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Engines
Arocs

Engines

Which you will need every day for extreme operations in construction haulage.

The powerful, robust Arocs engines incorporate advanced, efficient Euro VI technology. Above all, they deliver precisely the power you need for the tough jobs in construction transport and the Mercedes PowerShift 3 automated gearshift boasts high driving comfort, precise gear selection, efficient power transmission and enhanced handling.

The particularly long-lived 6-cylinder in-line engines of the Arocs fully cover all performance requirements in construction transport. For optimum job matching, the fuel-efficient Euro VI engines are available in the four displacement classes 7.7 l, 10.7 l, 12.8 l and 15.6 l.

The range of power outputs for the Arocs engines starts at 175 kW (238 hp) with peak torque of 1000 Nm, and culminates 18 levels higher up in the top-of-the-line engine, which produces 460 kW (625 hp) of power and impressive peak torque of 3000 Nm, providing the most powerful and potent answer to all requirements in construction transport.

Advantages at a glance.

  • Robust, high-torque, fuel efficient 6-cylinder in-line engines in four displacement classes spanning 18 output levels from 175 kW (238 hp) to 460 kW (625 hp)
  • Four displacement classes covering a total of 18 output levels, from 175 kW (238 hp) to 460 kW (625 hp)
  • Spontaneous power delivery resulting from high torque even in the low rev range
  • Broad torque range reduces number of shift operations and saves wear on clutch and transmission
  • Uprated engine brake for high level of safety
  • High Performance Engine Brake97 offering up to 475 kW40 of brake power

All Arocs engines are low on fuel consumption and emissions. This does not preclude high power and spontaneous power delivery, however. On the contrary – the engine characteristics develop a high level of power and deliver this power as early as possible. Higher levels of torque are already on tap in the low rev range, making it easier to move off under heavy loads.

The engines of the Arocs get more power from the fuel. This is thanks, in part, to the further advanced engine management system and to the innovative common-rail injection system with the X-Pulse pressure booster, which injects the fuel into the combustion chamber at up to 2100 bar injection pressure. The result: a particularly homogeneous fuel-air mix and efficient, low-emission combustion. And consequently more power with particularly low fuel consumption at the same time.

The 2nd generation of the OM 471 supplies higher torque in a lower rev range in comparison to its predecessor. This means more power is available earlier, accompanied by reduced fuel consumption.

The three-stage brake system offering up to 230 kW40 of brake power reduces wear on the service brake while enhancing safety and control of the vehicle.
 

The three-stage, wear-free auxiliary brake offering up to 475 kW of brake power is optionally available for even greater safety. The three-stage brake system reduces wear on the service brake while enhancing safety and control of the vehicle.

The three-stage, wear-free engine brake can be activated via the steering-column lever on the overrun when the engine speed is greater than 1000 rpm and the ABS is not in action. In stage 1, the engine brake decompresses cylinders 1 to 3, in stage 2 cylinders 1 to 6 and in stage 3 cylinders 1 to 6 as well as the EGR valve control.

The inclination sensor is an asset in tailoring the truck to its given tasks. This sensor identifies gradients and prevents upshifting. The broad torque range enables gears to be held for longer in off-road terrain. That reduces the numbers of gear changes, thereby taking some of the load off the clutch and transmission.