MOONEY INTERNATIONAL CORPORATION
M20V SERVICE AND MAINTENANCE MANUAL
Date
MAR 2017
Rev Date
Page
5
81-00-00 - GENERAL
TURBOCHARGER OPERATION
The turbocharger increases the power output and effi-
ciency of the engine by supplying compressed air to the
intake manifold. The engine exhaust is routed to the
turbine wheel of the turbocharger assembly. The
amount of exhaust gas passing over the turbine wheel
is controlled by a wastegate assembly. Exhaust gas
passing over the turbine wheel causes the compressor,
mounted on the same shaft, to rotate. Ambient ram air,
supplied through an air intake on the lower cowling, is
filtered and routed to the compressor where it is com-
pressed and delivered to the engine. As engine power
is increased, the flow of exhaust over the turbine wheel
also increases, resulting in a proportionate increase in
the speed of the rotating assemblies and turbocharger
output.
81-10-00 - TURBOCHARGER CONTROL
81-10-01 - TURBOCHARGER CONTROL SYSTEM
The turbocharger output is controlled through coordi-
nated action of the Density/Differential Pressure Con-
troller system when set up properly.
-CAUTION-
It is mandatory that the turbocharger system
be properly adjusted prior to operation. See
Chapter 71-00-52 for engine set up procedures.
TURBOCHARGER OVERBOOST PROTECTION
The engine incorporates overboost protec
tion within
the pressure controller. See Chapter 71-00-52.
Refer to Continental Motors Inc. Service and Mainte-
nance Manuals for detailed maintenance data.
81-10-02 - ALTERNATE AIR SYSTEM - TURBO-
CHARGER OPERATION
The turbocharger system will continue to operate when
the primary air source is obstructed. An engine auto-
matic alternate air system is provided to allow air from
inside the cowling to pass through the compressor and
into the engine. This air is warmer than primary air so
less power will be available at normal throttle settings.
-NOTE-
Inspection of the induction system and turbo-
charger assembly should be conducted after any
obstruction of the primary air source prior to the
next engine operation.
81-00-00
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