More DIY EGOR

[944 Technologist]

Is adding a Temp Sensor out of the Question? Does it violate the design criteria for some reason. Cost? Mechanical, only one hole aloud in the exhaust pipe? I only subscribed again a few months ago.

If not, you could use it and a ROM lookup table to display accurate Lambda values. Using measured Lambda and Temperature as your X & Y values. The table would have the corrected Lambda values.

FR Wilk
__________________________________

>From: RDwoo10 at aol.com
>Date: Sat, 18 Nov 2000 01:15:42 EST
>Subject: Re: More DIY EGOR
>To: diy_efi at diy-efi.org
>Reply-To: diy_efi at diy-efi.org
>
>From what I am understanding, yes & no.  there is not a sensor that measures 
>the exhaust temp & sends that "temp" somewhere.  But, the resistance of the 
>heater does change when the temp goes up & down.  This means that by 
>"measuring" the current through the heater one can tell if the sensor is 
>hotter (or colder) than it was a minute ago (not literal minute).
>
>This leads to the question, is it good enough for accurate measurements from 
>the sensor in regards to O2 conc.?  I think that Bruce probably summed it up 
>earlier (to paraphrase, if I may), it is good enough for tuning, but probably 
>not for lab grade accuracy."
>
>BW
>
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