After the introduction of Real Driving Emission (RDE) tests for light- and heavy-duty vehicles, focus is now shifting to the area of Non-Road Mobile Machinery (NRMM). This includes the regulation of engines and - so-called Stage V engines - from any type of vehicle that is not used on the road (EU2016/1628), e.g. construction or agricultural machinery.
An important new development in Stage V is the so-called In-Service Monitoring (EU2017/655). This requires to temporarily test the exhaust gas emissions of a small number of engines under real service conditions, similar to the requirements already imposed on passenger cars and on-road trucks. The regulation currently applies for monitoring emissions of two engine categories: NRE-v-5 and NRE-v-6, covering power ranges from 56 to 130 kW and 130 to 560 kW.
Compared to the testing conditions for passenger cars or trucks, Portable emissions measurement systems (PEMS) equipment for NRMM can’t be set up in a trunk or on a payload area. The equipment needs to be installed outside of the vehicle, being exposed to more risks. To overcome this more challenging environment, HORIBA developed the OBS-ONE RE (rugged enclosure) which, will keep the PEMS safe from shock, vibration and other influences in this testing situation.
This housing design was particularly developed for the requirements of NRMM in-service monitoring and R&D work in tough environmental conditions.
MORE INFORMATION: THE LATEST EU NRMM REGULATION 2018/989
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