X fuel = 1:1 afr?
#1
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X fuel = 1:1 afr?
What is X???
Is there a way to mathmaticly remove or add fuel? I know there is no perfict math but anything to get my closer as randomly pulling fuel the drving the car is not working.
example: i'm at 10.234ms of fuel at 3000rmp 180kpa and seeing 9.8:1 and need to be at 11.5:1.
555cc injectors.
Is there a way to mathmaticly remove or add fuel? I know there is no perfict math but anything to get my closer as randomly pulling fuel the drving the car is not working.
example: i'm at 10.234ms of fuel at 3000rmp 180kpa and seeing 9.8:1 and need to be at 11.5:1.
555cc injectors.
#4
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Not discressing or ignoring your advice, i spent a few hours Sat looking into it.
2300 loaded, any math for kg to ms?
#7
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close enough way:
DAFR: desired AFR
AFR: measured AFR
PW: pulsewidth
NPW: new pulsewidth
change in fuel multiplier ~= (AFR-DAFR)/AFR
(will be negative if you need to remove fuel)
you multiply this by your PW to get the amount to ADD to the PW.
so if you want to get from 9.8 to 11.5....
(9.8-11.5)/9.8 = -.173
NPW = PW + PW*(-.173)
or in your case:
NPW = 10.234 + 10.234*(-.173)
NPW = 8.464 ms
for the Adaptronic, you have a VE table. Just replace NPW and PW with NVE and VE.
DAFR: desired AFR
AFR: measured AFR
PW: pulsewidth
NPW: new pulsewidth
change in fuel multiplier ~= (AFR-DAFR)/AFR
(will be negative if you need to remove fuel)
you multiply this by your PW to get the amount to ADD to the PW.
so if you want to get from 9.8 to 11.5....
(9.8-11.5)/9.8 = -.173
NPW = PW + PW*(-.173)
or in your case:
NPW = 10.234 + 10.234*(-.173)
NPW = 8.464 ms
for the Adaptronic, you have a VE table. Just replace NPW and PW with NVE and VE.
#8
Elite Member
Thread Starter
iTrader: (7)
Join Date: May 2007
Location: Dallas, Tx
Posts: 3,006
Total Cats: 103
close enough way:
DAFR: desired AFR
AFR: measured AFR
PW: pulsewidth
NPW: new pulsewidth
change in fuel multiplier ~= (AFR-DAFR)/AFR
(will be negative if you need to remove fuel)
you multiply this by your PW to get the amount to ADD to the PW.
so if you want to get from 9.8 to 11.5....
(9.8-11.5)/9.8 = -.173
NPW = PW + PW*(-.173)
or in your case:
NPW = 10.234 + 10.234*(-.173)
NPW = 8.464 ms
for the Adaptronic, you have a VE table. Just replace NPW and PW with NVE and VE.
DAFR: desired AFR
AFR: measured AFR
PW: pulsewidth
NPW: new pulsewidth
change in fuel multiplier ~= (AFR-DAFR)/AFR
(will be negative if you need to remove fuel)
you multiply this by your PW to get the amount to ADD to the PW.
so if you want to get from 9.8 to 11.5....
(9.8-11.5)/9.8 = -.173
NPW = PW + PW*(-.173)
or in your case:
NPW = 10.234 + 10.234*(-.173)
NPW = 8.464 ms
for the Adaptronic, you have a VE table. Just replace NPW and PW with NVE and VE.
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