does the voltage of a lambda follow linear to afr ?

i have an aem wideband showing afr.
i also have stock lambdas displaying voltage on my laptop.
i just need to work out what voltage corresponds to what afr ?

 

Google image your thread title and you will have found your awnser

 

Stu shows this in one of his technical essays

 

i tried google mate and didnt see it, il try again now .....

 

link me up jimbo i cant find it mate lol

 

http://www.google.co.uk/search?hl=en...mYKYTY8AOE19VP

 

Top left one mate

 

thanks mate

 

That's Lambda to AFR. 14.7:1 = Lambda 1 Lambda/AFR chart

He is looking for Lambda voltage to AFR I think?

 

You'd need to refer to your AEM instructions.

There is no generic answer. Most modern widebands output's are linear...but again, the only way to be sure is to check with the manufacturer. And most will use different voltages to represent different AFR's

One of the reasons why the Innovate stuff is handy. You can program it to output any voltage you like, for any AFR you like instead of being stuck with some shitty fixed scale.

 

Start reading here: http://en.wikipedia.org/wiki/AFR_sensor
That should answer some questions.

 

NOBODY other than AEM can provide the answer he is after. Or someone who has AEM's information.

There is no generic or standardised output from a WB controller.

 

If I understood his original post correctly...

He has an AEM wide-band set up displaying AFR, but he is also wanting to monitor the factory (narrow-band?) Lambda voltages and wishes to know the corresponding AFR from those outputs?

 

Possibly, I guess he is a little vague in that respect.

Factory NB setups will use an almost generic voltage output vs AFR. However....they are only deemed accurate at 14.7:1, so ther really isnt any point trying to compare voltages/AFR's obtained outside of that as they are nowhere near linear.

Some Toyotas do convert a NB signal to a 0-5v output, but it is still a NB, and doubtful it is linear.

But again, there is no generic answer that xyz brand WB outputs 123v for 567 AFR

They are all different.

 

Yep, that's also stated by the wiki document. Have you even bothered to read it?

 

i was thinking ecu was on wideband, but its narrowband anyways lol

 

Why would I bother to read something when I already know ?

 

Then why comment on my post, if you don't even know what the post is about?

 

As per what Stevie says the only place that a nb one is accurate is 14.7 so it's pointless even tryin to translate it anywhere else on the scale.

 

I looked at the title, opened it. It was a generic page about lambda sensors you would find anywhere. In no way relevant to the OP's question.

 

Really? I would suggest reread the original question then.

And whether or not it's relevant, wouldn't that be the OP's decision?
I would throw away the crystal ball you're using to know what's in a post without reading it.

 

Im sure the original poster is clever enough to be able to find a generic wiki page on lambda sensors anyway TBH so its all a bit acedemic.