Helo Ben, Jim Ben wrote:
>From what I understand from the research done so far straight vegetable oil >burning does not seem to be coking or gumming components if correct temps >are reached. That seems to be the consensus, but there are research studies that disagree. >(This is from hundreds of thousands of miles up to maybe a >couple of million miles collectively - not that much compared with biodiesel >studies. Ben, the research done so far and the mileage done so far are not particularly related. I can't think of any long-term, high-mileage research on SVO, can you? Published, peer-reviewed research studies, that is. There are two online databases where SVO users have been recording their results, steadily building up an empirical case, but that's a different matter, and it's not so easy to extract what many would call reliable information from it: lots of variables, both among cases and the usual ones with user-recorded data. For instance, the US EPA would not call it reliable information, of the kind they need before they can register SVO as a legal, on-road fuel in the US - which currently it's not. For more information on this issue search for "Detrick" in the Biofuel archives: http://archive.nnytech.net/index.php?list=biofuel >This entails switching over after enough heat is present in the >system and allowing adequate shutdown times. Most seem to agree that target >temp is at least 70 C. I think the ACREVO study says 150 deg C for DI diesels - much too hot! Unless you add 9% of 95% ethanol, as you're planning to do, then it comes down to 80. There's definitely more involved than just the viscosity. http://journeytoforever.org/biodiesel_TDI.html The TDI-SVO controversy >I think the combination of B100 in the stock tank and veggie in the second >tank makes a lot of sense from a gumming and engine cleaning standpoint in >that if tiny amounts of coking or gumming occur the solvent action in the >alcohol might help to remove it regularly. What alcohol? There isn't any alcohol in biodiesel, unless you don't wash it (NOT recommended!). Then the excess will still be there, but that's the only free alcohol there is. But yes, biodiesel cleans well. >This is only speculation. Many >recommend a solid Italian tune up often, while burning veggie oil or while >burning biodiesel. With veggie oil, it depends, on the car, the SVO system and the oil used, both type and condition. With biodiesel, depending only on it being standard-spec fuel, that shouldn't be necessary any more so than with petro-diesel, and maybe less so. >----- Original Message ----- >From: "Jim Miller" <[EMAIL PROTECTED]> >To: <biofuels-biz@yahoogroups.com> >Sent: Monday, November 03, 2003 10:22 AM >Subject: Re: [Re: [biofuels-biz] Re: [biofuel] diesel or hybrid? Why not >Both!!] > > > > I have read scientific articles which state that using straight vegetable >oil will gum the injectors, especially on cold starts and shutdowns. I am >aware of the dual tank approach, where you start your diesel on 100% >petrodiesel and after warm up, shift to vegetable oils, then back to >petrodiesel at shutdown. The manufacture says nothing about gum and I would >suspect that using straight vegetable oil under any conditions would gum the >injectors and other parts of the engine. Some studies have found that, others not. Some users have found that too, others not. It also depends on the oil being used, some polymerize much more easily than others. (Biodiesel made from those oils will also polymerise, but not as quickly.) It's something of an SVO myth that SVO can be produced from decentralized small oil expellers - ie straight from the plant. SVO must be refined first, including degumming. See "Straighter-than-straight vegetable oils as diesel fuels": http://journeytoforever.org/biodiesel_SVO-Allen.html Anyway, with an older Mercedes, say, which seems to be the ideal choice, and a good two-tank system, all indications are that you'll be just fine. > > Diesel electric systems have been used on train engines for years. Why >that approach has not been adapted to the auto industry is a mystery. Yes, isn't it a mystery! What exactly is the problem? >The >hybird diesel electric would seem to be the best solution, especially if >B100 is used as the fuel. Certainly a good solution, but the new-generation diesels from Europe and Japan are really good and getting better, and have the advantage that they won't baffle most mechanics, or at least nothing a bit of training won't solve. Not sure whether that would apply to hybrids, though I'm sure it will do eventually. regards Keith > > I would like to know more about the sulfur reduction enzyme, also. > > > > Jim Miller > > > > Tejinder Singh <[EMAIL PROTECTED]> wrote: > > Any comments on use of Soltron(Enzyme based additive) in reduction of >Sulphur > > dioxide, NOx etc.?! The company makes big claims. > > > > Tejinder > > > > > > MH <[EMAIL PROTECTED]> wrote: > > > > > If you want low emissions (in a lifecycle sense) try straight vegetable > > oil! > > > No methanol/ethanol production and of course, way cleaner from source to > > > sink than anything petroleum. > > > > I have tried straight vegetable oil on my bicycle chain as a > > lubricant but its not something I'll do again. ------------------------ Yahoo! Groups Sponsor ---------------------~--> Rent DVDs from home. Over 14,500 titles. Free Shipping & No Late Fees. Try Netflix for FREE! http://us.click.yahoo.com/I3w.vC/hP.FAA/3jkFAA/9bTolB/TM ---------------------------------------------------------------------~-> Biofuels at Journey to Forever http://journeytoforever.org/biofuel.html List messages are archived at the Info-Archive at NNYTech: http://archive.nnytech.net/ Please do NOT send Unsubscribe messages to the list address. 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