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Mercedes‑Benz Trucks is raising its key engine series to a new level with the third generation of the OM 471 for Actros and Arocs. Even more dynamic, even cleaner, up to 4% more economical, with tailor-made turbochargers and new automatic transmission system – we introduce you the most important innovations here.
In the new engine, optimisations in the piston geometry, injection nozzle and other parameters increase the peak ignition pressure to 250 bar. The result is – together with other measures – a reduction in fuel consumption of up to 4%.
The consumption-optimised variant is predestined for long-haul transport and engines with an output of up to 350 kW. The second, performance-optimised variant is available for engines up to 390 kW – designed for heavy-duty and construction vehicles, where the high engine braking power also pays off. These engines also benefit from the fuel-saving measures within the engine of this model series.
The completely redesigned exhaust aftertreatment system optimises the nitrogen oxide balance with a whole range of measures. The lower consumption is also directly reflected in lower emissions. The new OM 471 is therefore fit for the strictest emission standards – for example, EURO VIe.
The new PowerShift Advanced transmission shifts more precisely and therefore more comfortably. Faster gear changes reduce torque interruption. The effect: softer moving off, faster acceleration and less loss of speed when shifting down on hills.
A newly developed engine oil pressure valve controls the oil pressure according to the demands. Precisely adapted to this: a new engine oil with a lower viscosity at the same oil-change intervals. This reduces friction losses in the engine.
More torque: from seventh gear, 200 Nm more are now available in the "A Standard" and "A Power" driving modes – the 330 kW and 350 kW engines and the G281 transmission in the Actros benefit from this. "Power at the push of a button" in other words, valuable when driving onto a motorway or overtaking, for example.
The third generation of the OM 471 is part of a new drivetrain package, which was also tested last year as part of an Actros driving event.
Photos: Daimler Truck AG