Exhaust aftertreatment system
The engine features an exhaust aftertreatment
system (EATS) in the form of two mufflers. The first
one contains a diesel oxidation catalyst (DOC) and
a diesel particulate filter (DPF) to reduce emissions
of particulate matter (PM). The second one contains
a selective catalytic reduction catalyst (SCR) to
reduce nitrogen oxide (NOx) emissions.
AdBlue®/DEF is injected into the exhausts in order
to reduce NOx.
The DPF traps particles from the engine exhausts
and, since it is continuously loaded with these
particles from the exhausts, it needs to be
regenerated in order to burn off the particles.
Regeneration is also required to release trapped
sulphur (SO
2
) and other substances that are
trapped in the SCR and reduce the SCR's efficiency
if they are not removed.
In order to ensure reduction of NOx-emissions, the
EATS is monitored by the aftertreatment control
module (ACM).
For more information, see page
184
.
Delayed engine shutdown
(optional equipment)
This software function assists to ensure that the
engine is cooled before switching off the ignition. If
the machine is operated with high engine load, the
turbo needs to cool down at idle status before
engine shutdown. But this recommendation is not
always followed. Therefore, this software feature
helps operators maintain this approach. For more
information, see page
44
and
197
.
Presentation
11
To Next Page
Loading...
