Mercedes-Benz unveils its first Urban eTruck

    Mercedes’ first fully electric truck has an admissible total weight of up to 26 tonnes.

    Published On Jul 30, 2016 06:00:00 AM

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    Mercedes-Benz has unveiled its first fully electric truck in Stuttgart and called the Mercedes-Benz Urban eTruck.

    With this launch, the German automaker foresees heavy trucks to take part in urban distribution operations with zero local emissions and hardly a whisper. The market launch of this technology is conceivable for Daimler Trucks at the beginning of the next decade. Daimler Trucks already has an electric presence in the light distribution sector since 2014 with customer trials of the Fuso Canter E-Cell. The company now sees development of electric trucks and series production maturity as fixed parts of its strategy.

    For this purpose, a considerable part of the future investments by the truck division in R&D will flow towards full electric drive. Wolfgang Bernhard, responsible for Daimler Trucks & Buses at the Board of Management commented, "Electric drive systems previously only saw extremely limited use in trucks. Nowadays costs, performance and charging times develop further so rapidly that now there is a trend reversal in the distribution sector: the time is ripe for the electric truck. In light distribution trucks, our Fuso Canter E-Cell has already been undergoing intensive customer trials since 2014. And with the Mercedes-Benz Urban eTruck, we are now electrifying the heavy distribution segment up to 26 tonnes. We intend to establish electric driving as systematically as autonomous and connected driving."

    Growing urbanisation requires fully electric trucks The UN predicts a global population of nine billion people by 2050, with approximately 70 percent of them living in cities. Daimler believes it will be necessary in the future to transport goods in urban environments for increasing numbers of people – and with the lowest possible emissions and noise. By now large cities such as London or Paris are considering a ban on internal combustion engines in city centres in the future.

    Until quite recently, the use of fully electric drives systems in trucks seemed to be unimaginable – especially because of the high costs of the batteries coupled with a low range. The technology has now become much more mature, in particular, battery cells rapidly developing further. Daimler Trucks expects the costs of batteries to lower by the factor 2.5 between 1997 and 2025 – from 500 Euro/kWh down to 200 Euro/kWh. At the same time, performance will improve by the same factor over the same period – from 80 Wh/kg up to 200 Wh/kg. Stefan Buchner, Head of Mercedes-Benz Trucks explains, "With the Mercedes-Benz Urban eTruck, we are underlining our intention to systematically developing the electric drive in trucks to series production maturity. This means that we will begin to integrate customers, so as to gain valuable joint experience with respect to the operating ranges and the charging infrastructure in daily transport operations. Because we think the entry of this technology into the series production is already conceivable at the beginning of the next decade."

    Technically, the Mercedes-Benz Urban eTruck is based on a heavy-duty, three-axle short-radius Mercedes-Benz distribution truck. In addition, however, the developers at Daimler Trucks have totally revised the drive concept: The entire conventional drivetrain being replaced by a new electrically driven rear axle with electric motors directly adjacent to the wheel hubs – derived from the electric rear axle which was developed for the Mercedes-Benz Citaro hybrid bus. The power is supplied by a battery pack consisting of three lithium-ion battery modules. This results in a range of up to 200km – enough for a typical daily delivery tour. Thanks to the integrated concept with motors adjacent to the wheel hubs, the batteries are housed in a crash-proof location inside the frame. As the EU Commission is in favour of increasing the permissible gross vehicle weight of trucks with alternative drives by up to one tonne, this will more or less level out the weight surplus of the electric drive. This will raise the permissible gross vehicle weight of the Urban eTruck from 25 to 26 tonnes, which will bring the original extra weight down to 700kg compared with a directly comparable IC-engined truck.

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