cectane level: diesel v.s. oil
#2
since cetane rating is how readily the fuel ignites, i suspect the straight diesel would be better in that regard. but i'm no scientist when it comes to this.
i've run as much as 20% oil in my diesel with good results, i would say you're totally fine running even a few gallons oil per tank of fuel, though i can't say what it does to the cetane rating. but if it runs well on it, what does it matter
i've run as much as 20% oil in my diesel with good results, i would say you're totally fine running even a few gallons oil per tank of fuel, though i can't say what it does to the cetane rating. but if it runs well on it, what does it matter
#3
65-Cetane?
I try to burn B100, from Houston BioDiesel whenever I can, and have since Y2K or thereabouts; I'll never forget just how much the 12V BTA 5.9 smoothed out when the petrodiesel segued to the Bdiesel at the combustion chambers; night and day difference!
I asked HBD's owner (and pump jockey/cashier/warehouseman/buyer/salesman/class instructor/etc., you get the picture) about this phenomenon, and FWIW, he told me Bdiesel has not only higher lubricity values, but B100 has a cetane rating around 65+-, whereas USA-spec petroleum diesel runs 54 (the lowest in the world, BTW). Perhaps exaggerated slightly (c'mon--11 points?), but considering the improvement in engine performance I saw, I have no real reason to doubt him.
Eddie, The
I asked HBD's owner (and pump jockey/cashier/warehouseman/buyer/salesman/class instructor/etc., you get the picture) about this phenomenon, and FWIW, he told me Bdiesel has not only higher lubricity values, but B100 has a cetane rating around 65+-, whereas USA-spec petroleum diesel runs 54 (the lowest in the world, BTW). Perhaps exaggerated slightly (c'mon--11 points?), but considering the improvement in engine performance I saw, I have no real reason to doubt him.
Eddie, The
Last edited by The Eddie; 01-01-2013 at 12:39 PM. Reason: Used "'s" when I should'ha used "s'"
#4
Diesel is a distillate and is measured in cetane. WMO is a residual and cannot be measured in cetane levels, but should be measured CCAI or CII, in IMO. In reading, the calculation will normally give a value somewhere between 800 and 880. The lower the value is the better the ignition quality. Fuels with a CCAI higher than 880 are often problematic or even unusable in a diesel engine. CCAI are often calculated under testing of marine fuel.
So I think the question people should be asking is what is the CCAI of WMO?
So, does anyone have a number?
Note, all info above was from Wiki searching cetane.
Ben
So I think the question people should be asking is what is the CCAI of WMO?
So, does anyone have a number?
Note, all info above was from Wiki searching cetane.
Ben
#5
I try to burn B100, from Houston BioDiesel whenever I can, and have since Y2K or thereabouts; I'll never forget just how much the 12V BTA 5.9 smoothed out when the petrodiesel segued to the Bdiesel at the combustion chambers; night and day difference!
I asked HBD's owner (and pump jockey/cashier/warehouseman/buyer/salesman/class instructor/etc., you get the picture) about this phenomenon, and FWIW, he told me Bdiesel has not only higher lubricity values, but B100 has a cetane rating around 65+-, whereas USA-spec petroleum diesel runs 54 (the lowest in the world, BTW). Perhaps exaggerated slightly (c'mon--11 points?), but considering the improvement in engine performance I saw, I have no real reason to doubt him.
Eddie, The
I asked HBD's owner (and pump jockey/cashier/warehouseman/buyer/salesman/class instructor/etc., you get the picture) about this phenomenon, and FWIW, he told me Bdiesel has not only higher lubricity values, but B100 has a cetane rating around 65+-, whereas USA-spec petroleum diesel runs 54 (the lowest in the world, BTW). Perhaps exaggerated slightly (c'mon--11 points?), but considering the improvement in engine performance I saw, I have no real reason to doubt him.
Eddie, The
As far as us being the lowest in the world, I lived in eastern Africa for 2 years and can undoubtedly tell you that their diesel isn't nearly as good as ours. I don't have any hard numbers but I know of several fuel stations that in no way, shape, or form, had a higher cetane rating than what we have in the US.
#6
One thing to remember about cetane is every engine requires a different amount, and every engine has a sweet spot. It is possible to put in to much cetane and get a net loss of power. The cetane flashes off to soon in the injection cycle resulting in less power due to the advanced timing.
Diesel Rod
Diesel Rod
#7
Thread
Thread Starter
Forum
Replies
Last Post
rideracelivemx7
1994.5 - 1997 7.3L Power Stroke Diesel
1
01-03-2011 11:37 PM
Austin Charles
1999 - 2003 7.3L Power Stroke Diesel
9
10-04-2004 08:26 PM