What is NRMM?
NRMM (Non-Road Mobile Machinery) is a diverse group defined as any mobile machinery used for purposes other than the transportation of passengers or goods. This includes larger machinery such as mobile cranes, dumpers, construction machinery, and water vessels, as well as smaller machinery such as compressors, lawnmowers, and chainsaws.
Agricultural and forestry vehicles are not directly classified as NRMM according to Regulation EU 2016/1628 and are therefore not directly subject to Stage V standards. However, the same rules apply indirectly, as Regulation 167/2013 on the approval of agricultural and forestry vehicles stipulates that emission standards apply to these vehicles as well.
Impact on NRMM
Tighter limits on particulate mass (PM) and the new particle number (PN) limit for engines between 19 kW and 560 kW are expected to require common rail fuel systems and exhaust aftertreatment devices, such as diesel particulate filters (DPF), on all diesel combustion engines above 19 kW. Depending on the engine power, additional exhaust aftertreatment technologies such as Diesel Oxidation Catalyst (DOC), Selective Catalytic Reduction (SCR), and Ammonia Slip Catalyst (ASC) are also likely necessary to comply with Stage V standards.
The new regulations have a significant impact on engines in the 19 kW to 37 kW range, which previously remained at Stage IIIA levels and could be compliant without common rail fuel systems and exhaust aftertreatment. Engines between 37 kW and 56 kW, which were previously under Stage IIIB/IV standards, are also highly affected, as they could be compliant without advanced aftertreatment prior to Stage V.
