At the end of 2024, the last of a total of 500 new Mercedes-Benz Actros trucks were handed over to the Finéjas Group at a ceremony in Wörth. The Mercedes-Benz Actros 1845 LS 4×2 trucks ordered are equipped with the latest generation of the OM 471 diesel engine with 330 kW (449 hp), MirrorCam, Multimedia Cockpit Interactive and the latest safety assistance systems: Active Brake Assist 6, Active Sideguard Assist 2 and Frontguard Assist.
The third generation of the OM 471, introduced in 2022, offers improvements in efficiency as the result of a number of engine innovations. For example, the geometry of the piston recess, the injection nozzle design and the parameters of the cylinder head relevant for gas exchange were subject to an extensive optimization process. In this way, the compression ratio of the six-cylinder in-line engine has been increased from 18.3:1 to 20.3:1, this leads to more efficient combustion with a peak ignition pressure of 250 bar.
One of the most important levers in increasing fuel efficiency in modern diesel combustion engines is turbocharging optimization. With the third generation of the OM 471, Mercedes-Benz Trucks introduced two new turbochargers developed and manufactured in-house which are precisely adapted to the broad range of customer requirements. In the consumption-optimized variant, the focus is on the lowest possible fuel consumption—it is predestined for use in long-distance haulage with an engine rated at up to 350 kW (476 hp).
The second turbocharger variant is designed for high performance and a high engine braking force and is ideal for use in the heavy-duty- and construction sector with an engine rating of up to 390 kW (530 hp). For the lower and medium performance levels of the OM 471, the maximum fuel saving compared with the previous generation is up to 4% percent, and for the upper performance levels up to 3.5%.
In addition to combustion and turbocharging, friction reduction is the third important lever for improving fuel efficiency. For this purpose, the third-generation OM 471 has a newly developed engine oil pressure control valve. It is installed behind the engine oil pump and in front of the oil thermostat. An electrical actuator enables characteristics map-controlled use of the pressure-reducing valve. Available reductions in engine oil pressure are determined in a complex matrix that takes into account all engine components and their specific requirements, such as lubrication or cooling. A newly-developed engine oil with low viscosity enhances oil pressure control—it improves fuel efficiency without reducing oil change intervals or increasing the wear on affected engine components.
The exhaust gas aftertreatment system, which was completely revamped and adapted to the new combustion and control system of the OM 471, also helps improve fuel efficiency. The system limits the counterpressure and also increases the uniformity index of the AdBlue, which leads to improved NOx conversion and lower fuel consumption. The NOx sensors together with the closed and adaptive NOx closed-loop control circuit and a predictive SCR temperature model have enabled emission stability to be improved even further. It is even compliant with the strictest emission standards, such as Euro VIe, which call for effective limitation of exhaust gas emissions over the entire normal service life of a vehicle under normal usage conditions.
The Finéjas Group is an international transportation company based in Lithuania. Founded in 1994, the company now employs more than 3,000 people and has a fleet of 1,500 trucks. The company specializes in the transport of non-hazardous and non-temperature-sensitive goods in curtain-sided trailers (FTL transports, “Full Truck Load”) within Europe. The Finéjas Group relies on a homogeneous fleet for the Europe-wide transportation of full truck loads.
Source from Green Car Congress
Disclaimer: The information set forth above is provided by greencarcongress.com independently of Alibaba.com. Alibaba.com makes no representation and warranties as to the quality and reliability of the seller and products. Alibaba.com expressly disclaims any liability for breaches pertaining to the copyright of content.
