Intelligent Powertrain Management (Ipm) - freightliner M2 Plus 2023 Manual

Driver Assistance Features
If a door is opened without the park brake being set
when the hold function is active, the horn sounds
and a visual warning activates on the driver display.
If the seat occupancy sensor registers an empty seat
under the same conditions, the same warnings are
triggered. Warnings cease when the condition that
triggered the warning is corrected.
Intelligent Powertrain
Management (IPM)
NOTE: IPM is standard with a DT12
transmission; IPM is not available with an Eaton
or Allison transmission.
IPM is an optional fuel savings application that
functions as a predictive cruise control. Using 3D
digital map technology and GPS, IPM evaluates the
upcoming road grade about a mile in advance to
determine the best use case for most fuel-efficient
vehicle speed and gear selection.
The IPM active telltale illuminates on the driver
display when an IPM mode is activate. See
Fig. 7.10.
1. IPM Active Telltale
Fig. 7.10, IPM Active Telltale, ICUC
The 3D digital map database contains profile
information for over 200,000 highway miles (322,000
km) in the 48 contiguous United States, the Trans-
Canada Highway, and most major Canadian
highways.
7.5
Using these maps, IPM varies the cruise speed,
depending on the approaching road grade.
For a vehicle equipped with the Economy Package,
the default variance is +5/–4 mph (+8/–6 km/h). If the
engine brake is enabled, IPM may automatically
engage the engine brake at speeds higher than the
cruise set speed.
Key predictive features of IPM are:
•
Steep Mountain Mode — applies if the vehicle
does not maintain cruise set speed while
climbing. To balance travel time while saving
fuel, the vehicle predictively accelerate before
starting the climb, then may slow down as it
approaches the crest of the hill. In this
scenario the speed is allowed to fall below the
cruise control underspeed.
•
Crest Coasting — reduces speed before
cresting a hill
•
Dip Coasting — increases speed before a dip
•
Predictive Shifting — selects a gear shifting
strategy for upcoming terrain
•
Load Balancing — maintains most efficient
power for near zero road grades; small
fluctuation in road speed may be seen from
cruise set speed by ±1 or 2 mph
•
Predictive Adaptive Cruise Control — if
equipped with adaptive cruise control (ACC),
allows IPM to increase following distance
IMPORTANT: IPM behavior is different from that of
conventional cruise control. The system incorporates
features to improve the overall driver experience.
Some key points to remember are:
•
IPM is active only when cruise control is
engaged.
•
IPM only controls speed within the upper and
lower bounds of the cruise set speed. The
upper and lower set limits may be exceeded
up to 2 mph (3 km/h) for a limited time during
dip coasts, as IPM predicts the terrain
demands for the most fuel-efficient
performance. The driver is responsible for
setting a speed appropriate for the conditions
and grade. If equipped, IPM upper and lower
bounds can be adjusted by selecting the quick
access button on the steering wheel.
•
IPM can engage eCoast sooner, later, or not at
all compared to conventional cruise control.