Aemnet network – AEM 30-2340-N 4-Channel Wideband UEGO AFR Controller - For use with Nascar McLaren ECU User Manual
Page 7
Page 7
A table showing the analog output voltage and corresponding Air/Fuel ratios for some of
the common fuels is shown below in Table 2.
VOLTS LAMBDA AFR
GAS
AFR
METHANOL
AFR E85
AFR
ETHANOL
0.50 0.58
8.5
3.7
5.6
5.2
0.71 0.61
9.0
3.9
5.9
5.5
0.92 0.65
9.5
4.1
6.3
5.8
1.13 0.68 10.0
4.4
6.6
6.1
1.34 0.71 10.5
4.6
6.9
6.4
1.55 0.75 11.0
4.8
7.3
6.7
1.76 0.78 11.5
5.0
7.6
7.0
1.97 0.82 12.0
5.2
7.9
7.3
2.18 0.85 12.5
5.4
8.2
7.7
2.39 0.88 13.0
5.7
8.6
8.0
2.61 0.92 13.5
5.9
8.9
8.3
2.82 0.95 14.0
6.1
9.2
8.6
3.03 0.99 14.5
6.3
9.6
8.9
3.11 1.00 14.7
6.4
9.7
9.0
3.24 1.02 15.0
6.5
9.9
9.2
3.45 1.05 15.5
6.7
10.2
9.5
3.66 1.09 16.0
7.0
10.6
9.8
3.87 1.12 16.5
7.2
10.9 10.1
4.08 1.16 17.0
7.4
11.2 10.4
4.29 1.19 17.5
7.6
11.5 10.7
4.50 1.22 18.0
7.8
11.9 11.0
AEMNet NETWORK
The AEMNet is designed to provide easy installation & communication between
compatible AEM devices. The 4 CH UEGO controller outputs Lambda values of all four
channels and other useful information via the network. If using a non-AEM device to
communicate with the 4 CH UEGO controller, refer to the section " Connecting To the
AEMNet Network Using a non-AEM Device” below.
4 CH UEGO controller information:
• Lambda values (all 4 channels)
• Error messages (all 4 channels)
o
UEGO sensor Error
o
System low power Error
o
EBP sensor error
• Cylinder Configuration Mode (1 – 7), refer to Table 3.
• Exhaust Back Pressure sensor value in PSIg
• Exhaust Back Pressure sensor status
TABLE 2. AFR Values