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11-16-2013, 04:38 PM
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Join Date: Oct 2006
Location: Garden City, Tx
Posts: 5,122
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Oxygen sensors
You guys that are running O2 sensors for AFR monitoring - what model are you using? I would like to install one while I'm doing my FWF work now, rather than later.
I will see occasional 100LL use and I understand the sensors have a limited lifetime with lead exposure, but the majority of this engines life will be burning 91 mogas.
__________________
Greg Niehues - SEL, IFR, Repairman Cert.
Garden City, TX VAF 2020 dues paid 
N16GN flying 700 hrs and counting; IO360, SDS, WWRV200, Dynon HDX, 430W
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now. 
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11-17-2013, 01:17 AM
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Join Date: Oct 2009
Location: Sydney, Aust.
Posts: 820
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Mark Langford or KR2 fame did a decent writeup on installing one on his Corvair. His O2 sensor (that I plan to use eventually as well) is Bosch part number 11027.
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Once you have tasted flight you will forever walk the earth with your eyes turned skywards, for there you have been and there you will long to return - Leonardo DaVinci
My Flickr gallery: http://www.flickr.com/photos/35521362@N06/
RV-9A - Finished on 10th February 2016 after 4 years, 9 months and 19 days! The 1020th RV-9 flying.
First flight 26th March 2016. Essential specs 145KTAS @ 2400RPM, 8000', 24.2LPH, Initial RoC 1800FPM.
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11-17-2013, 06:17 AM
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Join Date: May 2012
Location: Houston tx
Posts: 124
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1-wire O2 sensors are only accurate right around 14.7:1 AFR, outside of that they are useless. They produce 500mV at 14.7:1, but go to zero or 1V within a couple tenths and it is not linear. You may know you are richer or leaner than 14.7, but that's about it.
The wideband kits, such as the Innovate LC-2 show true AFR from 10:1 to 20:1 and they are accurate across the entire range. . I have one on my turbo Eagle Talon. It also has the 2" gauge as well. The replacement sensor is around 40$.
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Byron
1977 Mooney 201
Houston, TX
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11-17-2013, 10:23 AM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,515
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Quote:
Originally Posted by jetdriven
1-wire O2 sensors are only accurate right around 14.7:1 AFR, outside of that they are useless. They produce 500mV at 14.7:1, but go to zero or 1V within a couple tenths and it is not linear. You may know you are richer or leaner than 14.7, but that's about it.
The wideband kits, such as the Innovate LC-2 show true AFR from 10:1 to 20:1 and they are accurate across the entire range. . I have one on my turbo Eagle Talon. It also has the 2" gauge as well. The replacement sensor is around 40$.
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The Innovate site shows the bosch (LSU4.2) wide A/F sensor is $79. Do you have another source for that one? That is still a good price as an ND brand wide A/F sensor for my Toyota is $165 as a "will fit" part from Advance Auto.
__________________
Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
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11-17-2013, 10:37 AM
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Join Date: Oct 2010
Location: La Feria Texas
Posts: 3,822
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I acquired a couple Bosh 02 sensors for free, the number on the side is: 05149263AA ABASZ 0258 017 212 LSU 4.9 203125 06 982 /6.
Problem is, there are 6 wires coming out of it, not sure which ones to use. Anybody got a clue?
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11-17-2013, 06:06 PM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,515
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Quote:
Originally Posted by DonFromTX
I acquired a couple Bosh 02 sensors for free, the number on the side is: 05149263AA ABASZ 0258 017 212 LSU 4.9 203125 06 982 /6.
Problem is, there are 6 wires coming out of it, not sure which ones to use. Anybody got a clue?
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Does this help?
http://www.boschautoparts.com/BAP_Te...allGDWEB09.pdf
Maybe this is better:
http://www.megamanual.com/PWC/wire.htm
__________________
Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
Last edited by BillL : 11-17-2013 at 06:41 PM.
Reason: additional link
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11-18-2013, 09:49 AM
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Join Date: May 2012
Location: Houston tx
Posts: 124
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Quote:
Originally Posted by BillL
The Innovate site shows the bosch (LSU4.2) wide A/F sensor is $79. Do you have another source for that one? That is still a good price as an ND brand wide A/F sensor for my Toyota is $165 as a "will fit" part from Advance Auto.
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Innovate uses a Bosch 17014 sensor. you can get it for 50$ at Amazon and others.
http://www.mye28.com/viewtopic.php?p=897048
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Byron
1977 Mooney 201
Houston, TX
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11-18-2013, 11:29 AM
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Join Date: Oct 2010
Location: La Feria Texas
Posts: 3,822
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That was a big help Bill, thanks a lot for the information.
Quote:
Originally Posted by BillL
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11-18-2013, 02:26 PM
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Join Date: Oct 2006
Location: Garden City, Tx
Posts: 5,122
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Quote:
Originally Posted by BillL
The Innovate site shows the bosch (LSU4.2) wide A/F sensor is $79. Do you have another source for that one? That is still a good price as an ND brand wide A/F sensor for my Toyota is $165 as a "will fit" part from Advance Auto.
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So the wide-band sensors, they just put out a variable voltage that linearly relates to the air-fuel ratio, is that right? What I'm wanting to do is feed this into one of the general-purpose inputs on the Dynon Skyview for a display widget so I can see what the AFR is in realtime.
__________________
Greg Niehues - SEL, IFR, Repairman Cert.
Garden City, TX VAF 2020 dues paid
N16GN flying 700 hrs and counting; IO360, SDS, WWRV200, Dynon HDX, 430W
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now.
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11-18-2013, 05:12 PM
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Join Date: May 2012
Location: Houston tx
Posts: 124
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You still need a controller such as the LC-2 to provide the output, but yes they linearly put out 0-5V natively for AFR. You can also configure the software to put out 0-1V and substitute that for the factory narrowband sensor in cars, or for other uses. You could feed the 05V or 0-1V output to anything that will accept it and calibrate it for voltage to AFR.
__________________
Byron
1977 Mooney 201
Houston, TX
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