Kubota M5-091, Operator'S Manual

Page: 37 / 176

13 OPERATING THE ENGINE
DIESEL PARTICULATE FILTER (DPF)
MUFFLER
This tractor is equipped with an engine with a DPF (Diesel
Particulate Filter) muffler which serves to reduce
hydrocarbons, carbon monoxide and other gases, all of
which are contained in diesel engine emissions, to
harmless carbon dioxide and water. The DPF also traps
PM (particulate matter).
Please handle exhaust aftertreatment devices correctly
and in an environmentally responsible manner.
B
Handling Points
When a specific amount of PM (particulate matter) has
accumulated in the DPF muffler, it is necessary to refresh
the DPF muffler by burning the PM inside it. This burning
off work is called "Regeneration".
To extend operating time to reach this regeneration, and
to avoid DPF muffler trouble, make sure to observe the
following handling matters.
B
DPF Regeneration Process
DPF regeneration process can be performed by choosing
from "Auto Regeneration" or "Regeneration inhibit" mode
according to your job conditions. For jobs not affected by
hot gases emitted during regeneration, the "Auto
Regeneration" is advisable.
A If stop the engine once, the "Auto Regeneration" mode
will be activated.
(1) Diesel Particulate Filter (DPF)
C
Fuel
Be sure to use Ultra Low Sulfur Fuel (S15).
A Use of diesel fuel other than Ultra Low Sulfur Fuel
may adversely affect the engine and DPF
performance.
Use of fuels other than Ultra Low Sulfur Fuel (S15)
may not meet regulations for your region.
C
Engine oil
Use DPF-compatible oil (CJ-4) for the engine.
A If any engine oil other than CJ-4 is used, the DPF
may become clogged earlier than expected and the
fuel economy may drop.
C Prohibition of unnecessary idling operation
Generally, the lower the engine speed, the lower the
exhaust gas temperature is, so the PM contained in
exhaust gas will not be burnt, and begins to accumulate.
Therefore, don't idle unnecessarily.
C
Regeneration
When there is "Regeneration" instruction sign by lamp or
buzzer, immediately perform the required procedure for
regeneration.
A Interrupting the regeneration cycle or continued
operation by ignoring the warning signs may cause
DPF and engine damage.
C Auto Regeneration Mode;
When starting the engine (switch operation is
unnecessary), the "Auto Regeneration" mode is
automatically activated.
With the auto regeneration mode on, when a specific
amount of PM has accumulated, and the regeneration
conditions are satisfied (See the "Tips on Diesel
Particulate Filter [DPF] Regeneration"), the DPF will be
automatically regenerated whether the tractor is in
motion or parked.
By this way, work efficiency is improved. For details of
auto regeneration, refer to "Operating Procedure for
Auto Regeneration Mode" section.
C
Regeneration Inhibit Mode;
After starting the engine, if the "DPF INHIBIT switch" is
pressed to turn on the switch lamp, the "Regeneration
inhibit" mode will be activated.
With "Regeneration Inhibit" mode on, the PM which has
accumulated inside the DPF will not be burnt, unless the
operator performs the regeneration work manually.
The "Regeneration Inhibit" mode is effective for work in
poorly ventilated work spaces.
For details of regeneration prohibition, refer to
"Operating Procedure for Regeneration Inhibit Mode"
section.