DPF Systems
The VOLVO systems chemically alters soot by high heat into a harmless gas which passes
out through the stack pipe. At these high temperatures, the process is relatively rapid (10–12
minutes). Eventually, the filter must be removed to permit clearing away of the ash with
special equipment.
The DPF-muffler has an integrated heat insulation that covers most areas of the muffler. The
DPF mufflers are un-insulated at the V-clamp body connections, inlet and outlet pipes.
The following surface temperatures have been measured with the muffler freely positioned
in a room temperature environment with no forced cooling or wind (only self convection).
Note:
These are
not
maximum temperatures! The surface temperature in a certain vehicle
installations, is dependent on the degree of encapsulation and the airflow around the muffler.
Compact DPF Temperatures
Position
Thickness of
Heat Insulation
at exhaust
temperature of 350
°C (662 °F) at the
DPF-muffler inlet (no
regeneration)
at exhaust
temperature 450
°C (842 °F) at the
DPF-muffler inlet (no
regeneration)
Inlet section — top
10 mm (0.4 in.)
170 °C (338 °F)
190 °C (374 °F)
Inlet section — side
No insulation
260 °C (550 °F)
320 °C (608 °F)
DOC section
9 mm (0.35 in.)
175 °C (347 °F)
215 °C (419 °F)
DPF section
10.5 mm (0.41
in.)
145 °C (293 °F)
190 °C (374 °F)
Outlet section —
side
4.5 mm (0.18 in.)
100 °C (212 °F)
150 °C (302 °F)
Outlet section —
bottom
4.5 mm (0.18 in.)
120 °C (248 °F)
170 °C (338 °F)
Clamping area —
side
No insulation
230 °C (446 °F)
300 °C (572 °F)
Содержание D13J
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