STARTING AND OPERATING
144
load conditions when ambient temperature is
above 100°F (38°C), and when fuel tank
level is below 10% which is a normal condi
-
tion of the fuel system and controls strategy.
Diesel equipped vehicles also have an
exhaust after-treatment system to reduce
emissions utilizing a DPF (refer to “Odor” in
this section for further information) and a
Selective Reduction Catalyst (SCR). The
SCR reduces Nitrogen Oxides (NOx) using
the Diesel Exhaust Fluid (DEF) system. DEF
is injected directly into the SCR through a
dosing module. This process will create a
clicking sound and at times, will make noise
even with the vehicle shut off. This is normal
as the DEF dosing module is purging DEF. If
at any time the check engine light is on,
please visit an authorized dealer.
Stopping The Engine
Idle the engine a few minutes before routine
shutdown. After full load operation, idle the
engine three to five minutes before shutting
it down. This idle period will allow the lubri
-
cating oil and coolant to carry excess heat
away from the combustion chamber, bear
-
ings, internal components, and turbo
-
charger. This is especially important for
turbocharged, charge air-cooled engines.
NOTE:
Refer to the following chart for proper engine
shutdown.
Diesel Particulate Filter (DPF) Manual
Regeneration - If Equipped (Chassis Cab
Only)
On equipped chassis cabs, a manual regen
-
eration can be enable through the instru
-
ment cluster. The manual regeneration will
allow the DPF to complete a regeneration,
lowering the soot level without having to
drive the vehicle. The vehicle must be in park
to access this feature, and the fuel level
must be over 12.5% full. A message
displaying the time left on the regeneration
will appear on the instrument cluster, and
the EVIC will display the soot level. Refer to
“Instrument Cluster Display” in “Getting to
Know Your Instrument Panel” for further
information.
Driving Condition
Load
Turbocharger Temperature
Idle Time (min.) Before Engine
Shutdown
Stop and Go
Empty
Cool
Less than One
Stop and Go
Medium
-
One
Highway Speeds
Medium
Warm
Two
City Traffic
Maximum GCWR
-
Three
Highway Speeds
Maximum GCWR
-
Four
Uphill Grade
Maximum GCWR
Hot
Five
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Содержание 2500 2019
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