Manitowoc 18000, Руководство по техническому обслуживанию, Страница: 261 / 316

Reference
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Manitowoc
Published 12-05-17, Control # 035-23
7-17
18000 SERIVCE/MAINTENANCE MANUAL POWER TRAIN
7
DIESEL PARTICULATE FILTER — TIER 4
General
The Diesel Particulate Filter (DPF) — located in the engine
enclosure — captures soot and ash from the engine exhaust.
• Soot is partially burned fuel particles that occur during
normal operation (black smoke).
• Ash is partially burned engine oil particles that occur
during normal operation.
Over time, both soot and ash are collected in the DPF and
must be removed.
• Soot is removed by a process called regeneration .
• Ash is removed by manually cleaning the DPF at
specified intervals (see Engine Manufacturer’s Manual
for detailed instructions).
Regeneration
General
Regeneration is the process of converting the soot collected
in the DPF into carbon dioxide. Regeneration requires heat
to occur. Two types of regeneration are used: passive and
active.
Passive Regeneration
Passive regeneration occurs when exhaust temperatures
are naturally high enough to oxidize the soot faster than it is
collected in the DPF.
The process typically occurs when the crane is operated at
high speeds and/or under heavy loads.
The operator will not know when passive regeneration is
occurring.
Active Regeneration
Active regeneration occurs when exhaust temperatures are
NOT naturally high enough to oxidize the soot faster than it is
collected in the DPF. If this happens, the engine’s controller
will initiate the process (see Engine Manufacturer’s Manual
for detailed instructions).
The process occurs more frequently in cranes operated at
low speed, light or no load, or stop and go cycles.
Active regeneration will be transparent to the operator,
except that he/she may notice an increase in turbocharger
noise and an increase in exhaust temperature (high exhaust
temperature condition light comes on).
NOTE: Use the INHIBIT switch in the operator’s cab only
for special circumstances where it is desirable to
disable active regeneration. Prolonged engine
operation with INHIBIT on will cause the DPF to fill
with soot. Too much soot could cause the engine to
stop. If that occurs it will be necessary to clean the
DPF before the engine can be restarted.
Stationary Regeneration
Stationary regeneration is a form of active regeneration that
is initiated by the operator when the crane is parked. The
DPF ON light will flash to alert the operator if stationary
regeneration is required (see Section 3 of the Crane
Operator Manual and the Engine Manufacturer’s Manual for
detailed instructions).
FIGURE 7-14
Item Description
1 Exhaust Outlet Tube
2 Outlet Tube V-Band Clamp and Gasket
3 Engine Enclosure Mounting Bracket
4 DPF Lifting Bracket
5 DPF Exhaust Inlet
6 Inlet Tube V-Band Clamp and Gasket
7 DPF Mounting Strap
8 Inlet Tube
5
1
3
4
6
2
4
7
7
8