Exaust Aftertreatment Devices; Catalyst-Containing Diesel Particulate Filter (Dpf) Device; Regeneration Of Diesel Particulate Filter (Dpf) - Kubota SSV65 Operator's Manual

20 CHECKS BEFORE START

EXAUST AFTERTREATMENT DEVICES

BCatalyst-containing Diesel Particulate
Filter (DPF) device
This after-treatment device has two functions: reducing
certain emissions, like hydrocarbon (HC) and carbon
monoxide (CO), to innoxious carbon dioxide and water,
and trapping and elimination PM (Particulate Matter)
through the filter at the same time.
Following EPA regulations, it is necessary to service the
DPF, such as renewing or cleaning the filter at regular
intervals.
Be sure to carefully read this Operator's Manual before
using the machine. The machine owner and operator are
responsible for handling this device correctly to protect
the environment and to prevent damage to the DPF, and
comply with Federal and state regulations.
C Handling instructions
A Fuel
Be sure to use ULTRA LOW SULFUR FUEL (S15).
Use of other diesel fuel other than this may adversely
affect the engine and the emission control device and may
damage them.
A Engine oil
Use DPF-compatible engine oil (CJ-4 or CK-4). Any
unspecified oil may damage the DPF earlier than
expected and lower fuel economy.
A If you use different fuel or engine oil, the cleaning
interval of the DPF (3000 hours) can't be secured and
the DPF will be clogged in a shorter time than
expected.
C Prohibited unnecessary idling
Generally speaking, the lower the engine rpm is, the lower
the exhaust gas temperature is. It is more difficult to burn
PM (Particulate Matter) in the DPF. With this in mind, do
not keep the engine idling unnecessarily.
If you leave the machine with the engine running, to
protect the DPF the engine can stop automatically.
C DPF regeneration system
On the Kubota SSL, the ECU prompts DPF-regeneration
cycle. When starting the engine, Auto Regeneration Mode
is set by default. When all the conditions are met,
regeneration automatically starts, unless the inhibit switch
is engaged.
BRegeneration of Diesel Particulate Filter
(DPF)
To avoid personal injury or death:
A When the DPF is in the regenerating mode, the
exhaust gas and the DPF muffler become hot.
During the regeneration, take into account that
the muffler will be very hot and keep the
machine away from other people, animals,
plants, and flammable material. Also keep the
area near the DPF muffler clean and away from
flammable material.
A Do not leave the machine during DPF
regeneration.
The DPF level of PM during operation is indicated by
indicator symbol and buzzer.
(1) DPF regeneration indicator
(2) Engine rev up warning lamp
A During DPF regeneration cycle keep the surrounding
environment in mind. Do not allow the ambient
temperature to rise excessively due to heat from the
regeneration. If such occurs, activate the inhibit
switch.
A The DPF regeneration cycle only starts in the following
conditions. If any of the conditions are not met, the
DPF regeneration cycle may be interrupted.
(1) Coolant temperature above 65 C
(2) DPF temperature above 250 C
(3) Engine rpm above 1200 rpm
A The regeneration usually takes about 15-20 minutes.
It depends, however, on the outside air temperature,
exhaust gas temperature and filter PM level.
A Do not attempt to interrupt the DPF regeneration cycle
unnecessarily.