Daimler has developed an all electric heavy commercial vehicle. The Mercedes-Benz Urban eTruck has been designed for short-radius distribution and is based on a heavy-duty three-axle distribution truck.
Engineers have revised the drive concept, and the entire drivetrain has been replaced with an electrically driven rear axle with two electric motors directly adjacent to the wheel hubs. Their maximum output is 125kW each, while the peak torque is 500Nm each. In combination with the gearing, the torque at the wheel reaches 11,000Nm.
Power is supplied by a battery pack consisting of three modules of lithium-ion batteries with a total capacity of 212kWh. This results in a range of up to 200km. Depending on the desired range, the modular battery pack can be customised by adding or removing batteries. The Urban eTruck is connected to the charging station using the Europe-wide standardised Combined Charging System (CCS) Type 2 connector. With a charging power of 100kW, the fully discharged batteries are charged to 100% in two to three hours.
Daimler said: “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 cancel out the weight disadvantage of the electric drive. This will raise the permissible gross vehicle weight of the three-axle rigid truck from 25 to 26 tonnes, which will bring the original extra weight down to 700kg compared with a directly comparable IC-engined truck.”
Daimler’s head of truck product engineering and global procurement, Sven Ennerst explains the process and technology behind the firm’s approach to the truck’s development.
|tags:||Daimler Hybrids & EVs|