Arocs: Transmission, gearshift - Mercedes-Benz Trucks

Uses the power better automatically. Mercedes PowerShift 3

The Arocs comes to the construction site equipped with the advanced Mercedes PowerShift 3 automated gearshift. In short, this means a high level of driving comfort, precise gear selection, efficient power transfer and better handling.

Superior dynamic response, simple handling and low fuel consumption. The automated transmission ensures precise gear selection, short shift times, high driving comfort and a very high level of economic efficiency. Mercedes PowerShift is very simple to operate via the right-hand steering-column lever. Shift times are up to 20% shorter than with Mercedes PowerShift 2 and up to as much as 50% shorter than with Telligent® automated gearshift. The Mercedes PowerShift 3 applies sensitive sensor technology for gearshifting to ensure gear selection in accordance with the given driving and load situation. Overrun mode on a downhill gradient is identified and the gear is held. The crawl function with integral manoeuvring mode makes moving off easy and manoeuvring precise and responsive. Furthermore, there are various transmission modes and additional functions to make driving in construction transport easier.

Additional functions.

With Mercedes PowerShift 3, additional functions such as direct shifting from 1 to R and reverse gears with high ratios provide for simple manoeuvring. The crawl function makes particularly easy work of moving off.

Advantages at a glance.

Mercedes PowerShift 3 automated gearshift with six application specific transmission variants, with 8, 12 and 16 gears
Convenient operation via the right-hand steering-column stalk
Shorter shift times, better performance both off- and on-road
Detection of overrun mode on downhill gradients
Driving programs matched to the task as well as driving modes and additional functions
Crawl function with integrated manoeuvring mode for simple moving off and precise manoeuvring
Rock-free mode
Fast reversing
Two individually selectable driving programs – “offroad” or “power” – for all applications
Turbo Retarder Clutch for extreme operations
Optional manual double H gearshift with pneumatic shifting assistance for one 9- or three 16-speed transmissions⁴⁰

Transmissions

Transmissions for every application.

The transmission performs fast gear changing. The generous installation space means that it is also possible to use wide gearwheels. This enables high levels of torque to be transferred.

Rock-free mode.

Rock-free mode is activated at the push of a button. Pressing and releasing the accelerator pedal in quick succession induces a rocking motion in the vehicle.
A vehicle stuck in boggy ground can free itself in this way.

Arocs driving programs¹⁰⁸.

Content transmission 03 — The instrument cluster always shows what driving mode is currently engaged and which gear of the Mercedes PowerShift 3 automated gearshift has been selected. This is particularly useful when you manually intervene in the gear selection process.

Depending on the intended application, the "offroad" or "economy/power" drive programs are available. All the drive programs feature various driving modes to master individual driving situations in an appropriate and confident manner¹⁰⁸.

Driving program “offroad”.

Offroad drive mode offers the driving setups Standard, Economy, Offroad and Manual and is optimised for the special requirements of construction-site traffic. It supports economic driving styles just as much as improved handling when pulling away or manoeuvring on building sites or when driving slowly along bad roads.

Driving program "power".

This comprises the driving modes "power", "standard" and "manual". "power" is designed for on-road use and supports driving with an onus on power as necessary.

Turbo Retarder Clutch.

The wear-free Turbo Retarder Clutch combines the functions of a hydrodynamic start-up clutch and a primary retarder in a single component.
The engine-speed retarder supplies up to 720 kW of brake power directly from low speeds, is finely controllable via five levels on the steering-column lever and reduces brake wear. Designed for extreme loads, it is precisely matched to Mercedes PowerShift 3 and the electronic engine management system. This contributes to a high level of driving comfort and reduces fuel consumption in comparison to conventional torque converter solutions.

Content transmission 04 — The optionally available Turbo Retarder Clutch guarantees precise and wear-free moving-off and manoeuvring with maximum traction and high braking torque, even at low vehicle speeds.

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Arocs

Transmission, gearshift

A tangible dynamic response, simple handling and low fuel consumption.