[Diy_efi] Could someone please explain Wide Band/Narrow
Jim Butterfield
jimbutterfield at yahoo.com
Fri Dec 24 20:24:01 GMT 2004
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I got my honda civic O2 at the local "discount import autoparts" for just over $60... it was a bosch unit
David Cooley <n5xmt at bellsouth.net> wrote:The DIY-WB project provides a buffered output and doesn't require a display built in...
any thing you buy pre-built will be several GRAND... you can build the DIY-WB yourself for about 200 including the WB-O2... Autozone has the NTK sensor for 169 in the bosh brand (an NTK sensor in the Bosch box) it's for the 95 Honda Civic 1.5 Federal emissions.
-------Original Message-------
From: Charles McDowell
Date: 12/24/04 13:11:54
To: 'A list for Do-It-Yourself EFI'
Subject: RE: [Diy_efi] Could someone please explain Wide Band/Narrow BandO2Sensors
A little off from the original question, but is there a ready source for a "plug and play" WB-O2 that gives the 0-5V output as described below? I've seen lots of discussion about DIY-WB and such, but I'd rather pay the extra cash and get going more quickly with my project. I'm looking for voltage level output, not a display or anything like that.
Thanks.
-----Original Message-----
From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org] On Behalf Of David Cooley
Sent: Friday, December 24, 2004 11:59 AM
To: A list for Do-It-Yourself EFI; gmecm at diyefi.org
Subject: Re: [Diy_efi] Could someone please explain Wide Band/Narrow Band O2Sensors
a narrow band O2 is what is in 99.9% of the cars on the road... it is a non-linear sensor with an output of 0-1 volt... 0v being lean, 1v being rich... at stoich, it produces approx 0.450V output, but going rich makes the output swing rapidly up and going lean makes it swing rapidly down .
a wideband O2 (At least the NGK/NTK I am familiar with) is actually a narrow band sense element and an Oxygen Ion pump in a single package... it takes a special controller to run... the controller looks at the O2 sensing element output, and if it varies from stoich (0.450V) the controller drives the Oxygen ion pump... if it's rich, it pumps Oxygen ions into the sample chamber until Stoich is reached, then the controller knows exactly what the mix was due to how much Oxygen it needed to add... conversly, if it's lean (less than 0.450V) on the sensor, then the Oxygen Ion pump is commanded to remove Oxygen from the sample until 0.450V is again reached... the output of the controller is a linear 0-5V signal and is 2.50V at stoich.
-------Original Message-------
From: Joe Lopilato
Date: 12/24/04 12:27:57
To: diy_efi at diy-efi.org
Subject: [Diy_efi] Could someone please explain Wide Band/Narrow Band O2 Sensors
Hi all:
Could someone please explain Wide Band/Narrow Band O2 Sensors. I am trying
to understand the differences but it's just not sinking in. If there is a
site that explains it clearly, I would appreciate the URL.
Thanks and Best-of-the-holidays to all.
