UEGO IDEA was(Re: More UEGO stuff)

[Walter Sherwin]

The "gizmo",  would be used as part of a specific remapping procedure.  All
of the details are outlined in a response to Bruce's similar
question/statement.  You could not use this approach while the computer was
in open loop.  It has to be "forced" into artificial closed loop for tuning
purposes.  I am always interested in automating the recalibration process.
See the other message, and feel free if you have thoughts/comments.

Walt.


-----Original Message-----
From: Stuart Bunning <stuart at kenelec.com.au>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Sunday, January 31, 1999 11:51 PM
Subject: Re: UEGO IDEA was(Re: More UEGO stuff)


>
>Sounds Good But wouldn't this only work for OPEN LOOP mode??
>
>Once you nail it of your car is cold and hasn't enable closed loop mode
even
>if the ECU still generated BLM's at WOT or cruise when cold based on O2
>sencor voltage it doesn't alter fueling to try to stay at 14.7:1 anyway. or
>am i wrong ????
>
>
>
>>What about a control box which would take a UEGO signal, and perform an
>>appropriate transform equation, and then export the resultant signal to an
>>output port which one could connect to the O2 sensor pin of an OEM  MAP
>>computer.    The goal would be to make an artificial setpoint (say 11.5:1
>>A/F ratio) appear to the OEM computer as stoich.  If this were possible,
>>then one could use the OEM computer to generate BLM's and iteratively
(read
>>this as safely) reach the perfect "MAP" while driving, or while on a
chassis
>>dyno.  Imagine, in one afternoon, you could do the work of several days.
>>This would even help the normally aspirated guys.
>>
>
>
>Best Regards,
>
>STUART BUNNING
>SALES ENGINEER
>KENELEC PTY LTD
>
>23-25 REDLAND DRIVE
>MITCHAM VICTORIA 3132
>AUSTRALIA
>
>PHONE:  61 3 9873 1022
>FAX:    61 3 9873 0200
>EMAIL:  stuart at kenelec.com.au
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>