Unimog with AutomaticShift®. Setting new standards of operating

Unimog with AutomaticShift®. Setting new standards of operating
New feature: Driving and working without operating the clutch.
Unimog with
AutomaticShift.
Setting new standards
of operating comfort.
http://www.mercedes-benz.com/unimog
®
DaimlerChrysler AG
Product Unit Unimog/ Speciality Vehicles, D-76742 Wörth. 6703-0917-00 - 00/0903.
Printed in Federal Republic of Germany. Imprimé en République fédérale d’Allemagne.
With AutomaticShift®
Automatic
shifting.
Without AutomaticShift®
Driving and working without operating the clutch –
just like driving an automatic transmission. AutomaticShift®
significantly contributes to relieving you during transport and
working applications. Thus, you can concentrate on the working
processes and the traffic situations even more effectively.
You can choose freely between automatic and manual
shifting, just by pressing the button. M means manual gear
change. With A, gears are changed automatically. For both modes,
you do not need to operate the clutch.
AutomaticShift® is available for less than 3.000,- EUR for
the Unimog Implement Carriers U 400 and U 500 as well as for the
High-Mobility Vehicles U 3000/U 4000/U 5000. The Unimog is
herewith not only an innovative step ahead of its competition
but also a step ahead with respect to the price-performance ratio!
Basic functions.
AutomaticShift®
AutomaticShift® means Electronic Automated Shifting. This
special feature automates all gear shifting: operating a clutch pedal is
not necessary, and gears are chosen automatically. Unlike automatic
transmission, AutomaticShift® does not need a torque converter. The
Unimog’s drivetrain is just supplemented by electronic and mechanical components. Compared to the classical transmission, weight can be
reduced significantly. The Unimog’s payload remains the same.
With AutomaticShift®, you can choose freely between automatic
and manual shifting. For both modes, you need not to operate the clutch.
Just press the button. If you choose the “A” mode, gear shifting will be
automatic. This allows you to always drive in the most optimal gear.
Additionally, it means a lot of stress relief for the driver and a lower
fuel consumption.
If you press the “M“ button, gear shifting will be manual: Preselect the gear via the gearshift lever manually, clutch activation and
gear changing will follow automatically. This mode is advantageous when
driving off-road or during implement operation.
For both modes, you can use the engageable clutch pedal, if
necessary, which allows you to change into the classical electronic pneumatic shifting.
Clutch wear is reduced to a great degree. Due to the automatic
engine speed regulation and engine torque adjustment when changing
a gear, clutch slip is reduced to a minimum.
Safe working at constant engine speed: Gears are only shifted if
you decide to do so. With the engine speed regulation, front PTO engaged and/or working and crawler gears, only the “M” mode is activated.
Conclusion: You can always take advantage of AutomaticShift®
– when working with implements, while driving on roads and during
off-road operations.
Unimog without AutomaticShift®
Unimog with AutomaticShift®
Clutch slip
Clutch slip
2500
2500
2000
2000
1500
1500
1000
1000
500
Electronic idle
speed adjustment
500
disengaged
engaged
Clutch
➛ Increased clutch wear
disengaged
engaged
Clutch
➛ Very little clutch wear
Driving operation.
Starting
Start engine, transmission is in “Neutral“ position. Depress hand
and/or foot brake. Pre-select the driving direction (forward/reverse) by
shifting the gear lever up or down. When starting for the first time the
second gear is automatically selected. Subsequently, due to shifting up
or down, you can also start with the third or first gear. You start by
depressing the accelerator pedal. Depending on how you depress the
accelerator pedal, the clutch will react accordingly: If you strongly
depress the pedal, you will drive off dynamically. If you depress it
carefully, you will drive off smoothly.
Driving/Gear changing
Pre-select the desired mode on the “A/M” mode switch. Keep on
driving with the acceleration pedal depressed. When driving in automatic mode, the gears are shifted according to the respective driving conditions (slope, vehicle weight, torque etc.). You can also shift gears manually at any time (press “M” switch mode and appropriately operate the
gearshift lever). AutomaticShift® facilitates driving in any situation,
e.g. when driving with or without implement attachment and during
trailer operation, allowing for a highly increased operating comfort.
Manoeuvring
Recommendation: mode “M”. Depress the acceleration pedal
carefully - the clutch will be activated after 10% of pedal travel has been
reached. In combination with Electronic Quick Reverse EQR (standard
equipment), the comfort of shifting up and down in a short period of
time will even be improved, a feature which is appreciated during winter service, e.g. snow clearing on crossings. This allows you to work efficiently, and traffic will flow smoothly again.
Implement operation.
Mowing
When mowing, drive at “M” mode, pre-select the desired gear and
adjust the necessary engine speed via ADR mode (engine speed regulation). Despite a constant engine speed, you can shift into another gear at
any time – due to AutomaticShift®, without operating the clutch.
Cleaning
Fast reversing while using the brakes and foot throttle (when EQR
is activated) assists in immediate reaction times. Thus quicker and more
efficient working is possible, ie. when sweeping a construction site or
parking lots.
Winter service
During snow clearing operations on transit roads, the automatic
mode will be the appropriate one. When driving in narrow city conditions, the M mode will be more appropriate. If you clear crossings,
for instance, keep the M mode and additionally switch on EQR. Thus,
AutomaticShift® eases rough winter service operations. You can keep
calm and concentrate on the traffic situation perfectly.
Off-road operation
AutomaticShift® takes over shifting which allows you to completely concentrate on driving. If the driving situation is not that difficult,
the automatic mode will be the most appropriate. When driving in difficult off-road terrain, the “M” mode will be more advantageous by far:
When driving along downhill stretches or through mountainous regions,
unintended shifting no longer occurs. With AutomaticShift®, safe and
comfortable driving can also be guaranteed in off-road situations.
The advantages of AutomaticShift® - an overview.
1
AutomaticShift® automates the clutch activation when
starting the vehicle, changing gears, manoeuvring and
stopping.
2
AutomaticShift® will be available for less than 3.000 EUR.
Plus: A classical automatic transmission’s purchase price
will be a lot higher. So you can save money while having the
usual functional advantages of electronic pneumatic engine
management.
3
AutomaticShift® allows you to work steadily at constant
engine speed.
In case of changing operational conditions, e.g when mowing, shifting will be possible at any time – without operating
the clutch – even at constant engine speed.
4
AutomaticShift® reduces the operating costs.
Clutch wear is reduced to a technical minimum.
Electronic system shift into the most appropriate torque
range which allows for a lower fuel consumption.
5
Compared to classical automatic transmission,
AutomaticShift® saves approximately 200 kg in weight.
Unimog payload is not limited.
6
AutomaticShift® and EQR allow for rapid forward and
reverse shifting – without operating the clutch!
Due to the rapid forward/reverse shifting, you can work more
efficiently and more comfortably.
7
Off-road operation with more operational safety and
comfort.
With AutomaticShift®, you always drive with a released clutch.
Gears are only shifted in manual mode if you decide to do so.
“Rocking-free in off-road operation“ is always possible with
AutomaticShift® without any restriction.
No clutch operation, no shifting into the wrong gears – facilitating handling in any driving situation.
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