Joe
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<DIV>I got my honda civic O2 at the local "discount import autoparts" for just over $60... it was a bosch unit<BR><BR><B><I>David Cooley <n5xmt at bellsouth.net></I></B> wrote:
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<DIV>The DIY-WB project provides a buffered output and doesn't require a display built in...</DIV>
<DIV>any thing you buy pre-built will be several GRAND... you can build the DIY-WB yourself for about 200 including the WB-O2... Autozone has the NTK sensor for 169 in the bosh brand (an NTK sensor in the Bosch box) it's for the 95 Honda Civic 1.5 Federal emissions.</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV id=IncrediOriginalMessage><I>-------Original Message-------</I></DIV>
<DIV> </DIV>
<DIV id=receivestrings>
<DIV dir=ltr style="FONT-SIZE: 11pt"><I><B>From:</B></I> <A href="mailto:charles at taildragger.info">Charles McDowell</A></DIV>
<DIV dir=ltr style="FONT-SIZE: 11pt"><I><B>Date:</B></I> 12/24/04 13:11:54</DIV>
<DIV dir=ltr style="FONT-SIZE: 11pt"><I><B>To:</B></I> <A href="mailto:diy_efi at diy-efi.org">'A list for Do-It-Yourself EFI'</A></DIV>
<DIV dir=ltr style="FONT-SIZE: 11pt"><I><B>Subject:</B></I> RE: [Diy_efi] Could someone please explain Wide Band/Narrow BandO2Sensors</DIV></DIV>
<DIV> </DIV>
<DIV><SPAN class=599140918-24122004>A little off from the original question, but is there a ready source for a "plug and play" WB-O2 that gives the 0-5V output as described below? I've seen lots of discussion about DIY-WB and such, but I'd rather pay the extra cash and get going more quickly with my project. I'm looking for voltage level output, not a display or anything like that.</SPAN></DIV>
<DIV><SPAN class=599140918-24122004></SPAN> </DIV>
<DIV><SPAN class=599140918-24122004>Thanks.</SPAN></DIV>
<DIV style="MARGIN-RIGHT: 0px">
<DIV></DIV>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left><FONT face=Tahoma size=2>-----Original Message-----<BR><B>From:</B> diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org] <B>On Behalf Of </B>David Cooley<BR><B>Sent:</B> Friday, December 24, 2004 11:59 AM<BR><B>To:</B> A list for Do-It-Yourself EFI; gmecm at diyefi.org<BR><B>Subject:</B> Re: [Diy_efi] Could someone please explain Wide Band/Narrow Band O2Sensors<BR><BR></FONT></DIV>
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<DIV>a narrow band O2 is what is in 99.9% of the cars on the road... it is a non-linear sensor with an output of 0-1 volt... 0v being lean, 1v being rich... at stoich, it produces approx 0.450V output, but going rich makes the output swing rapidly up and going lean makes it swing rapidly down .</DIV>
<DIV> </DIV>
<DIV>a wideband O2 (At least the NGK/NTK I am familiar with) is actually a narrow band sense element and an Oxygen Ion pump in a single package... it takes a special controller to run... the controller looks at the O2 sensing element output, and if it varies from stoich (0.450V) the controller drives the Oxygen ion pump... if it's rich, it pumps Oxygen ions into the sample chamber until Stoich is reached, then the controller knows exactly what the mix was due to how much Oxygen it needed to add... conversly, if it's lean (less than 0.450V) on the sensor, then the Oxygen Ion pump is commanded to remove Oxygen from the sample until 0.450V is again reached... the output of the controller is a linear 0-5V signal and is 2.50V at stoich.</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV id=IncrediOriginalMessage><I>-------Original Message-------</I></DIV>
<DIV> </DIV>
<DIV id=receivestrings>
<DIV dir=ltr style="FONT-SIZE: 11pt"><I><B>From:</B></I> <A href="mailto:josephl at aei.ca">Joe Lopilato</A></DIV>
<DIV dir=ltr style="FONT-SIZE: 11pt"><I><B>Date:</B></I> 12/24/04 12:27:57</DIV>
<DIV dir=ltr style="FONT-SIZE: 11pt"><I><B>To:</B></I> <A href="mailto:diy_efi at diy-efi.org">diy_efi at diy-efi.org</A></DIV>
<DIV dir=ltr style="FONT-SIZE: 11pt"><I><B>Subject:</B></I> [Diy_efi] Could someone please explain Wide Band/Narrow Band O2 Sensors</DIV></DIV>
<DIV> </DIV>
<DIV>Hi all:</DIV>
<DIV> </DIV>
<DIV>Could someone please explain Wide Band/Narrow Band O2 Sensors. I am trying</DIV>
<DIV>to understand the differences but it's just not sinking in. If there is a</DIV>
<DIV>site that explains it clearly, I would appreciate the URL.</DIV>
<DIV> </DIV>
<DIV>Thanks and Best-of-the-holidays to all.</DIV>
<DIV> </DIV>
<DIV>Joe</DIV>
<DIV> </DIV>
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