Mosa RENTAL GE 50 KR-5, Руководство по эксплуатации и обслуживанию

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6. Operation
40
6.6 Exhaust post-treatment
Generating sets with engines complying with STAGE V exhaust gas regulations require special devices to
reduce the emissions of pollutants in exhaust gases.
Depending on the engine output, the after-treatment system includes the following devices:
•
Doc (Diesel Oxidation Catalyst): catalyst to purify exhaust gases
•
DPF (Diesel Particulate Filter): particulate filter that captures soot in exhaust gases
•
SCR (Selective Catalytic Reduction): device that purifies nitrogen oxides (NOx) in engine exhaust gases.
On engines with power from 19 kW to 56 kW, there are DOC and DPF devices.
On engines with a power greater than 56 kW, there are Doc, DPF and SCR devices.
6.6.1
Particle filter (DPF) regeneration
Regeneration is the term used to describe DPF cleaning.
During this process, the particulate is subjected to further oxidation within the DPF.
The exhaust gas temperature inside the DPF exceeds 600°C, burning the particle matter.
The table below describes the particle accumulation level, the indicator lights that light up on the panel, the
engine performance limits and any operator intervention required.
Indicator
light
Particle percentage
Level
Engine horsepower Action required
D5260470
0% - 30% 0
No derating
No action required.
Regeneration is automatic.
30% - 80% 1
80% - 90% 2
D5260320
D5260470
90% - 100% 3 No derating
Manual (forced) regenera-
tion required
D5260320
D5260470
D5260480
100% - 110% 4 Engine derating
Manual (forced) regenera-
tion required
D5260320
D5260480
> 110%
5
Significant derating
Service regeneration.
Consult an authorised
Kohler workshop.