WB Instruments
rr
rrauscher at nni.com
Fri Jul 13 13:28:05 GMT 2001
I placed an Excel data file into incoming. It
includes columns of interest for WB O2 observation.
Open the data0.xls file in Excel and graph it. Use
the line graph w/o markers function. Then stretch
the graph out to the right for better resolution.
Columns:
EngRun: runtime in hh:mm:ss (will be horizontal scale)
Rpm: engine rpm / 10; 167.5 = 1675 rpm
Map: manifold pressure in KPa
O2: ecm narrowband O2 sensor in mV / 10; 51.3 = 513mV
AFR: true AFR as reported by WB O2 sensor
STO: stoich reference line for AFR reading
The 2 minutes of data is entering a limited access highway
and leveling into a steady state cruise. This is from a
TBI equiped medium-po engine.
BobR.
p.s. the data0.xls file is dated 7/13/00, don't know why.
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