Kubota D1803-CR-E4 Workshop Manual page 177

MECHANISM
9. Aftertreatment system
PM warning level
Automatic active
regeneration
Automatic active
2-1
regeneration
Require parked
2-2 active regenera-
tion
Parked active re-
3 generation （with
output limitation）
Regeneration with
4 Diagmaster （with
output limitation）
Cleaning DPF
5 （with output limi-
tation）
D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4
Regeneration method
Parked active re-
generation
○ ×
× ○
× ○
× ×
× ×
Regeneration
Regeneration status
with service
tools
When the warning level
○ reaches 2, regeneration is
started automatically.
If PM warning level does not
fall to 0 within 30 minutes af-
○ ter started automatic active
regeneration, parked active
regeneration is required.
Automatic active regenera-
tion stops.
○ Require parked active re-
generation with machine
stop.
Parked active regeneration
becomes impossible.
○
Need to use Diagmaster for
regeneration.
Regeneration with Diagmas-
ter becomes impossible.
×
Need to change or clean
DPF.
4. ENGINE
Control
4. If the DOC temperature
is 550 ℃ (1022 ℉) or
higher, the PM com-
busts on its own so
post injection is not per-
formed (Passive regen-
eration state).
1. Stop the machine at
safty position.
2. The intake throttle
valve is operated re-
ducing the amount of
intake air raising the
exhaust temperature.
3. Engine speed is raised
and adjusted so that
the DOC temperature
rises to 250 ℃ (482 ℉)
or higher.
4. After the DOC reaches
250 ℃ (482 ℉) or high-
er, control is performed
the same as for auto
regeneration.
5. When regeneration is
finished, the operation
state is returned what it
was prior to auto regen-
eration (idle speed).
Regenerate using diagnostic
tool (Diagmaster).
－
4-77
KiSC issued 12, 2018 A