Fig. 11 Principle of treatment devices
1
Engine control unit (ECU)
a
Common rail system
2
Engine block
3
Exhaust gas return valve (EGR)
4
Inlet throttle
5
Intercooler
6
Cooler exhaust gas return (EGR)
7
Air flow meter
8
Turbocharger
b
Exhaust gas treatment system
9
Diesel oxidation catalytic converter (DOC)
10
Diesel particulate filter (DPF)
11
Sensors
12
SIGMA CONTROL SMART controller
Diesel oxidation catalytic converter (DOC):
The diesel oxidation catalytic converter uses the fuel which has not been burnt during final injection
for the active regeneration of the diesel particulate filter. The diesel oxidation catalytic converter
serves a source of heat for the regeneration of the diesel particulate filter.
Diesel particulate filter (DPF):
The diesel particulate filter is used for reducing the particulate present in the diesel engine exhaust
(fine solids and mostly soot). Nearly all of these particles are trapped in the filter and burnt to CO
2
at high exhaust gas temperature.
At a low exhaust gas temperature when the particulate does not burn spontaneously, a pressure
difference occurs between inlet and outlet of the diesel particulate filter. This initiates a regenera‐
tion of the filter,
during which the soot is removed. Regeneration is activated when the filter medium is saturated
with soot to a certain degree.
4.8 Options
The options available for your machine are described below.
4
Design and Function
4.8
Options
52
Operator Manual Portable Rotary Screw Compressor
MOBILAIR M82 SIGMA CONTROL SMART
No.: 901783 08 USE