Types of Diesel Particulate Filter Regeneration
Types of diesel particulate filter regeneration that are performed while the machine is operating:
Type of Regeneration
Conditions that cause DPF regeneration
DPF description of operation
• The InfoCenter does not display an icon indicating
passive regeneration.
• During passive regeneration, the DPF processes
high-heat exhaust gasses, oxidizing harmful
emissions, and burning soot to ash.
Passive
Occurs during normal operation of the machine at
high-engine speed or high-engine load
Refer to
Passive DPF Regeneration (page 40)
.
• The InfoCenter does not display an icon indicating
assist regeneration.
• During assist regeneration, the engine computer
adjusts the engine settings to raise the exhaust
temperature.
Assist
Occurs because of low-engine speed, low-engine
load, or after the computer detects the DPF is
becoming obstructed with soot
Refer to
Assist DPF Regeneration (page 40)
.
Occurs every 100 hours
Also occurs after assist regeneration only if the
computer detects that assist regeneration did not
sufficiently reduce the soot level
• When the high exhaust-temperature icon
is displayed in the InfoCenter, a regeneration is in
progress.
• During reset regeneration, the engine computer
adjusts the engine settings to raise the exhaust
temperature.
Reset
Refer to
Reset Regeneration (page 41)
.
Types of diesel particulate filter regeneration that require you to park the machine:
Type of Regeneration
Conditions that cause DPF regeneration
DPF description of operation
Occurs because the computer detects back
pressure in the DPF due to soot buildup
Also occurs because the operator initiates a parked
regeneration
• When the reset-standby/parked or recovery
regeneration icon
or
ADVISORY
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displays in the InfoCenter, a regeneration is
requested.
May occur because you set the InfoCenter to inhibit
reset regeneration and continued operating the
machine, adding more soot when the DPF already
needs a reset regeneration
• Perform the parked regeneration as soon as
possible to avoid needing a recovery regeneration.
May result from using the incorrect fuel or engine oil
• A parked regeneration requires 30 to 60 minutes
to complete.
• You must have at least a 1/4 tank of fuel in the
tank.
• You must park the machine to perform a parked
regeneration.
Parked
Refer to
Parked or Recovery Regeneration (page
.
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