On a long leash In contrast to the passenger car market electrification is still playing a minor role in the farming machine sector The main reason is that the high level of capacity utilization there entails the need for a large onboard energy storage require ment that current battery systems can not cover John Deere has presented an approach to solving this problem in a project called GridCon in which auton omous tractors are supplied with elec tric power by a cable with a length of up to three kilometers 1 9 miles attached to them This by the way is an idea that was used in the USSR see below as ear ly as in the 1950s but did not catch on Powerhouse Model Krone BiG X 1180 Category Forage harvester Field of application The currently most powerful farming machine delivering 1 156 hp is used in grass and corn harvesting With a fresh weight throughput of 400 metric tons hour 440 short tons the Krone is extremely powerful and thanks to its PowerSplit function features adjustable engine characteris tics so that the 24 liter engine always runs in the optimal rpm range and therefore more efficiently Technology Numerous assistance systems ensure optimal harvesting a steering system for automatic lane keeping photo optical cells for capturing the ripe ness level of the plants and automatic adjustment of the chopping length depending on the type and amount of harvested mass to be collected Fully automatic speed adjustment to reduce diesel fuel consumption and easing the burden on the driver automatic online calibration of yield data acquisi tion is a first in terms of eliminating the need for vehicle scales 82

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