Under the hood
Packed inside the hood of the Fendt Vario 722 is a powerhouse that provides up to 130 kW throughout the machine. Engineers are studying every component of a tractor, from the compressor to the fan, to see where an electric motor could take the place of current systems that rely on direct transmission from the engine (belts and pulleys).
An integrated current generator is tucked behind the engine. Power electronics and a specially designed cooler unit are all powered by the generator. One key component in the design process is to find electrical drive systems and a generator that can fit within the tight confines under the tractor hood. Engineers note that since the start of the project, systems have evolved to become more compact and more powerful.
An electrically driven fan keeps the tractor’s systems cool even during the most demanding workloads. Since the fan is electric and independent from the tractor’s drive system, it can operate at the proper speed, regardless of the RPMs coming from the engine. This provides for more precise cooling. The electric motor can provide a longer service life, and has been modified to cool fluids within the unit. And if it needs to be replaced, it can be done so much more easily compared to a belted fan.
A specially designed electric connector delivers up to 130 kW to the electrical systems of trailing implements. Because this is a prototype, engineers also had to develop specific plugs that were functional, and rugged enough for the demands of agricultural producers. Fendt is working with the industry to develop specific guidelines for these fittings to make the systems universial.
It’s not a sign you see every day on a tractor. This indicates this is a high-voltage system.
This is a prototype spreader from Amazone. The companies worked together to develop electric systems that could take the place of traditional PTO or hydraulic drives. Why electric drives? In a nutshell, electric units are more efficient and more precise. With an electric motor, the speed of the spreader can be adjusted independent of PTO speed.