CZ & Hymee Scanalyser?
07-29-2005, 08:52 PM
#76
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Exactly. And why you need to worry about the stoichiometric ratio. The more ethanol the lower the stoich ratio.
If you're after an interesting read, do a search through labrat's posts.. there is a good one he wrote a while back about the impact of adding ethanol to fuel (something that's become politically popular in my part of the world fairly recently).
Edit: I'm feeling generous... I did the search for you
https://www.rx8club.com/showthread.p...hlight=ethanol
If you're after an interesting read, do a search through labrat's posts.. there is a good one he wrote a while back about the impact of adding ethanol to fuel (something that's become politically popular in my part of the world fairly recently).
Edit: I'm feeling generous... I did the search for you
https://www.rx8club.com/showthread.p...hlight=ethanol
07-30-2005, 03:55 AM
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Originally Posted by Lschiavo
Before and after doing some tuning. Suggestions welcome... :D
F
07-30-2005, 01:46 PM
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Originally Posted by dannobre
Funny thing about that...some fuel additives will raise the octane...BUT will also lower the energy content of the fuel....the most common is ethanol. It seems that the powers that be want us to use this fuel more and more....it's crap!
08-03-2005, 01:13 PM
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I read pretty much the whole thread minus some of the seemingly off topic stuff. Very educational stuff, but it appears the following is true (stoich x lambda = AFR).
If the above is true then it doesn't matter if you tune for AFR or Lambda. You will never know your true stoich value because it will changes between fillups. So you must generalize the stoich value, hince a mathmatical constant 14.6?
So no now for the proof assuming Stoich = 14.6:
1) 14.6 x Lambda = AFR
2) 14.6 x Lambda = 14.6 x Lambda
3) (14.6 x Lambda)/14.6 = (14.6 x Lambda)/14.6
4) Lambda = Lambda
So basically what I'm getting from this is Stoich value will screw you whether you tune for AFR or Lambda because your always treating a variable value as a constant.
Again, 1/2 the stuff in the thread is over my head and I'm just trying to learn as much as possible, so it's very likely that I am wrong,.
If the above is true then it doesn't matter if you tune for AFR or Lambda. You will never know your true stoich value because it will changes between fillups. So you must generalize the stoich value, hince a mathmatical constant 14.6?
So no now for the proof assuming Stoich = 14.6:
1) 14.6 x Lambda = AFR
2) 14.6 x Lambda = 14.6 x Lambda
3) (14.6 x Lambda)/14.6 = (14.6 x Lambda)/14.6
4) Lambda = Lambda
So basically what I'm getting from this is Stoich value will screw you whether you tune for AFR or Lambda because your always treating a variable value as a constant.
Again, 1/2 the stuff in the thread is over my head and I'm just trying to learn as much as possible, so it's very likely that I am wrong,.
08-03-2005, 02:45 PM
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Originally Posted by QBallz
I read pretty much the whole thread minus some of the seemingly off topic stuff. Very educational stuff, but it appears the following is true (stoich x lambda = AFR).
If the above is true then it doesn't matter if you tune for AFR or Lambda. You will never know your true stoich value because it will changes between fillups. So you must generalize the stoich value, hince a mathmatical constant 14.6?
So no now for the proof assuming Stoich = 14.6:
1) 14.6 x Lambda = AFR
2) 14.6 x Lambda = 14.6 x Lambda
3) (14.6 x Lambda)/14.6 = (14.6 x Lambda)/14.6
4) Lambda = Lambda
So basically what I'm getting from this is Stoich value will screw you whether you tune for AFR or Lambda because your always treating a variable value as a constant.
Again, 1/2 the stuff in the thread is over my head and I'm just trying to learn as much as possible, so it's very likely that I am wrong,.
If the above is true then it doesn't matter if you tune for AFR or Lambda. You will never know your true stoich value because it will changes between fillups. So you must generalize the stoich value, hince a mathmatical constant 14.6?
So no now for the proof assuming Stoich = 14.6:
1) 14.6 x Lambda = AFR
2) 14.6 x Lambda = 14.6 x Lambda
3) (14.6 x Lambda)/14.6 = (14.6 x Lambda)/14.6
4) Lambda = Lambda
So basically what I'm getting from this is Stoich value will screw you whether you tune for AFR or Lambda because your always treating a variable value as a constant.
Again, 1/2 the stuff in the thread is over my head and I'm just trying to learn as much as possible, so it's very likely that I am wrong,.
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