PREVOST H 2018 Series, Operator'S Manual

Page: 139 / 258

OTHER FEATURES 5-25
PA1628 H3-41, H3-45 Operator’s Manual
WARNING
When descending significant grades, use
the service brake as little as possible. If the
engine does not slow the vehicle to a safe
speed, apply service brake and shift to a
lower range. Let the engine (and engine
brake) slow the vehicle. Keep brakes cool
and ready for emergency stopping.
VOLVO ENGINE BRAKE (VEB)
On vehicles equipped with the Volvo Engine
Brake (VEB), the engine brake mode is by
default, set to the AUTO mode
at vehicle
start-up.
When running in AUTO mode, the engine
brake is gradually applied to 100% of the braking
power when the driver
pushes the brake pedal .
Since AUTO mode will not reduce vehicle
momentum unless the brakes are applied, it will
have no impact on fuel consumption.
The driver can also choose two other modes
using the steering wheel switches; Engine brake
LOW
and engine brake HIGH .
When set to the engine brake LOW mode,
50% of the engine brake power will be applied
when the driver
releases the accelerator pedal .
Using engine brake HIGH will apply 100% of
the braking power.
It must be noted that since engine brake LOW
and engine brake HIGH will reduce vehicle
speed upon release of the throttle pedal, they
may negatively impact fuel consumption if used
for extended periods of time.
On vehicles equipped with an engine brake
switch, it is possible to deactivate the engine
brake (OFF mode). To do so, the driver must
press the engine brake switch located on the left
side of the dashboard.
Engine Brake Switch
NOTE
When using engine brake LOW or HIGH
mode, pressing the steering switch OFF
button will switch back to the default AUTO
mode.
DRIVER PEDALS ENGINE BRAKE
MODE
ENGINE BRAKE
FORCE
ANY
POSITION
0%
ACCELERATOR
PEDAL RELEASED
0%
BRAKE PEDAL
PUSHED
100%
ACCELERATOR
PEDAL RELEASED
50%
100%
ENGINE BRAKE FORCE APPLIED ACCORDING TO SELECTED
MODE AND DRIVER PEDAL POSITION