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Danfoss trials new hydraulic system on three Volvo excavators

An excavator is about to collect dirt from a hill
A Volvo CE EC200 excavator equipped with the Danfoss Dextreme excavator system Danfoss

Danfoss Power Solutions has partnered with the Ashcourt Group to test the Danfoss Dextreme system in three Volvo excavators. Ashcourt, a building materials supplier based in East Yorkshire, England, expects the system to increase the productivity of its machines while reducing fuel consumption.

The excavators were fitted with the Dextreme Swap system in collaboration with U.K. Volvo dealership SMT. The system replaces the excavator's main hydraulic pump with a digital displacement pump, custom software, and controller. Dextreme Swap is the simplest configuration of the Dextreme system and is predicted to lower fuel consumption by 15 percent. The pathway consists of three levels: Swap, Flex, and Max.

Ashcourt is thoroughly testing the system on three 20-ton diesel-powered Volvo EC200 excavators. Two of the machines will be used at the company's Partridge Hall Quarry in East Yorkshire. The third will operate at a nearby material washing facility. Each machine is forecast to complete 2,000 operating hours over the next 12 months. To compare operating data with Ashcourt's existing fleet of standard Volvo EC200 machines, each excavator has been fitted with data-logging equipment.

"Our goal is to see how the Danfoss Dextreme-equipped machines perform in terms of productivity and fuel use in a tough quarrying and material moving environment," says Ashcourt Group's Plant Director John Hood. "So far, the feedback from our operators has been uniformly positive. The fuel savings I can't speak to yet, but my team is telling me the new machines are very responsive and strong, with the EC200 performing more like an EC250."

A study by Danfoss Power Solutions revealed that excavators account for 50 percent of all carbon dioxide emissions generated by construction machinery. Around 90 percent of those emissions come from excavators of 10 tons or more, which is why the Dextreme system solution is specifically targeted at the excavator market. 

The Dextreme system can be integrated into diesel, hybrid, and fully electric excavators and will work with any machine control system. Its digital pump controller provides extensive data, providing fleet operators with real-time performance monitoring and diagnostics. 

"Today's excavator systems are only 30 percent efficient, with around 70 percent of the engine's energy wasted as heat in the hydraulic system," says Leif Bruhn, head of digital displacement at Danfoss Power Solutions. "We've designed the Dextreme system to radically reduce hydraulic system losses, leading to increased productivity and lower fuel consumption. We are excited to be working with the Ashcourt Group in such a challenging environment to demonstrate that Dextreme-equipped excavators deliver more productivity while consuming less fuel."

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304 Volvo Way
Shippensburg, PA
US, 17257


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2800 East 13th Street
Ames, IA
US, 50010


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