Fw: Wide band O2 ????

[jdbubb at ix.netcom.com (Dan Bubb)]

Not only that, but the wide band sensor requires a special circuitry to
> dive the pump cell which doesn't allow the sensor to clog with carbon
> deposits.

Uh....This isn't the purpose of the controller.

----- Original Message ----- 
From: Adrian <adrian.culda@sympatico.ca>
To: 'Dan Bubb' <jdbubb@ix.netcom.com>; <mr.utility@highstream.net>
Cc: <scirocco-l@scirocco.org>
Sent: Saturday, October 25, 2003 3:57 PM
Subject: RE: Fw: Wide band O2 ????


> The unit I have posted it is possible due to the fact that it has a
> linear converter and it does convert the wide band signal to the narrow
> band signal. http://wbo2.com/2a0/2a0info.htm
> Not only that, but the wide band sensor requires a special circuitry to
> dive the pump cell which doesn't allow the sensor to clog with carbon
> deposits.
> http://www.boschusa.com/AutoOrigEquip/Sensors/ProdExhSensors/#lsu4
> 
> As posted before the LSU4 sensor can be had from the dealer for ~40 VW
> part # 021-906-262-B, (AWW & AFP motors only)
> 
> Adrian C.
> Project Scirocco R2.oT - "The Turbocharged 16Valves of Fire Breathing
> Fury"
> ( 2.0L 16V T66 )
>  
> 
> -----Original Message-----
> From: scirocco-l-bounces@scirocco.org
> [mailto:scirocco-l-bounces@scirocco.org] On Behalf Of Dan Bubb
> Sent: October 25, 2003 3:22 AM
> To: mr.utility@highstream.net
> Cc: scirocco-l@scirocco.org
> Subject: Re: Fw: Wide band O2 ????
> 
> "Did I read earlier in this thread, that I cannot use this on an older
> system, are they compatbile doing it the way that I have written it up
> here?"
> 
> You can use a 3 wire narrow band O2 sensor in a CIS-lambda car by just
> supplying 12V to the heater circuit whenever the fuel pump is running.
> You cannot use the output from a WB-O2 with either CIS-E or CIS-lambda
> since
> it's output is 0-5V range where a NB-O2 has a 0-1V range. Also, the
> output
> is inverted. Lean is low on a NB and high on a WB.
> Some of the WB controllers do have an auxillary output that mimics the
> NB
> range.
> Most aftermarket engine management systems will interface directly with
> a
> WB-O2 controller.
> Did that answer the question?
> Dan
> 
> ----- Original Message -----
> From: <mr.utility@highstream.net>
> To: Adrian <adrian.culda@sympatico.ca>
> Cc: 'Dan Bubb' <jdbubb@ix.netcom.com>; <scirocco-l@scirocco.org>; 'Ron
> Pieper' <rapieper@yahoo.com>
> Sent: Friday, October 24, 2003 4:54 PM
> Subject: RE: Fw: Wide band O2 ????
> 
> 
> > Thank you sir!
> >
> > On the note of how quickly the WBO2 sensors work, I was thinking they
> would be
> > faster, but I just assumed it...  I shall have to look at this very
> closely,
> > perhaps put one on my car, with a hot lead switched with the FI system
> to
> > run...  Did I read earlier in this thread, that I cannot use this on
> an
> older
> > system, are they compatbile doing it the way that I have written it up
> here?
> >
> > TIA
> >
> > David
> >
> > Quoting Adrian <adrian.culda@sympatico.ca>:
> >
> > > Well Wide bands work on a different system than the old narrow band
> > > sensors.
> > > They are far more accurate due to the stable operating temperature.
> Not
> > > only that but the latency of the narrow band O2 sensor is about 0.5
> (~2
> > > samples/sec.)second compared to the wide band which is 0.03 (~25-30
> > > samples/sec.)!!!
> > >
> > > How the O2 Sensor Works
> > >
> > > The oxygen sensor detects oxygen in the exhaust in a way similar to
> a
> > > battery cell. Platinum layers on the inside and outside of the probe
> act
> > > as electrodes. Zirconium dioxide between the layers of platinum acts
> as
> > > an electrolyte. The inside layer of platinum is exposed to the air
> in
> > > the engine bay, the outer layer is exposed to the exhaust. When the
> O2
> > > sensor is hot it generates positive voltage between the two layers
> of
> > > platinum. Negatively charged oxygen ions in the exhaust are
> attracted to
> > > the platinum and reduce the voltage that the Engine Control Unit and
> > > air/fuel gauge reads.
> > >
> > > That's why a rich mixture = higher voltage from the sensor (more gas
> =
> > > fewer negative O2 ions to drop the voltage). Just remember "L=L",
> Lean =
> > > Low voltage. You can attach a Volt Ohm meter (black to ground, red
> to
> > > the O2 sensor) to monitor your engine's air/fuel ratio. I suggest
> you
> > > have a co-pilot read the voltage while you accelerate at full
> throttle.
> > >
> > > The 3 wire sensors are used to give power and ground to pre-heat the
> > > sensor so it starts working quicker and it has no effect after the
> > > sensor gets warmed up.
> > >
> > >
> > >
> > > Adrian C.
> > > Project Scirocco R2.oT - "The Turbocharged 16Valves of Fire
> Breathing
> > > Fury"
> > > ( 2.0L 16V T66 )
> > >
> > >
> > > -----Original Message-----
> > > From: scirocco-l-bounces@scirocco.org
> > > [mailto:scirocco-l-bounces@scirocco.org] On Behalf Of
> > > mr.utility@highstream.net
> > > Sent: October 24, 2003 11:29 AM
> > > To: Dan Bubb
> > > Cc: scirocco-l@scirocco.org; Ron Pieper
> > > Subject: Re: Fw: Wide band O2 ????
> > >
> > > Quoting Dan Bubb <jdbubb@ix.netcom.com>:
> > >
> > >
> > > > 1. control the current to it's heater to maintain the sensor
> > > temperature in a
> > > > narrow band despite exhaust heat input (or lack thereof)
> > >
> > > > Dan
> > > >
> > > >
> > >
> > >
> > > Correct me if I am wrong, but the only time the heater is used is at
> > > initial
> > > start-up, when the sensor is cold?  I was under the impression that
> that
> > > was
> > > the only time the heater is used, to further diminish emissions when
> the
> > > O2 is
> > > cold and not yet able to function completely....
> > >
> > > David
> > >
> > >
> > > _______________________________________________
> > > Scirocco-l mailing list
> > > Scirocco-l@scirocco.org
> > > http://neubayern.net/mailman/listinfo/scirocco-l
> > >
> > >
> >
> >
> >
> 
> 
> 
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