System Description; System Limitations - Rotax 915 iSc 3 A Installation Manual

For a detailed System description refer to the latest issue of the Operators Manual.

SYSTEM LIMITATIONS

Air intake Following requirements may be used:
Flow rate
Pressure loss (between ambi-
ent pressure and compressor
inlet at 16000 ft)
Icing in the area of the air intake needs to be avoided. The prevention of icing lies within
the aircraft manufacturer's responsibility.
Airbox reference The reference pressure of the fuel system is the airbox pressure.
pressure
Air intake ducting The air intake ducting must not be changed in any case (connection between Intercooler
and overboost valve, between Turbocharger and Intercooler, between Overboost valve
and throttle).
Intake pressure loss (Engine
Speed: 5500 ±50 rpm;
Airflow: 360-366 kg/min)
Intake pressure loss (Engine
Speed: 5800 ±50 rpm;
Airflow: 384-396 kg/min)
PCV ducting All pneumatic connections leading from and to the Pressure Control Valve (PCV) may not
be changed. Changes in length and diameter of the connections will have an significant ef-
fect on the wastegate control. Depending on the installation heat protection must be
foreseen.
Bending radius on tube
centerline
Valid installation The intercooler as well as the PCV must be installed vibration-decoupled from the engine.
positions
Compressor Compression housing must not be rotated. The wastegate functionality can be affected.
housing
Throttle lever Adjust Bowden cable such that throttle valve can be fully opened and closed. Use Bowden
cable with minimized friction so that the return spring on the throttle valve can open the
throttle valve completely.
Effectivity: 915 i A Series
Edition 0/Rev. 0
BRP-Rotax
INSTALLATION MANUAL

SYSTEM DESCRIPTION

System Limit
System Limit
System Limit
Min.
400 kg/h
Min.
Min.
60 mm
Max.
10 mbar
Max.
85 mbar
90 mbar
Max.
72–60–00
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December 01 2017