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Wideband Oxygen Sensor (Lab Notes)

This page has been moved from Internetscooters lab and now need to be refined for general use

http://www.vespalabs.org/@api/deki/pages/74

WBo 2 2J1

PICT0966.JPG

The Oxygen Sensor is back on the agenda after getting a display http://wbo2.com/la1/default.htm

1st June 2009 update... the info below is a bit all over the place. Here's a summary... the Oxygen Sensor rocks!

Blurb From Website

./inhandm.jpg

Tech Edge 2J1 Features

  • Accuracy within + - 0.1 AFR
  • Differential WB lin
  • Uses new Bosch LSU 4.2
  • WB lin
  • Auto-cal
  • NB sim
  • 2 analogue
  • RPM input
  • PULSE input
  • 10.5 to 19.5
  • Free logging software

Fitting the Sensor

The Bosch LSU 7200 is classed as a broadband sensor (not as good as a wideband but better than a narrowband). Some info from Bosch can be found in Bosch_The_Modern_Oxygen_Sensor.pdf Bosch_lsu_info.pdf

The first problem is the positioning of the sensor so it has the right running temperature. Techedge state " It’s possible to locate a sensor 300 mm (12”) from a single cylinder runner pipe (such as on an air-cooled motorbike) lsuinstal.pdf

I gave Techedge a call and the 300mm is only a rough guess, which is a good rule of thumb for general purpose. It is more importantant chose a safe spot around that location with a preference to the sensor avoiding damage. THe sensor should not exceed it's 700C operating temperature. Note: The sensor would only be fitted for carb tuning and not used all the time, so a cooler spoy requiring battery power to keep it heated is not an issue.

Lab Notes

First attempt this

Second attempt

Third attempt

Forth attempt

tewblog_2j1setting.JPG

What the data looks like

Using WBConf I set the data to ascii using  1.5 ASCII mode   (s0380) command. The resulting information when tracing looks like...

 029B,025C,025C,0000,0307,048A,0C8A,1781,0004,019F,0001,1D39,06E1,00D2,0300,02AC,0000,00BA,03AD

Importing the log file

./excell graph.jpg

Understanding the Data

Decoding the ASCII/Hex version of each frame, without the CRC and frame header information...

From techedge...

"I guess many people don't know that we had a version 1.5 unit and the



http://wbo2.com/2a0/logger.htm#20frame











http://wbo2.com/2a0/logger.htm#softcontrol"

Using Output for other devices

2j1overview.gif

wbo2_2j1.pdf

Wide Band Output

-GREEN
-BLUE

Derek can you take a pic of the Dtec diagram so I can check that blue and green are what you use?

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Paul McIntosh,
Mar 24, 2015, 11:16 PM
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Paul McIntosh,
Mar 24, 2015, 11:16 PM
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Paul McIntosh,
Mar 24, 2015, 11:16 PM
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Paul McIntosh,
Mar 24, 2015, 11:16 PM
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Paul McIntosh,
Mar 24, 2015, 11:16 PM
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Paul McIntosh,
Mar 24, 2015, 11:16 PM
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Paul McIntosh,
Mar 24, 2015, 11:17 PM
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Paul McIntosh,
Mar 24, 2015, 11:17 PM
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Paul McIntosh,
Mar 24, 2015, 11:17 PM
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Paul McIntosh,
Mar 24, 2015, 11:17 PM
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Paul McIntosh,
Mar 24, 2015, 11:17 PM
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Paul McIntosh,
Mar 24, 2015, 11:17 PM
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Paul McIntosh,
Mar 24, 2015, 11:17 PM
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Paul McIntosh,
Mar 24, 2015, 11:17 PM
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Paul McIntosh,
Mar 24, 2015, 11:17 PM
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Paul McIntosh,
Mar 24, 2015, 11:17 PM
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oxygen13-17.pdf
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Paul McIntosh,
Mar 24, 2015, 11:18 PM
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Paul McIntosh,
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testrun.txt
(15k)
Paul McIntosh,
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testrun_2_bursts.txt
(27k)
Paul McIntosh,
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testrun_different_modes.txt
(1k)
Paul McIntosh,
Mar 24, 2015, 11:18 PM
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Paul McIntosh,
Mar 24, 2015, 11:18 PM
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Paul McIntosh,
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Paul McIntosh,
Mar 24, 2015, 11:18 PM
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Paul McIntosh,
Mar 24, 2015, 11:18 PM
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