Edge Products CS User Manual page 23

U S E R
following guidelines:
1. Park the vehicle outdoors and
keep people, other vehicles, and
combustible material away from
it.
2. Do not leave the vehicle
unattended.
3. Do not connect any shop
exhaust hoses or vents to the tail
pipe.
CAUTION: Exhaust tempera-
tures may be greater than
300 C (572 F)during service
regeneration.
CAUTION: Due to the elevated
temperatures during this
procedure, open the hood and
keep the front of the vehicle
away from anything impeding
air fl ow to the radiator.
DPF REGENERATION
If you own a newer diesel
powered vehicle, your vehicle is
equipped with a diesel particu-
late fi lter ( DPF). This fi lter is
used in conjunction with a die-
sel oxidation catalyst. Together
they work to reduce the amount
of soot and emissions emitted
from the tailpipe. As soot builds
up in the DPF it will begin re-
stricting the fi lter. The soot that
gathers is automatically purged
in one of two ways: Passive
Regeneration & Active Regen-
eration. Both methods occur
automatically and require no ac-
G U I D E
O P E R A T I N G I N S T R U C T I O N S
tion on your part. During either
of these regeneration methods,
you may notice an increase or
change in the exhaust noise &
increased EGT.
PASSIVE REGENERATION
Passive regeneration occurs
when the exhaust temperature
( EGT) reaches an appropri-
ate level in order to oxidize
or burn soot to clean the DPF.
This method can happen as a
result of normal engine operat-
ing conditions, typically when
the engine reaches an EGT high
enough to burn off the soot (i.e.
heavy towing, high load condi-
tions etc.) If EGTs do not get
hot enough to cause passive
regeneration, then your truck's
engine-control system automati-
cally initiates an active regen-
eration.
ACTIVE REGENERATION
During active regeneration,
the truck computer cleans the
DPF by raising the exhaust
temp to a point where the soot
is burned away. This is accom-
plished through various engine
actions which raise the EGTs
in the oxidation catalyst/ DPF
system to a level where the soot
is burned off. After the soot
is burned off, the EGTs and
back-pressure (restriction) fall
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