Thread: TD5 BioD?

Originally Posted by dobbo

Finally a reason why,

I have a challenge who will take me up on it


Why don't you eat chip fat and drink cheap vodka for a week and see what it does to your body, then think about putting it into your TD5

That sounds like a normal week. Except replace Vodka with Bourbon.

Originally Posted by Slunnie

I was under the impression that every 3db gain was a double in noise. eg 93db is twice as loud as 90db, and 96db was twice as loud as 93db.

Also I understood that BioD does have better lubricity, but that may change under the extreme pressure generated in the unit injectors.

Slunnie - you are completely correct - 3db is a doubling of the SPL (Sound Pressure Level) - pressure of the sound waves - which effectively means a doubling of the noise level.

Bob - please quantify/qualify "slighly less oomph" in terms of chemical properties or reaction kinetics/thermodynamics.

Originally Posted by isuzurover

Slunnie - you are completely correct - 3db is a doubling of the SPL (Sound Pressure Level) - pressure of the sound waves - which effectively means a doubling of the noise level.

(snip)

But note that because the response of the ear is logarithmic, 3db is also just about the smallest difference in loudness you can hear.
John

I saw a woman at the local pony club on Sunday who had a chipped TD5 disco running on Bio for the last 6 months. It didn't sound to different to mine. She boasted it could pull their horse float at 120kph.
My standard TD5 can do that easily.
Does the Bio rob it of so much power (sorry oomph) that it needs the mod chip to run normal?
How much difference does a mod chip make to a disco?

Both floats were of similar weight

The following is from Jon Van Gerpen - from the University of Idaho, who has done a great deal of development on biodiesel with the University..

"Biodiesel has a lower energy content (lower heating value of 37.2 MJ/kg for soybiodiesel) than No. 2 diesel fuel (42.6 MJ/kg for No. 2 diesel fuel). On a weight basis, the energy level is 12.5% less. Since biodiesel is more dense than the diesel fuel, the energy content is only 8% less on a per gallon basis (32.9 MJ/liter compared with 36.0 MJ/liter).

Since diesel engines will inject equal volumes of fuel, diesel engine operators may see a power loss of about 8.4%. In some cases, the power loss may be even less than this because biodiesel's higher viscosity can decrease the amount of fuel that leaks past the plungers in the diesel fuel injection pump leaving more fuel to be injected."


The original article is on the following website:
http://www.uidaho.edu/bioenergy/Publications.htm

so there.. "oomph", now defined..

regards,
biodiesel bob

Originally Posted by tannery

The following is from Jon Van Gerpen - from the University of Idaho, who has done a great deal of development on biodiesel with the University..

"Biodiesel has a lower energy content (lower heating value of 37.2 MJ/kg for soybiodiesel) than No. 2 diesel fuel (42.6 MJ/kg for No. 2 diesel fuel). On a weight basis, the energy level is 12.5% less. Since biodiesel is more dense than the diesel fuel, the energy content is only 8% less on a per gallon basis (32.9 MJ/liter compared with 36.0 MJ/liter).

Since diesel engines will inject equal volumes of fuel, diesel engine operators may see a power loss of about 8.4%. In some cases, the power loss may be even less than this because biodiesel's higher viscosity can decrease the amount of fuel that leaks past the plungers in the diesel fuel injection pump leaving more fuel to be injected."


The original article is on the following website:
http://www.uidaho.edu/bioenergy/Publications.htm

so there.. "oomph", now defined..

regards,
biodiesel bob

Thanks Bob. So Biodiesel generally has a higher cetane number than dino diesel - which means it ignites more easily and burns faster, however a slightly lower energy content, so it doesn't produce quite as much power.

The higher cetane number explains why most biodiesel users report that the engine runs better and is quieter on biodiesel.

Straight canola oil (SVO/WVO) has a Cetane number equivalent to normal diesel, an equivalent heating value, and a higher viscosity - so many people have reported INCREASED performance when running SVO.

See table below:

Comparison of properties of diesel, canola oil and commercial US biodiesel
.
Diesel

Canola Oil

Biodiesel

Density kgL-1 @ 15.5 deg C
0.84

0.92

0.88

Calorific value MJL-1
38.3

36.9

33-40

Viscosity mm2s-1 @ 20 deg C
4-5

70

4-6

Viscosity mm2s-1 @ 40 deg C
4-5

37

4-6

Viscosity mm2s-1 @ 70 deg C
-

10

-

Cetane number
45

40-50

45-65

From "Waste Vegetable Oil as a Diesel Replacement Fuel" by Phillip Calais, Environmental Science, Murdoch University, Perth, Australia, and A.R. (Tony) Clark, Western Australian Renewable Fuels Association Inc.

Originally Posted by isuzurover

Slunnie - you are completely correct - 3db is a doubling of the SPL (Sound Pressure Level) - pressure of the sound waves - which effectively means a doubling of the noise level.

Bob - please quantify/qualify "slighly less oomph" in terms of chemical properties or reaction kinetics/thermodynamics.

Ben, I'm a Brickie for phuksakes keep your post in "dumb english" for me 'slightly less oomph is good, to me thermodynamics sounds like a fashion accessory I enjoy your posts but the 3 hours of google deciphering them is killing me (all in good humor) the only people I see in white coats are the ones telling me to calm down its gonna be alright

Originally Posted by DirtyDawg

Ben, I'm a Brickie for phuksakes keep your post in "dumb english" for me 'slightly less oomph is good, to me thermodynamics sounds like a fashion accessory I enjoy your posts but the 3 hours of google deciphering them is killing me (all in good humor) the only people I see in white coats are the ones telling me to calm down its gonna be alright

LMAO