Dpf Regeneration Explained - Edge Products Juice Attitude CTS2 User Manual

DPF Regeneration Explained

CAUTION: Exhaust temperatures may be greater than 300C (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 flow to the radiator.
DPF REGENERATION
If you own a newer diesel powered vehicle, your vehicle is equipped with
a diesel particulate filter (DPF). This filter is used in conjunction with a
diesel 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 restricting flow. The soot that gathers is automatically
purged in one of two ways: Passive Regeneration & Active Regenera-
tion. Both methods occur automatically and require no action on your
part. During either of these regeneration methods, you may notice an
increase or change in the exhaust noise & increased Exhaust Gas Tem-
perature (EGT).
PASSIVE REGENERATION
Passive regeneration occurs when the exhaust gas temperature (EGT)
reaches an appropriate level in order to oxidize or burn soot to clean the
DPF. This method can happen as a result of normal engine operating
conditions, typically when the engine reaches an (EGT) high enough to
burn off the soot (i.e. heavy towing, high load conditions, etc). If EGTs
do not get hot enough to cause passive regeneration, your truck's en-
gine-control system automatically initiates an active regeneration.
ACTIVE REGENERATION
During active regeneration, the truck computer cleans the DPF by rais-
ing the exhaust temp to a point where the soot is burned away. This is
accomplished 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 back to normal levels. In order to help you know the status of DPF
Regeneration, the device will show in the alerts section of the drop down
menu anytime active regeneration is happening.
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Diagnostics