Rotax 912 Series Maintenance Manual page 337

Fig. 76-2
hPa
1500
1400
1300
1200
1100
1000
900
Fig. 76-3
engine performance
idle
continuous output
take-off performance
hPa
1400
Fig. 76-4
1300
1200
1100
1000
900
Effectivity 914 Series
Edition 1 / Rev. 0
BRP-Rotax
Maintenance Manual
The following diagram shows the pressure regulating sequence for the
newer TCU versions (TCU No. 966741 or higher) (Fig. 76-2).
0 10 20 30
The airbox target pressures for engine operation with newer TCU
versions:
throttle potentiometer
100 - 108 %
110 - 115 %
The following diagram (Fig. 76-4) illustrates the relationship between
the throttle valve position and the nominal airbox pressure for older
TCU versions (TCU part no. 966470 - 966473).
0 10 20 30
40 50 60 7 0
Airbox-nominal pressure
~ 0 % 1500 hPa (44,3 in. HG)
1220 hPa (36,0 in. HG)
1370 hPa (40,5 in.HG)
40 50 60 7 0
00170
80 90 100 110 115 %
00952
04813
80 90 100 110 115 %
76-00-00
May 01/2007
46 in. HG
44
42
40
38
36
34
32
30
28
40 in. HG
38
36
34
32
30
28
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