London, 26 October 2023, (Oilandgaspress) – BMW Group Logistik, in collaboration with the technology innovator Trailer Dynamics, has successfully tested an electrically powered semi-trailer on various tracks and over varying distances in real-world logistics operations. With the diesel truck used, average fuel savings of more than 46 percent over short and medium distances, and more than 48 percent over long distances, were attained. Using a combination of electric tractor and e-trailer, a range of more than 600 kilometres without recharging was achieved. There were four days of pilot tests over short and medium distances around the BMW Group location at Dingolfing, and three days of testing over long distances between Mamming in Lower Bavaria and the BMW Group plant in Leipzig.
The capabilities of Trailer Dynamics’ e-trailer were put to the test to identify the best application scenarios for BMW Group Logistik. Unlike a conventional semi-trailer, the e-trailer from Trailer Dynamics of Eschweiler near Aachen is fitted with its own battery and electric drive axle. This axle supports the semi-trailer truck’s engine. Integrated sensors on the kingpin between the tractor and the trailer ensure an optimum load ratio and thus the best-possible fuel economy. As well as reducing the tractor’s energy consumption, the e-trailer’s powered axle also provides additional power during start-up and on slopes. In combination with a diesel truck, security of supply is also ensured even if the battery of the e‑trailer is empty.
The tests over a medium distance took place over four consecutive days on real logistics routes around the BMW Group location of Dingolfing. The round trip transportations with demanding route topographies were carried out with the logistics service provider Gahr International. Up to 250 kilometres were covered per day on motorways and main roads, with automated and simultaneous data collection from the e-trailer and tractor being performed for the first time. That showed an average reduction in diesel consumption of 46.59 percent.
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