running lean on purpose

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Old 24 Nov 2009, 11:53 am   #1 (permalink)
Michael
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Default running lean on purpose

Theoretical discussion, may void your warranty, yada yada yada...

If you wanted to convince the ECM to run the engine say 5-10% lean on
fuel, how would you go about doing it?

Thanks,

Michael
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Old 24 Nov 2009, 02:27 pm   #2 (permalink)
hls
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Default Re: running lean on purpose


"Michael" <mrdarrett@gmail.com> wrote in message
news:9126273b-d113-4079-8dcd-5a2eec1b7dcd@u8g2000prd.googlegroups.com...
> Theoretical discussion, may void your warranty, yada yada yada...
>
> If you wanted to convince the ECM to run the engine say 5-10% lean on
> fuel, how would you go about doing it?
>
> Thanks,
>
> Michael


Dial in some bias from the oxygen sensors showing that the engine is running
too rich would be the first thing I would try.

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Old 24 Nov 2009, 02:31 pm   #3 (permalink)
Michael
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Default Re: running lean on purpose

On Nov 24, 12:27*pm, "hls" <h...@nospam.nix> wrote:
> "Michael" <mrdarr...@gmail.com> wrote in message
>
> news:9126273b-d113-4079-8dcd-5a2eec1b7dcd@u8g2000prd.googlegroups.com...
>
> > Theoretical discussion, may void your warranty, yada yada yada...

>
> > If you wanted to convince the ECM to run the engine say 5-10% lean on
> > fuel, how would you go about doing it?

>
> > Thanks,

>
> > Michael

>
> Dial in some bias from the oxygen sensors showing that the engine is running
> too rich would be the first thing I would try.



Thanks!

Michael
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Old 25 Nov 2009, 12:14 am   #4 (permalink)
Fatter Than Ever Moe
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Default Re: running lean on purpose

Michael wrote:
> On Nov 24, 12:27 pm, "hls" <h...@nospam.nix> wrote:
>> "Michael" <mrdarr...@gmail.com> wrote in message
>>
>> news:9126273b-d113-4079-8dcd-5a2eec1b7dcd@u8g2000prd.googlegroups.com...
>>
>>> Theoretical discussion, may void your warranty, yada yada yada...
>>> If you wanted to convince the ECM to run the engine say 5-10% lean on
>>> fuel, how would you go about doing it?
>>> Thanks,
>>> Michael

>> Dial in some bias from the oxygen sensors showing that the engine is running
>> too rich would be the first thing I would try.

>
>
> Thanks!
>
> Michael


Someone wrote a book on the subject, I don't think it was a best
seller.
"Lean Combustion" by Derek Dunn-Rankin
http://books.google.com/books?id=qVg...age&q=&f=false
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