Effectivity: 914 Series BRP-Powertrain page 7-9
OM Edition 2 / Rev. 0 April 01/2009
d04479.fm
7.5) Turbo charger and control system
General note The ROTAX 914 engine is equipped with an exhaust gas turbo-
charger, making use of the energy in the exhaust gas for precom-
pression of the intake air (boost pressure).
Regulation boost
pressure
The boost pressure in the airbox is controlled by means of an elec-
tronically controlled flap (wastegate) in the exhaust gas turbine.
NOTE: The wastegate regulates the speed of the turbo-
charger and consequently the boost pressure in
the airbox.
Throttle position See Fig. 5
The required nominal boost pressure in the airbox is determined
by the throttle position sensor mounted on the carburetor 2/4. The
sensor’s transmitted position is linear from 0 to 115 % correspond-
ing to a throttle position from idle to full power.
Fig. 5
03044
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