► Continuing
FAIL
INERT SEP FAIL
Exhaust System
The exhaust gases are evacuated through exhaust stubs located on the sides of
engine cowlings.
Engine Accessories
Fuel Control Unit (FCU)
The FCU is an electro-hydro-mechanical device (servo-valves) that modulates the
fuel flow sent to the engine combustion chamber within the entire operational
envelope of the engine.
The FCU is mounted on the accessory gearbox, rearwards of the engine.
Fuel High Pressure Pump (HP)
The fuel HP pump is part of the FCU. The FCU pumping stages are directly driven
off an integrated driveshaft which interfaces with the accessory gearbox.
Fuel provided by the engine driven main pump (mechanical) enters the FCU
through the low pressure pump (regent wheel), then flows into the engine mounted
fuel heater prior returning to the FCU HP pump (gear pump) through the engine
fuel filter.
In case of contamination of the engine fuel filter, a bypass valve allows fuel to go
directly from the FCU to the downstream fuel nozzles.
Oil Pump
The oil pump is a self-controlled gear pump located at the bottom of the oil casing.
Permanent Magnet Alternator and Ng Determination
The Permanent Magnet Alternator is a dual-wound three-phase unit installed on
the FCU, driven by the gas generator spool.
It provides electrical power to the FADEC when the engine is running.
The Permanent Magnet Alternator frequency is sensed by the FADEC and used to
derive the gas generator speed (Ng).
Section 7
Description
Pilot's Information Manual
PIM TBM 960 - Edition 0
Rev. 02
Page 7.6.23
PIM - DO NOT USE FOR FLIGHT OPERATIONS