Diesel Particulate Filter Regeneration (continued)
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
Passive Occurs during normal operation of the
machine at high-engine speed or high-
engine load
• The InfoCenter does not show an
icon indicating passive
regeneration.
• During passive regeneration, the
DPF processes high-heat
exhaust gasses, oxidizing
harmful emissions, and burning
soot to ash.
Refer to Passive DPF Regeneration.
Assist Occurs because of low-engine speed, low-
engine load, or after the computer detects
the DPF is becoming obstructed with soot
• The InfoCenter does not show an
icon indicating assist
regeneration.
• During assist regeneration, the
engine computer adjusts the
engine settings to raise the
exhaust temperature.
• Refer to Assist DPF
Regeneration.
Reset Occurs every 100 hours
• When the high exhaust-
temperature icon is shown
in the InfoCenter, a regeneration
is in progress.
• During reset regeneration, the
engine computer adjusts the
engine settings to raise the
exhaust temperature.
Refer to Reset Regeneration.
Also occurs after assist regeneration only if
the computer detects that assist
regeneration did not sufficiently reduce the
soot level
3466-702A Page 5–23 Operation: During Operation
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