Ford TRANSIT 2015 Owner's Manual page 128

to a diesel oxidation catalyst that reduces
the amount of harmful exhaust emitted
from the tailpipe. As soot gathers in the
system it begins to restrict the filter. The
soot that gathers inside the filter is cleaned
in two different ways, passive regeneration
and active regeneration. Both methods
occur automatically and require no actions
from the driver. During either one of these
regeneration methods, you may notice a
change in exhaust tone. At certain times,
the information display will display various
messages related to the diesel particulate
filter.
Diesel Particulate Filter Maintenance
Failure to carry out active or operator
commanded regeneration when advised
could result in a clogged diesel particulate
filter. If the diesel particulate filter fills
beyond the regeneration threshold, your
vehicle will disable the ability for active
and operator commanded regeneration.
This could result in irreversible damage to
the diesel particulate filter requiring
replacement that the Ford Warranty may
not cover. If your vehicle is not fitted with
operator commanded regeneration, check
with an authorized dealer for availability.
Passive Regeneration
During passive regeneration, the exhaust
system temperature and constituents
automatically clean the diesel particulate
filter, or reduce the soot level, by oxidizing
the soot. Cleaning occurs naturally during
normal engine operating conditions, at
varying levels depending on driving
conditions.
Transit (TTH) Canada/United States of America, enUSA, Edition date: 03/2014
Fuel and Refueling
Active Regeneration
Once the diesel particulate filter is full of
exhaust particles, the engine control
module will command the exhaust system
to clean the diesel particulate filter through
a process called active regeneration. Active
regeneration requires the engine computer
to raise the exhaust temperature to
eliminate the particles. During cleaning,
the particles convert to harmless gasses.
Once cleaned the diesel particulate filter
will then be ready to continue trapping
exhaust particles.
The regeneration process operates more
efficiently when you drive your vehicle at
a steady speed of 30 mph (48 km/h) or
above for approximately 20 minutes to
complete the process. The frequency and
duration of regeneration will fluctuate by
how you drive your vehicle, outside air
temperature, and altitude. For most driving,
regeneration frequency will vary from
100 mi (160 km) - 310 mi (500 km)
between occurrences and each occurrence
will last between 10 and 20 minutes. You
can usually reduce the duration of
regeneration if you maintain a constant
speed above 30 mph (48 km/h).
When the engine control module detects
that the diesel particulate filter is nearly
full of particulates, and you are not driving
your vehicle in a manner to allow effective
automatic cleaning, the information
display will show the following messages
as a reminder for you to drive in a manner
to clean the diesel particulate filter. If you
drive your vehicle in a manner to allow
effective automatic cleaning, the
information display will show a cleaning
exhaust filter message, which is the normal
regeneration process.
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