WideBand question
08-25-2004, 10:26 PM
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WideBand question I have an NX Maximizer that has the ability to monitor a wideband. My question is does the output of a wideband share the same characteristics as a narrowband because if you look at the diagram for the maximizer on p.17 Connector 2 Maximizer it has a 12v power source, ground, and input 0-5v from a sensor. I would assume that it would just hook up right to the output of the wideband. I'm just not sure how widebands differ in thier output from a narrowband. I just wasnt sure if that 0-5v would be from the sensor or a controller. Is a controller needed in this particular case?
Thanks for your help
Tom
Thanks for your help
Tom
Last edited by TPY2KWS6; 08-25-2004 at 10:32 PM.
08-26-2004, 08:12 AM
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Wideband meters tend to offer 0-1V (for some
narrowband emulation) and / or 0-4V (for data
logging via engine sensor harness or other A/D).
From the ones I've looked at, this varies model
to model. Some have both output levels available,
switchable.
Seen some wideband pages that show the curves
for theirs vs narrowband. Basically the wideband
is linear over a broad range of AFR (like from 10:1
to 20:1 and you can get good, 0.1:1 accuracy
from that and regardless of exhaust temp. The
narrowband sensors are very nonlinear and in the
region you want to work, respond more to gas
temp than mixture (so are worthless until you have
some other form of calibration, for power tuning).
narrowband emulation) and / or 0-4V (for data
logging via engine sensor harness or other A/D).
From the ones I've looked at, this varies model
to model. Some have both output levels available,
switchable.
Seen some wideband pages that show the curves
for theirs vs narrowband. Basically the wideband
is linear over a broad range of AFR (like from 10:1
to 20:1 and you can get good, 0.1:1 accuracy
from that and regardless of exhaust temp. The
narrowband sensors are very nonlinear and in the
region you want to work, respond more to gas
temp than mixture (so are worthless until you have
some other form of calibration, for power tuning).