As title. Id like to fit a wideband lambda sensor to a car that precedes closed loop engine management. Having bought the sensor and fitted it into the downpipe, what can I use to interpret the output? Id like something a little more informative than a simple AFR gauge...

 

a wideband afr gauge? a data monitor of some sort?

surly you should have thought this through before buying a wideband sensor?

 

An output voltage of 0.2V represents a lean mixture. That is one where the amount of oxygen entering the cylinder is sufficient to fully oxidize the carbon monoxide, produced in burning the air and fuel, into carbon dioxide. A reading of 0.8V represents a rich mixture, one which is high in unburned fuel and low in remaining oxygen. The ideal point is 0.45V; this is where the quantities of air and fuel are in the optimum ratio.

 

I am thinking it through before buying the sensor, the way that I have written it is slightly misleading. Id like something a little more technologically impressive than an AFR guage, if feasible.

Simon

 

This is what you are looking for then Simon:

http://cgi.ebay.co.uk/Innovate-DB-Blue-LED-Wideband-Gauge-Kit-LC-1-52mm-NEW_W0QQitemZ310110250641QQcmdZViewItemQQptZUK_Car sParts_Vehicles_CarParts_SM?hash=item310110250641& _trksid=p3286.c0.m14&_trkparms=66%3A3|65%3A1|39%3A 1|240%3A1318

or

http://cgi.ebay.co.uk/Wide-Band-Lambda-system-display-wideband-o2-sensor_W0QQitemZ320334007090QQcmdZViewItemQQptZUK_ CarsParts_Vehicles_CarParts_SM?hash=item3203340070 90&_trksid=p3286.c0.m14&_trkparms=66%3A3|65%3A1|39 %3A1|240%3A1318

Banny

 

Thank you. Would it be practical to read the output voltages using a multimeter?

 

Id be particularly interested in a solution that took the voltage reading from the wideband lambda via RS232 and displayed the voltage and interpretation on a PC screen in real-time.

 

You would need an Innovate LC1 to be able to monitor it on a laptop via serial cable.
LC-1 Lambda Cable with 02 Sensor : Wideband Controller Cable for Dyno, ECU, Data Acquisition, or Gauge Applications
I am doing a group buy on a Prosport gauge with Bosch sensor (in group buy section excellent price ) and was hoping to buy a LC1 on its own but I can’t find one they are always in a kit

 

For an all in one kit then its the LC1, but if you just need a datalogger/ link to PC then I'd recommend this:
myPCLab - Low Cost USB DAQ with Universal Analogue Input

I use this for a 0-4v input for loggging charge temps, but it can take inputs up to 10v.
Pretty rapid smaple rate of up to 128 per sec and can take two other inputs at the same time.
Nice graphical output as well.

They cost £59 but sometimes appear on Ebay for £50.

nick

 

Thank you.

 

if you buy the innovate version that comes without a gauge, you can use a laptop with the supplied software to read the figures.

LogWorks: Data Logging software designed for Innovate Motorsports products

this software came with my innovate wideband

the LC-1, which is now hardwired into the car, i also have my apexi ecu reading from 0-3volts on a simulated "midband" setup for easy checking via the hand commander