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afr & lambda

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Old 11-12-2010, 05:19 PM
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gus
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Default afr & lambda
what should these be at idle?
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Old 11-12-2010, 05:27 PM
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GARETH T
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they should be the leanest you can get away with while still producing enough torque to allow for a smooth idle!
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Old 11-12-2010, 05:28 PM
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depends on your car, year, engine etc.

If it's your S1 then anything from lambda 13.2 upwards is ok, or higher than 0.9.

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Old 11-12-2010, 05:36 PM
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gus do you know lambda and afr are one and the same thing,. just different ways of measuring just that the way your question is worded like you want both.

lambda 1 = 14.7 afr
lambda 0.86 = (0.86 X 14.7) 12.6 afr
lambda 1.2 = (1.2 X 14.7) 17.64 afr
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Old 11-12-2010, 05:40 PM
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Originally Posted by GARETH T
gus do you know lambda and afr are one and the same thing,. just different ways of measuring just that the way your question is worded like you want both.

lambda 1 = 14.7 afr
lambda 0.86 = (0.86 X 14.7) 12.6 afr
lambda 1.2 = (1.2 X 14.7) 17.64 afr

no one likes a smart arse let alone a welsh smart arse
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Old 11-12-2010, 05:41 PM
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only trying to help you english cunt lol lol
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Old 11-12-2010, 05:44 PM
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Originally Posted by GARETH T
only trying to help you english cunt lol lol

long time no hear or see lunk no GT5 either whats the crack?
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Old 11-12-2010, 05:45 PM
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i dont love you no more lol lol i found a better bear
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Old 11-12-2010, 05:47 PM
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Old 11-12-2010, 05:52 PM
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i run my cossy on around 12.9 on tick over seems to like to run a lot sweeter slightly rich
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Old 11-12-2010, 05:53 PM
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jay - why does my zeitronix read both
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Old 11-12-2010, 06:01 PM
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it reads both because some people prefer to work in lambda, others in AFR. It' just like a boost gauge can be in PSI or bar for example. Lambda 1 is a stoichiometric ratio. It means that all petrol and all air is consumed in the combustion process with no excess of either.

Rich mixture means excess fuel, and lean excess air. Rich is anything less than lambda 1, lean anything over.

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Old 11-12-2010, 06:07 PM
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well i know what they are

was just wondering what it should be at idle
strange that they are both displayed at the same time then

did wonder why
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Old 11-12-2010, 06:07 PM
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Originally Posted by Rick
it reads both because some people prefer to work in lambda, others in AFR. It' just like a boost gauge can be in PSI or bar for example. Lambda 1 is a stoichiometric ratio. It means that all petrol and all air is consumed in the combustion process with no excess of either.

Rich mixture means excess fuel, and lean excess air. Rich is anything less than lambda 1, lean anything over.

Rick
shit i did that without moving my lips

like rick say's dude but i work in afr's
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Old 11-12-2010, 08:18 PM
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Originally Posted by Rick
it reads both because some people prefer to work in lambda, others in AFR. It' just like a boost gauge can be in PSI or bar for example. Lambda 1 is a stoichiometric ratio. It means that all petrol and all air is consumed in the combustion process with no excess of either.

Rich mixture means excess fuel, and lean excess air. Rich is anything less than lambda 1, lean anything over.

Rick
Never is 100% of the fuel consumed, simply not that efficient.
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Old 11-12-2010, 08:20 PM
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Mine ran around 14.2 AFR at idle, co was 0.97%, 137PPM.
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Old 12-12-2010, 12:07 AM
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Originally Posted by GARETH T
only trying to help you english cunt lol lol

LOL !!!


Originally Posted by GARETH T
i dont love you no more lol lol i found a better bear
Double LOL !!
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Old 12-12-2010, 08:28 AM
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simon the worry thing was he phoned me as soon as he read that,,, i think he was worried about the other bear LOL think he wants to beat him up LOL
Last edited by GARETH T; 12-12-2010 at 08:33 AM.
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