New Wirtgen W 220 XFi cold milling machine with various sustainability features 

The new Wirtgen W 220 XFi cold milling machine is designed for sustainability and productivity. It offers low specific carbon emissions and high milling performance in all applications, from surface layer rehabilitation to complete asphalt removal. Plus, in automatic mode, the Mill Assist system selects the operating strategy with the most favourable balance between milling performance and operating costs.

The Multiple Cutting System (MCS) for milling widths between 2.20 m and 3.80 m makes it easy to quickly switch milling drums and milling drum assemblies. The W 220 XFi meets the EU Stage 5 / US Tier 4 Final exhaust emission standards without requiring DEF (diesel exhaust fluid / AdBlue).

This large milling machine from the ‘Xtended F-Series’ with a standard working width of 2.20 m comes equipped with an 18-l John Deere JD18L engine, which provides a maximum power of 627 kW even at engine speeds of only 1,500 rpm. The engine has been specially designed to meet the requirements of cold milling, delivering high torque under all load conditions.

Thanks to the Dual-Shift transmission, the high torque can be used at low rpm for optimal milling performance. Even at low engine speeds, high milling drum rotation speeds are possible.

Greater milling efficiency

The Mill Assist machine control system increases milling performance while simultaneously reducing diesel and water consumption as well as pick wear. This function controls engine speed automatically according to the needs of the operator.

The extensive operating speed range combined with the Dual-Shift powershift transmission facilitates a wide range of applications. At lower speed ranges, fuel consumption, noise emissions, and pick wear can be reduced significantly. At the upper speed range, an optimum milling pattern can be attained even over large areas.

The operator can also select one of three operating strategies: ‘Eco’, ‘performance-optimised’, or ‘milling pattern quality’. With the latter, for example, it is possible to pre-define the required milling pattern quality incrementally, from coarse to very fine, at the press of a button.

The Mill Assist and the Wirtgen Group Performance Tracker Milling (WPT Milling) assist operating personnel and increase milling efficiency. These systems are already used in other F-Series cold milling machines. With the W 220 XFi, the two systems have been further developed to include a CO2 emissions display. Both the current emissions and the specific carbon emissions in relation to milling mass can be easily viewed on the control screen.

The automatically-generated WPT report can also include the CO2 emissions of the entire project in addition to other construction-relevant data – an expansion of the data foundation used in jobsite analysis and documentation. Different construction projects can now be compared in terms of carbon emissions, allowing conclusions to be drawn for optimising the next project.