Danfoss plans to combine electrification with its Digital Displacement technology to significantly improve machine efficiency. Reducing energy consumption by as much as 50%, the technology can dramatically decrease the size of batteries needed to power the machines and the amount of energy needed to charge them.
Danfoss is already constructing a £25 million state-of-the-art manufacturing, research, and development facility in Edinburgh to commercialise its Digital Displacement technology and Editron electric drivetrains for the construction machinery sector. Dubbed the Decarbonization Hub, the facility will become operational next year.
Niall Caldwell, senior director of R&D, digital displacement, Danfoss Power Solutions, said: “Electrifying construction equipment is not straightforward. For a large excavator, the daily power consumption is so high, the batteries required are the equivalent to as many as 10 typical electric car batteries, which could cost as much as the machine itself. The key, we believe, is efficiency.”
Danfoss research has shown that as much as 70% of an excavator’s energy is wasted in the hydraulic system between the engine and the working functions. Significantly reducing this energy loss enables future machines to use much smaller, and therefore cheaper, batteries.
Danfoss’ computer-controlled ‘Digital Displacement’ technology is said to significantly improve system efficiency and reduce energy use.
A paper Danfoss submitted to the International Fluid Power Conference (IFK), one of the world’s largest scientific conferences on fluid power, shows that Digital Displacement technology can already deliver a 24.8% lower capacity battery to complete eight hours of typical operation.
“This new grant will accelerate technological developments to reach 50% improvement,” said Leif Bruhn, head of Digital Displacement, Danfoss Power Solutions. “Our goal is to make electric off-highway machines cheaper to own and run than diesel equivalents. This program will allow us to prove that combining better efficiency alongside electrification is the most effective way to bring down cost, improve performance, and hasten the adoption of electric off-highway machines worldwide, which is what we all want to achieve.”
The UK Department for Business Energy and Skills awarded the grant through its Red Diesel Replacement competition, which seeks to accelerate the transition to electric off-road vehicles such as excavators and wheel loaders.