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KMS UEGO CAN controller
Part nr: 01-01-01-0010
14
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7. AFR ratio
Lambda is a measure of the Air to Fuel Ratio (AFR) that is independent of the type
of fuel being used. The lambda value of the new UEGO CAN controller can vary be-
tween minimum 0,65 and maximum 1,5 lambda. This means the Air to Fuel ratio
for petrol lies between 9,5 and 22,1. The following table shows the AFR ratio’s for
different fuels compared to the lambda value:
Lambda
Air to fuel ratio
Petrol
Diesel
LPG
E85
Methanol
0.65
9.6
9.5
10.1
6.3
4.2
0.70
10.3
10.2
10.9
6.8
4.5
0.75
11.0
10.9
11.6
7.3
4.8
0.80
11.8
11.6
12.4
7.8
5.1
0.85
12.5
12.3
13.2
8.3
5.4
0.90
13.2
13.1
14.0
8.8
5.8
0.95
14.0
13.8
14.7
9.3
6.1
1.00
14.7
14.5
15.5
9.8
6.4
1.05
15.4
15.2
16.3
10.3
6.7
1.10
16.2
16.0
17.1
10.8
7.0
1.15
16.9
16.7
17.8
11.2
7.4
1.20
17.6
17.4
18.6
11.7
7.7
1.25
18.4
18.1
19.4
12.2
8.0
1.30
19.1
18.9
20.2
12.7
8.3
1.35
19.8
19.6
20.9
13.2
8.6
1.40
20.6
20.3
21.7
13.7
9.0
1.45
21.3
21.0
22.5
14.2
9.3
1.50
22.1
21.8
23.3
14.7
9.6
1.55
22.8
22.5
24.0
15.1
9.9
1.60
23.5
23.2
24.8
15.6
10.2
Summary of Contents for UEGO CAN
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