Wide Band O2

[Raymond C Drouillard]

Ezra,

Just to let you know what you are up against:
The wide ratio lambda sensor is a different animal.  It actually contains
a standard HEGO sensor that is used in a feedback loop.  You need to
create a circuit that reads the voltage on the HEGO sensor and uses that
info to adjust the current that operates an oxygen ion pump.  The
resultant current is proportional to the lambda, but the curve has a
different slope on either side of stoich.

Just enough details to whet your appetite.  If you need more help, let me
know.

Ray Drouillard, BSEE


On Wed, 6 Jan 1999 06:19:19 -0500 "Ezra Hall" <ehall at together.net>
writes:
>Bruce,
> Thank you for the response. I have already built an LED meter to
monitor
>Lambda sensor operation. My problem is locating a Lambda sensor itself
that
>will cover a wider range of Lambda. The stock sensor covers a very
narrow
>range, at least that is what I have read and observed. I want coverage
to
>Lambda=.86,A/F=12.6:1, MAX POWER. I have heard that newer Hondas use a
wider
>band Lambda sensor so they can run more lean, anyone know? I think these
are
>4-wire Lambda sensors, 2 for the heater, 2 for the sensor
element.Thanks!
> Ezra
>ehall at together.net
>-----Original Message-----
>From: Bruce Plecan <nacelp at bright.net>
>To: ehall at together.net <ehall at together.net>
>Date: Tuesday, January 05, 1999 9:15 PM
>Subject: Wide Band O2
>
>
>>Lots of stuff in the archives for building one, but no one has done
that
>>yet.  Project name was EGOR.  If ya want a hand holler.  I can't offer
>>much maybe just where to look for some stuff.
>>  Best of Luck Bruce

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