Problematic properties of bio diesel
#1
Problematic properties of bio diesel
I'm seeking for an overall summarization of disadvantages of bio diesel.
So far I found:
- Bio is getting into the engine oil because of incomplete combustion, causing a chemical reaction called Polymerisation
- engine failure due to oil sludge
- stuck piston rings caused by the high amount of phosphor, calcium and magnesium
- low cetane number causing bad cold start abilities
- viscosity of bio is 20 times higher than diesel causing failure in injectors and pump systems(burn up)
- water in fuel, bio has hygroskopic abilities (attracts water)
- lower efficiency due to 12% lower BTU this results in 5 to 10% power loss
These results were released by the Deutz AG, natural fuel division in November 2007
So if this is a damper in the bio world- tell me what can be done to avoid the disadvantages?
So far I found:
- Bio is getting into the engine oil because of incomplete combustion, causing a chemical reaction called Polymerisation
- engine failure due to oil sludge
- stuck piston rings caused by the high amount of phosphor, calcium and magnesium
- low cetane number causing bad cold start abilities
- viscosity of bio is 20 times higher than diesel causing failure in injectors and pump systems(burn up)
- water in fuel, bio has hygroskopic abilities (attracts water)
- lower efficiency due to 12% lower BTU this results in 5 to 10% power loss
These results were released by the Deutz AG, natural fuel division in November 2007
So if this is a damper in the bio world- tell me what can be done to avoid the disadvantages?
Last edited by Deezel Stink3r; 04-29-2011 at 09:57 AM. Reason: spelling-again!
#4
As Ususal, It Depends
The engine and fuel system in question has a bearing. Depending on the specific circumstances, losing the lift pump in certain ways on the early to mid-90's Dodge Cummins platforms could lead to catastrophic, expensive consequences. The late 90's-early 2000s VP-pumped 24vs were also fuel supply-critical in terms of bad things that happen to expensive parts under inadequate fuel supply conditions.
Last edited by NadirPoint; 04-29-2011 at 10:34 AM.
#5
Sounds like Straight vegetable oil. Never really seen Bio do this, I have seen it cause other nasty problems.
In the cold months, yes. I have only used my bio in the summer and fall months.
And IT does! I have the pics to prove it!
Make sure your truck can handle B-20 or less. My powerstroke loves B-50, but the rubber and plastics disintegrate in it above b-20, but then again I had a horrible fuel drying process and I splash mixed the fuel. I have the bill and pics to prove it.
It has to do with your process of making fuel. Bad biofuel kills, good fuel with improper mixing kills, etc.
#7
I recently just tried my first homebrew batch of biodiesel with new cooking oil, the washing process was a nightmare without the right equipment, and I mixed it 10% with petrodiesel, I didnt notice any difference in drivability although it really cleaned up the black smoke at WOT which is awesome. my last batch I washed four times but had trouble getting the water out. I want to continue but no job and no fun tickets doesnt help my situation, i have found that when you first start making bio on a shoestring budget its not cheap but in the long run when I figure out titration, get an oil supplier, finish my processor I beleive it will save me some money. TO HELL WITH FOREIGN OIL!!!!
#9
Depends on your Titration levels of the oil being used, the higher the level, the more chemicals it's going to take to get it where it needs to be.
Without my time to filter my WVO, all I pay for is a small amount of electricity (so small I can't really account for it on my bill), then burn it straight!
In fact, I'm taking oil that is too high in FFA's for bio users and burning it easily.
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