Measurements of the Emissions of a “Golden” Vehicle at Seven Laboratories with Portable Emission Measurement Systems (PEMS)
In the last years, the in-use vehicle emissions are controlled on-the road with portable emissions measurement systems (PEMS). PEMS cannot measure as accurately as the laboratory grade equipment and studies for their measurement uncertainty are continuing since their ap-pearance in the market. In this study we compared PEMS to laboratory grade equipment in Italian laboratories testing a diesel “Golden” vehicle for two consecutive years. The results showed equal means of PEMS and laboratory grade equipment for CO2, CO and PN with variability ±5 g/km for CO2, ±10 mg/km for NOx, and ±1×10^11 p/km for PN, which further decreased the second year. For CO the PEMS was on average 5-20 mg/km higher than the bags (variability ±40 mg/km). The main conclusion of this study is that PEMS are accurate under controlled laboratory ambient conditions, without any indications of significant bias.
GIECHASKIEL Barouch;
CASADEI Simone;
ROSSI Tommaso;
FORLONI Fabrizio;
DI DOMENICO Andrea;
2021-08-16
MDPI
JRC124334
2071-1050 (online),
https://www.mdpi.com/2071-1050/13/16/8762,
https://publications.jrc.ec.europa.eu/repository/handle/JRC124334,
10.3390/su13168762 (online),
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