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Fuel System
The low-pressure electric fuel pump draws fuel from the fuel tank
through the fuel filter housing. The housing includes an electric
fuel pump, strainer, filter, drain valve, Water in Fuel (WIF) sensor,
and Engine Fuel (EFP) sensor. If equipped, an optional fuel
heater element is located in the fuel filter housing. Conditioned
fuel is pumped through the intake manifold and cylinder head to
the fuel injectors.
The WIF sensor detects water in the fuel system. When a
programmed value of water is collected in the fuel filter housing,
the FUEL FILTER lamp will illuminate. The collected water must
be removed immediately. The water is drained by using the
drain valve located on the fuel filter housing.
Engine Features
Exhaust Aftertreatment (AFT) System
The exhaust AFT system processes engine exhaust to meet
tailpipe emission requirements.
particulate matter (soot) using a Diesel Particulate Filter (DPF).
The trapped particulate matter is then rendered to ash by
heating the exhaust and injecting fuel through a process called
regeneration.
Regeneration reduces the frequency of AFT
system maintenance without adversely affecting emissions.
SECTION 1 – ENGINE SYSTEMS
The AFT system traps
For further information, see Aftertreatment System (page 50).
Cold Ambient Protection (CAP)
CAP keeps the engine warm during cold temperatures and
may provide better fuel economy, increased operator comfort,
and improved engine performance. This feature should only
be disabled for specialized applications. Engine damage may
occur if CAP is disabled.
CAP maintains engine coolant temperature by increasing engine
rpm to a programmed value when ambient air temperature is
below 0 °C (32 °F), coolant temperature is below 65 °C (149 °F),
and engine has been idling at no load for over 5 minutes.
For further information, see Cold Ambient Protection (CAP)
(page 54).
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