PREVOST X3-45 COMMUTER 2018 Operator'S Manual Download

Page: 75 / 172

OTHER FEATURES 5-5

PA1633 X3-45 Commuter Operator’s Manual

Initiating a Stationary (Parked) Regeneration

NOTE

At starting of the engine, if a stationary
regeneration is required, the engine coolant
temperature must reach 140°F (60°C) before
any stationary regeneration may be initiated
and completed. Permit the engine to idle for a
short while or drive the vehicle until engine
temperature increases sufficiently.

WARNING

Do not initiate a stationary regeneration in a
closed area like a garage. Stationary
regenerations must be undertaken outdoors
only.

WARNING

During stationary regeneration, exhaust
temperature may reach up to 842°F (450°C) at
the particulate filter,  it will go down to 788°F
(420°C)  after the catalytic converter  and  then
will be further reduced to 554°F (290°C) at the
diffuser outlet. Before initiating stationary
regeneration, make sure that the exhaust
outlet diffuser is clear of objects and that no
one is working close to  the  exhaust  outlet
diffuser.

WARNING

Hot surfaces. Keep yourself clear of all hot
Aftertreatment Device components, particularly
during and after active or stationary
regeneration. Hot surfaces can cause serious
burns.

NOTE

STATIONARY REGENERATION

This process requires the vehicle to be parked
while the driver or a maintenance technician
initiates the regeneration process.

The

DPF REGENERATION

telltale light

illuminates to notify the driver of the need and
urgency of a manual stationary regeneration.

DPF REGENERATION telltale light

If stationary regeneration is not performed, this
telltale light will blink, indicating that a stationary

regeneration is required immediately. If
stationary regeneration is still not performed,
“engine power derate and shutdown” sequence
may occur as per level 1 to level 4 sequence.

To initiate a stationary regeneration:

•

Park the vehicle in a clear area, vehicle

speed must be 0 mph (0 km/h);

•

Engine must be on normal idle and fully

warmed up (coolant temperature above
140°F/60°C);

•

Apply parking brakes and set the

transmission to neutral (N).

•

Press the DID ENTER button and then get to

the DID Aftertreatment menu. Select sub-
menu Request Parked REGEN and press
ENTER button to confirm and initiate
regeneration.

The regeneration will begin. Turn off the air
conditioning to reduce engine load. The engine
idling speed will increase to 1200 rpm. Once the
regeneration is completed, the engine speed will
return to normal idle.

Voluntary Interruption of a Stationary
Regeneration

It is possible to interrupt a stationary
regeneration at all time. To do so, get to the
DID’s Aftertreatment menu, select Cancel
REGEN and press ENTER button to confirm.
You can stop regeneration simply by releasing
the parking brake. Use this procedure in order to
move the vehicle in a safe area.

CAUTION

To avoid damages to the system components,
do not set the ignition key to the OFF position
to interrupt a stationary regeneration.

If regeneration is interrupted, it is very important
to reinitiate the regeneration as soon as possible.

SELECTIVE CATALYTIC REDUCTION UNIT

Selective Catalytic Reduction (SCR) is a
technology that uses Diesel Exhaust Fluid (DEF)
and a catalytic converter to reduce nitrogen
oxides (NOx) emissions.

SCR is an exhaust aftertreatment system that
injects small amount of DEF into the exhaust
gas between the DPF and the selective
reduction catalytic converter. DEF turns to
ammonia and carbon dioxide when heated. The