So I'm trying to determine how to convert the .Bin values into a standard VE Percent (%) from the units "gm * K / kPa".
Based on what I know the Engine Size is used, but other than that I'm not sure. I would like to put out an .xdf for my LS1 Boost OS that uses the more standard VE % rather than the "gm * K / kPa".
If you know anything about how to convert please post and I would be very happy to add it to my xdf. If I'm able to figure it out on my own I will post it up for others to use.
So far I know that to convert to "gm * K / kPa" the formula "X / 5120" is used.
Engine VE Percent
Engine VE Percent
LS1 Boost OS V3 Here. For feature suggestions post in here Development Thread. Support future development ->Patreon.
Re: Engine VE Percent
This will get you almost the same numbers as efi live got for the percentage. I am really unsure where the *0.4069 comes from. It can be derived from cyl volume which means it wont work for other volumes than 5.7. I will look for some other dependancies.
(X*0.0195312500)*0.4069
(X*0.0195312500)*0.4069
Re: Engine VE Percent
(X*0.0195312500)*0.38832
This is what it comes for 6.0
If you find the relation between multiplier and engine volume, a better formula can be made.
This is what it comes for 6.0
If you find the relation between multiplier and engine volume, a better formula can be made.
Re: Engine VE Percent
0.2896402
Looks like this is the scalar for engine volume to get you the multiplier
0.7458801[litres]*0.38832=0.2896402
X*0.000030517578=cyl volume
0.2896402/cyl volume= ve multiplier
(X*0.0195312500)*(0.2896402/(A*0.000030517578))=ve %
x= raw ve value
A=raw cyl volume value
Looks like this is the scalar for engine volume to get you the multiplier
0.7458801[litres]*0.38832=0.2896402
X*0.000030517578=cyl volume
0.2896402/cyl volume= ve multiplier
(X*0.0195312500)*(0.2896402/(A*0.000030517578))=ve %
x= raw ve value
A=raw cyl volume value
Re: Engine VE Percent
That is extremely close to the gas constant of air (28.9647 g/mol) Source
Thanks for the quick help!!! Now I just need to put it into the xdf and make sure it's working.
Thanks for the quick help!!! Now I just need to put it into the xdf and make sure it's working.
LS1 Boost OS V3 Here. For feature suggestions post in here Development Thread. Support future development ->Patreon.
Re: Engine VE Percent
Ok so here is what I have.
VE (%) = (X / 5120) * (28.96 / A)
X = Raw VE Value
5120 = Scaler to "gm * K / kPa"
A = Cylinder Volume (liters)
28.96 = Gas Constant for Air (g/mol)
Cylinder Volume (liters) = Y / 32768
Y = Raw Cylinder Volume
32768 = Scaler to "liters"
It seems to look like it is giving pretty reasonable values. Hopefully others can confirm.
VE (%) = (X / 5120) * (28.96 / A)
X = Raw VE Value
5120 = Scaler to "gm * K / kPa"
A = Cylinder Volume (liters)
28.96 = Gas Constant for Air (g/mol)
Cylinder Volume (liters) = Y / 32768
Y = Raw Cylinder Volume
32768 = Scaler to "liters"
It seems to look like it is giving pretty reasonable values. Hopefully others can confirm.
LS1 Boost OS V3 Here. For feature suggestions post in here Development Thread. Support future development ->Patreon.