Oxygen Sensor transfer function?
Oxygen Sensor transfer function?
(OP)
I'm trying to find data sheets or anything at all with a transfer curve relating lambda or air/fuel ratio to voltage output for a standard automotive type switching oxygen sensor. Any manufacturers datasheets on wideband UEGO sensors would be nice too.
I'm working on a circuit to give a useable A?F reading from the standard type of sensor, as the widebands are so expensive.
I'm working on a circuit to give a useable A?F reading from the standard type of sensor, as the widebands are so expensive.





RE: Oxygen Sensor transfer function?
www.diy-wb.org
It's awesome.
MK
RE: Oxygen Sensor transfer function?
RE: Oxygen Sensor transfer function?
Ideas/comments?
RE: Oxygen Sensor transfer function?
RE: Oxygen Sensor transfer function?
RE: Oxygen Sensor transfer function?
RE: Oxygen Sensor transfer function?
http://www.huntleyracing.com/o2sensordatasheet.htm
I'm sure it's just a standard oxygen sensor, as it has the same transfer curve shape as the rest of 'em. If i can't find naything better, it'm going to plug these values in and see what it comes up with. Until now, i've just been watching the voltage with a good multimeter, and i can even see when the computer switches from the part throttle fuel maps to the full throttle maps when the O2 voltage jumps from 0.780 range to 0.900 range. I'm thinking i have to richen up the part throttle fuel maps to match the full throttle maps when it's under boost, or BOOM at higher boost pressures.
RE: Oxygen Sensor transfer function?
A useful link is http://www.techedge.com.au/vehicle/wbo2/default.htm
I purchased a kit form here, and it seems to work well. Although I would like a little more info on the sensors as apparently a wideband sensor is supposed to come with external electronics? I have recently fitted a engine management sysstem to my car which has a fuel map based on lambda/AFR target mixtures, but i need the correct sensor to make it work properly. Just not exactly sure which one as I used a NGK UEGO sensor for the DIYWB, but i bought the sensor only. Not sure where to get the control box I have been told about ( by the suppliers of the management system )
RE: Oxygen Sensor transfer function?
RE: Oxygen Sensor transfer function?
RE: Oxygen Sensor transfer function?
Are Bosh or NGK or NTK equivalents?
RE: Oxygen Sensor transfer function?
Unless you've got the 5 wire sensor (7 wires on the harness) you shouldn't have any trouble finding a low cost replacement. If it is the 5/7 wire sensor, then it's going to cost you.
RE: Oxygen Sensor transfer function?
I have a couple of ntk lambda sensors that I'm trying to find data sheets on, any ideas?