PREVOST X3-45 Multiplex, Руководство по обслуживанию

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Section 04: EXHAUST SYSTEM
PA1562
3
1.2 FLEXIBLE COUPLING INSTALLATION
The flexible coupling contains a rigid interior
pipe (Fig. 2). To allow appropriate flexibility once
installed, be sure interior pipe is concentric to
flexible part and that the flexible coupling is
straight when installed. This piece of equipment
handles vibration and thermal expansion.
CAUTION
Adequately support the exhaust system line.
The load of the exhaust line
must not be
transferred to the turbocharger.
FIGURE 2: FLEXIBLE COUPLING
04022
2. AFTERTREATMENT DEVICE (ATD)
Besides trapping soot, the DPF ( Diesel
Particulate Filter ) also traps the ash that has
been generated when additives in engine oil are
burned. However, unlike soot, ash cannot be
oxidized. The ash that accumulates in the filter
will eventually cause an increase in exhaust
back pressure. DDEC VI or EMS will constantly
monitor the ash accumulation and forecast the
approximate time until DPF ash cleaning is
required. This allows you the opportunity to plan
for the DPF ash cleaning interval. If ash cleaning
is not performed proactively, and the back
pressure increases beyond the system limit,
DDEC VI or EMS will flag the amber warning
light on the telltale panel, notifying the operator
that an ash cleaning is required. Clean
remanufactured DPF cartridge will be available
through Detroit Diesel on an exchange basis.
For most vehicle applications and duty cycle,
this will occur after approximately 200,000-
400,000 miles (320,000-640,000 km) of
operation.
FIGURE 3: AFTERTREATMENT DEVICE (ATD USED
WITH DDC S60 ENGINE SHOWN, ATD USED WITH
VOLVO D13 ENGINE IS SLIGHTLY DIFFERENT)
04016
WARNING
HOT SURFACES
Keep yourself clear of hot Aftertreatment
Device surfaces, particularly during and after
active or stationary regeneration. Hot surfaces
can cause serious burns.
Make sure Aftertreatment System
components are cold before handling.
WARNING
HOT EXHAUST
During stationary regeneration, exhaust gases
temperature may reach up to 1200°F (650°C)
at the DPF outlet. Do not direct at combustible
materials. Before initiating stationary
regeneration, make sure that the DPF outlet
diffuser is clear of objects and that no one is
working near the DPF outlet diffuser.
Stationary regenerations must be undertaken
outdoors only.
Never initiate regeneration when exhaust gas
collection system is in place.