Daimler Freightliner Cascadia 2021, Руководство пользователя

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If creep is active and no acceleration is achieved,
then Creep mode will abort. A display message noti-
fies the operator when Creep mode is about to be
aborted.
IMPORTANT: When slowing down from higher
speeds in drive or reverse, remember that
Creep mode will be in effect at lower speeds.
Use the service brakes to stop the vehicle.
To turn Creep Mode on or off, navigate to the trans-
mission settings screen (if available). See
Fig. 17.5 .
NOTE: Creep mode availability and the On/Off
screen are customer-selectable parameters. To
enable or disable creep mode, see an autho-
rized Freightliner service facility.
Hill Start Aid (HSA)
Detroit transmissions are equipped with a Hill Start
Aid (HSA) feature to prevent rolling backward when
launching the vehicle on an uphill grade. The system
delays the release of service brakes until enough
torque is available to begin moving the vehicle for-
ward. The system will hold the brakes for a maxi-
mum of 3 seconds. If driveline torque is not detected,
the system will audibly alert the driver and release
the brakes.
Clutch Abuse Protection
A vehicle equipped with a Detroit transmission does
not have a clutch pedal, but still has a clutch that is
operated automatically and can be damaged by abu-
sive driver actions. To protect the clutch, the vehicle
has a clutch abuse protection system that alerts the
driver and restricts functionality when needed. Ex-
tended periods in Creep Mode, slipping the clutch
(using the accelerator pedal to hold the vehicle on a
hill, for example), and high clutch temperatures can
activate the clutch abuse protection system. A display
message notifies the operator when the protections
are needed.
NOTICE
To hold the vehicle stationary on an uphill slope,
use the service brakes, not the accelerator pedal.
Using the accelerator pedal can overheat and
damage the clutch. To start moving, use the ac-
celerator pedal and release the brakes as the ve-
hicle begins to move.
There are three clutch abuse protection levels. At
each, the driver is alerted and functionality is modi-
fied; see
Table 17.2 .
To avoid clutch overheating, follow these tips:
•
To hold the vehicle stationary on an uphill
slope, use the service brakes, not the accel-
erator pedal.
•
To start moving on an uphill slope, use the ac-
celerator pedal and release the brakes as the
vehicle begins to move.
•
When hooking up to a trailer, ensure the trailer
is high enough to back under, and use first
gear reverse.
•
Avoid starting in higher gears, and start in first
gear when a trailer is attached.
•
Ensure trailer brakes have had time to com-
pletely release prior to starting.
•
Do not use Creep mode for an extended pe-
riod. Stop or adjust the vehicle speed when
warned to deactivate Creep mode.
Engine Overspeed Alerts
To help protect the engine, the system has display
messages to notify the operator when the engine has
exceeded certain thresholds and needs to be slowed
down before significant engine damage occurs.
There are two warnings, one at about 2300 rpm and
another at 2500 rpm, indicated with messages and a
fault code.
Descent Control Mode
Descent Control mode helps control the vehicle and
engine speed when descending a grade.
NOTE: Before engaging Descent Control mode,
determine an appropriate speed for the vehicle
load and grade of the road.
To activate Descent Control mode, manually set the
engine brakes with the shifter stalk and, while the
engine brakes are actively working, set cruise to the
desired descent speed. A Descent Control mode en-
gaged icon will appear on the ICUC screen showing
it is active. See
Fig. 17.6
The Descent Control mode will attempt to manage
the vehicle’s speed by varying the engine brake
level.
The driver should be ready to intervene by applying
the service brakes if the grade is too steep and the
Automated and Automatic Transmissions
17.5