Real-world NOx-emissions from various non-road mobile machinery and vehicles: Measurement and monitoring results
report
On behalf of the Dutch Ministry of Infrastructure and Water Management, TNO conducted emission measurements to gain more insight into the real-world NOx emissions of various mobile machines and vehicles. In terms of emission regulations, the machines largely fall under the European Non-Road Mobile Machinery (NRMM) legislation, whereas the measured vehicles fall under the Euro standards. In this study, a total of 18 diesel-powered machines, engines, and vehicles were measured and evaluated, covering construction equipment, rail machinery, and road surface cleaners. The overarching goal of the program was to gain experience with options for emission monitoring of mobile machines during real-world usage. Publications on this topic were released in 2023 and 20243, 4. This report primarily focuses on the emission results. The variation in measured NOx emissions between machine categories is significant. This variation mainly depends on the engine power class, the emission class, the presence of an Selective Catalytic Reduction (SCR) system, the functioning of the SCR, and machine usage.
The measurement data show that machines with engines without an SCR system, older engines, and those with simpler emission reduction systems have considerably higher emissions than newer machines equipped with SCR.
The measurement data show that machines with engines without an SCR system, older engines, and those with simpler emission reduction systems have considerably higher emissions than newer machines equipped with SCR.
TNO Identifier
1006449
Publisher
TNO
Collation
64 p.
Place of publication
Den Haag