Allison Transmission 3000 MH Series, Руководство оператора

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Types of Retarder Control
Type Description Amount of Application
Manual Separate apply
pedal Zero to Full apply
Hand lever * Six levels based on lever position
Automatic Auto “Full On” * “Full On” when closed throttle sensed
Brake Pressure
Apply** Single pressure
switch Off or “Full On” (based on brake
pressure)
Three pressure
switches
1
/
3
,
2
/
3
, or “Full On” (based on brake
pressure)
Pedal Position ** Special brake
pedal
1
/
3
,
2
/
3
, or “Full On” (based on pedal
position)
J1939 Data Link Digital message
from engine
controller Zero to Full Apply
Combinations of
the above
systems ** Auto “half-on”
plus pressure
switch * Half capacity at closed throttle or
“Full On” with brake pressure
Auto “
1
/
3
on” plus
two pressure
switches *
1
/
3
, capacity at closed throttle or
2
/
3
and “Full On” with brake pressure
Hand lever plus
pressure switch * 6 levels of modulation with lever, or
“Full On” with brake pressure
Foot pedal plus
pressure switch Full modulation with separate pedal,
or “Full On” with brake pressure
Hand lever plus
interface for
special pedal * 6 levels of modulation with lever, or 3
levels of modulation based on pedal
position
* These control systems may apply the retarder at high speed on grades when
the vehicle has road speed limiting and the retarder is enabled.
** For retarder apply systems integrated with the service brake system, the
retarder is most effective when applied with light brake pedal pressure for
1–2 seconds to allow the retarder to fully charge. Added pedal pressure can
be applied when more aggressive braking is desired.
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