we're most > > pleased with it. It does exactly what it claims to do, as we fully > > expected. > > > > http://www.elsbett.com > > > > Best wishes > > > > Keith > > > > > > >On 25 Jun 2005 at 8:46, John Hayes wrote: > > > > > > > You have the 'SVO destroyed my TDI' folks. > > > > > > > > And the 'SVO is just fine' pollyannas. > > > > > > > > > >I went to the TDIclub site as well. I probably only saw a fraction > > >of the posts, > > >and what I saw made me realize that I didn't really do Mike's question justice > > >with my previous answer, so this will be long in an attempt to provide more > > >substantive info. > > > > > >I researched WVO for a while and decided upon the Jetta TDI, which I bought > > >specifically with the intent of doing a WVO conversion. I chose the Jetta even > > >though the golf or beetle would have been more to my personal taste, because > > >the consensus seemed to be that it was desirable to isolate the WVO tank > > >from the passenger area because the tank is heated - a hot metal tank of oil > > >being not the most desirable presence in a passenger compartment > > > > > >There are a variety of systems and kits and ways that people have done these > > >conversions and I have no doubt people have ruined their TDI's with WVO. The > > >TDI has very close tolerances, also why it its such a high performance engine. > > > >From what I have gathered, gumming up the injectors with WVO is one of the > > >serious risks. Critical issues in the system then are well filtered WVO and > > >that it be HOT. > > > > > >Just to clarify matters for any readers, a WVO system is a 2 tank system. Do > > >not ever consider just pouring WVO into your regular fuel tank - that will > > >destroy your TDI. > > > > > >The system I have has : > > > > > >a heated WVO tank and fuel lines (the lines are heated by being bundled > > >beside a line filled with engine coolant) , > > > > > >a filter for the WVO (which has already been prefiltered the remove > > >the obvious > > >particulate fryer gunk before being put in the tank) This filter should be > > >replaced approximately every 2000 miles, > > > > > >and a PURGE switch. > > > > > >The purge switch is a very important part of the system. It is used when > > >switching *back* to diesel from WVO. It pushes the WVO out of the lines and > > >injectors. If you purge for too long, you begin to suck diesel fuel into your > > >WVO tank, but ithat's not really not a problem. > > > > > >The *problem* in a WVO system *without* a purge function arises because, > > >if the WVO is not completely cleared from the engine components , you will > > >begin to dump some WVO into the diesel tank when you shut off the car. > > >After a while, your diesel will be contaminated with WVO. The reason why this > > >is a problem is because your diesel tank is not heated and the WVO is too > > >viscous at "room temperature" to flow through the injectors properly. The > > >WVO must be at 190 degrees F to liquify it adequately. > > > > > >I am not a car mechanic, and the above description is what I've gained from > > >online research and conversations, and this was the data I used to decide > > >whether and what conversion I would do. > > > > > >Hope this helps. > > > > > >Lyn > > > > > > > > > > > > > > > > > > > > And the professional 'we need more scientific data' skeptics. > > > > > > > > And the 'yes, we need data but your studies are too old' counter-skeptics. > > > > > > > > Yup. I think that about sums it up. > > > > > > > > jh > > > > > > > > > > > > Keith Addison wrote: > > > > > Hello John > > > > > > > > > >> Just FYI, there is a major debate on SVO use raging at TDIclub.com > > > > >> right now. It's actually spilled over into 3 different threads in the > > > > >> biodiesel section of the forums(sic). > > > > > > > > > > > > > > > Would you perhaps be up to giving us a summary? > > > > > > > > > > Best wishes > > > > > > > > > > Keith > > > > > > > > > > > > > > >> jh > > > > >> Lyn Gerry wrote: > > > > >> > > > > >>> Hi Mike and All, > > > > >>> > > > > >>> I just had my 1999 Jetta TDI converted, and so far, I'm really > > > > >>> pleased. I live in central New York State and the conversion was done > > > > >>> by Lucas MacDonald at Vegpower > > > > >>> > > > > >>> http://www.vegpower.com/ > > > > >>> > > > > >>> They can do the work or you can buy components from them. Lucas is > > > > >>> also an experienced VW/volvo mechanic. > > > > >>> > > > > >>> Lyn > > > > >>> > > > > >>> > > > > >>> On 22 Jun 2005 at 16:26, Mike wrote: > > > > >>> > > > > >>> > > > > >>>> Has anyone ever converted a VW diesel to run on > > > > >>>> leftover oil from restaurants or fast foods like > > > > >>>> Krispy Kreeme and McDonalds etc... I'm about to do it > > > > >>>> and want to follow the lead of someone else who's done > > > > >>>> it. Thanks. > > > > > > _______________________________________________ > > Biofuel mailing list > > Biofuel@sustainablelists.org > > http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org > > > > Biofuel at Journey to Forever: > > http://journeytoforever.org/biofuel.html > > > > Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): > > http://www.mail-archive.com/biofuel@sustainablelists.org/ > > > > > > _______________________________________________ > Biofuel mailing list > Biofuel@sustainablelists.org > http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): > http://www.mail-archive.com/biofuel@sustainablelists.org/ > > > _______________________________________________ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
