Mack V-MAC IV, Руководство оператора

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22 V-MAC Co-Pilot Operator's Manual
Engine Derate
For some conditions (see table below), an engine derate can occur first and if a
condition worsens, then an engine shutdown can occur.
CONDITION ENGINE DERATE
ENGINE
SHUTDOWN
INDI-
CATOR
LIGHTS
Intake Manifold
Air Temperature Derate starts at 120°C (248°F).
Full derate (100%) occurs when
temperature is at 140°C (284°F). No engine
shutdown. No warning
indicators.
Engine
Turbocharger
Compressor Outlet
Temperature Derate starts at 245°C (473°F).
Torque is derated down to 100%
at 250°C (482°F).
No engine
shutdown. No warning
indicators.
If temperature exceeds 220°C
(428°F) for more than 20 seconds
with a 30 second period, derate
starts. Engine
Exhaust Gas
Recirculation
(EGR)
Temperature
If temperature reaches 240°C
(464°F), a 100% derate occurs.
No engine
shutdown. No warning
indicators.
Crankcase
Pressure (CCP) If a change in pressure (difference
between the CCP and barometric
pressure (BARO)) rises about 5
kPa (
0.725 psi ) with an offset & 0.5
kPa/s (
0.07 psi/s
) and stays over 5
kPa ( 0.725 psi ) for more than 80%
of the time during 1 second, the
engine will fully derate (100%), be
forced to idle, and shut down.
Engine shutdown. Red engine
shutdown
indicator.
Derate starts at 106.75°C
(
224.15°F ) and ramps down
to 12% derate. Torque is kept
constant until the temperature
reaches 107.25°C (
225.05°F ).
Amber
malfunction
indicator lights
at 107.2°C
(
224.96°F ).
Derate starts again at 107.4°C
(
225.32°F) and ramps down to
32% derate.
Red engine
shutdown
indicator lights
at 108°C
(
226.4°F ).
High Engine
Coolant
Temperature
(ECT)
Torque is derated down to 100% at
108.4°C (
227.12°F ).
Engine
shutdown if
temperature
rises to 109°C
(
228.2°F
).
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