calculation afr....let's talk

[voglioimparare]

let's take an example
I read in the map limiter, the maximum torque value = 370 nm at 2000 rpm/min
I go on the map pair - diesel and 2000 rpm and 370 nm I find about 74 mm3 (interpolating between 350-68,7 and 400-83,9)
turn 74 mm3 x 0.9 = 66,6 mg
I go on the map fuel - to-air and for 2000 rpm and 74 mm3 find air 1000 mg
divide 1000 / 66,6 I find afr= 15,01

I was trying to do the calculation by following your method... the map torque diesel I found it (nm to iq), but I do not understand what is the map fuel-air... thanks

[fabiovts88]

great explanation sergiot

[Quattro]

map prex????? what?????
there is a map of afr but ? only a limiter, what was once the map of the smoke.

I spoke to you of the map prex turbo...this? c'? a limiter on this map which is called the (air as a function of the diesel) and ? the one that equilibria of this relationship.
With regard to the AFR I wanted to ask if you could be more? accurate on the maps to which you refer, perhaps putting a file of the study.
Thanks

[voglioimparare]

I spoke to you of the map prex turbo...this? c'? a limiter on this map which is called the (air as a function of the diesel) and ? the one that equilibria of this relationship.
With regard to the AFR I wanted to ask if you could be more? accurate on the maps to which you refer, perhaps putting a file of the study.
Thanks

I have posted a sample file on purpose, I see that you are interested in most people the thing from the guys we do a good thread with a good explanation

[jovandj]

Map and lambda, which limits the maximum afr set. ....the diesel engine for if you're skinny or excess air, and not ingrassabile....let me explain the map lambda limits the maximum fuel allowed for that amount? air....as the maf reads air 800mg jot down the gas if you set lambda 1 sara 800:14.5:55mg of diesel maximum permissions that are 60 and something mm3....but this is when you throw down the gas...jel working "split" the engine aspirera however, 700 of the air injecting 20mm3 of diesel fuel, depending on the request of the pedal, inevitably, in the lambda sara lean and very

[voglioimparare]

Map and lambda, which limits the maximum afr set. ....the diesel engine for if you're skinny or excess air, and not ingrassabile....let me explain the map lambda limits the maximum fuel allowed for that amount? air....as the maf reads air 800mg jot down the gas if you set lambda 1 sara 800:14.5:55mg of diesel maximum permissions that are 60 and something mm3....but this is when you throw down the gas...jel working "split" the engine aspirera however, 700 of the air injecting 20mm3 of diesel fuel, depending on the request of the pedal, inevitably, in the lambda sara lean and very

thanks also to you for your explanation!!


someone wants to make an example on the file that I posted as an example?? so we clearly see all how to do it? graziee

[sergiot]

Again the previous calculation on the point of maximum torque at full throttle and the file brera that you have indicated.
I read the point of max torque on the map limiter: 454 nm at 2000 rpm at the address 1CBD5A
I go in the map pair-diesel and I try to 454 nm and 2000 rpm and the diesel required a 75.2 mg to address 1CDD22
I go in the map fuel-to-air and looking for a 75.2 mg and 2000 rpm and the air lens 1100 mg to address 1C3226
The relationship between 1100 and 75,2 = 14,6 air/fuel ratio
not the multiplication of the oil is 0.9 why? the measures are already? all in mass
as you can see I used a simplified system without taking into account the limiter of the lambda.
but if you are working on the limiter lambda c'? need to calculate it, c' ? gi? written.

[ake85]

winols and excel, and are affixed

[sergiot]

winols and excel, and are affixed

can you explain that?
thanks

[ake85]

I want to say that if you want to learn to map, you need to know winols and use excel's all here