120 lines
3.2 KiB
Markdown
120 lines
3.2 KiB
Markdown
# WBO Overview
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[Do-i-need-wideband-oxygen-sensor](https://github.com/rusefi/rusefi/wiki/do-i-need-wideband-oxygen-sensor)
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## External WBO
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* External controller with analog output, like then AEM 30-4110 and similar products.
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* External controller with CAN interface, like the AEM X-Series wideband controller/gauge.
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## rusEFI Wide band oxygen
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rusEFI has two probably working implementations for Bosch wideband oxygen control:
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* We have cj125 integration
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* We like [https://github.com/mck1117/wideband](https://github.com/mck1117/wideband) even more. See [the forum thread](https://rusefi.com/forum/viewtopic.php?f=4&t=1856)
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## rusEFI wideband module
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See [rusEFI-Wideband-Controller](rusEFI-Wideband-Controller)
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See [Hellen-WBO](Hellen-WBO)
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TODO: document it better
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## cj125 troubleshooting
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We have a few rusEFI console commands relevant for cj125
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``cj125_info``
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``cj125_restart``
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``cj125_calibrate``
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AndreiKA says Prometheus works
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Matthew says 0.3 SOIC-24 boards works
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Wideband controller based on Bosch CJ125 chip
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green is vUr, temperature feedback
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red is duty cycle
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yellow is vUa, the lambda current measurement
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white is converted AFR
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fully operating in <30 seconds
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in to closed loop in ~18 seconds
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P=30
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I=5
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D=0.3
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though you could probably use D=0 since the system is already damped so hard
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50Hz
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[Older SOIC-24 board - double sided assembly](https://github.com/rusefi/hw_modular/tree/master/cj125_Module)
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[Newer LQFP-32 board - single side assembly](https://github.com/rusefi/rusefi/tree/master/hardware/CJ125_board)
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## Naming Convention
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IP=Pump Current
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VS/IP=VM=common virtual ground for VS and IP
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R Trim=Calibration resistor
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H+ Constant +12v
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H- Heater control, low-side
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UN = Vs = sensor voltage output
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4.9 pinout courtesy of [https://www.wbo2.com/cable/lsuconns.htm](https://www.wbo2.com/cable/lsuconns.htm)
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With SOIC-24 rusEFI module W1=W10=0R means LSU 4.2
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With SOIC-24 rusEFI module W1=W10=Do not populate means LSU 4.9
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**Q: Any troubleshooting hints when things do not work?**
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A: VM wire between CJ125 and sensor is virtual ground, should measure 2.5v when sensor is connected and when sensor is disconnected.
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## Part Numbers
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### Connector Shells
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| Connector | Part Number |
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| :--------------: | :---------: |
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| Female (harness) | 1928404669 |
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| Male (sensor) | 1928405111 |
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Male connector is only needed when building extension harnesses. The connector on the sensor contains a laser-trimmed calibration resistor and should not be removed.
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### Female Terminals for Harness Side
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| Wire Size | Plating | Strip | Loose |
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| :-------: | :-----: | :---------: | :---------: |
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| 24-22 AWG | Tin | 1564324-1 | 1564325-1 |
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| 24-22 AWG | Gold | 1564324-2 | 1564325-2 |
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| 20-18 AWG | Tin | 1241380-1 | 1241381-1 |
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| 20-18 AWG | Gold | 1241380-2 | 1241381-2 |
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| 16 AWG | Tin | 1418884-1 | 1418885-1 |
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| 16 AWG | Gold | unavailable | unavailable |
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Part numbers provided by and available for purchase at corsa-technic.com individually or as a kit. <https://www.corsa-technic.com/item.php?item_id=1296>
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