Mosa RENTAL Use And Maintenance Manual page 27

DPF REGENERATION STRATEGIES
REGENERATION
Level 0 (0 – 30%)
Automatic
Level 1 (30 – 80%)
Regeneration
Level 2 (80 – 90%)
Manual Level 3 (90 – 100%)
Regeneration Level 4 (100 – 110%)
Service
Level 5 ( >110%)
Regeneration
AUTOMATIC REGENERATION
The automatic regeneration of the DPF does not require any
intervention by the operator, on the gen-set controller
the after-treatment icon screen may appear with
activation of the "High exhaust system temperature
warning light" in case of active regeneration.
MANUAL REGENERATION
When the PDF clogging level reaches a certain threshold, as
indicated in the DPF REGENERATION STRATEGIES table, the
system requests the execution of forced regeneration.
The request is indicated by the activation of the "ATT
filter warning light" and the "High exhaust system
temperature warning light".
As soon as it is possible to interrupt the work session,
disconnect the load connected to the gen.set or open
the machine main switch, leave the engine running
until regeneration is complete.
The time required for cleaning the PDF depends on the degree
of clogging, the ambient temperature and the temperature
of the exhaust gases.
ATTENTION
!
DO NOT OPEN THE MAIN SWITCH OF THE MACHINE
(Z2) DURING THE REGENERATION PROCESSES.
SOOT LEVEL
PASSIVE REGENERATION
A natural and continous cleaning process.
It occurs during normal engine operating conditions. Passive regene-
ration does not impact machine operation or require operator involve-
ment (250-500 °C)
PASSIVE ASSISTED REGENERATION
Passive regeneration can be induced by intervening on air intake
throttle (ETB) to increase the exhaust gas temperatures (EGT) without
impacting on productivity and fuel consuption (250-500 °C)
By intervening on the air intake throttle the conbustion air flow decrease,
therefore the exhaust gas temperatures increase without to increase the
fuel delivery, that means no increment of the fuel consuption
ACTIVE REGENERATION PROCESS
Active regeneration cleaning occurs only when passive regeneration
is not possible based on temperature, load and speed. This requires
post-injecting fuel thus elevating exhaust temperatures to clean the
filter. It serve sas a backup process (500-650 °C).
By post-injecting fuel the exhaust gas temperatures increase but that
means the fuel consuption increase. Higher temperature requires safer
environment.
FORCED REGENERATION PROCESS
If passive and active regenerations attempts have falled and, as a
result exhaust gas back-pressure has become excessive, the machine
will soon go in "limp mode". When this happen the only option left is
a forced regeneration managed by the operator machine. Oil and fuel
consumptions increase. Duty cycle interrupted
SERVICE REGENERATION PROCESS
Carried out during service activity by means of a service tool.
ATS - AFTER TREATMENT SYSTEM
REGENERATION PROCESSES
DANGER
During DPF regeneration operations, the temperature of
the gases themselves is high enough to cause burns, fire
or melt materials.
Avoid potential fire and explosion hazards from flammable
materials or vapours in the vicinity of the exhaust.
Keep the exhaust outlet away from people or anything that
can melt, burn or explode.
• Before starting the DPF regeneration procedure, make
sure that there are no people, animals or flammable
material in the vicinity and that the place is well ventilated.
• Keep the machine away from people, animals or structures
that may be damaged by the heat of the exhaust gases.
• Carefully check the machine and the surrounding area for
glowing residue during and after DPF regeneration.
KOHLER
!