Any programs to calculate base VE
09-04-2007, 01:07 PM
#1
Any programs to calculate base VE Anyone know of a program or tried http://www.megamanual.com/v22manual/vetable.htm to calculate your base VE table?
Phil
Phil
09-04-2007, 01:33 PM
#2
Phil,
You can Only Assume a value for VE. There are to many variable to come up with an actual formula, it has to do with chamber design, bore, valve placement, flame propagation.
I would make all my calculations based on a 100% VE value. That will give you a bassis to tune. If you come up that mathematically your IPW will be 4.2ms at 3000rpm & 100kpa to acheive a 12.5 afr, you run the car and findout that in reality your AFR is 12.2 that means that your actual VE at that rpm and load is ~97.
Am i making sense?
If not let me know i have a great Tunning Manual from a seminar i can Scan and PDF to you.
You can Only Assume a value for VE. There are to many variable to come up with an actual formula, it has to do with chamber design, bore, valve placement, flame propagation.
I would make all my calculations based on a 100% VE value. That will give you a bassis to tune. If you come up that mathematically your IPW will be 4.2ms at 3000rpm & 100kpa to acheive a 12.5 afr, you run the car and findout that in reality your AFR is 12.2 that means that your actual VE at that rpm and load is ~97.
Am i making sense?
If not let me know i have a great Tunning Manual from a seminar i can Scan and PDF to you.
09-04-2007, 01:53 PM
#3
Originally Posted by Alex @ CMS
Phil,
You can Only Assume a value for VE. There are to many variable to come up with an actual formula, it has to do with chamber design, bore, valve placement, flame propagation.
I would make all my calculations based on a 100% VE value. That will give you a bassis to tune. If you come up that mathematically your IPW will be 4.2ms at 3000rpm & 100kpa to acheive a 12.5 afr, you run the car and findout that in reality your AFR is 12.2 that means that your actual VE at that rpm and load is ~97.
Am i making sense?
If not let me know i have a great Tunning Manual from a seminar i can Scan and PDF to you.
You can Only Assume a value for VE. There are to many variable to come up with an actual formula, it has to do with chamber design, bore, valve placement, flame propagation.
I would make all my calculations based on a 100% VE value. That will give you a bassis to tune. If you come up that mathematically your IPW will be 4.2ms at 3000rpm & 100kpa to acheive a 12.5 afr, you run the car and findout that in reality your AFR is 12.2 that means that your actual VE at that rpm and load is ~97.
Am i making sense?
If not let me know i have a great Tunning Manual from a seminar i can Scan and PDF to you.
09-04-2007, 04:21 PM
#6
Originally Posted by Phil99vette
AFAIK The BS3 does not have that but I could be wrong. You do setup CID, Valve, and the other stuff but I don't know if it autopopulates a ve table.
Phil
Phil